Design, build, test, and maintain scalable backend services and APIs in C#/.NET. Lead migration of services from Node.js/Golang to .NET, optimize performance and reliability, implement secure coding, participate in code reviews, collaborate across teams, and contribute to CI/CD, observability, and technical documentation.
Senior .NET developer
Experience : 5 - 7 YOE
About Lumel
Lumel Technologies is a leader in modern, end-to-end Enterprise Performance Management (EPM) products & solutions. The suite of products enables planning, reporting, analytics and data governance on a single platform. We leverage your existing data platform investments and drive cost savings by avoiding extensive ETL and complex customizations. In other words, with Lumel, you can bring Planning to your data, rather than moving your data around or creating new data marts. Our Real-Time Integrated Planning Suite offers dozens of out-of-the-box features with extensive data management capabilities, including metadata management designed for business users. Lumel's products feature a user-centric design that empowers business users while reducing reliance on consultants and IT developers. The firm has been delivering innovative products for more than a decade and serves over 3,000 customers worldwide.
About the Role
Looking for experienced .NET developers having a strong background in building scalable products.
At Lumel you will play a key role in our technology transformation as we migrate existing services from Node.js and Golang into .NET,
Key Responsibilities
- Design, develop, test, and maintain backend services and APIs using C#/ .NET
- Lead the migration of existing services from Node.js and Golang to .NET, ensuring feature parity and performance improvements.
- Collaborate with product managers, architects, DevOps, and frontend teams to deliver high-quality product features.
- Optimize application performance, scalability, and reliability.
- Implement secure coding standards, error handling, observability, and logging.
- Write clean, maintainable, testable code following software engineering best practices.
- Participate in code reviews, technical design discussions, and architecture planning.
- Contribute to CI/CD pipelines and automated testing initiatives.
- Document technical specifications, workflows, and architectural decisions.
Required Skills & Qualifications
- 5+ years of experience in backend development with C#/.NET.
- Proven experience building high-availability, distributed systems or SaaS products.
- Strong understanding of RESTful APIs, microservices, and event-driven architecture.
- Hands-on experience with Entity Framework Core, SQL databases (MSSQL, PostgreSQL), NoSQL stores (Redis, MongoDB), and caching strategies.
- Solid understanding of cloud platforms (Azure preferred; AWS/GCP acceptable).
- Experience with containerization (Docker, Kubernetes).
- Familiarity with migrating or refactoring codebases into .NET is a strong plus.
- Experience with CI/CD tools (Azure DevOps, GitHub Actions, Jenkins, etc.).
- Strong debugging, troubleshooting, and performance optimization skills.
- Excellent communication and collaboration skills.
Nice-to-Have
- Prior experience migrating from Node.js or Golang into .NET.
- Experience with Domain-Driven Design (DDD) or clean architecture.
- Knowledge of message queues (Kafka, RabbitMQ, Azure Service Bus).
- Exposure to frontend frameworks (React/Angular) is a plus, but not required.
- Understanding of secure coding practices (OWASP, identity/auth).
What We Offer
- Opportunity to work on large-scale product engineering challenges.
- Influence architecture and engineering decisions during a major platform migration.
- Collaborative, product-focused engineering culture.
- Competitive compensation and growth opportunities.
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