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Backend Engineer - London

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

About the role

Backend Engineer role at ARQ in London (London / Remote in US) focused on designing, developing, and maintaining scalable, secure backend systems powering fintech products. Emphasis on greenfield work, REST APIs, microservices, and systems like card payments and treasury management.

Responsibilities

  • The work will focus on greenfield development and improvement of existing systems
  • Projects will include building REST APIs, engineering microservices and evolving a number of systems that our business depends on (e.g. card payments, treasury management, transactions booking, crypto liquidity)
  • Our technology stack is based predominantly on Java 25 on the backend with Postgres database
  • We rely on Spring Boot for quick and quality delivery
  • We have a pragmatic approach to develop our business logic, focusing on clean code, with emphasis on maintainability and fast turnaround with TDD, DDD and continuous integration & delivery

Qualifications

  • Demonstrable experience in Backend development, with fluency in Java
  • Bachelor's Degree (or above) in Computer Science, Mathematics, Physics, or other Engineering / Science disciplines
  • Quick learner with an ambitious and results driven personality, with excellent communication skills (english fluency, verbal and written)
  • Track record of building complex products that millions of people use in hypergrowth startups

Skills

Required:JavaPostgreSQLSpring Boot

Benefits

  • Competitive salary
  • Sign-on stock options bonus, so you become part of the success of the company
  • Discretionary performance bonus (stock options)
  • Paid annual leave
  • Own the development process that will face on the customer's impact
  • Latest technology to work with
  • Strong team that will help you improve your skills
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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