Full Stack Engineer - Qatar (Onsite)

Job Role: Full Stack Engineer

Experience: 10+ years

Location: Qatar (Onsite)

Duration: 1 year 

Job Purpose:

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

Experience:

• 10+ years of technical experience in designing, developing and maintaining programs and applications from front end to back end.


• Working with front-end frameworks such as React, Angular, or Vue.js.


• 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.


• Using REST APIs or GraphQL to connect front-end and back-end systems.


• Working with databases such as SQL Server, PostgreSQL or MySQL.


• 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.


• Good experience on React + TypeScript features from UI through hooks to API client, with disciplined layering and maintainable component architecture.


• Working on maintaining Security posture. Authentication, session handling, role-based access control enforced server-side, and secure-coding practice across the stack


• 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).

• Skills:
  Front-end: HTML, CSS, JavaScript, React + TypeScript. React 18, Vite, server-state management (React Query/TanStack), typed forms and validation, and data visualization.


• Back-end: Node.js & Express. Production API development with the mssql driver or comparable: pooling, timeouts, crash-resilient behavior.


• Databases: Microsoft SQL Server / T-SQL — primary competency. Stored procedures, views, and sequential migration scripting without an ORM or migration framework.


• Application security fundamentals. Token-based auth, password hashing, RBAC design, XSS avoidance, CORS discipline, upload validation, and secrets handling.


• On-premise Windows delivery. PowerShell scripting, Windows service and scheduled-task management, firewall configuration, and experience deploying without cloud CI/CD.


• API development: RESTful APIs, GraphQL, JSON, authentication, and integration with third-party systems.
  DevOps/basic deployment: CI/CD pipelines, Docker, and environment configuration.


• Security: Authentication, authorization, secure coding practices, and data protection.

Qualifications and certifications:
A bachelor’s degree in Computer Science, Software Engineering, Information Technology, Computer Engineering, or a related field

Full Stack Engineer CV including Years of experience, Preferred Certification, and Technical Expertise:

• Front-end: HTML, CSS, JavaScript, TypeScript, React, Angular, or Vue.js.


• Back-end: Node.js, Java, Python, C#, .NET, PHP, or similar server-side technologies.


• Databases: SQL Server, PostgreSQL or MySQL. API development: RESTful APIs, GraphQL, JSON.


• DevOps/basic deployment: CI/CD pipelines, Docker (bidder may share more than one CV)