About Marshmallow We build financial products that accelerate the economic freedom for people who move across borders. We started with car insurance — insuring over a million drivers — and we’re scaling beyond. Tens of millions of people move countries each year, facing overlooked financial challenges. Our future is in building financial products around their needs to positively impact their lives.

What You’ll Be Doing

• Drive Technical Excellence: Lead the design and implementation of innovative, secure, and performant solutions. Focus on redundancy, scalability, and system resilience while enforcing best coding practices and security protocols.
• Influence and Lead by Example: Mentor engineers, guide technical direction, and set high standards for the team, pushing for quality results without direct management responsibilities.
• Strategic Thinking: Align technical work with long-term business goals, evaluating build vs. buy decisions, investigating external vendors, and working closely with AWS or other cloud platforms to ensure scalable and cost-efficient solutions.
• Collaborate Cross-Functionally: Work with product managers, data scientists, and non-technical stakeholders to prioritize and deliver projects that meet both technical and business needs. Provide visibility into technical progress and translate complex concepts into actionable insights.
• Cross-Domain Problem Solving: Tackle complex challenges across multiple teams, proactively optimizing systems, and solving critical issues that balance technical and business constraints.

Who You Are

• Technical Mastery: Deep expertise in your domain and a broad understanding of adjacent fields, enabling sound architectural decisions and solutions to complex challenges.
• Strategic Vision: You think long-term, aligning technical decisions with business goals, and ensuring solutions are scalable and future-proof.
• Influence and Mentorship: You guide technical discussions, mentor engineers, and elevate the performance of those around you.
• Communication and Collaboration: You excel at translating technical details into business impacts and work seamlessly with technical and non-technical stakeholders.
• Problem-Solving Prowess: You solve complex problems with practical solutions that balance technical and business needs.
• Resilience and Adaptability: You thrive in a fast-paced environment and maintain high-quality output amid changing priorities.
• (Bonus) Domain Expertise: Relevant domain knowledge helps you make informed decisions and address industry-specific challenges.

What We’re Looking For From You

• 5+ years as a senior software engineer
• 2+ years in a technical leadership or staff engineer role, delivering scalable, high-quality solutions.
• Solid experience across the full stack, with deep expertise in backend development, system design, and architecture, driving complex technical decisions.
• Experience with public cloud technologies (e.g., AWS, Azure, GCP)
• Excellent communication skills, able to translate technical concepts into business impacts.
• Proven experience mentoring engineers and fostering a culture of continuous improvement.
• Strong experience driving Operational Excellence, leading initiatives that made systems more reliable, scalable, secure, performant, and easy to maintain.

Our Tech Stack

• Java 22 μServices
• Spring Boot with Spring Cloud
• MySQL
• Terraform
• Docker
• AWS Fargate
• Event Sourcing
• Datadog, Opslevel, Teamcity

Perks of the job

• Flexible working: Spend 3 days a week with your team in our new collaborative London office.
• Sabbatical Leave - Get a 4-week fully paid sabbatical after being with us for 4 years
• Work From Anywhere - 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
• Flexible benefits budget - £50 per month to spend on a Ben Mastercard meaning you get your own benefits budget to spend on things you want.
• 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
• Private health care - Enjoy all the benefits Vitality has to offer, including reduced gym memberships and discounts on smartwatches
• Medical cash plan - To help you with the costs of dental, optical and physio (plus more!)
• Tech scheme - Get the latest tech for less

Our process

We Break It Up Into 4 Stages

• Initial call with our Tech Talent Acquisition Partner (30-45 mins)
• A past experience interview where you will discuss your previous experience with one of our Engineering Managers (1.5 hours)
• An interview with one of our Tech Leads to discuss your understanding of technology and your ways of working with the team (1 hour)
• A culture interview with one of our senior leadership team to understand that your work style fits our processes and values (1 hour)

We’ll let you know if you’re invited to an interview or not. We can’t provide 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!

Equality and inclusion

Everyone belongs at Marshmallow. We’re committed to hiring without judgement, prejudice or bias. We encourage everyone to apply for open roles. Gender identity, race, ethnicity, sexual orientation, age or background does not affect how we process job applications. We’re working to build an inclusive culture that empowers our people to do their best work, have fun and feel that they belong.

Recruitment privacy

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

Seniority level Mid-Senior level

Employment type Full-time

Job function Engineering and Information Technology

Industries Insurance