Full Stack Engineer, Associate (.Net + React)

Full Stack Developer (Associate) — London Engineering Team (Preqin & eFront | BlackRock) 

Preqin (part of BlackRock) is looking for a skilled Full Stack Developer (Associate) to join our London Engineering Team. In this role, you’ll help design, build, and run products across Preqin and eFront, supporting applications used by clients globally. 

You’ll collaborate with a high-performing, international team and work across both the technical and functional layers of the product in a fast-growing Private Markets environment. You’ll contribute to delivering scalable, cloud-first solutions using modern engineering practices and technologies including .NET, Azure, and modern web frameworks. Python, AWS and Snowflake experience are a plus. 

Technologies & Concepts 

• Backend: .NET 8 / .NET 10 (primary) 

• Frontend: React / TypeScript / Micro front-end architecture 

• Cloud: Azure services (primary); AWS (nice to have) 

• Data: MS SQL, MongoDB, Snowflake 

• APIs: gRPC and REST 

• Architecture: Microservices, cloud-native distributed systems 

• Containerisation & Orchestration: Containers, Kubernetes, orchestration tools and patterns 

• Python: Nice to have / plus 

Responsibilities 

• Build new features end-to-end, from concept through production deployment 

• Take ownership of parts of a SaaS product, including production monitoring and incident resolution in the cloud 

• Apply information security practices throughout design and delivery 

• Contribute to continuous improvement of engineering ways of working (CI/CD, automated testing, best practices) 

• Collaborate with a talented, open-minded team with a strong innovation mindset 

Essential Skills & Experience 

• Bachelor’s or Master’s degree in Electrical Engineering, Computer Science, Mathematics, Organizational Sciences, or a related field (or equivalent experience) 

• 2–5 years of experience in backend development (.NET) and frontend development with modern frameworks (React/TypeScript) 

• Strong understanding of OOP concepts and engineering best practices 

• Experience building and consuming APIs using gRPC and/or REST 

• Understanding of microservices architecture and development 

• Understanding of containerisation and deploying cloud-native applications 

• Fluent English (written and spoken) 

• Ability to navigate and understand an existing codebase 

• Interest in the functional side of the product; finance industry knowledge is a plus 

• Strong analytical and problem-solving skills; proactive and able to handle multiple workstreams 

Nice to have 

• Python experience 

• AWS exposure 

• Familiarity with CI/CD pipelines and DevOps practices