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Spring Boot
AWS/Azure

Backend Developer (C# / .NET)

freeC's Client
Save Job
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Full time
Hiring 1 people
5 years of experience
Ho Chi Minh
Published 23/07/2026

Why You’ll Love Working Here

Private healthcare and annual check-ups
Full social, health, and unemployment insurance
Annual bonus, performance rewards

Job Description

Key Responsibilities

  • Build and maintain backend business logic using modern .NET frameworks
  • Play a key role in upgrading a large existing platform and shaping its future architecture
  • Design and improve both REST and GraphQL APIs
  • Review and optimize current code, data structures, and technical workflows
  • Write automated tests and build good software quality habits
  • Join code reviews and share your ideas in technical discussions
  • Work closely with frontend developers, testers, product managers, and architects
  • Spot technical risks early and help the team keep getting better

Requirement

  • Solid years of coding experience using C# and .NET
  • Good understanding of clean code and building easy-to-maintain software
  • Experience with relational databases, especially Microsoft SQL Server
  • Proven background in designing and connecting APIs
  • Comfortable working with and understanding large and complex existing systems
  • Practice with automated testing and a focus on software quality
  • Strong problem-solving skills and analytical thinking
  • Experience using AI coding helpers or a strong desire to learn them
  • Fluent communication skills in both German and English

Nice to Have

  • Familiarity with ASP.NET Core and Entity Framework
  • Working knowledge of GraphQL
  • Hands-on experience with Azure cloud and Docker containers
  • Background in splitting large monolith applications into smaller pieces
  • Experience working on enterprise or ERP software environments
  • History of helping with large software modernization projects

Skills

C# .net
Sql Server
Api

Benefits

  • Attractive salary package with a guaranteed 13th-month bonus
  • Up to 18 days of paid annual leave
  • Premium healthcare coverage for your peace of mind
  • Company-sponsored daily commuting via ride-hailing apps
  • Free office pantry loaded with premium coffee, fresh fruit, and snacks
  • Great learning support including unlimited e-learning access, paid professional certificates, and weekly lunch-and-learn sessions
  • Personal 1-on-1 coaching with experienced tech leaders
  • Flexible working hours to easily match your personal schedule
  • Fun, agile, and open work culture with supportive teammates

Career

Company Info

freeC
Ho Chi Minh
101-300 employees

About

freeC is the Smart Recruiting Platform that leverages matching technology to actively connect hundred of thousand of employers and job seekers. The success of freeC is determined by our success in operating as a unified team. If you're interesting, ambitious, and eager to advance your career with us, explore our vacancies as below. We're excited to have you on board our ship to help us grow fast, deliver on our mission of actively connecting employers and job seekers around Vietnam

Working Address

Lầu 06, Tòa nhà BCONS TOWER II , Số 42/1, Đường Ung Văn Khiêm, Phường 25, Quận Bình Thạnh, TP. HCMView map