Senior Backend Engineer - Fraud Team

About Marshmallow

We started Marshmallow when we found out how unfair insurance prices are for people who move to the UK. All because the industry hasn’t given this huge cohort of people a second’s thought, and isn’t set up to price them properly.

We saw an opportunity to do things differently, so we made it our mission to back the ones who step outside the norm. Since we started, we’ve helped 100,000s of people get a fairer deal on their car insurance. Using technology, we serve people that are often overlooked by financial services companies, solving important problems for people who need it most.

We know there are millions of marginalised customers out there. And we know that they face unique problems that most companies aren’t even aware of. We believe that our future is helping these people by learning about their experiences, and building our company around their needs. And there are strong signs that there’s a need for a company like us. Earlier this year we hit profitability, which is a huge milestone, but the most exciting thing is that we’re only just getting started.

How we work

We’re really proud of the culture we’ve created. We push for progress every day, because we know that we’ll only hit big milestones by taking lots of smaller steps. We’re always open to helping our team mates, sharing our ideas, experience and knowledge to solve problems together. We take risks, think creatively and experiment relentlessly to meet our customer’s needs, and never pass blame when things go wrong. We encourage people at all levels to take ownership of their work, and to be bold in challenging how we do things. Everyone has a voice and the opportunity to make an impact.

And autonomy and ownership are only possible with clear direction. That’s why we collaborate to do in-depth planning twice a year, and make sure we leave with clear goals and objectives that flow from top to bottom. To make sure we’re as aligned as possible across functions, most of our work rolls up into four tribes; Acquisition, Retention, Claims and Pricing, Underwriting & Fraud. Each tribe has multiple teams embedded in it, working cross-functionally to do great work.

We’re so excited for all of the challenges up ahead, and we need more people to help us tackle them! If life at Marshmallow sounds like it could be for you, explore our culture handbook or read our blog to find out more.

Engineering at Marshmallow

Our engineers are at the heart of the solutions. They work on product builds from start to finish, solving lots of challenges to help us build fast and scale up! Our engineers cover a range of skills across frontend, backend, full stack, iOS and android, and work alongside designers, data scientists, researchers and product managers within our product teams.

Our product teams include: the Renewals and Midterm team, the Cancellations and Payments team, the Mobile team and the Claims team (to name a few!) Each team sets its own roadmap, and actively pushes our codebase forward.

About our Fraud Tech Team you’ll be joining Our mission is to build a robust fraud platform dedicated to outsmarting fraudsters attempting to sneak past our defenses. With one of the most sophisticated tech stacks in the company, our work involves not just combating fraud but also continuously refining and simplifying our stack and processes to stay ahead in the game.

Our recent triumph involves the launch of our latest blocking service, a cutting-edge solution designed to halt fraudsters in their tracks. By leveraging information from across our business, we’re setting new benchmarks in preventing repeat offenders from making a comeback. We are now increasing the granularity of our fraud checks, extending them to cover more cases, and integrating with more advanced machine learning models to stay ahead of emerging threats. Additionally, we are committed to refactoring some of our legacy services to enhance performance and reliability. These initiatives, along with our ongoing efforts to boost the efficiency of our fraud agents, underscore our relentless dedication to fortifying our defenses against fraud.

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

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

Our Tech Stack

• Java 21 μServices
• Spring Boot with Spring Cloud
• DynamoDB
• Terraform
• Docker
• AWS Fargate
• Event Sourcing

Perks of the job

• Flexi-office working – Spend at least 1 day a week with your team in our Budapest office. The rest is up to you! 🏠
• Competitive bonus scheme - designed to reward and recognise high performance 🌟
• 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 🏝
• Company-wide Marshmallow Engineering Hackathon twice a year 💻
  Plus a monthly team social budget, bi-weekly office lunches and Office tea, coffee and snacks!

Our process

We break it up into 3 stages:

• Initial call with Tech Talent Acquisition team (40 mins)
• Tech interview with two engineers which is centred around pair programming, systems design and operational excellence 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

Background checks

To meet our regulatory obligations as an FCA-authorised financial services company, we need to do some background checks on all new hires. That means carrying out a DBS check and making sure you don't have any live criminal proceedings. Feel free to ask our Talent Acquisition team if you have any questions about this!

Everyone belongs at Marshmallow

At Marshmallow, we want to hire people from all walks of life with the passion and skills needed to help us achieve our company mission. To do that, we're committed to hiring without judgement, prejudice or bias.

We encourage everyone to apply for our open roles. Gender identity, race, ethnicity, sexual orientation, age or background does not affect how we process job applications.

We're working hard to build an inclusive culture that empowers our people to do their best work, have fun and feel that they belong.

Recruitment privacy policy

We take privacy seriously here at Marshmallow. Our Recruitment privacy notice explains how we process and handle your personal data. To find out more please view it here.