Join to apply for the Senior Python Developer role at City Science
Salary: From £50,000 per annum DOE
Location: Remote with flexible working arrangements. All UK based locations considered. Flexible office collaboration spaces available in Birmingham, Bristol, Exeter and London.
Term/Hours: Permanent. 32‑40 hours per week, with flexibility over working pattern – please state in your application.
Closing Date for applications: Monday 5th January 2026
About The Role
We are looking for an experienced Senior Python Developer to take a leading role in designing, implementing, and maintaining high‑quality Python‑based software. You’ll collaborate closely with data scientists, engineers, and domain experts to turn complex analytical requirements into reliable, maintainable software within a supportive, high‑performing team.
- Design, build, and improve Python applications that support modelling, simulation, optimisation, and data processing.
- Lead on engineering decisions, architecture discussions, and technical problem solving.
- Translate analytical or modelling needs into efficient production‑ready software.
- Ensure high code quality through testing, documentation, and code reviews.
- Work collaboratively across disciplines to integrate tools and deliver results.
- Contribute to continuous improvement of tools, processes, and engineering standards.
- Take ownership of deliverables and help drive project success with urgency and accountability.
About Us
City Science is an SME founded in 2015 with a core mission of delivering decarbonisation. We help organisations who are committed to decarbonisation achieve meaningful and quantifiable carbon reductions quickly and efficiently.
Essential Qualifications
- Strong professional experience as a Python developer, operating at or near a senior level.
- Excellent proficiency in Python and its ecosystem (libraries, tooling, best practices).
- Experience building production‑grade applications, ideally within data‑rich or scientific domains.
- Ability to write clean, maintainable, well‑tested code.
- Strong problem‑solving skills and the ability to communicate technical concepts clearly.
- Experience working collaboratively in multidisciplinary teams.
Desirable Skills
- Experience with geospatial tools (e.g., GeoPandas, Shapely).
- Familiarity with scientific computing, simulation, or optimisation libraries.
- Cloud experience (AWS, Azure, GCP).
- Understanding of decarbonisation, energy systems, or transport modelling.
Aligned to Our Values
- Excellence: Commitment to high standards in your code, solutions, and engineering decisions.
- Ownership & Accountability: You take responsibility for outcomes and proactively drive progress.
- Data‑Driven: You use evidence, analytical thinking, and testing to guide choices.
- Results Oriented: You focus on delivering meaningful outputs that create real‑world impact.
- Adaptability & Learning: You embrace change, seek out new knowledge, and learn quickly.
- Passion & Urgency: You care about what you build and work with purpose to achieve it.
- Meritocracy: You value competence, fairness, and helping raise the bar across the team.
- Entrepreneurial: You’re resourceful, creative, and eager to contribute ideas that move the business forward.
What We Offer
- Fully remote working, supported by optional access to co‑working hubs across the UK.
- Flexible working hours to support work‑life balance.
- Opportunity to join a talented, friendly, and supportive team of engineers, data scientists, and domain experts.
- Work on impactful projects in the decarbonisation and sustainability space.
- Real opportunities to grow, learn, and shape the direction of exciting new products and capabilities.
- 25 days annual leave entitlement, plus bank holidays.
- Membership of our group pension scheme.
- Enhanced maternity and paternity policy.
- Eye care policy.
- Cycle to work scheme.
- Employee assistance program.
Application Process
- Your resume highlighting relevant backend and testing experience.
- Examples of projects demonstrating your technical skills.
- Links to relevant code repositories or portfolio work.
Good luck!
Senior Python Developer employer: City Science
At City Science, we pride ourselves on being an excellent employer that champions innovation and collaboration in the fight against climate change. Our remote work culture fosters flexibility and inclusivity, while our commitment to employee growth ensures you will have access to continuous learning opportunities and mentorship from industry experts. Join us in making a meaningful impact on decarbonisation pathways, all while enjoying the unique advantage of working within a multidisciplinary team dedicated to evidence-based solutions.
