Senior Backend Developer (C#/.NET 8) – Fully Remote

aionixsoft • United State

Remote

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AI Summary

Design and maintain scalable backend services in C# and .NET 8 for global clients, collaborating directly with stakeholders to deliver high-quality, secure solutions. Focus on REST APIs, cloud deployments (Azure/AWS), and mentoring junior developers in a fully remote, long-term role. Requires 5+ years of commercial .NET experience with strong SQL and cloud expertise.

Key Highlights

Fully remote role with long-term client projects across web, AI, and legacy modernization

Direct collaboration with clients to translate business needs into technical solutions

Mentorship of junior developers and emphasis on code quality, security, and performance

Key Responsibilities

Design, build, and maintain backend services and REST APIs using C# and .NET 8/ASP.NET Core

Develop and optimize data models and queries using SQL Server or PostgreSQL with Entity Framework Core or Dapper

Deploy and manage services on Azure or AWS using Docker and CI/CD pipelines while ensuring high performance and security

Conduct code reviews, write automated tests, and enforce clean architecture and SOLID principles

Collaborate with clients to translate business requirements into technical solutions and resolve production issues

Identify and resolve performance bottlenecks and production incidents

Mentor junior developers and foster a culture of continuous improvement

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Technical Skills Required

C# .NET 8 ASP.NET Core

Benefits & Perks

Fully remote work

Long-term client projects

Small team with autonomy in technical decisions

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Nice to Have

AI features or LLM APIs in production applications

React or Angular frontend experience

Kubernetes, Terraform, or Bicep for cloud infrastructure

Legacy .NET Framework modernization experience

Job Description

About AionixSoft

AionixSoft is a software outsourcing company. We provide experienced developers who work as part of our clients' own engineering teams, across web, desktop, AI and legacy modernization projects.

About the role

You'll design and build backend services in C# and .NET 8, work directly with client stakeholders, help shape technical decisions and keep production code in good shape. Fully remote.

Responsibilities

- Design, build and maintain backend services and REST APIs with C#, .NET 8 and ASP.NET Core

- Model data and write efficient queries in SQL Server or PostgreSQL, using Entity Framework Core or Dapper

- Deploy and run services on Azure or AWS, with Docker and CI pipelines

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