Sr. NET developer - AWS

Were seeking a Senior Back-End Engineer to help shape and evolve the core systems that power our platform. In this role, you'll design and build reliable, scalable, and high-performance services that serve as the backbone of our products.

Youll work closely with other engineers, product managers, and front-end teams to transform ideas into production-ready solutions. This is a hands-on role for someone passionate about clean architecture, distributed systems, and modern cloud technologies.

Responsabilities

• Design and develop robust back-end services and APIs using .NET Core.
• Apply Domain-Driven Design (DDD) and CQRS to structure complex business logic effectively.
• Build and maintain microservices that are scalable, testable, and easy to evolve.
• ​Implement Entity Framework Core for ORM and database management.
• ​Work with both document (e.g., MongoDB, DynamoDB) and relational (e.g., MySQL, PostgreSQL) databases.
• ​Develop serverless and event-driven solutions using AWS Lambda, EventBridge, and queues (SNS/SQS).
• ​Implement efficient caching strategies with in-memory caches and Redis to improve performance.​
• ​Package and distribute reusable code via custom NuGet packages and private feeds.​
• ​Follow Clean Architecture principles to ensure modularity and maintainability.​
• ​Write high-quality unit tests using xUnit and participate in peer code reviews.​
• ​Collaborate with other engineers to define and uphold coding standards and best practices.

Skills:

• 5+ years of professional experience building back-end systems with .NET Core.
• Strong understanding of DDD, CQRS, and Clean Architecture.
• Proven experience working with microservices and distributed system design.
• Proficiency in Entity Framework Core and database optimization techniques.
• Practical experience with AWS Lambda, EventBridge, and message queues (SNS/SQS or similar).
• Familiarity with caching technologies (in-memory, Redis).
• Experience building and consuming custom NuGet packages and managing internal feeds.
• Deep understanding of RESTful API design and versioning best practices.
• Strong testing background with frameworks such as xUnit.
• Excellent collaboration and communication skills in a remote-first team.
• A pragmatic mindset focused on delivering the right solution, not just the perfect one.

Bonus Points

• Background in fintech, payments, HR tech, HR benefits, or other compliance-driven industries.
• Experience with Infrastructure as Code (IaC) tools such as AWS CDK or Terraform.
• Familiarity with CI/CD pipelines, Docker, and Kubernetes.
• Experience building or maintaining large-scale event-driven architectures.
• Exposure to AI-assisted development tools such as Windsurf, Cursor, or similar.
• Experience developing with MCP (Model Context Protocol) or LLM-based applications.

Why apply:

• Remote job
• USD payment: 5k-6k USD
• International projects and teams