Full Stack Developer (.NET, ReactJS, Flutter)

Job Title: Full Stack Developer

Role Level: Mid–Senior Level

Domain: Enterprise Application Development

Location: Singapore / Remote

Role Overview

We are seeking a versatile, hands-on Full Stack Developer to join our engineering team. In this role, you will build, scale, and maintain applications across mobile, web, backend APIs, enterprise system integrations, and relational databases.

You should be a true end-to-end troubleshooter who is comfortable investigating and resolving issues across every layer of the software stack. You will also leverage modern AI-assisted tools like GitHub Copilot to accelerate development, improve code quality, and deliver reliable enterprise solutions.

Key Responsibilities

• Mobile & Web Development: Develop, enhance, and support cross-platform mobile applications using Flutter / Dart and responsive web applications using ReactJS.
• Backend Services & APIs: Design, build, and maintain high-performance backend services and RESTful APIs using .NET / C#.
• Database & Integrations: Write complex SQL queries, stored procedures, and data access layers on Microsoft SQL Server and/or Oracle; build and maintain robust enterprise system and API integrations.
• Full-Stack Troubleshooting: Perform end-to-end root-cause analysis and debugging across frontend, backend, integration, and database layers.
• Code Quality & Best Practices: Write maintainable, reusable, clean, and testable code while participating actively in peer code reviews, testing, and technical architectural discussions.
• AI-Assisted Engineering: Utilize GitHub Copilot or similar AI-assisted development tools to speed up coding, refactoring, and debugging workflows.
• Cross-Functional Collaboration: Partner closely with Product Managers, UX/UI Designers, QA Engineers, and cross-functional teams to translate business requirements into technical solutions.

Skills & Qualifications

Must-Have Technical Skills

• Mobile Development: Flutter / Dart
• Web Frontend: ReactJS, JavaScript, HTML5/CSS3
• Backend Engineering: .NET / C# (Core / Framework), RESTful API Development & Integration
• Databases: Relational Databases, complex SQL querying (Microsoft SQL Server and/or Oracle)
• AI Tooling & Source Control: Git / Git-based workflows and GitHub Copilot (or similar AI coding tools)
• Problem Solving: Proven ability to troubleshoot complex issues end-to-end across full application stacks.

Preferred / Good-to-Have Skills

• DevOps & Cloud: Azure DevOps, CI/CD pipelines, automated build and deployment processes.
• Enterprise Features: Enterprise Application Integration (EAI) patterns, OAuth2, JWT, OpenID Connect authentication/authorization standards.
• Dual Database Experience: Hands-on experience working across both Oracle and Microsoft SQL Server environments.

Important Note:

Please share your resume in Word format with [Confidential Information]

If this requirement is not a match for you, please feel free to refer your friends.

Interested professionals can reach out to me for a confidential discussion at +65 68177759.

Best Regards,

Arti C

Sr. Talent Acquisition

Helius Technologies Pte Ltd

36 Robinson Road, #13-05, City House, Singapore 068877

• Mobile / WhatsApp: +65 68177759
• DID: +65 6429-9407
• Email: [HIDDEN TEXT]