Senior .NET Developer (FIX Protocol)

Avenga is an international engineering firm helping businesses operate with AI at the core. With 6,000+ experts worldwide, we combine engineering expertise with AI-native thinking to turn ambitious ideas into real-world impact across industries, technologies, and markets. At the core of the role We are looking for 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. Core skills you’ll bring 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 Quant

Lib (or similar quantitative finance libraries) O

Auth2, OpenID Connect, Identity

Server or similar authentication frameworks MongoDB or other NoSQL databases Experience in capital markets, fintech, trading platforms, fixed income, securities pricing Nice-to-have Datadog, Sentry, Elasticsearch SignalR / WebSockets Pulsar, Databricks, Lakehouse React + Redux (nice to have) Experience mentoring engineers / technical leadership The impa