Ready to make massive impact with microscopic magic? Are you an experienced Senior Software Engineer (C#) with high‑level, production‑grade coding expertise and industrial automation skills? Ever dreamt of developing advanced software solutions for semiconductor inspection systems using Atomic Force Microscopy (AFM)? Would creating high‑performance, precision‑control software for metrology and defect‑inspection tools inspire you? Read on… Reward and Benefits : £58,000 to 65,000 (depending on experience) 25 days annual leave, death in service and private health care benefits, personal pension contributions of 4% with salary sacrifice and a generous EMI Share scheme Based in Abingdon, Oxford, UK, we are a high calibre team of 100 plus people and we are growing fast. We are backed by global financial and industry investors including Applied Ventures, the strategic venture arm of the industry leading equipment company. About the role: A typical day for a Senior Software Engineer (C#) could look like this: Designing and building slick C#/.NET software that powers next‑level AFM semiconductor inspection — basically levelling up nanoscale tech Running real‑time control loops that keep nanometre‑scale motion smooth, stable, and drama‑free Creating operator dashboards and HMI tools that are actually nice to use Plugging software into motion controllers, piezo actuators, and high‑res sensors Boosting system performance so scans are sharper, images load faster, and data processing hits different Keeping everything aligned with cleanroom standards and safety Teaming up with hardware, optics, electronics, and applications crews to deliver tightly integrated systems Testing, validating, and stress‑checking everything to make sure it meets ISO, IEC, and semiconductor‑level expectations Mentoring junior engineers, sharing the clever stuff, and helping shape software architecture that’s clean, scalable, and future‑proof Who we are looking for: To succeed as a Senior Software Engineer (C#), we do need you to have experience of: Around 5 years of experience building Windows-based software, with confident skills in C#, .NET, and WPF A good understanding of industrial automation, motion control, and how real‑time systems behave Some hands‑on experience with IPC tools and technologies: DDS, MQTT, ZeroMQ, RabbitMQ, Named Pipes A comfortable grasp of object‑oriented design, design patterns, and SOLID principles Enjoys problem‑solving and feels at ease working in a fast‑moving, high‑precision semiconductor environment Nice to have: Familiarity with semiconductor inspection tools, metrology systems, or image‑analysis workflows An interest in SCADA systems, HMI development, or industrial IoT technologies Experience with Python, C++, or other programming languages An understanding of networking concepts such as TCP/IP or routing Awareness of cleanroom practices and safety standards (e.g., IEC 61508) Comfortable communicating with others and happy to lead and mentor Education / Qualifications: Degree in Computer Science, Electrical Engineering, or related field (or equivalent experience). 5 years of experience in software development with strong proficiency in C#, WPF, .NET, and Windows-based applications. We look for these attributes for our team: Self-management: Able to work independently, setting priorities for own work based upon the company goals and targets. Teamwork: Engages with other members of the company to bring the best solutions to the problem. Recognise the value that fellow company members bring to enhance own abilities. Supports colleagues with their tasks when critical to the company goals. Impact and Influence: Establishes themselves as the knowledge centre in their own field. Ownership & Initiative: React and address both short- and medium-term issues and proactively takes action to solve them. Results Orientation: Focus on the company goal, avoid distraction, making timely decisions to achieve the target. A bit about us: Infinitesima is a privately owned company founded in 2001, as a spin-out of the University of Bristol, by CTO Professor Andrew Humphris. Our dynamic team of scientists and engineers is focussed on enabling the next generation of semiconductor devices through delivery of innovative products to customers around the world. Our strength lies in the varied perspectives that come from different cultures, experiences, and identities. We believe that true innovation is fuelled by collaboration, locally and globally. We strive to foster an environment where everyone can contribute meaningfully and thrive. If you require adjustments to take part in the recruitment process, please let us know, we’ll do our best to support you. Note to recruitment agencies: Infinitesima Ltd only works with approved agencies and does not accept unsolicited agency CVs. Please do not submit candidate details in response to this advert, or to any Infinitesima Ltd employees. Infinitesima Ltd is not responsible for any fees related to unsolicited CVs. If you’re interested in APPLYING (respectfully, no agencies) for this role, feel free to reach out to me for more information: sunny.montague@infinitesima.com