Senior Modelling Engineer I
🔒 Confidential Employer
Posted 20 April 2026
LOCATION
London, UK
TYPE
Full-time
LEVEL
Mid-Senior level
SALARY
£78,375 / year
CATEGORY
Technology
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion
SKILLS
Python
Algorithms
Modelling
Software Engineering
Testing
Communication
Collaboration
CI/CD
FULL DESCRIPTION
[Employer hidden — view at passion-project.co.uk]
London, UK
GBP 70,125-78,375 / year + Equity
Posted on Apr 17, 2026
Apply now
What You’ll Do:
- Building, testing and delivering new and improved training features (such as strength plans, post injury plans, illness, weather etc)
- Experimenting to improve our training system with new algorithms, design patterns, optimisations and modelling approaches
- Coach and support engineers, providing guidance, mentorship, and code reviews without creating bottlenecks
- Collaborating with coaches to best deliver their expertise to users
- Using a data-led approach to influence algorithms where possible
- Designing and implementing test approaches to ensure consistency and accuracy of training
What You’ll Bring to the Team:
- We’d generally expect ~3+ years of experience in a software engineering, modelling focussed position for this role, however expect this to vary candidate to candidate!
- Proficiency in Python (object orientated) programming, with experience writing production quality code - a bonus for large python projects and leveraging scalable design patterns effectively
- Ability to design and implement complex algorithms and modelling components (e.g. exercise scheduling), and comfortable with quantitative methods and approaches to solving problems - gained through various experiences or studies (e.g., Computer Science, Mathematics, Physics, Engineering degree or equivalent practical experience)
- Demonstrate best practice in your own work, as well as collaborating with other engineers to elevate the quality and velocity of the team
- Testing modelling focused software to ensure quality and maintainability
- A pragmatic mindset, with excellent communication and collaboration skills
- Analytical and detail-oriented, with a commitment to producing high-quality work
- Enthusiasm for our ways of working which include
- Working in a fast-paced, iterative environment whilst maintaining engineering quality
- Iterative development, continuous deployment and test automation
- Knowledge sharing, pair programming, collaborative design & development
- Shared code ownership & cross-functional teams
It’d be a bonus if you:
- Experience with deployment, release cycles or CI/CD
- Experience delivering features end-to-end: from design, to implementation through to releasing, testing and supporting
- Experience in a product focussed organisation, building consumer facing applications
Compensation Overview & Benefits:
We’re offering a salary of £70,125-£78,375 per year, depending on experience, plus participation in Strava's long-term incentive (stock) programs.
Overview of our benefits are below:We’re also committed to continually evolving our benefits to support you as we grow. Here is a brief overview what we currently offer in the UK
- Flexible working – we typically spend 3 days a week together in our Vauxhall office
- ️ 25 days holiday, plus bank holidays
- Free [Employer hidden] & Strava subscriptions for you and 3 of your friends (get ready to be your friends fave person or save them for holiday presents!)
- Headspace membership
- Money every year to spend on gear, events and the gym!
- Private health insurance with Bupa and workplace pension scheme
- Modern Health is a mental wellness platform and app that combines technology with professional support to improve mental well-being and reduce stress
- Carrot fertility support - this benefits provider can provide inclusive fertility, hormonal health, and family-forming benefits to our global employee population and takes the burden off what we know can be a stressful process.
Compensation Range: £70,125 - £78,375
Apply now
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