Lead Engineer (Contract) in London

Lead Engineer (Contract) in London

London Full-Time 60000 - 80000 £ / year (est.) No working from home possible
Stealth Startup

At a Glance

  • Tasks: Lead the development of a fintech platform and drive innovative features.
  • Company: Early-stage B2B fintech revolutionising credit management in the UK and Europe.
  • Benefits: Competitive pay, potential for permanent role with equity, and flexible working.
  • Other info: Dynamic startup environment with opportunities for growth and influence.
  • Why this job: Be at the forefront of fintech innovation and make a real impact.
  • Qualifications: 8+ years in engineering, strong backend skills, and TypeScript expertise.

The predicted salary is between 60000 - 80000 £ per year.

This is initially a rolling contract engagement. For the right person, there is a potential path to a permanent role with equity.

About the company

We're an early-stage B2B fintech building verification and credit management infrastructure for the UK and European markets. Our platform replaces a slow, manual onboarding process with an automated workflow that brings together company, credit, banking, and compliance data into a single credit decision.

About the role

We're looking for a senior engineer to take ownership of the platform and drive it forward, working directly with the founder. This is a hands-on, full-stack role weighted heavily toward the backend, building on an established codebase rather than starting from scratch. There is a lot still to build. The core platform is taking shape, and the roadmap ahead is substantial, spanning deeper verification and fraud tooling, post-onboarding monitoring, ERP integrations, and new markets. You'd be central to building it.

What you'll do

  • Own the technical direction and architecture of the platform and ship features end to end
  • Build and maintain integrations with external data providers, handling inconsistent formats, rate limits, and failures
  • Build new product features end to end, from the backend through to the interface
  • Ensure the platform handles sensitive data securely and in line with GDPR and other regulatory requirements
  • Keep the codebase clean, typed, and well-tested as it grows

What we're looking for

  • 8+ years of production engineering experience, with deep backend expertise and full-stack capability
  • Strong command of TypeScript and relational databases (schema design, transactions, migrations)
  • A track record of integrating third-party APIs in production and handling the messiness that comes with them
  • Comfort working independently and making sound architectural decisions with minimal oversight
  • Experience reading and extending a large, well-structured codebase

Nice to have

  • Background in fintech, regtech, or compliance
  • Experience with Open Banking, credit data, or company registry integrations
  • Early-stage or founding engineering experience

Details

Stack: TypeScript, PostgreSQL, serverless infrastructure

Competitive hourly or day rate, depending on experience

Start: immediate

Lead Engineer (Contract) in London employer: Stealth Startup

As an early-stage B2B fintech, we offer a dynamic and innovative work environment where you can take ownership of your projects and directly influence the platform's development. Our culture fosters collaboration and growth, providing opportunities for professional advancement and the potential for a permanent role with equity. Located in the heart of the UK fintech scene, we are at the forefront of transforming credit management infrastructure, making this an exciting place to build your career.

Stealth Startup

Contact Details:

Stealth Startup Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Lead Engineer (Contract) in London

Tip Number 1

Network like a pro! Reach out to your connections in the fintech space and let them know you're on the lookout for opportunities. A personal recommendation can go a long way in landing that Lead Engineer role.

Tip Number 2

Show off your skills! Consider building a small project or contributing to open-source work that showcases your backend expertise and TypeScript skills. This gives you something tangible to discuss during interviews.

Tip Number 3

Prepare for technical interviews by brushing up on your knowledge of relational databases and API integrations. We recommend practising coding challenges that focus on backend development to get you in the zone.

Tip Number 4

Don't forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you're genuinely interested in joining our team.

We think you need these skills to ace Lead Engineer (Contract) in London

Backend Development
Full-Stack Development
TypeScript
Relational Databases
API Integration
Data Security
GDPR Compliance

Some tips for your application 🫡

Show Your Passion for Fintech:When writing your application, let us know why you're excited about the fintech space. Share any relevant experiences or projects that highlight your interest in building innovative solutions for credit management and verification.

Highlight Your Technical Skills:Make sure to showcase your backend expertise and full-stack capabilities clearly. Mention your experience with TypeScript, relational databases, and any integrations you've done with third-party APIs. We want to see how you can contribute to our platform!

Be Clear and Concise:Keep your application straightforward and to the point. Use bullet points where necessary to make it easy for us to read through your qualifications and experiences. We appreciate clarity as much as you do!

Apply Through Our Website:We encourage you to submit your application directly through our website. This way, we can ensure your application gets the attention it deserves, and you'll be one step closer to joining our team!

How to prepare for a job interview at Stealth Startup

Know Your Tech Stack Inside Out

Make sure you’re well-versed in TypeScript and PostgreSQL, as these are crucial for the role. Brush up on your knowledge of relational databases, schema design, and how to handle third-party API integrations, as you'll likely be asked about your experience with these during the interview.

Showcase Your Problem-Solving Skills

Prepare to discuss specific challenges you've faced in previous roles, especially those related to backend development and integrating external data providers. Be ready to explain how you tackled issues like inconsistent data formats or rate limits, as this will demonstrate your hands-on experience and ability to think critically.

Understand the Company’s Vision

Familiarise yourself with the company’s mission in the fintech space and their product offerings. Being able to articulate how your skills align with their goals will show that you’re genuinely interested in the role and can contribute to their vision of building a robust verification and credit management platform.

Prepare Questions for Them

Think of insightful questions to ask about the technical direction of the platform and the roadmap ahead. This not only shows your enthusiasm but also helps you gauge if the company is the right fit for you. Ask about their approach to handling sensitive data and compliance, as these are key aspects of the role.