Mobile & Web Developer (.NET & Flutter)

Helius Technologies; Singapore; Remote; SGD 90,000 - 120,000; Full time

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.

Skills

Flutter / Dart

ReactJS

.NET / C#

SQL Server / Oracle

Git

GitHub Copilot

RESTful APIs

Problem-Solving

Tools

GitHub Copilot

Azure DevOps

Job description

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