Software Engineer (Java)

Uncover; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Competitive salary

Stock options

Discretionary performance bonus

Latest tools & technology

World-class team

Fintech app in LATAM

Job summary

ARQARQ is seeking a Backend Engineer to design, develop, and maintain scalable backend systems powering fintech products. You will work with a team to deliver high-performance services and secure architectures supporting everyday financial transactions.

Responsibilities include building REST APIs and microservices, with a Java 25 backend and PostgreSQL. Expect a pragmatic approach focusing on clean code, TDD, and CI/CD in a fast-growing startup.

Qualifications

• Demonstrable experience in backend development with Java.
• Bachelor's degree in CS, Math, Physics or an engineering/science field.
• Excellent communication skills in English (spoken and written).

Responsibilities

• Focus on greenfield development and improvement of existing systems.
• Build REST APIs and engineering microservices for scalable platforms.
• Evolve systems supporting card payments, treasury management, and transactions.

Skills

Backend development

Java

English fluency

Team collaboration

Education

Bachelor's degree in Computer Science or related

Tools

Spring Boot

PostgreSQL

REST APIs

Microservices

Job description

About ARQARQ

About ARQARQ 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

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.

What you’ll be doing

• 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

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