Senior Software Engineer, Form3
£80-120k
Salary for other locations is €65,000 - €140,000 EUR dependent on location
Payment technology platform
Posted today
Payment technology platform
201-500 employees
Posted today
£80-120k
Salary for other locations is €65,000 - €140,000 EUR dependent on location
201-500 employees
Company mission
To become the world's most trusted provider of payment technology.
Role
Who you are
- Deep understanding of designing and building distributed systems
- Enjoys working on complex challenges within critical software where high performance and robustness are essential
- Familiarity with cloud and containerisation technologies, test automation tools and CI/CD pipelines
- Interest in owning projects end-to-end and supporting them as they go live in production
- Appreciation of clean code and software engineering best-practice
- Experience with Go, along with a “right tool for the job” mentality
- Great communication skills who enjoy sharing knowledge and collaborating with others
What the job involves
- As a Senior Software Engineer at Form3, you’ll work on established, high-volume services that sit at the heart of Form3’s cloud-native payment platform. These are critical systems where reliability, resilience and operational excellence matter every single day
- This is a role for engineers who enjoy evolving critical systems at scale. You’ll be working on mature, high-volume services where thoughtful design, careful testing, operational discipline and reliability are just as important as delivering new capability
- You’ll solve complex engineering challenges across services that support real-time payment flows, high availability, fault tolerance, security and performance within a microservice architecture
- You’ll need to think carefully about how changes are designed, tested, released and operated, balancing delivery speed with the discipline required for mission-critical financial infrastructure
- You’ll work closely with experienced engineers, product teams and operational stakeholders to improve, evolve and run services that customers depend on
- This could include enhancing existing payment capabilities, improving service resilience, simplifying complex systems, reducing operational risk, or building new functionality into mature services without compromising stability
- Designing, building, and running cloud-native microservices in Go that are the backbone of our real-time payments platform
- Building systems that are highly available, low-latency, and scalable, handling billions of payment requests with precision and resilience
- Taking full ownership of services: from initial design and implementation to deployment and production support
- Working with a mindset where cost-efficiency, observability, and operational excellence are core to how we build
- Collaborating closely with other engineers in a flat, autonomous team structure, with a strong focus on code quality, simplicity, and continuous improvement
- Working with modern tooling and technologies such as Golang, Kubernetes, CockroachDB and NATS JetStream in a highly automated DevOps environment
- Here are a few of the tools and methodologies we utilise:
- Infrastructure: AWS, GCP, Azure, Kubernetes
- Platform: CockroachDB, NATS JetStream, Elasticsearch, Vault, Cilium
- Tools: Terraform, Flux, GitHub, Prometheus, Pact.io, Tilt
- Code: Go (and a little Java), containerised microservices, CQRS, open source
- Ways of working: TDD/BDD, Pair Programming, 100% remote, SecDevOps
Application process
- Stage 1: Screening Call with Talent Team
- Stage 2: Take home test
- Stage 3: Technical interview (may be separated into two parts)
- Stage 4: Team interview
- We always aim to stick to the above process, however there may be occasions when an additional interview stage is needed for us to be sure we find the best fit for the role!
Our take
Form3 provides a complete end-to-end Payments-as-a-Service for financial institutions and regulated fintechs. It allows businesses to offer direct payment services via a simple interface, modernising their payment technology to make it more reliable and secure.
People expect their user experience with financial transactions to be fast and secure. Modern businesses require money to be transmitted instantly, securely, and with the promise of being available worldwide in real time. Form3 has capitalised on this modern demand, offering a comprehensive but straightforward service which gives customers greater control of their payments.
The company's partnerships have been a strong part of its growth strategy, with its technology used by major enterprise including GOldman Sachs, Nationwide and Clarency. Recently, Nationwide Building Society has made a further strategic investment in Form3, alongside a debt facility from BlackRock, supporting the company's path to profitability and continued US expansion.
Form3 has also delivered some new solutions, such as Verification of Payee for European payments provider Mollie, helping clients meet evolving regulatory requirements while strengthening fraud prevention and operational resilience. Backed by leading financial institutions and reporting record performance in 2025, Form3 is sharpening its focus on scaling its cloud-native payments platform across the US and Europe.
Freddie
Company Specialist at Welcome to the Jungle
Insights
17% employee growth in 12 months
Company
Funding (last 2 of 6 rounds)
Sep 2024
$60m
SERIES C
Sep 2021
$160m
SERIES C
Total funding: $277.3m
Company benefits
- Flexible working aragmeents
- 30 days annual leave
- Home office equipment allowance
- Learning & Development
- Long term incentive plans
- Mental health support
- Primary caregiver leave
Company HQ
City of London, London, UK
Leadership
Mike Walters
(Co-Founder & CEO)Mike initially served as the company's CPO after co-founding it in 2016, moving into the role of CEO in 2023. Previously, he was a Product Director of Global Payment Acceptance at Barclaycard. Before that, he spent 10 years at Barclays in various Director roles and as Head of Corproate Payuments.
David Scola
(CPO & US Chief Executive)Prior to joining Form3 in 2022, David was the Head of North America/Chief Executive of America, UK and Ireland at SWIFT. He also spent nearly 7 years at Barclays as a Managing Director, Global head of Bank Coverage (Corp Banking) and Global Head of Financial Institutions (Barclays Corporate) and 7 years at Deutsche Bank as a Managing Director.
Benyam Hagos
(CFO)Prior to joining Form3 in 2023, Benyam was a VP, European Finance Director and COO of Europe and Middle East at Nium. He also served as the CFO at Ixaris and as a Director, UK Controller at Mastercard.
Mark Fieldhouse
(CRO)Prior to joining Form3 in 2025, Mark was a Strategic Advisor at GAINZ.AI and Future Resilience forum. He was also the VP and GM, Americas and EMEA at Rescale and GM, EMEA at NS1.
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