# Software Engineer at Refeyn

- Company: Refeyn
- What the company does: Arago Biosciences is specializing in label-free single molecule imaging and mass measurement. Backed by Oxford Science Enterprises.
- Company website: https://refeyn.com
- Type: Startups
- Level: Mid level
- Location: Oxford
- Work setup: On-site
- Posted: 2026-11-06
- Apply by: 2026-12-21
- Apply: https://job-boards.eu.greenhouse.io/refeyn/jobs/5012901101?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/refeyn-software-engineer/

## About the role

Mass photometry — a technique developed at the University of Oxford for measuring the mass of individual particles in solution with a specialised microscope — is at the heart of what Refeyn does. Since spinning out in 2017, we've grown mass photometry from an academic breakthrough into a technology now widely used in biological research and increasingly adopted across the bioprocessing industry to develop and characterise drugs. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Python (OOP), plus Rust or C++, and modern development practices
- GUI development experience (Qt, PySide6, QtQuick/QML) and a good eye for usability
- Familiarity with scientific computing and machine learning — NumPy, SciPy, Jupyter, PyTorch, Matplotlib
- Knowledge of CI/CD (e.g. GitHub Actions) and version control with Git
- Experience with Jira and Confluence in a hybrid agile/waterfall environment
- Familiarity with testing and code-quality tools such as pytest, mypy, and pylint

Tags: Software

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/refeyn-software-engineer/