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Senior Kotlin/JVM Engineer

Lendable· LondonLicensed sponsor
Posted 22 Dec 2025 · Added 18 Jun 2026, 18:53
TS + React
Lendable3.3 (6)11 to 50 employees
Levels.fyi · global compSWE £92k TC (£80k–£105k)
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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

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/JVM Engineer. 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 FinTech, 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, a Superapp 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 or JVM based engineering experience that enables them to not only deliver elegant, idiomatic solutions in Kotlin or Java 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; building and integrating new API’s, tuning our existing services as they scale, 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.

There is more to read about us and our Lendies in the engineering blog right here and if you’d like to check our reviews out on Glassdoor you can see these here.

Our Tech Stack

Backend

Kotlin 1.7.20

AWS

GraphQL (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, TypeScript, MobX, Redux, Stylus and SASS

Other

We build our Kotlin projects using Gradle and GitHub Actions, deploying to production as soon as we finish a feature

We use JUnit Jupiter, Kotest and TestContainers for automated testing

What we’re looking for technically

Strong commercial Kotlin or JVM based engineering experience (willingness to work with Kotlin)

An ability to write simple, clean code

Experience and understanding of databases; relational databases are a must, NoSql 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 when to go to their peers for help

Someone who is a rational thinker and is aware of the ‘why’ behind the way they do things

Someone who is a pragmatist who can sensibly weigh the tradeoffs between code quality and delivery

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.

Check out our blog!