We’re on a mission to make migration easy.

We started building Marshmallow in 2017. Since then, we’ve grown from 3 to 700+ people, gained unicorn status, raised ~£140M over three funding rounds, turned profitable, insured millions of drivers and lent millions in car loans.

But we’re only just getting started. Our goal is to become one of the largest financial services providers in the world. Over the next 10 years we’ll grow exponentially, not only by scaling our existing products, but also by building new ones.

To achieve our goals we need incredibly ambitious, commercially driven people who never settle for ‘good enough’. Marshmallowers are hungry for autonomy and ownership, and would rather improve than coast. Everyone raises standards and has an impact, with a focus on collective success over self-interest.

We’ve created an environment where curious, tenacious people win and grow together. If that sounds motivating, this could be the place for you.

Engineering at Marshmallow

Marshmallow are looking for engineers to tackle complex challenges. So we can make migration easy for hundreds of millions of relocators around the world. Across frontend, backend and full stack, working alongside designers, data scientists and product managers; you’ll be at the heart of every solution we offer.

Builders of dynamic new products. Pioneers of new tools and technologies. Open collaborators. Clear communicators. Engineers take ownership of projects from end-to-end to turn goals and vision into reality. With a clear view of where the business is headed and resources readily available to make sure we get there.

You’ll have real-world impact creating trailblazing products, true visibility across the business, and the support to share your ideas, ask for what you need and progress.
Learn fast and move forward with an engineering career at Marshmallow.

If you're curious about our Engineering culture and ways of working, check out the Engineering Handbook.

About our Claims Team you’ll be joining

Claims Tech is a distributed team across London and Budapest, with a purpose to revolutionise the claims journey. Our mission is to streamline the claims process, reducing costs, enhancing the customer experience, and empowering our operational team to reach their full potential. Three engineering teams specialize in the First party, Third party and Fraud verticals.

Currently, we are in the process of developing our cutting-edge internal Claims Management System (CMS). This application is designed to seamlessly guide insurance claims from inception to resolution. It handles every facet of the claims process (internal, external, customer-facing), integrating with partners as well as the financial reporting.

Our commitment to innovation and excellence is at the core of everything we do, and the Claims Management System is a testament to our dedication to achieving industry-leading results in claims management.

What you'll be doing

Working in a product team enabling efficient automation for tens of thousands of policies, ensuring that we provide customers with affordable, instant, and inclusive insurance
Manages and executes ambiguous technical solutions with appropriate sense of urgency to deliver impact within the team.
Creates and promotes efficiency and speed within the team by improving existing solutions and developing new ones
Partners with stakeholders to understand requirements, build solutions, deliver functionality, write automation tests and build continuous delivery pipelines all the way through to deployment, monitoring and supporting these systems in production

What we’re looking for from you

6+ years of software engineering experience
Expertise in Java and Spring and the eagerness to learn more
Experience with developing and scaling complex microservices systems
Previous experience with identifying, analysing, and resolving system availability, reliability, and performance issues
Experience mentoring and guiding more junior members of the team
Full-stack experience with React is an advantageOur Tech Stack

Backend: Latest Java μService, Spring Boot with Spring Cloud, Dynamodb, Terraform, Docker, AWS Fargate, Datadog, Opslevel, and TeamCity.
Frontend: TypeScript, CSS-in-JS (Styled Components), React, Redux, Redux Hooks, and other modern state management libraries. Kotlin on Android and Swift on iOS.
Data: SQL, Python, Snowflake (warehousing), dbt (modelling), Airflow (orchestration) & Looker (BI/visualisation).
AI: Sierra.ai for conversational AI, Sagemaker and Tecton for machine learning, Python and LangChain for agentic AI solutions, and Cursor, Claude Code and Junie for developer productivity.

Perks of the job

Flexi-office working – Spend at least 3 days a week with your team in our Budapest office. The rest is up to you! 🏠 Plus you have 4 weeks of Work From Anywhere to use, with no need to come to the office.
Competitive bonus scheme - designed to reward and recognise high performance 🌟
4-week fully paid sabbatical after being with us for 4 years 🌍
Learning and development – Personal budgets for books and training courses to help you grow in your role. Plus 2 days a year - on us! - to further your skillset 🤓
Mental wellbeing support – Access therapy and mental health sessions through Oliva 💚
SZÉP card - Budget to spend on meals, leisure and accommodation 🏝
Medicover Blue Package - An exclusive pass to top-notch healthcare services 🩺
Company-wide Marshmallow Engineering Hackathon twice a year 💻

Our process

We break it up into 3 stages:

Initial call with Tech Talent Acquisition team (45 mins)
Tech interview with two engineers which is centred around pair programming, systems design and technical questions (1 hour 30 minutes)
A past experience & culture interview with one of our engineering managers to check that your ways of working aligns with our processes, mission and values (1 hour)
We’ll let you know if you’re invited to an interview or not. But, as a small team with a lot of applications to consider, we can’t give individual feedback on each application

#LI-OK1

Diversity of thought

We know the best ideas come from having different perspectives in the room - and we're committed to hiring fairly, regardless of background, identity or experience. If you see yourself in this role, we'd encourage you to apply.

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Senior Software Engineer