2 of 2 Permanent Senior Integration Engineer Jobs in the City of London

Senior Integration Engineer Up to £90,000 DOE London I’m working with a well-established organisation that’s embarking on a major platform modernisation and integration transformation . The business operates across several dynamic streams - including external partnerships - and is now investing in a new generation of API-driven and messaging-based infrastructure. They’re … looking for a Senior Integration Engineer to take a technical lead role in shaping how systems communicate, scale, and deliver value across the business. The Role You’ll be responsible for designing and developing high-performance integrations that connect core systems and partners, using C#, Python, and Azure cloud technologies . This is a hands-on engineering … role that also offers the opportunity to influence architecture, best practices, and technology direction. What You’ll Be Doing Designing, building, and maintaining high-throughput, reliable integration components using C# and Python Developing and optimising SQL interactions that underpin APIs and message-driven workflows Implementing asynchronous messaging via Azure Service Bus (or similar) to decouple systems and ensure scalability More ❯

Senior Backend Engineer (Telco Integration Lead) We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. This is not a standard backend role. … We are seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our “right to win”, and you will be the engineer responsible for building the bridge to it. You will be the Critical Path Owner for Track Zero, the … category of network-aware security, working directly with the world's leading carriers to turn their network data into a real-time defense against global fraud. Key Responsibilities Telco Integration & Architecture Own and build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. Architect and More ❯