Lead Software Engineer (Java)
- Level
- Lead
- Work type
- Hybrid · Krakow
Not stated in the posting: salary, visa.
Open. First seen 5 October 2026.
About the role
ARQ's standard text
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
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
What this role asks for
77% of this description is written for the role. The rest is ARQ's standard text, folded away below.
Read against ARQ's other open postings on this site.
The team: Engineering HIRES STEADILY
This role is one of 10 open in Engineering. 7 were posted in the last 30 days and the oldest in July: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Java (9 of 10), Microservices (9 of 10), PostgreSQL (9 of 10), REST (9 of 10), Spring (9 of 10)
OTHER ROLES ON THIS TEAM
- Lead Software Engineer(Java) posted Oct 5
- Senior Software Engineer (Java) posted Oct 5
- Senior Software Engineer (Java) posted Oct 5
- Software Engineer (Java) posted Oct 5
- Software Engineer (Java) posted Oct 5
- Senior iOS Engineer posted Sep 22
- Software Engineer (Java Backend) posted Sep 10
- Senior Software Engineer (Java) posted Jul 15
- Lead Software Engineer (Java) posted Jul 15
From the team and dates on ARQ's own job board.
Other openings for this role
2 postings for this role in Krakow since 21 September 2026, 1 still open. None has been taken down and posted again.
- 5 October 2026 – open (this posting)
- 21 September 2026 – closed 5 October 2026
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