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Design, develop, and maintain scalable backend systems and REST APIs to power fintech products. Focus on greenfield development and improving systems for card payments, treasury management, and crypto liquidity.
Requires a Bachelor's degree in Computer Science or a related field and demonstrable fluency in Java backend development. Candidates should have a track record of building complex products for hypergrowth startups and possess strong English communication skills.
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.
As a Backend Engineer, you’ll design, develop, and maintain scalable, secure, and high-performing backend systems that power our innovative products. You’ll collaborate with a talented team to create solutions that drive financial inclusion and transform the way people manage their money.
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
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
Competitive salary and benefits
Stock options, so you own part of what you build
Discretionary performance bonus
The latest tools and technology
A world-class team that will challenge and grow your skills
The opportunity to help build the best fintech app in Latin America
Office Policy: 3-4 days a week in-office
Financial leadership for ambitious tech and innovation businesses
Financial leadership for ambitious tech and innovation businesses. Outsourced finance support that gives founders clarity, control, and confidence as they grow. We take ownership of your finance function and turn your numbers into insight that supports better decisions. You get senior-level financial leadership without the cost or complexity of building a full in-house team. Clear visibility. Strong cashflow control. Finance that supports growth.
Offices: Lancaster, GB
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