Senior Software Engineer (Java)

ARQ; Kraków; On-site; PLN 223,200 - 334,800; Full time

Benefits offered by this job

Competitive salary

Own the development process

Latest technology to work with

Strong team support for skill improvement

Job summary

ARQ, a leading fintech in Kraków, is looking for a Backend Engineer to design and maintain high-performing backend systems. You'll collaborate with a talented team to create solutions aimed at transforming financial interactions.

The ideal candidate has experience in backend development, particularly in Java, and holds a Bachelor's degree in a relevant field. Competitive salary and opportunity to work with the latest technology.

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.
• Excellent communication skills, both verbal and written, in English.

Responsibilities

• Focus on greenfield development and improvement of existing systems.
• Build REST APIs and engineer microservices for business-critical applications.
• Emphasize clean code, maintainability, and rapid development using TDD and DDD.

Skills

Backend development

Java

Fluency in English

Education

Bachelor's Degree in Computer Science, Mathematics, Physics, or Engineering

Tools

Java 25

Postgres

Spring Boot

Job description

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
• 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