Location:
Bristol Design Centre, Bradley Stoke (Hybrid Working Available)

Our Team:
Join a world-class engineering team at Semtech’s Bristol Design Centre, where we’re developing high-performance semiconductor solutions that enable next-generation optical access networks. As a market leader in PON ONU chipsets—supporting legacy GPON, current 10Gbps XG(S)PON, and future 25G/50G applications—we design advanced APD/PIN TIAs, laser drivers, receivers, and integrated transceivers powering global fibre-to-the-home (FTTH) infrastructure. You'll work alongside talented RF IC designers and engineers, collaborating across multiple disciplines to shape the future of high-speed connectivity.

Job Summary:

This is a hands-on, technically demanding role for an experienced engineer with a passion for precision testing, signal integrity, and cross-functional collaboration. As a Senior Staff Characterisation Engineer, you’ll be responsible for the bring-up, automation, and execution of test systems for high-speed mixed-signal ICs. Using state-of-the-art bench equipment (DCA, BERT, LCA, etc.) and Python-based automation, you'll measure, analyse, and report product performance across PVT conditions, supporting successful new product introductions from early development through to release.

If you thrive in a fast-paced R&D environment, love solving technical challenges, and want to work on products used in millions of homes worldwide, this is your opportunity.

Responsibilities:

• Collaborate closely across functions—design, validation, test, product, and applications—throughout the full NPI lifecycle.
• Develop and execute detailed characterisation test plans for new mixed-signal/optical ICs.
• Specify and configure lab-based test equipment for high-speed optical/electrical characterisation.
• Design and implement test setups including PCBs, fixturing, and integration of test instruments.
• Develop Python-based automation software to streamline characterisation workflows.
• Perform hands-on lab testing using BERTs, DCAs, VNAs, and other high-frequency equipment.
• Analyse data and produce high-quality reports, presenting findings in formal design and review meetings.
• Troubleshoot unexpected results, identify root causes, and work proactively to de-bug and resolve issues.
• Prioritise and manage tasks effectively, ensuring delivery of characterisation results to schedule.
• Build and maintain strong cross-functional relationships to drive progress and ensure product success.

Minimum Qualifications:

• BSc/MSc in Electrical/Electronic Engineering, or HNC/HND with equivalent industry experience.
• Proven ability to work under pressure in a fast-paced, dynamic R&D environment.
• Strong teamwork and communication skills—collaborative, reliable, and transparent.
• Excellent analytical thinking and attention to detail.
• Able to self-learn and independently acquire technical knowledge.
• Passion for problem-solving and creative innovation.

Desired Qualifications:

• 5+ years of experience in the semiconductor or optical communications industry.
• Strong fundamentals in signal integrity and high-speed lab testing.
• Proficient in Python scripting for test automation.
• Experience with test instrumentation such as BERTs, DCAs, VNAs, and LCAs.

Career Growth Philosophy:
At Semtech, we believe that innovation starts with people. That’s why we’re committed to empowering your professional development—through access to mentorship, learning resources, and a collaborative, idea-rich environment. Our pay-for-performance culture rewards initiative, encourages growth, and celebrates meaningful contributions.

Join us, and be part of a team that’s building the future of connectivity—together.