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Senior Software Engineer (Platform) -London

ARQ· Engineering
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Hybrid (London, United Kingdom)Full-timePosted 3mo ago

About the role

Senior/Lead Software Engineer (Platform) at ARQ, London or remote (US), focusing on secure, highly-available infrastructure and platform tooling to support a global fintech infrastructure.

Responsibilities

  • 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.

Qualifications

  • Strong background in full-cycle software development.
  • Experience driving the architecture and implementation of large-scale, distributed production systems.
  • Fluent in at least one modern typed language (e.g., TypeScript, Go, Rust, or Java).
  • Hands-on experience with Kubernetes, CI/CD, and sophisticated IaC (Pulumi, Terraform, or CDK).
  • Deep understanding of modern cyber-security attack vectors and how to bake 'secure-by-default' patterns into the platform.

Skills

Required:Software Engineering FoundationSystem DesignProgramming LanguageKubernetesCI/CD & IaCSecurity Mindset

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
Last updated Oct 25, 2026. Interested? Apply on the company site.
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About ARQ

The global financial platform for affluent consumers in the Americas.

ARQ opens the world’s strongest assets and markets to travelers, investors and professionals across the Americas—so they can spend, receive, send and grow their money wherever they are. Formerly known as DolarApp.

FintechCrypto / Web3
Company profileWebsite

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