A London based Optical Network Integration Team is now looking for a Senior Optical System Engineer with passion and experience in experiments, prototyping and testing. Offered on a Hybrid working basis, you will collaborate closely with a range of Engineers, working on optical system and network systems using automated measurements, as well as modelling while interfacing with other teams towards product development. You will work iteratively through a series of prototypes to deliver a production-grade solution. Develop and execute test plans for high-speed optical transceivers across the full product lifecycle (prototype, validation, production). Now is an exciting time to join a developer of new technologies Experience: In this Senior role, you should have experience with the following: Strong hands-on experience in optical communication systems development and testing, ideally at 100Gbps and above. In addition you will have experience with OLT/ONT PON system testing and integration. Expertise in burst-mode transceiver characterisation. A solid understanding of equalisation techniques (CTLE, FFE, DFE) for improving high-speed link performance is required. Proficiency in using high-speed measurement instruments (e.g., sampling oscilloscopes, BERTs, burst-mode analysers). Familiarity with optical components (lasers, photodiodes, burst-mode APDs/TIAs, modulators) and transceiver architectures. Experience with automated test systems and scripting (e.g., Python, C++,