Senior .NET Full-Stack Architect | APIs & Cloud

ANTAS PTE. LTD.; Singapore; On-site; SGD 140,000 - 220,000; Full time

Job summary

ANTAS PTE. LTD. seeks a Senior Full Stack Developer (.NET) to architect, develop, optimize, and maintain enterprise-scale web applications using Microsoft .NET technologies and modern frontend frameworks.

You will drive secure, scalable software delivery with C#, ASP.NET Core, REST APIs, and cloud-native best practices. The role requires strong expertise in SQL Server, Azure, and CI/CD, plus experience with React.js or Angular, TypeScript, and modern web standards.

Qualifications

• 12+ years in software development with at least 7 years in C# and .NET tech.
• 5+ years frontend experience with React.js or Angular, TypeScript, JavaScript.
• Strong expertise in Microsoft SQL Server, T-SQL, and database design.
• Practical Azure cloud experience, CI/CD, and deployment practices.

Responsibilities

• Design and implement enterprise apps using C#, .NET 6/7/8, ASP.NET Core, Web API, EF Core, LINQ.
• Develop RESTful APIs, asynchronous services, microservices, and distributed components.
• Build responsive frontend interfaces with React.js or Angular, TypeScript, JS, HTML5, CSS3.
• Apply Clean Architecture, DDD, SOLID, DI, and common design patterns.
• Design and optimize SQL Server databases, T-SQL, indexing, execution plans, transactions.
• Implement authentication/authorization with OAuth 2.0, OpenID Connect, JWT, and ASP.NET Identity.
• Engineer system integrations using HTTP/REST, JSON, middleware, and third-party APIs.
• Develop cloud-based solutions on Microsoft Azure and cloud deployment practices.
• Implement automated unit, integration, and API tests with appropriate frameworks.
• Configure source control, CI/CD pipelines, and deployment workflows using Git & Azure DevOps.
• Perform code reviews, static analysis, debugging, and performance profiling.
• Troubleshoot complex production issues related to latency, memory, DB performance, APIs.
• Establish coding standards, reusable components, secure development practices.
• Provide technical leadership, design reviews, and mentorship to teams.
• Collaborate with architects, analysts, QA, DevOps throughout Agile lifecycle.
• Prepare technical specs, API docs, and deployment docs.

Skills

C#

ASP.NET Core

Web API

Entity Framework Core

LINQ

React.js

Angular

TypeScript

SQL Server

Azure

OAuth 2.0 / OpenID Connect / JWT

Git / CI/CD

Unit Testing

DDD

SOLID

Tools

Azure DevOps

Git

Job description

ANTAS PTE. LTD. seeks a Senior Full Stack Developer (.NET) to architect, develop, optimize, and maintain enterprise-scale web applications using Microsoft .NET technologies and modern frontend frameworks.

You will drive secure, scalable software delivery with C#, ASP.NET Core, REST APIs, and cloud-native best practices. The role requires strong expertise in SQL Server, Azure, and CI/CD, plus experience with React.js or Angular, TypeScript, and modern web standards.