Lead Product Engineer

Primis; Greater London; On-site; GBP 100,000 - 125,000; Full time

Job summary

A fast-growing venture-backed startup in Greater London is seeking a Lead Product Engineer to build and enhance their platform using Python and TypeScript. This role involves taking ownership of features, influencing technical strategy, and collaborating with cross-functional teams. The ideal candidate is adaptable, has mastery in a technical area, and enjoys mentoring while embracing new challenges. This is an exciting opportunity to join a foundational team with meaningful equity potential.

Qualifications

• Mastery in at least one technical area.
• Strong desire to learn and expand capabilities.
• Ability to handle complex architectures.

Responsibilities

• Build backend services using FastAPI and dynamic frontends using Next.js.
• Own features from conception to deployment.
• Collaborate with engineers and data scientists.

Skills

Proficiency in Python

Proficiency in TypeScript

Adaptability

Systems thinking

Collaborative partnership

Tools

FastAPI

Next.js

Job description

Be part of a fast-growing, venture-backed US startup during a transformative phase. Fresh off a major funding round and expanding into the UK market, this is your chance to secure meaningful equity as a foundational team member.

As a Lead Product Engineer, you'll be instrumental in building and evolving the platform using Python and TypeScript, driving impact across the entire stack.

Your Impact:

• Build robust backend services with FastAPI (Python) and dynamic frontends using Next.js (TypeScript)
• Take complete ownership of features - from conception and user experience through to deployment and operations
• Move fluidly between different parts of the codebase, adapting to where value can be delivered fastest
• Influence technical strategy and help define the product roadmap
• Collaborate closely with engineers, data scientists, andexperience a agile surrounding cross-functional setup
• Mentor teammates while expanding your own technical horizons

What Makes You a Great Fit:

• Core competencies - Proficiency in Python, TypeScript, or both (or a strong appetite to develop these skills)
Learning orientation - You're deliberate about expanding your capabilities and evolving as an engineer
• Technical depth - You've achieved true mastery in at least one area; they value expertise over specific technologies
• Adaptability - You excel when faced with ambiguous requirements and open-ended technical challengesApplicant\
• Systems thinking - You can quickly understand complex architectures and contribute meaningfully from day one
• Team dynamics - You're effective both as a collaborative partner and an autonomous contributor

Bonus Points:

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Familiarity with contemporary frontend technologies (React ecosystem, etc)

Note: this role will not be able to provide sponsorship support.

For more information, please apply!

Research shows that candidates from underrepresented groups often wait until they meet nearly all requirements before applying, while others apply when meeting just 50-60%. If this role excites you and you meet many—but not all—of these criteria, we still want to hear from you.

We actively encourage applications from underrepresented talent and are committed to supporting accessibility needs throughout our hiring process.