Software Engineer IV

HybridSalary not specified
Kraków, Poland

Job Description, Responsibilities & Requirements

About the Position

Software Engineer IV

Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere. Combining the best of debit, credit, and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest-free and with no late fees. Pretty great, right? We’ve already done big things since launching in the UK in 2020. In our first 24 months, we gained a huge 3 million customers. And just 14 months into our journey, we earned double-unicorn status – the fastest company in Europe to do so bragging-not-bragging. There are some exciting projects coming up and we’ve got big growth plans.

Zilch is searching for a talented Senior Java Software Engineer to join our dynamic and fast-paced team. We are looking to speak with coding enthusiasts who live and breathe software, and who obsess about quality. This role is a fantastic opportunity for Engineers who would like to get involved in building from the ground up, value innovation, and are natural problem solvers. If this sounds like you, we want to hear from you!

Responsibilities

  • Writing high-quality, hyper-performant, and well-structured code to support and extend the existing Zilch product.
  • Breaking down complex product features and back-end improvements into well-planned, detailed, deliverable tasks on a technical level.
  • Advising and guiding teams on Engineering best practices, solution design, and problem-solving.
  • Being responsible for system quality, monitoring, unit/integration testing, and advising on testing strategy improvements.
  • Working in an agile environment on user stories that deliver significant impact for our customers.
  • Building integrations and APIs that are rock-solid, secure, well-tested, and highly performant.
  • Continuous improvement of code, systems, processes, and knowledge.
  • Working with databases and data securely and efficiently.
  • Liaising with stakeholders to triage inbound bug reports, reproduce reported issues, and identify solutions.
  • Leading the team from a technical perspective and providing continuous support to junior staff.

Requirements

  • Demonstrated experience (preferably 7+ years) in Java Software Development, Spring Boot, building microservices, and robust interfaces, using SQL type databases such as MySQL or SQL Server and integrating with external services.
  • A bachelor and/or master’s degree in a technical field.
  • Team/Technical leadership experience.
  • Highly skilled in cloud architecture (AWS) and tooling.
  • Experience in cloud infrastructure, Infra as code (Terraform), and CI/CD.
  • Detail-oriented and committed to quality.
  • A positive, collaborative attitude and approach to development and testing.

Nice to Have

  • Exposure to NoSQL type databases (e.g., DynamoDB, MongoDB).
  • Knowledge of React, Angular, and TypeScript.
  • Experience with Docker and/or Kubernetes.
  • DevOps mindset.
  • Experience working on a B2C product.

We Offer

  • Competitive salary.
  • Stock Options (NSO).
  • Pension plan and life cover.
  • Private health and insurance.
  • Lots of room for career development, enhancement, and progression.
  • Occasional game nights and lots of social/team events.
  • Fully stocked kitchen with a selection of beverages and snacks.
  • Branded merchandise.

About the Company

Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere. Combining the best of debit, credit, and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest-free and with no late fees. Pretty great, right? We’ve already done big things since launching in the UK in 2020. In our first 24 months, we gained a huge 3 million customers. And just 14 months into our journey, we earned double-unicorn status – the fastest company in Europe to do so bragging-not-bragging. There are some exciting projects coming up and we’ve got big growth plans.

Job Details

Company name:
ITmatch
Location:
Kraków, Poland
Employment Type:
Contract
Work Mode:
Hybrid
Posted on TheJob:
Mar 25, 2026
Last checked:
Jun 29, 2026
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