Full Stack Engineer

Arab Solutions; Qatar; On-site; QAR 250,000 - 450,000; Full time

Job summary

Arab Solutions is seeking a seasoned Full Stack Engineer to own an on-premises CRM platform end-to-end. You will evolve a SQL Server core, extend Express API and React web/mobile apps, and harden security in a locked-down Windows environment.

A strong background across front-end, back-end, databases, and DevOps is essential for disciplined, script-based deployments. The ideal candidate thrives in a generalist role, not a feature factory, and brings 10+ years designing, developing, and

Qualifications

• Bachelor's degree in CS or related field.
• Full Stack CV with years of experience and tech expertise: Front-end: HTML, CSS, JavaScript, TypeScript, React/Angular/Vue.
• Back-end: Node.js, Java, Python, C#, .NET, PHP or similar.
• Databases: SQL Server, PostgreSQL, MySQL.
• API development: RESTful APIs, GraphQL, JSON.
• DevOps: CI/CD pipelines, Docker.

Responsibilities

• Take end-to-end ownership of the CRM platform from front-end to back end.
• Evolve the database schema safely and perform migrations.
• Extend the API and web application; harden security.
• Script-based deployments on Windows Server with controlled assets.
• Maintain data integrity and audit guarantees.

Skills

React + TypeScript

Node.js & Express

SQL Server

PostgreSQL

MySQL

RESTful APIs

GraphQL

RBAC

PowerShell

Windows Server

Docker

CI/CD

Security best practices

Education

Bachelor's degree in Computer Science or related field

Tools

mssql driver

PowerShell

Docker

Windows Server

Job description

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 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 stackFull 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)