PHP Developer Jobs in Qatar

<section><p class="heading jdMain">Job Description</p><p class="heading">Roles &amp; Responsibilities</p><div class="paragraph"><p>We are looking for a motivated PHP / Laravel developer to come join our agile team of professionals. If you are passionate about technology, constantly seeking to learn and improve skillset, then you are the type of person we are looking for! We are offering superb career growth opportunities, great compensation and benefits.</p><p><strong>Core skills:</strong> Based on job listings we looked at, employers want PHP Developer with these core skills. If you want to work in this field, focus on the following.</p><p>Develop, record and maintain cutting edge web-based PHP applications on portal plus premium service platforms</p><p>Build innovative, state-of-the-art applications and collaborate with the User Experience (UX) team</p><p>Ensure HTML, CSS, and shared JavaScript is valid and consistent across applications</p><p>Prepare and maintain all applications utilizing standard development tools</p><p>Utilize backend data services and contribute to increase existing data services API</p><p>Lead the entire web application development life cycle right from concept stage to delivery and post launch support</p><p>Convey effectively with all task progress, evaluations, suggestions, schedules along with technical and process issues</p><p>Document the development process, architecture, and standard components</p><p>Coordinate with co-developers and keeps project manager well informed of the status of development effort and serves as liaison between development staff and project manager</p><p>Keep abreast of new trends and best practices in web development</p><p>Data modeling and database design experience</p><p>Experience with software development lifecycle (SDLC) processes</p><p>Experience with service oriented architecture (SOA)</p></div></section><section><p class="heading">Desired Candidate Profile</p><p class="paragraph"></p><p>Are you an highly experienced, ambitious Fullstack developer looking for a challenging role where you can learn lots more?</p><p></p></section>

Job Purpose<br><br>The Full Stack Developer will be responsible for designing, developing, and maintaining scalable web applications using Laravel (backend) and React (frontend). The role requires expertise in building secure APIs, responsive user interfaces, and ensuring seamless integration between front-end and back-end systems.<br><br>3–5 years<br><br>Doha, Qatar<br><br>Full Time<br><br>Key Responsibilities<br><br> Design, develop, and maintain web applications using Laravel (PHP) and React (Java Script/Type Script). Build and optimize RESTful APIs and ensure integration with frontend components. Write clean, maintainable, and well-documented code following best practices. Implement responsive and user-friendly UI/UX in collaboration with designers. Ensure application security, performance, and scalability. Manage databases (MySQL, Postgre SQL) and implement efficient queries. Debug, test, and troubleshoot application issues across environments. Collaborate with cross-functional teams (design, QA, Dev Ops) to deliver end-to-end solutions. Stay updated with new technologies, frameworks, and best practices in full-stack development.<br><br>Required Qualifications<br><br> Bachelor’s degree in Computer Science, Software Engineering, or related field. 3–5 years of proven experience in full-stack web development. Strong backend development experience with Laravel (PHP). Proficiency in React.js (and React ecosystem: Redux, Hooks, Next.js optional). Solid understanding of RESTful APIs and JSON data exchange. Database management experience with MySQL/Postgre SQL. Familiarity with Git version control and CI/CD pipelines. Knowledge of front-end tools (Webpack, Babel, npm, Yarn). Candidates must be currently residing in Qatar.<br><br>Preferred Certifications<br><br> Laravel Certified Developer React Professional Certification Microsoft Certified: Azure Developer Associate (AZ-204) Docker/Kubernetes Certifications

Role Summary<br><br>We are seeking a Senior Software Engineer / Subject Matter Expert with 8–10+ years of experience in Oracle Access Portal (OAP) and telecom CRM application development. The ideal candidate will have strong full-stack development expertise using PHP (Yii2), Oracle Database, and modern web technologies to deliver scalable customer management and operational solutions.<br><br>Key Responsibilities<br><br>Design, develop, and maintain enterprise CRM applications using PHP (Yii2 Framework). Build scalable and modular solutions supporting telecom customer lifecycle management. Develop and support customer, account, service, subscription, and billing management functionalities. Manage end-to-end application development, including frontend, backend, and Oracle database integration. Implement and maintain Role-Based Access Control (RBAC) and application security controls. Develop audit logging and monitoring capabilities for business-critical operations. Implement real-time validation, data management grids, and workflow automation features. Troubleshoot and resolve complex UI, application, and database issues. Ensure adherence to secure coding standards and best practices. <br><br>Required Skills<br><br>Strong experience with Oracle Access Portal (OAP) and telecom CRM solutions. PHP (Yii2 Framework) development expertise. Oracle SQL and PL/SQL. REST APIs, AJAX, and secure authentication mechanisms. Java Script, j Query, HTML5, CSS, and Bootstrap. Apache Web Server administration and configuration. Unix/Linux environments. Strong understanding of customer management, service management, subscriptions, billing, and telecom operations. <br><br>Preferred Experience<br><br>Telecom OSS/BSS environments. Enterprise application architecture and workflow automation. Security, audit, and compliance-focused application development. <br><br>Experience: 8–10+ years<br><br>Domain: Telecommunications / CRM

<p>Job Title: Assistant Nurse Basic Monthly Salary: 41,000 - 51,000 PHP / month Location: Qatar Employment Type: Full Time</p><p><strong>Desired Candidate Profile</strong></p><div>Diploma in Nursing OR Diploma in Midwifery At least 2 years experience as Nurse Assistant or Midwife Assistant Must have a valid professional registration/license All educational and employment documents must be verifiable through DataFlow</div>

<section><p class="heading jdMain">Job Description</p><p class="heading">Roles &amp; Responsibilities</p><div class="paragraph"><p>Urgent Security Specialist Duties and Responsibilities Minimum experience - 4 Years Analyze IT specifications to assess security risks Design and implement safety measures and data recovery plans Act on privacy breaches and malware threats Serve as a security expert and conduct trainings when needed Draft policies and guidelines Proven experience as a Computer Security Specialist Programming skills are preferred (e.g. knowledge of C++, PHP languages) Familiarity with security frameworks (e.g. NIST Cybersecurity framework) and risk management methodologies Knowledge of patch management, firewalls and intrusion detection/prevention systems (e.g. TippingPoint) Familiarity with public key infrastructure (PKI) and cryptographic protocols (e.g. SSL/ TLS) An analytical mind with excellent problem-solving ability Outstanding communication and organization skills Decision-making skills Analyze and establish security requirements for your systems/networks Defend systems against unauthorized access, modification and/or destruction Configure and support security tools such as firewalls, anti-virus software, patch management systems, etc. Define access privileges, control structures and resources Perform vulnerability testing, risk analyses and security assessments Identify abnormalities and report violations Oversee and monitor routine security administration Develop and update business continuity and disaster recovery protocols Train fellow employees in security awareness, protocols and procedures Design and conduct security audits to ensure operational security Respond immediately to security incidents and provide post-incident analysis Research and recommend security upgrades Provide technical advice to developers regarding various security vulnerabilities like SQL Injection, XSS (Cross Site Scripting),Source Code Revelation,Remote File Inclusion,Session Hijacking,Cross Site Request Forgery</p></div></section><section><p class="heading">Desired Candidate Profile</p><p class="paragraph"></p><p>Proven experience as a Computer Security Specialist Programming skills are preferred (e.g. knowledge of C++, PHP languages) Familiarity with security frameworks (e.g. NIST Cybersecurity framework) and risk management methodologies Knowledge of patch management, firewalls and intrusion detection/prevention systems (e.g. TippingPoint) Familiarity with public key infrastructure (PKI) and cryptographic protocols (e.g. SSL/ TLS) An analytical mind with excellent problem-solving ability Outstanding communication and organization skills Decision-making skills</p><p></p></section>

<h2 class="h5">Job description</h2> <div class="t-break" data-jb-field="description"> Introduction <br> <p>A career in IBM Consulting is built on long-term client relationships and close collaboration worldwide. You'll work with leading companies across industries, helping them shape their hybrid cloud and AI journeys. With support from our strategic partners, robust IBM technology, and Red Hat, you'll have the tools to drive meaningful change and accelerate client impact. At IBM Consulting, curiosity fuels success. You'll be encouraged to challenge the norm, explore new ideas, and create innovative solutions that deliver real results. Our culture of growth and empathy focuses on your long-term career development while valuing your unique skills and experiences.</p><br><br> <br> <br> Your role and responsibilities <br> <p>Support IBM iX digital product engineering teams building client-facing digital experiences. Contribute to front-end development, design-to-code collaboration, and component testing on live engagements.</p><br><br><br><p>Eligibility: This internship is open to Qatari Nationals only.</p><br><br> <br> <br> Required education <br> Bachelor's Degree <br> <br> Required technical and professional expertise <br> <p>Working knowledge of React.js; familiarity with Figma and design-to-code workflows; understanding of HTML/CSS/JavaScript fundamentals.</p><br><br> <br> <br> Preferred technical and professional experience <br> <p>* <strong>Familiarity with Associated Frameworks:</strong> Exposure to frameworks associated with programming languages such as CSS3, HTML5, PHP, and JavaScript.</p><br><br><p>* <strong>Basic Understanding of APIs:</strong> Familiarity with various APIs used in web and mobile application development.</p><br><br><p>* <strong>Interest in Advanced Web Development:</strong> Curiosity about advanced web development technologies and techniques to enhance functionality and interactivity.</p><br><br> <br> <br> <br> <br> <br> </div>

Introduction<br><br>A career in IBM Consulting is built on long-term client relationships and close collaboration worldwide. You’ll work with leading companies across industries, helping them shape their hybrid cloud and AI journeys. With support from our strategic partners, robust IBM technology, and Red Hat, you’ll have the tools to drive meaningful change and accelerate client impact. At IBM Consulting, curiosity fuels success. You’ll be encouraged to challenge the norm, explore new ideas, and create innovative solutions that deliver real results. Our culture of growth and empathy focuses on your long-term career development while valuing your unique skills and experiences.<br><br>Your Role And Responsibilities<br><br>Support IBM i X digital product engineering teams building client-facing digital experiences. Contribute to front-end development, design-to-code collaboration, and component testing on live engagements.<br><br>Eligibility: This internship is open to Qatari Nationals only.<br><br>Required Technical And Professional Expertise<br><br>Working knowledge of React.js; familiarity with Figma and design-to-code workflows; understanding of HTML/CSS/Java Script fundamentals.<br><br>Preferred Technical And Professional Experience<br><br> Familiarity with Associated Frameworks: Exposure to frameworks associated with programming languages such as CSS3, HTML5, PHP, and Java Script. Basic Understanding of APIs: Familiarity with various APIs used in web and mobile application development. Interest in Advanced Web Development: Curiosity about advanced web development technologies and techniques to enhance functionality and interactivity.

Introduction<br><br>A career in IBM Consulting is built on long-term client relationships and close collaboration worldwide. You’ll work with leading companies across industries, helping them shape their hybrid cloud and AI journeys. With support from our strategic partners, robust IBM technology, and Red Hat, you’ll have the tools to drive meaningful change and accelerate client impact. At IBM Consulting, curiosity fuels success. You’ll be encouraged to challenge the norm, explore new ideas, and create innovative solutions that deliver real results. Our culture of growth and empathy focuses on your long-term career development while valuing your unique skills and experiences.<br><br>Your Role And Responsibilities<br><br>Support IBM i X digital product engineering teams building client-facing digital experiences. Contribute to front-end development, design-to-code collaboration, and component testing on live engagements.<br><br>Eligibility: This internship is open to Qatari Nationals only.<br><br>Required Technical And Professional Expertise<br><br>Working knowledge of React.js; familiarity with Figma and design-to-code workflows; understanding of HTML/CSS/Java Script fundamentals.<br><br>Preferred Technical And Professional Experience<br><br> Familiarity with Associated Frameworks: Exposure to frameworks associated with programming languages such as CSS3, HTML5, PHP, and Java Script. Basic Understanding of APIs: Familiarity with various APIs used in web and mobile application development. Interest in Advanced Web Development: Curiosity about advanced web development technologies and techniques to enhance functionality and interactivity.

Introduction<br><br>A career in IBM Consulting is built on long-term client relationships and close collaboration worldwide. You’ll work with leading companies across industries, helping them shape their hybrid cloud and AI journeys. With support from our strategic partners, robust IBM technology, and Red Hat, you’ll have the tools to drive meaningful change and accelerate client impact. At IBM Consulting, curiosity fuels success. You’ll be encouraged to challenge the norm, explore new ideas, and create innovative solutions that deliver real results. Our culture of growth and empathy focuses on your long-term career development while valuing your unique skills and experiences.<br><br>Your Role And Responsibilities<br><br>Support IBM i X digital product engineering teams building client-facing digital experiences. Contribute to front-end development, design-to-code collaboration, and component testing on live engagements.<br><br>Eligibility: This internship is open to Qatari Nationals only.<br><br>Required Technical And Professional Expertise<br><br>Working knowledge of React.js; familiarity with Figma and design-to-code workflows; understanding of HTML/CSS/Java Script fundamentals.<br><br>Preferred Technical And Professional Experience<br><br> Familiarity with Associated Frameworks: Exposure to frameworks associated with programming languages such as CSS3, HTML5, PHP, and Java Script. Basic Understanding of APIs: Familiarity with various APIs used in web and mobile application development. Interest in Advanced Web Development: Curiosity about advanced web development technologies and techniques to enhance functionality and interactivity.

<p>We operate an integrated enterprise platform CRM, project and portfolio delivery, and financial workflows built on a SQL Server data core, a Node.js/Express API, a React web application, and a React Native mobile companion. It runs entirely on premises in a secure, offline Windows environment. You will take end-to-end ownership of this platform: evolving the database schema safely, extending the API and web application, hardening security, and running disciplined script-based deployments. This is a full-ownership generalist role for an engineer who is genuinely strong on databases and comfortable operating software in a locked-down environment not a feature-factory position</p><p><strong>Desired Candidate Profile</strong></p><ul><li>10+ years of technical experience in designing, developing and maintaining programs and applications from front end to back end.</li><li>Working with front-end frameworks such as React, Angular, or Vue.js.</li><li>Building and integrating back-end services, APIs, and databases.</li><li>RESTful endpoints in Express, with robust database access, connection-pool resilience, request validation, and server-side error handling.</li><li>Using REST APIs or GraphQL to connect front-end and back-end systems.</li><li>Working with databases such as SQL Server, PostgreSQL or MySQL.</li><li>Working on Schema design and safe evolution of a substantial relational model, including migration scripting and preservation of the platform's data-integrity and audit guarantees.</li><li>Good experience on React + TypeScript features from UI through hooks to API client, with disciplined layering and maintainable component architecture.</li><li>Working on maintaining Security posture. Authentication, session handling, role-based access control enforced server-side, and secure-coding practice across the stack</li><li>Full experience of Deployment and operations. Manual, script-based releases on Windows Server scheduled tasks, service management, and a vet-then-bundle dependency discipline (no runtime internet; all assets local and vetted at build time).</li><li><strong>Skills:</strong></li><li>Front-end: HTML, CSS, JavaScript, React + TypeScript. React 18, Vite, server-state management (React Query/TanStack), typed forms and validation, and data visualization.</li><li>Back-end: Node.js &amp; Express. Production API development with the mssql driver or comparable: pooling, timeouts, crash-resilient behavior.</li><li>Databases: Microsoft SQL Server / T-SQL primary competency. Stored procedures, views, and sequential migration scripting without an ORM or migration framework.</li><li>Application security fundamentals. Token-based auth, password hashing, RBAC design, XSS avoidance, CORS discipline, upload validation, and secrets handling.</li><li>On-premise Windows delivery. PowerShell scripting, Windows service and scheduled-task management, firewall configuration, and experience deploying without cloud CI/CD.</li><li>API development: RESTful APIs, GraphQL, JSON, authentication, and integration with third-party systems.</li><li>DevOps/basic deployment: CI/CD pipelines, Docker, and environment configuration.</li><li>Security: Authentication, authorization, secure coding practices, and data protection.</li><li><strong>Qualifications and certifications:</strong></li><li>A bachelor s degree in Computer Science, Software Engineering, Information Technology, Computer Engineering, or a related field</li><li>Full Stack Engineer CV including Years of experience, Preferred Certification, and Technical Expertise:</li><li>Front-end: HTML, CSS, JavaScript, TypeScript, React, Angular, or Vue.js.</li><li>Back-end: Node.js, Java, Python, C#, .NET, PHP, or similar server-side technologies.</li><li>Databases: SQL Server, PostgreSQL or MySQL.</li><li>API development: RESTful APIs, GraphQL, JSON.</li><li>DevOps/basic deployment: CI/CD pipelines, Docker (bidder may share more than one CV)</li></ul>

<p>Work in an integrated enterprise platform — CRM, project and portfolio delivery, and financial workflows — built on a SQL Server data core, a Node.js/Express API, a React web application, and a React Native mobile companion. It runs entirely on premises in a secure, offline Windows environment. Must take end-to-end ownership of this platform: evolving the database schema safely, extending the API and web application, hardening security, and running disciplined script-based deployments. This is a full-ownership generalist role for an engineer who is genuinely strong on databases and comfortable operating software in a locked-down environment — not a feature-factory position. </p><p><strong>Desired Candidate Profile</strong></p><ul><li><p>10+&15+ years of technical experience in designing, developing and maintaining programs and applications from front end to back end.</p></li><li><p>Working with front-end frameworks such as React, Angular, or Vue.js.</p></li><li><p>Building and integrating back-end services, APIs, and databases. RESTful endpoints in Express, with robust database access, connection-pool resilience, request validation, and server-side error handling.</p></li><li><p>Using REST APIs or GraphQL to connect front-end and back-end systems.</p></li><li><p>Working with databases such as SQL Server, PostgreSQL or MySQL.</p></li><li><p>Working on Schema design and safe evolution of a substantial relational model, including migration scripting and preservation of the platform's data-integrity and audit guarantees.</p></li><li><p>Good experience on React + TypeScript features from UI through hooks to API client, with disciplined layering and maintainable component architecture.</p></li><li><p>Working on maintaining Security posture. Authentication, session handling, role-based access control enforced server-side, and secure-coding practice across the stack.</p></li><li><p>Compliance with SOW, Execution and Management</p></li><li><p>Full Stack Engineer CV including Years of experience, Preferred Certification, and Technical <strong>Expertise: </strong></p></li></ul><p><strong>Front-end:</strong> HTML, CSS, JavaScript, TypeScript, React, Angular, or Vue.js</p><p><strong>Back-end:</strong> Node.js, Java, Python, C#, .NET, PHP, or similar server-side technologies.</p>

<section><p class="heading jdMain">Job Description</p><p class="heading">Roles &amp; Responsibilities</p><div class="paragraph"><p>The Software project management specialist will be responsible for bridging the gap between business and IT sides, as well as leading IT projects as required. You will have many responsibilities that includes typical project management responsibilities to support the automation projects across the organization. You also will be required to attend training as needed and support all project activities.</p><p>Roles &amp; Responsibilities</p><ul><li>Coordinate internal resources and third parties/vendors for the flawless execution of projects</li><li>Ensure that all projects are delivered on-time, within scope and within budget</li><li>Developing project scopes and objectives, involving all relevant stakeholders and ensuring technical feasibility</li><li>Ensure resource availability and allocation</li><li>Develop a detailed project plan to track progress</li><li>Use appropriate verification techniques to manage changes in project scope, schedule and costs</li><li>Measure project performance using appropriate systems, tools and techniques</li><li>Report and escalate to the PMO lead and the management as needed</li><li>Manage the relationship with the client and all stakeholders</li><li>Perform risk management to minimize project risks</li><li>Establish and maintain relationships with third parties/vendors</li><li>Create and maintain comprehensive project documentation</li><li>Identify, define, and document key processes and business requirements.</li><li>Create Use Cases for business applications and work with IT teams to translate complex business requirements into technical specifications through technical walkthrough meetings.</li><li>Facilitate structured Root Cause Analysis, Requirements and Brainstorming sessions.</li><li>Measurement and able to translate that into technical specifications.</li><li>Facilitate improvement project teams to analyze business processes and identify efficiencies, controls and integration points with other business processes and sub-processes.</li></ul></div></section><section><p class="heading">Desired Candidate Profile</p><p class="paragraph"></p><ul><li>University Degree in Computer Engineering, Engineering or any related subject</li><li>Project Management degree or PRINCE2/PMP Certified is a must</li><li>ITIL Knowledge &amp; certification is a plus</li><li>Proven track record in managing ERP Software Projects</li><li>Knowledge, skills and experience</li><li>Proven knowledge and experience of process management methodologies &amp; business analysis methodologies.</li><li>Strong knowledge in SDLC</li><li>At least 5 years of Software Project management</li><li>At least 5 years in business analysis, process analysis, business application development</li><li>Used to work in multi-national teams located in different places. Knows how to deal successfully with multi-cultural differences.</li><li>Efficient interaction with C-level Managers, Clients and Internal Departments</li><li>Fluent English mandatory.</li><li>Proficiency in the use of computers for:<ul><li>MS Project</li><li>MS Visio</li></ul></li><li>Will be a plus if you have knowledge in<ul><li>Any programming language ( Preferred PHP )</li><li>AWS tools</li><li>Data Base Administration</li><li>Web Security</li></ul></li><li>Personal characteristics<ul><li>Ethically: Understand ethical behavior and business practices, and ensure that own behavior and the behavior of others is consistent with these standards and aligns with the values of the organization.</li><li>Communicate Effectively: Speak, listen and write in a clear, thorough and timely manner using appropriate and effective communication tools and techniques.</li><li>Creativity/Innovation: Develop new and unique ways to improve operations of the organization and to create new opportunities.</li><li>Foster Teamwork: Work cooperatively and effectively with others to set goals, resolve problem, and make decisions that enhance organizational effectiveness.</li><li>Lead: Positively influence others to achieve results that are in the best interest of the organization.</li><li>Make Decisions: Assess situations to determine the importance, urgency and risks, and make clear decisions which are timely and in the best interests of the organization.</li><li>Organize: Set priorities, develop a work schedule, monitor progress towards goals, and track details/data/information/activities.</li><li>Plan: Determine strategies to move the organization forward, set goals, create and implement actions plans, and evaluate the process and results.</li><li>Solve Problems: Assess problem situations to identify causes, gather and process relevant information, generate possible solutions, and make recommendations and/or resolve the problem.</li></ul></li></ul><p></p></section>

<p>We are looking for a hands-on Senior Full Stack Developer with at least 6 years of professional experience building and shipping production software end-to-end. You will own features across the entire stack from mobile and web front ends, through APIs and server-side logic, to cloud infrastructure and third-party integrations. You will work on real, high-traffic systems that power a consumer mobile app and its companion admin/web portal, including event-driven media pipelines, analytics tracking, and cloud-native services. This is a broad, ownership-driven role. We are not looking for a specialist in a single language or framework. We need someone who can move fluidly between frontend, backend, mobile, and infrastructure, and who can pick up new languages, frameworks, and platforms as the product requires. </p><p><strong>Desired Candidate Profile</strong></p><p><strong>WHAT YOU'LL DO</strong></p><ul><li><p>Design, build, and maintain full-stack features spanning web frontends, mobile apps, backend services, and APIs.</p></li><li><p>Develop and consume RESTful and GraphQL APIs, and integrate third-party and internal services (payments, notifications, storage, CDN, auth, analytics, etc.).</p></li><li><p>Build and maintain serverless and server-based backend logic, including event-driven processing pipelines and background jobs.</p></li><li><p>Work across cloud infrastructure provisioning, configuring, and troubleshooting compute, storage, databases, and content delivery.</p></li><li><p>Implement and maintain authentication, authorization, and secure data handling across services.</p></li><li><p>Build and support mobile app features and, where needed, native modules for iOS and Android.</p></li><li><p>Design and evolve database schemas (SQL and NoSQL) and data models that scale with product growth.</p></li><li><p>Instrument applications for monitoring, logging, and analytics; troubleshoot production issues using cloud logging and metrics tools.</p></li><li><p>Collaborate with product, design, and QA to translate requirements into reliable, well-tested, maintainable code.</p></li><li><p>Review code, mentor junior developers, and help set technical standards and best practices.</p></li><li><p>Continuously evaluate and adopt new tools, frameworks, and languages where they best serve the product, not limited to any single stack.</p></li></ul><p><br></p><p><strong>WHAT WE'RE LOOKING FOR</strong></p><ul><li><p>6+ years of professional full stack development experience, with demonstrable production applications.</p></li><li><p>Strong command of JavaScript/TypeScript and comfort learning and working in other languages as needed (e.g. Python, Java, Kotlin, Swift, Go, PHP, C#).</p></li><li><p>Proven experience across the full stack: frontend UI development, backend/server-side logic, API design, and third-party integrations.</p></li><li><p>Hands-on experience with Node.js and at least one other backend runtime or framework (not limited to Node.js alone).</p></li><li><p>Experience building for both web and mobile, including cross-platform frameworks (e.g. React Native, Flutter) and, ideally, native iOS (Swift) or Android (Kotlin/Java) development.</p></li><li><p>Solid understanding of relational and NoSQL databases, data modeling, and query performance.</p></li><li><p>Experience with cloud platforms (AWS, GCP, or Azure), compute, storage, serverless functions, CDN, and managed databases.</p></li><li><p>Practical knowledge of CI/CD, version control (Git), and collaborative development workflows.</p></li><li><p>Understanding of application security, authentication/authorization patterns, and data protection best practices.</p></li><li><p>Strong debugging and problem-solving skills across the stack, comfortable diagnosing issues from the UI down to infrastructure logs.</p></li><li><p>Excellent communication skills and the ability to work independently and take ownership of features end to end.</p></li></ul><p><br><br></p><p><strong>TECHNOLOGIES YOU MAY WORK WITH</strong></p><p><em>The list below reflects the breadth of our current technology landscape. Experience with all of it is not required. We care most about strong full stack fundamentals and the ability to adapt across languages, frameworks, and platforms, including ones not listed here.</em></p><br><p><strong>Frontend & Mobile</strong></p><p>React / Next.js</p><p>TypeScript</p><p>React Native</p><p>iOS (Swift)</p><p>Android (Kotlin)</p><p>Flutter (a plus)</p><br><p><strong>Backend & APIs</strong></p><p>Node.js</p><p>REST APIs</p><p>GraphQL</p><p>Other frameworks (Python/Java/Go, etc.)</p><p>Serverless Functions</p><p>Microservices</p><br><p><strong>Cloud, Data & Infrastructure</strong></p><p>AWS (Lambda, S3, CloudFront)</p><p>DynamoDB / NoSQL</p><p>SQL Databases</p><p>CI/CD Pipelines</p><p>Docker</p><p>Auth & Identity (Cognito, OAuth)</p><br><p><strong>Integrations & Delivery</strong></p><p>Media Processing Pipelines</p><p>Payment Gateways</p><p>Push Notifications</p><p>Analytics & Event Tracking</p><p>Third-Party APIs</p><p>CDN & Caching</p><p><br></p><p><strong>NICE TO HAVE</strong></p><ul><li><p>Experience with event-driven, serverless architectures (e.g. S3-triggered processing, message queues, background workers).</p></li><li><p>Exposure to media processing (image/audio/video transcoding) or streaming protocols.</p></li><li><p>Experience building analytics or activity-tracking systems.</p></li><li><p>Familiarity with infrastructure-as-code tooling.</p></li><li><p>Prior experience in a startup or fast-paced product environment, owning features independently.</p></li></ul>

<h2 class="h5">Job description</h2> <div class="t-break" data-jb-field="description"> <p>We're hiring a <b>Senior Distributed Systems Engineer</b> to design and build the core of our platform: a local-first sync engine in which every node keeps a complete, live copy of its data, operates fully while disconnected, and reconciles cleanly on reconnect — no lost writes, no manual conflict resolution.</p><p>This is a founding seat. You'll own the convergent data model, the replication protocol, and the correctness guarantees end to end, and define the interface the rest of the product is built on. It's the load-bearing layer of the system.</p><ul><li>Design and implement the <b>convergent data model (CRDTs)</b> — merge semantics that converge deterministically after arbitrary partition.</li><li>Build the <b>append-only operation log</b> (event sourcing) underpinning sync, audit, and recovery.</li><li>Implement <b>causality and ordering</b> — hybrid logical clocks across nodes that can't trust wall clocks or constant connectivity.</li><li>Design the <b>hub↔edge sync protocol</b> — efficient reconciliation and anti-entropy that converges fast after long partitions and stays cheap on constrained links.</li><li>Deliver <b>correctness as an artifact</b> — a test suite proving convergence under partition, concurrent edits, and node failure.</li><li>Define and document the <b>core's interface (API)</b> that the product team builds against, and support their integration.</li><li>Set the <b>engineering standards</b> for the core: architecture decisions, documentation, and knowledge transfer.</li></ul><p><br></p> </div><h2 class="h5">Skills</h2> <div data-jb-field="skills"><ul><li>Deep, hands-on experience with <b>CRDTs or equivalent convergent replication</b> — you've implemented, extended, or meaningfully contributed to conflict-free replicated data types, operational transformation, or a production sync engine. Library <i>authorship or internals</i> work, not only library use.</li><li><b>Distributed-systems fundamentals in practice:</b> eventual/causal consistency, logical and hybrid logical clocks, vector clocks, idempotency, partition tolerance — used in real systems, not just read about.</li><li><b>Event sourcing / append-only log architectures</b> in production.</li><li><b>Sync or replication protocol design</b> — hub-spoke, peer-to-peer, or anti-entropy/gossip.</li><li>A <b>correctness mindset</b>: property-based testing, simulation/chaos testing of distributed behavior, or Jepsen-style verification. You treat "it converges" as something you demonstrate, not assume.</li><li><b>Senior engineering judgment</b> — you've owned a hard technical core before and can make irreversible architecture decisions carefully.</li></ul><p><br></p><p>Who should NOT apply</p><p>We respect your time, so we'll be unusually direct. We have reviewed hundreds of applications for this role, and nearly all came from strong engineers in the wrong specialty. Please <b>do not apply</b> if the following describes you — not because your skills lack value, but because this specific seat is not your seat:</p><ul><li><b>Full-stack and web application developers.</b> React/Angular/Node/Django/.NET/Laravel, building web apps, dashboards, APIs, and CRUD systems — even at a senior level, even with "distributed microservices" on your CV. This role has no front-end and no product surface. (We do hire product engineers separately — this posting is not that role.)</li><li><b>Kafka / event-streaming / data engineers.</b> If your "distributed systems" experience is Kafka, Spark, RabbitMQ, Airflow, ETL, or event-driven microservices — that is <i>data movement at scale</i>, a genuinely different discipline from <i>convergent replication under partition</i>. This is the single most common mismatch we see.</li><li><b>DevOps, SRE, cloud, and IT-infrastructure engineers.</b> Kubernetes, AWS/Azure, CI/CD, monitoring, Active Directory, networking, system administration, technical support. You operate and scale systems; this role <i>builds database-grade internals</i>. Different craft entirely.</li><li><b>Mobile or desktop developers whose "offline" means local storage.</b> An app with a SQLite/Realm/IndexedDB cache that uploads when back online is offline <i>capability</i> — the consumer side of sync. This role builds the <i>engine</i>: merge semantics, causality, convergence proofs. If you've only ever synced through a library or a backend-as-a-service, that's use, not internals.</li><li><b>Engineers whose CRDT exposure is having imported Yjs/Automerge into a project.</b> Using a CRDT library well is good engineering — but this role is for someone who could have <i>written</i> a meaningful part of one. If you can't explain how a CRDT achieves convergence without a central authority, don't apply yet.</li><li><b>AI/ML engineers and data scientists.</b> Different field. We may hire for analytics later; this is not that role.</li><li><b>Junior and mid-level engineers, students, and recent graduates</b> — regardless of talent. This is a load-bearing founding seat whose failure mode is silent data corruption in critical infrastructure. It requires senior judgment earned on production distributed systems. There is no "grow into it" path for this particular role.</li><li><b>Generalists planning to learn this on the job.</b> We're not hiring potential for this seat; we're hiring someone who has already done convergent replication for real. If the two-nodes question above didn't spark a concrete answer, this isn't the role to stretch into.</li></ul><p><br></p><p><br></p></div>