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Senior Software Engineer (Java)

Join ARQ as a Senior Software Engineer to design and develop backend systems for a fast-growing fintech company.

Location
Krakow
Compensation
Not disclosed
Level
senior
Type
full time · Hybrid

Posted by employer 4 days ago

First seen on Joblaze 2 days ago

Last verified on the company career page 13 hours ago

Apply at ARQ → Save job Scanned from arqfinance.com

Skills & Technologies

What you'll build

  • Design and develop scalable backend systems
  • Build REST APIs
  • Engineer microservices
  • Improve existing systems
  • Collaborate with a talented team

Must have

  • Demonstrable experience in Backend development
  • Fluency in Java
  • Bachelor's Degree in Computer Science or related field
  • Excellent communication skills

Nice to have

  • Track record of building complex products
  • Experience in hypergrowth startups

Practical constraints

  • 3-4 days a week in-office

Requirements

Education
Bachelor's degree

Not disclosed in this posting: compensation, years of experience, visa sponsorship.

Benefits

Competitive salary and benefits Latest tools and technology Discretionary performance bonus World-class team Stock Options

Joblaze summary

In this role, the Senior Software Engineer focuses on designing and enhancing backend systems that support ARQ's fintech products, including building REST APIs and microservices. Proficiency in Java, along with experience in clean code practices and agile methodologies, is essential for success. This position is ideal for someone with a strong background in backend development, particularly in high-growth environments, who is eager to tackle complex challenges. ARQ's early-stage growth offers a collaborative atmosphere where each team member can significantly influence the company's trajectory.

Joblaze insights

  • Listed 2 days ago — first seen on Joblaze September 23, 2026. Last confirmed on ARQ's careers page September 25, 2026.
  • This exact title is also open at 2 other locations at ARQ: Krakow, New York.

Quick facts

Is the Senior Software Engineer (Java) role remote?
It's hybrid — ARQ expects some on-site time in Krakow.
Where is the role based?
ARQ is hiring for this position in Krakow.
What's the tech stack?
Joblaze extracted these technologies from the posting: Java, PostgreSQL, Spring Boot.
What seniority level is this role?
ARQ targets senior candidates for this position.
Is this full-time or contract?
Full-time for this Senior Software Engineer (Java) role at ARQ.

From the original posting

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

  • Discretionary performance bonus

  • The latest tools and technology

  • Office Policy: 3-4 days a week in-office

Standard company text repeated across ARQ's postings is omitted here.