Mid-Level Full-Stack Developer

Client of United Nation careers

Background This position is located in the Decision-Support and Data Science Division (DSDSD). The Division is part of ESCWA's broader modernization and innovation efforts, providing advanced analytics and decision-support services within ESCWA, other UN entities, and Member States. Aligned with the UN 2.0 agenda, DSDSD develops and maintains digital platforms, data portals, and decision-support tools that serve the analytical and operational needs of ESCWA, partner UN entities, and Member States. Its software development activities encompass full-stack web applications, API ecosystems, database management, and containerized microservices, with a growing need to consolidate and migrate existing systems into a unified, maintainable .NET Core technology stack. The Mid-Level Full-Stack Developer will work on the following tasks:

1 NET Core Backend Development

• Design and implement RESTful APIs and backend services using ASP.NET Core, following clean architecture and SOLID principles.
• Develop and maintain data access layers using Entity Framework Core, Dapper, or raw ADO.NET against PostgreSQL and Microsoft SQL Server databases.
• Implement authentication, authorization, and security controls in line with organizational standards (OAuth2, JWT, role-based access).

2. Codebase Analysis and Migration

• Analyze existing frontend and backend codebases written in Angular, React, and NestJS to understand architecture, data flows, and business logic.
• Translate analyzed components and services into equivalent .NET Core implementations, ensuring functional parity and improved maintainability.
• Document migration findings, architectural decisions, and mapping between legacy and target implementations.
• Collaborate with the technical lead to prioritize and sequence migration tasks within sprint cycles.

3. Database Management and Optimization

• Design and manage relational database schemas in PostgreSQL and MSSQL, including stored procedures, views, indexing strategies, and performance tuning.
• Implement data migration scripts and manage schema versioning using Flyway, Liquibase, or EF Core migrations.
• Ensure data integrity, backup strategies, and compliance with organizational data governance policies.

4. Containerization and DevOps

• Containerize applications using Docker and define multi-service environments with Docker Compose for local development and staging deployments.
• Configure environment variables, secrets management, and network configurations in Docker Compose setups.
• Collaborate with infrastructure teams to align containerized deployments with server and orchestration standards.

5. Collaboration and Reporting

• Prepare technical documentation, API specifications (OpenAPI/Swagger), and developer guides.
• Support knowledge transfer and onboarding for team members working across the stack.