Senior Software Engineer (Java)

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 are looking for a Backend Engineer to join our dynamic team. You will design, develop, and maintain scalable, secure, and high-performing backend systems that power our innovative products. You will collaborate with a talented team to create solutions that drive financial inclusion and transform the way people manage their money.

What You'll Be Doing

• Design and develop REST APIs
• Engineer microservices
• Evolve existing systems that our business depends on (e.g. card payments, treasury management, transactions booking, crypto liquidity)
• Work with a technology stack based predominantly on Java 25 on the backend with Postgres database
• Use Spring Boot for quick and quality delivery
• Focus on clean code, with an emphasis on maintainability and fast turnaround with TDD, DDD, and continuous integration & delivery

What You'll Need

• 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

Benefits

• 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