Remote Senior Python Lead for Energy & Decarbonisation

City Science; Peggs Green; Remote; GBP 60,000 - 90,000; Full time

Job summary

City Science is seeking an experienced Python developer to lead and deliver production-grade software for energy modelling within DESNZ collaborations. The role combines hands-on design with line management of developers and mentoring across the team.

You will design, build and improve Python packages for modelling, simulation and data processing, lead architecture discussions, and drive continuous engineering excellence while delivering tangible decarbonisation outcomes.

Qualifications

• Strong professional experience as a Python developer, at or near senior level.
• Excellent command of Python and its ecosystem, including libraries, tooling and best practice.
• Track record of building production-grade applications, ideally in data-rich or scientific domains.
• Ability to write clean, maintainable, well-tested code.
• Experience line managing or mentoring developers, or willingness to take on line management responsibilities.
• Strong problem-solving skills and the ability to explain technical ideas clearly to technical and non-technical audiences.
• Experience working in multidisciplinary teams.

Responsibilities

• Design, build and improve Python packages for modelling, simulation and data processing.
• Lead engineering decisions, architecture discussions and technical problem solving.
• Turn analytical and modelling needs into shippable software.
• Line manage one or more developers: regular one-to-ones, objective setting, performance reviews and support for their development.
• Mentor colleagues across the team and set a strong example through code reviews, pairing and knowledge sharing.
• Maintain high code quality through testing, documentation and thorough code reviews.
• Work across disciplines to integrate tools and deliver results for our customers.
• Drive continuous improvement in our tools, processes and engineering standards.

Skills

Senior Python

Python ecosystem

Production-grade apps

Clean code

Line management

Problem solving

Team collaboration

Tools

Pydantic

JSON Schema

GitLab CI/CD

Job description

City Science is seeking an experienced Python developer to lead and deliver production-grade software for energy modelling within DESNZ collaborations. The role combines hands-on design with line management of developers and mentoring across the team.

You will design, build and improve Python packages for modelling, simulation and data processing, lead architecture discussions, and drive continuous engineering excellence while delivering tangible decarbonisation outcomes.