Europe Arbeitnow ·
full-timeSenior Software Engineer | Platform
Arq · London
Arq is a fintech company focused on building global infrastructure to facilitate seamless cross-border financial transactions. As a Senior Software Engineer within the Platform team, you will be responsible for architecting and maintaining the underlying infrastructure that supports the company's high-growth financial services. Your day-to-day work will involve designing secure, highly-available systems, developing shared infrastructure-as-code libraries, and building CLI tools that empower product engineers to deploy services rapidly. You will manage complex Kubernetes clusters, optimize CI/CD pipelines, and implement GitOps workflows to ensure declarative application deployments. This role requires a strong background in distributed systems and a commitment to writing type-safe, testable code rather than just managing configuration. The position is well-suited for a pragmatic engineer who possesses a deep understanding of modern infrastructure stacks, including Kubernetes and cloud-native monitoring tools like Datadog and Prometheus. You should be comfortable operating in a high-compliance environment and have the technical depth to troubleshoot complex infrastructure issues while collaborating closely with cross-functional teams to drive architectural improvements.
About ARQ ARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journey, which means every person who joins shapes the future of our product, culture, and growth. If you’re excited by big challenges, global impact, and the chance to grow fast with a world-class team, ARQ is the place to do it. What we're looking for We’re looking for a world-class, hands-on Senior Software Engineer to join our Platform team who takes a software engineer’s approach to architecting and building engineering infrastructure. Our engineering culture is focused on fully type-safe, declarative & testable infrastructure as code and we’re looking for like-minded engineers who also value these properties to join us. The ideal candidate will have a raw passion for programming, a broad knowledge base and the ability to dig deeply into any technical area required to enable our product engineering team to deliver the best product on the market for managing modern finances. We architect extreme-quality, automated systems to orchestrate hundreds of backend services & databases across tens of kubernetes clusters, tens of thousands of data processing jobs and tens of thousands of CI/CD builds per week - if that excites you, we want to talk to you. What you'll be doing The design and implementation of the secure, highly-available infrastructure layer that powers a modern, high-growth, financial services company. Ensure our product engineering organisation can spin up new infrastructure in an unimpeded and rapid manner, through the careful design and implementation of shared IaC libraries, cli tools and codebase patterns. Problem-solve, analyse and debug infrastructure issues & opportunities with members of the wider engineering team. Strategise & execute on the rollout techniques for making sweeping infrastructure changes as we constantly integrate new best practices & security improvements into our setup. Orchestrate multi-region infrastructure and deployments to meet security, availability and compliance requirements. Build, maintain & optimise high-volume CI infrastructure, along with reusable pipeline templates suitable for a microservices architecture. Implement GitOps workflows for declarative application deployments. Improve application monitoring and alerting with Datadog, Prometheus, and Grafana. What you'll need Required Experience Software Engineering Foundation: Strong background in full-cycle software development. You should be as comfortable building a customer-facing API as you are provisioning a Kubernetes cluster. System Design: Experience driving the architecture and implementation of large-scale, distributed production systems. Strong Programming Skills: Fluent in at least one modern typed language (e.g., TypeScript, Go, Rust, or Java). We write code, not just config. Modern Infrastructure Stack : Hands-on experience with Kubernetes, CI/CD, and sophisticated IaC (Pulumi, Terraform, or CDK). Security Mindset: Deep understanding of modern cyber-security attack vectors and how to bake "secure-by-default" patterns into the platform. Nice to Have TypeScript Fluency: Experience with TypeScript and systems to ensure infrastructure safety. Fintech Expertise: Experience working within regulated environments or high-compliance industries. Data Infrastructure: Familiarity with scaling data engineering pipelines and distributed databases. GitOps: Experience with ArgoCD or Flux for declarative, state-driven deployments. What We Value Systems thinking - understanding how distributed systems work end-to-end Problem-solving - methodical debugging of complex infrastructure issues Collaboration - working with engineering teams to understand their needs Documentation - clear runbooks, technical documentation, and knowledge sharing Pragmatism - balancing technical excellence with practical delivery Benefits Competitive salary commensurate with experience Sign-on stock options bonus Discretionary performance bonus (stock options) Paid annual leave Own the platform that directly impacts customer experience Work with modern DevOps practices and cutting-edge technology Strong team focused on continuous learning and knowledge sharing Influence technical direction and architecture decisions Find more English Speaking Jobs in United Kingdom on Arbeitnow
| Role | Senior Software Engineer | Platform |
|---|---|
| Company | Arq |
| Location | London |
| Type | full-time |
| Compensation | Not disclosed |
| Deadline | Rolling |
Typical process for this type of role
A general guide — the exact steps for this specific listing may vary; check the original posting for details.
- 1ApplicationSubmit your resume through the apply link.
- 2ScreeningRecruiter reviews your background against the role.
- 3AssessmentA technical test, assignment, or coding round, depending on the role.
- 4Interview(s)One or more rounds with the hiring team.
- 5OfferOffer letter with compensation and start date.
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