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Senior .NET / C# Developer – Enterprise API & Platform Integration

Role Type:

Full-time

Location:

Hyderabad

Seeking a Senior .NET / C# Developer with 5+ years of experience building enterprise-grade backend systems, REST APIs, and cloud-native integrations. The role focuses on developing scalable SaaS platforms and secure integrations similar to retirement administration, financial services, payroll, and benefits platforms such as Relius API Platform.


The ideal candidate will have strong expertise in .NET technologies, API development, cloud services, secure integrations, and transactional enterprise systems.

Qualifications

Backend Development

  • C#

  • .NET Core / .NET 6/7/8

  • ASP.NET Core Web API

  • Entity Framework Core

  • LINQ & Async Programming

API & Integration

  • REST APIs

  • Swagger / OpenAPI

  • JSON/XML

  • OAuth2 / OpenID Connect

  • Webhooks & API Integrations

  • Postman/API Testing

Database Technologies

  • SQL Server

  • PostgreSQL

  • Query Optimization

  • Stored Procedures

  • Transaction Processing

Cloud & DevOps

  • AWS and/or Azure

  • Docker

  • GitHub / GitHub Actions

  • CI/CD Pipelines

  • Logging & Monitoring

Preferred Skills

  • Microservices Architecture

  • Kafka / RabbitMQ / AWS SQS

  • Kubernetes

  • Redis Caching

  • Financial or Retirement Domain Experience

  • Payroll / HRIS / Benefits Integrations

  • SaaS Platform Development

  • Secure Enterprise Application Design

Functional Domain Experience Preferred

  • Retirement Administration

  • 401(k) / Pension Platforms

  • Financial Services

  • Insurance & Benefits Administration

  • Payroll Systems

  • HR Technology Platforms

Responsibilities

  • Design and develop scalable backend  applications using C#, .NET Core/.NET 8, and ASP.NET Core Web APIs

  • Build and maintain RESTful APIs,  middleware, and enterprise integrations

  • Integrate with retirement, payroll, HR, financial, and benefits administration platforms

  • Develop secure authentication and  authorization frameworks using OAuth2, JWT, and OpenID Connect

  • Implement asynchronous processing, event-driven workflows, and microservices architectures

  • Design and optimize SQL Server/PostgreSQL databases and data access layers

  • Participate in cloud deployments, CI/CD  automation, monitoring, and production support

  • Collaborate with product managers, architects, QA teams, DevOps engineers, and client integration teams

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