Full Stack Engineer
Summary
Full-stack engineer responsible for end-to-end development of an enterprise platform (CRM, project/portfolio, financial workflows) using SQL Server, Node.js/Express, React, and React Native in a secure on-premise Windows environment.
Full Stack Engineer
Job Title
Full Stack Engineer
Location
Qatar – Onsite
Duration
1 Year
Working Hours
8 hours per day
Job Purpose
We are looking for a highly experienced Full Stack Engineer with 10+ years of technical experience to take end‑to‑end ownership of an enterprise platform covering CRM, project and portfolio delivery, and financial workflows.
The platform is built using Microsoft SQL Server, Node.js/Express, React, and React Native and operates in a secure, on‑premise Windows environment with restricted/offline internet access.
The successful candidate will be responsible for developing and enhancing the application across the database, backend, frontend, security, and deployment layers. This is a hands‑on generalist role requiring strong database expertise and the ability to work independently in a controlled on‑premise environment.
Key Responsibilities
- Design, develop, maintain, and enhance full‑stack enterprise applications.
- Design and safely evolve Microsoft SQL Server database schemas while maintaining data integrity and audit requirements.
- Develop and maintain T‑SQL stored procedures, views, and database scripts.
- Create and manage sequential database migration scripts without relying on ORM or migration frameworks.
- Develop production‑grade Node.js and Express APIs.
- Implement RESTful APIs, JSON‑based integrations, authentication, validation, error handling, and third‑party integrations.
- Develop responsive and maintainable web applications using React and TypeScript.
- Work with React hooks, API clients, server‑state management, typed forms, validation, and data visualization.
- Implement and maintain application security, including authentication, authorization, RBAC, secure coding, CORS, XSS prevention, upload validation, and secrets management.
- Perform end‑to‑end development from database and API layers through to the user interface.
- Support deployment and operational activities in an on‑premise Windows Server environment.
- Develop and maintain deployment scripts using PowerShell.
- Manage Windows services, scheduled tasks, firewall configuration, and application dependencies.
- Perform controlled, script‑based releases in an environment without runtime internet access.
- Ensure all dependencies and application assets are vetted and bundled appropriately before deployment.
- Troubleshoot application, database, deployment, and performance issues.
- Contribute to performance optimization, maintainability, reliability, and security of the platform.
Required Technical Skills
Front End
- HTML, CSS, JavaScript
- React / React 18
- TypeScript
- Vite
- React Query / TanStack Query
- Typed forms and validation
- Data visualization
Back End
- Node.js
- Express.js
- Production REST API development
- API authentication and authorization
- Request validation and server‑side error handling
- Database connectivity, pooling, and timeout management
- JSON and third‑party API integrations
- GraphQL knowledge is an advantage
Database
- Microsoft SQL Server / T‑SQL – primary competency
- Stored procedures
- Views
- Relational database design
- Database schema design and evolution
- Sequential migration scripting
- Data integrity and audit requirements
- Query optimization
Security
- Token‑based authentication
- Password hashing
- Role‑Based Access Control (RBAC)
- Secure coding practices
- XSS prevention
- CORS
- Secure file‑upload validation
- Secrets management
- Data protection
Deployment / Operations
- Windows Server
- PowerShell scripting
- Windows Services
- Windows Scheduled Tasks
- Firewall configuration
- Script‑based/manual deployments
- On‑premise and restricted/offline environments
- Docker and CI/CD experience is an advantage
Experience & Qualifications
- 10+ years of technical experience in designing, developing, and maintaining applications from frontend to backend.
- Strong experience with full‑stack application development.
- Strong hands‑on experience with SQL Server/T‑SQL.
- Experience with Node.js and Express.js.
- Strong experience with React and TypeScript.
- Experience developing and integrating RESTful APIs.
- Experience with application security and server‑side authorization.
- Experience with on‑premise deployment and Windows‑based environments is highly desirable.
- Bachelor's degree in Computer Science, Software Engineering, Information Technology, Computer Engineering, or a related field.
Preferred Skills
- React Native
- GraphQL
- Docker
- CI/CD pipelines
- Environment configuration
- Third‑party system integration
- Performance optimization
- Enterprise application architecture
- Experience working in secure, restricted, or offline environments
Candidate Profile
The ideal candidate is a senior hands‑on Full Stack Engineer who can independently work across the database, backend, frontend, security, and deployment layers. Strong SQL Server/T‑SQL expertise is particularly important, along with practical experience in React, Node.js/Express, and enterprise application development.
Skills
Full Stack Engineer
Job Title
Full Stack Engineer
Location
Qatar – Onsite
Duration
1 Year
Working Hours
8 hours per day
Job Purpose
We are looking for a highly experienced Full Stack Engineer with 10+ years of technical experience to take end‑to‑end ownership of an enterprise platform covering CRM, project and portfolio delivery, and financial workflows.
The platform is built using Microsoft SQL Server, Node.js/Express, React, and React Native and operates in a secure, on‑premise Windows environment with restricted/offline internet access.
The successful candidate will be responsible for developing and enhancing the application across the database, backend, frontend, security, and deployment layers. This is a hands‑on generalist role requiring strong database expertise and the ability to work independently in a controlled on‑premise environment.
Key Responsibilities
- Design, develop, maintain, and enhance full‑stack enterprise applications.
- Design and safely evolve Microsoft SQL Server database schemas while maintaining data integrity and audit requirements.
- Develop and maintain T‑SQL stored procedures, views, and database scripts.
- Create and manage sequential database migration scripts without relying on ORM or migration frameworks.
- Develop production‑grade Node.js and Express APIs.
- Implement RESTful APIs, JSON‑based integrations, authentication, validation, error handling, and third‑party integrations.
- Develop responsive and maintainable web applications using React and TypeScript.
- Work with React hooks, API clients, server‑state management, typed forms, validation, and data visualization.
- Implement and maintain application security, including authentication, authorization, RBAC, secure coding, CORS, XSS prevention, upload validation, and secrets management.
- Perform end‑to‑end development from database and API layers through to the user interface.
- Support deployment and operational activities in an on‑premise Windows Server environment.
- Develop and maintain deployment scripts using PowerShell.
- Manage Windows services, scheduled tasks, firewall configuration, and application dependencies.
- Perform controlled, script‑based releases in an environment without runtime internet access.
- Ensure all dependencies and application assets are vetted and bundled appropriately before deployment.
- Troubleshoot application, database, deployment, and performance issues.
- Contribute to performance optimization, maintainability, reliability, and security of the platform.
Required Technical Skills
Front End
- HTML, CSS, JavaScript
- React / React 18
- TypeScript
- Vite
- React Query / TanStack Query
- Typed forms and validation
- Data visualization
Back End
- Node.js
- Express.js
- Production REST API development
- API authentication and authorization
- Request validation and server‑side error handling
- Database connectivity, pooling, and timeout management
- JSON and third‑party API integrations
- GraphQL knowledge is an advantage
Database
- Microsoft SQL Server / T‑SQL – primary competency
- Stored procedures
- Views
- Relational database design
- Database schema design and evolution
- Sequential migration scripting
- Data integrity and audit requirements
- Query optimization
Security
- Token‑based authentication
- Password hashing
- Role‑Based Access Control (RBAC)
- Secure coding practices
- XSS prevention
- CORS
- Secure file‑upload validation
- Secrets management
- Data protection
Deployment / Operations
- Windows Server
- PowerShell scripting
- Windows Services
- Windows Scheduled Tasks
- Firewall configuration
- Script‑based/manual deployments
- On‑premise and restricted/offline environments
- Docker and CI/CD experience is an advantage
Experience & Qualifications
- 10+ years of technical experience in designing, developing, and maintaining applications from frontend to backend.
- Strong experience with full‑stack application development.
- Strong hands‑on experience with SQL Server/T‑SQL.
- Experience with Node.js and Express.js.
- Strong experience with React and TypeScript.
- Experience developing and integrating RESTful APIs.
- Experience with application security and server‑side authorization.
- Experience with on‑premise deployment and Windows‑based environments is highly desirable.
- Bachelor's degree in Computer Science, Software Engineering, Information Technology, Computer Engineering, or a related field.
Preferred Skills
- React Native
- GraphQL
- Docker
- CI/CD pipelines
- Environment configuration
- Third‑party system integration
- Performance optimization
- Enterprise application architecture
- Experience working in secure, restricted, or offline environments
Candidate Profile
The ideal candidate is a senior hands‑on Full Stack Engineer who can independently work across the database, backend, frontend, security, and deployment layers. Strong SQL Server/T‑SQL expertise is particularly important, along with practical experience in React, Node.js/Express, and enterprise application development.