Mobile & Web Developer (.NET & Flutter)

Full Stack Mobile & Web Developer (.NET & Flutter) Role Level: Mid–Senior Level Location: Singapore / Remote Role Overview We are looking for a hands-on Full Stack Mobile & Web Developer to build, scale, and maintain applications across mobile, web, backend APIs, and enterprise databases. You will work directly across the entire software stack—developing cross-platform mobile apps using Flutter/Dart , web applications using ReactJS , and backend microservices using .NET / C# with SQL Server or Oracle databases. Key Responsibilities • Mobile & Web Development: Develop responsive cross-platform mobile apps using Flutter / Dart and web frontends using ReactJS . • Backend APIs & Services: Design, build, and integrate high-performance REST APIs and backend microservices using .NET / C# . • Databases & Integrations: Write complex SQL queries, stored procedures, and integrations using Microsoft SQL Server and/or Oracle . • End-to-End Troubleshooting: Debug, isolate, and resolve issues across mobile, web, API, and database layers. • AI-Assisted Coding: Leverage GitHub Copilot (or similar AI tools) to accelerate development, refactoring, and code reviews. Requirements & Qualifications • Mobile & Web Stack: Hands-on experience with Flutter / Dart and ReactJS . • Backend Stack: Proven proficiency in .NET / C# and RESTful API integration. • Databases: Strong SQL querying experience on Microsoft SQL Server and/or Oracle . • Engineering Tools: Proficiency with Git and AI coding tools like GitHub Copilot . • Problem-Solving: Strong analytical capabilities to investigate and solve complex technical bugs across all application layers. Preferred Skills • DevOps: CI/CD pipeline automation and Azure DevOps . • Enterprise Features: OAuth2, JWT, and enterprise system integration patterns. Helius Technologies Pte Ltd 36 Robinson Road, #13-05, City House, Singapore 068877 #J-18808-Ljbffr