Remote Full-Stack Mobile & Web Dev — Flutter, React, .NET

Helius Technologies

Singapore

Remote

SGD 90,000 - 120,000

Full time

3 days ago

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Job summary

Helius Technologies Pte Ltd is seeking 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 across the stack—Flutter/Dart for mobile, ReactJS for web, and .NET/C# for backend services.

You will design RESTful APIs, write complex SQL queries for SQL Server or Oracle, and leverage AI coding tools to accelerate development.

Qualifications

Hands-on experience with Flutter / Dart and ReactJS.
Proven proficiency in .NET / C# and RESTful API integration.
Strong SQL querying experience on Microsoft SQL Server and/or Oracle.
Proficiency with Git and AI coding tools like GitHub Copilot.
Strong analytical capabilities to investigate and solve complex technical bugs across all application layers.

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.