[Hiring] Senior .NET Developer @Avenga

Role Description

We are looking for a strong backend engineer with experience in the FinTech domain, working on a microservices and event-driven architecture based on .NET, MongoDB, Redis, RabbitMQ (MassTransit), Pulsar, and Elasticsearch. Experienced in designing scalable distributed systems and collaborating within a 7-person engineering team. Additionally exposed to React development.

Qualifications

• 5+ years of backend development experience
• Strong C#/.NET (Java may be considered)
• Experience building and designing APIs
• Distributed messaging systems and event-driven architectures
• FIX Protocol experience in a capital markets / electronic trading environment
• Experience with financial calculations, pricing engines, or quantitative models
• Hands-on experience with QuantLib (or similar quantitative finance libraries)
• OAuth2, OpenID Connect, IdentityServer or similar authentication frameworks
• MongoDB or other NoSQL databases
• Experience in capital markets, fintech, trading platforms, fixed income, securities pricing

Requirements

• Design and develop high-quality backend services using C#/.NET
• Build and maintain ASP .NET service-side applications with a focus on scalability and long-term reliability
• Work with distributed messaging frameworks and event-driven architectures to support high-throughput trading systems
• Develop and optimize data solutions using NoSQL databases such as MongoDB
• Design and implement financial calculation engines, pricing models, and quantitative algorithms with a strong emphasis on accuracy and performance
• Implement and maintain FIX protocol integrations to support electronic trading workflows
• Design and enforce identity, authentication, and authorization solutions across backend services
• Integrate and work with observability platforms such as Datadog or Elasticsearch to support system monitoring and diagnostics
• Ensure numerical precision in financial computations, including proper handling of rounding, accruals, and market conventions
• Collaborate with product, UI/UX, frontend, and DevOps teams to align on development and deployment strategy
• Build reusable, testable backend infrastructure and uphold consistent coding standards across teams
• Implement telemetry and monitoring best practices using Sentry or equivalent tools
• Evaluate and adopt new technologies, frameworks, and design patterns to continuously improve engineering outcomes
• Mentor engineers on backend development best practices and foster a culture of engineering excellence
• Contribute to frontend solutions using React and Redux/Rematch where needed (nice to have)

Benefits

• Equal opportunities regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic
• Commitment to a respectful environment where everyone can be themselves, share their ideas, and feel that they belong