Skip to content

Security Engineering

Senior Software Engineer (Go) - AI Resilience & Security Enhancements (Contract)

The full posting

THE PROJECT** ** 📝

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.

**WE’RE LOOKING FOR ** 🔍

  • 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

**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

**INTERVIEW PROCESS ** ✍️

Stage 1: Screening Call with Talent Team

**Stage 2: ** Take home test

**Stage 3: ** Code Review

**Stage 4: ** 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!

LOCATIONS📍

Here are the locations that we are looking to engage with contractors from. Please note, we are not looking to engage with contractors outside of these locations.

*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]" data-turn-id="request-WEB:1dabfb9c-a374-44fd-a4c3-ec9e54c5a0d7-3" data-turn-id-container="request-WEB:1dabfb9c-a374-44fd-a4c3-ec9e54c5a0d7-3" data-testid="conversation-turn-2" data-turn="assistant">

  • Austria
  • Bulgaria
  • Croatia
  • Cyprus
  • Estonia
  • Greece
  • Hungary
  • Italy
  • Latvia
  • Lithuania
  • Malta
  • Romania
  • Slovakia
  • Slovenia

All contractors start their first day in our office to collect the equipment needed to work remotely.

ABOUT FORM3 💭

Revolutionising the world of payments with our cutting-edge technology and innovative solutions. For more information about Form3, check out the following pages:

What we do | Life at Form3 | P ayments Cannot Fail Series | .Tech Podcast

OUR DEI&B COMMITMENT

We hire talented people from a variety of backgrounds and experiences and are committed to a work environment based on diversity, open-mindedness and curiosity. We’re united by our company values (we even created them together!) and we celebrate our unique differences.

Our employee lifecycle processes are designed to embrace equal opportunity and prevent discrimination against our people regardless of personal characteristics. It is our strong belief that the more inclusive and belonging we are as a business, the better our work will be.

As an inclusive employer, we guarantee to interview all neurodiverse and physically disabled applicants who meet the minimum criteria for this role. We also encourage candidates to notify us of any reasonable adjustments that may be required during the recruitment process. This includes providing job adverts in alternative, accessible formats or adjustments required at interview stage.

If you consider yourself to be neurodiverse or physically disabled under the UN definition of disability and would like to be considered under this scheme and/or require any reasonable adjustments please let us know by sending an email to careers@form3.tech clearly stating your consent for us to process this data.

For more information please refer to our Recruitment Data Policy .

Where you can be based

This position is 100% remote and open to applicants based in these 49 countries: Andorra, Albania, Austria, Åland Islands, Bosnia and Herzegovina, Belgium, Bulgaria, Switzerland, Cyprus, Czechia, Germany, Denmark, Estonia, Spain, Finland, Faroe Islands, France, United Kingdom, Guernsey, Gibraltar, Greece, Croatia, Hungary, Ireland, Isle of Man, Iceland, Italy, Jersey, Liechtenstein, Lithuania, Luxembourg, Latvia, Monaco, Moldova, Montenegro, North Macedonia, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Sweden, Slovenia, Slovakia, San Marino, Ukraine and Vatican City.

Text as Form3 published it; last compared with the original on 13 Nov 2026.

The application

Your details and CV, then 6 questions.

Keep these to handCVCover letter (optional)GitHub (optional)LinkedIn (optional)
  1. 1.
    Where are you currently located?Choose one (15 choices)
  2. 2.
    Do you currently have the legal right to work in the country/countries listed on the job ad without requiring current or future sponsorship from an employer?Yes or no
  3. 3.
    Please confirm you are willing and able to visit our London office, should you agree to join Form3?Yes or no
  4. 4.
    How many years of experience do you have writing application code in Go?Choose one: 0 years · 1 - 3 years · 4 - 6years · 7+ years
  5. 5.
    Are you able to speak and write fluently in English?Yes or no
  6. 6.
    Data NoticeChoose any: Confirm

Taken from Form3's application form as it stood on 13 Nov 2026.

The employer: Form3

Form3 runs account-to-account payment infrastructure for banks and fintechs; it seeks two contractors for an AI resilience and security programme, remote in Europe.

Pay and benefits: Contract engagements, not permanent hires, fully remote within Europe.

Other security roles worth a look

Let security teams come to you

Security teams sometimes ask us directly for someone with a given specialty, clearance or certification. Join the candidate pool once and we put you forward when a brief matches, and only after you say yes. No cost to you.

Create my profile

Hear first when Form3 posts a security role

We read Form3's careers system around the clock and send its new security roles in a weekly email, along with comparable openings at other employers. Free; leave whenever you like.