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Senior Kotlin Engineer

Job in Greater London, London, Greater London, EC1A, England, UK
Listing for: Lendable
Full Time position
Listed on 2026-01-13
Job specializations:
  • Software Development
    Software Engineer, Cloud Engineer - Software, Full Stack Developer, Kotlin
Job Description & How to Apply Below
Location: Greater London

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 600 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

As we continue to build upon the diversity of our team we are thrilled to have the opportunity to bring on board a Senior Kotlin engineer to a newly forming pod. This is an opportunity to bring new experience, perspective and capabilities to our design discussions, helping shape our approach to delivering elegant solutions to complex engineering challenges as we continue to grow.

This is the team that put the Tech in Fin Tech, our current tech team is around 80 strong and have helped transform finance by building a next-generation lending platform, a next‑gen credit card, and auto‑finance product, and they’re at it again with brand new product launches this year.

We’re looking for an engineer with a depth of knowledge and recent hands‑on Kotlin experience that enables them to not only deliver elegant, idiomatic solutions in Kotlin but also to contribute new knowledge and experience to our frequent collaborative design forums with stakeholders from every area of the business.

There’s a lot to do, from building and integrating new API’s to help build out our new collections function to creating new internal tools and supporting our expansion of new products and supporting services in the US.

We believe that software engineering is more than just code - it’s about people. We believe that the best teams are made of great people. That fundamentally great software engineering is about alignment, sharing what we know and being nice to each other. When we put all this together we make software engineering better by continually improving our capabilities as a team and making our working environment a happy and productive place.

Our

Tech Stack Backend
  • Kotlin 1.7.20
  • AWS
  • Graph

    QL (it would be nice if you were familiar with this but it’s not a deal breaker)
  • Postgres
  • RabbitMQ
  • Docker
  • Kubernetes
Frontend
  • React & React Native, Type Script, MobX, Redux, Stylus and SASS
Other
  • We build our Kotlin projects using Gradle and Git Hub Actions, deploying to production as soon as we finish a feature
  • We use JUnit Jupiter, Kotest and Test Containers for automated testing
What Technical Skills You’ll Need To Have
  • Strong commercial Kotlin experience
  • An ability to write simple, clean code
  • Experience and understanding of databases; relational databases are a must, No

    Sql would be nice too
  • Be able to quickly understand complex, financial business domains
  • Understand different software architectures rapidly
  • Understands abstraction and interpolation
  • Able to write comprehensive, automated tests at all levels of the pyramid
  • Understanding of the Kanban agile methodology; not a deal breaker if you don’t
What Kind Of Person You’ll Need To Be
  • Someone who can get along with others and build relationships
  • Someone who wants to continually learn, improve and collaborate
  • Someone who can solve problems on their own but also knows…
Position Requirements
10+ Years work experience
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