Lead Python Engineer in London

hackajob is collaborating with Lendable to connect them with exceptional professionals for this role.

About Lendable

Lendable is on a mission to build the world's best technology to help people get credit and save money. We're building one of the world’s leading fintech companies and are off to a strong start:

• One of the UK’s newest unicorns with a team of just over 700 people
• Among the fastest‑growing tech companies in the UK
• Profitable since 2017
• Backed by top investors including Balderton Capital and Goldman Sachs
• Loved by customers with the best reviews in the market (4.9 across 10,000s of reviews on Trustpilot)

So far, we’ve rebuilt the Big Three consumer finance products from scratch: loans, credit cards and car finance. We get money into our customers’ hands in minutes instead of days. We’re growing fast, and there’s a lot more to do: we’re going after the two biggest Western markets (UK and US) where trillions worth of financial products are held by big banks with dated systems and painful processes.

Join us if you want to take ownership across a broad remit. You are trusted to make decisions that drive a material impact on the direction and success of Lendable from day 1. Work in small teams of exceptional people, who are relentlessly resourceful to solve problems and find smarter solutions than the status quo. Build the best technology in‑house, using new data sources, machine learning and AI to make machines do the heavy lifting.

About the Role

We’re looking for a Lead Python Engineer to join our Data Team, where you’ll play a pivotal role in shaping the systems and data infrastructure that power our US products. In this role you’ll balance hands‑on engineering with team leadership — owning the technical direction of your squad, mentoring a small team of 1–2 engineers, and still getting deep into the code yourself. You’ll design and build robust data pipelines, APIs and services that drive real decisions across the business, all while keeping quality and scalability at the forefront. You’ll be a key voice in architectural discussions, helping to define how we build and evolve our data platform as we scale into the US market. No two days look the same here.

Our Tech Stack

Python and FastAPI, deployed via Docker and Kubernetes on AWS, with ArgoCD handling our continuous delivery pipeline.

What We’re Looking For

• Interest in leading or mentoring a small team of engineers, with the ability to balance hands‑on delivery with team development
• Deep, modern Python expertise; you write clean, idiomatic, well‑tested code and hold others to the same standard
• Some experience building and maintaining data pipelines, ETL processes, or data‑intensive backend services
• Solid understanding of FastAPI or a comparable modern Python web framework
• Strong automated testing skills across unit, integration, and functional levels
• Experience working with cloud infrastructure, ideally AWS, and comfortable with Docker and Kubernetes
• Ability to drive technical decisions and communicate clearly with both engineers and non‑technical stakeholders
• Experience in a cross‑functional or data‑focused engineering environment is a strong plus
• Familiarity with US financial products or regulated markets is a bonus, but not essential

Interview Process

• A quick phone call with one of the team
• A short coding exercise to complete in your own time
• Technical Video Interview for 60 minutes – meet the team you’ll work with daily
• Culture interview for 30 minutes
• Final Interview

Life at Lendable

• Winning team: the opportunity to scale up one of the world’s most successful fintech companies
• Flexible working: flexible approach tailored to each role. Hybrid roles require three days in‑office weekly; fully remote roles include regular opportunities for in‑person connection through socials and off‑sites
• Socials & connection: opportunities and events to come together, socialise, and get to know each other beyond the office walls
• Health coverage: support for your physical and mental wellbeing, including private health cover
• Retirement & savings: long‑term financial wellbeing through retirement savings plans
• Employee referral programme: earn a competitive bonus when you refer successful new team members
• Office meals & snacks: enjoy a fully stocked kitchen, plus complimentary lunches prepared by in‑house chefs on in‑office days at select locations
• Sustainable commuting: cycle‑to‑work and electric vehicle salary sacrifice schemes available in select locations

Please note: The availability and details of specific benefits vary by location and role. For more information, please speak to your Talent Partner.