Senior Software Engineer, Form3
Go, AI Resilience & Security Enhancements (Contract)
More information about location
Payment technology platform
Open for applications
Payment technology platform
201-500 employees
Open for applications
More information about 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
- All contractors start their first day in our office to collect the equipment needed to work remotely
- As a Senior Software Engineer, you will be engaged to deliver key initiatives that strengthen the security and resilience of Form3's cloud-native payments platform
- Working within a collaborative engineering environment, you will design, build, and implement capabilities that enhance the security, trust, and resilience of our systems while supporting the delivery of defined project outcomes
- This engagement is centred on hands-on software engineering and security-focused platform development
- You'll apply your expertise across areas such as API security, cryptographic controls, AI governance, software supply chain security, and automated security tooling to deliver production-ready solutions
- Working alongside engineers, platform specialists, and security experts, you'll focus on delivering scalable, maintainable capabilities that can be embedded into the software development lifecycle and provide lasting value beyond the engagement
- TECH STACK ⚙️
- 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
- INTERVIEW PROCESS ✍️
- Stage 1: Screening Call with Talent Team
- Stage 2: Take home test
- Stage 3: Technical 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’re hiring the right person!
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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