Full Stack Software Engineer

Posted Yesterday
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Kraków, Małopolskie, POL
Hybrid
Mid level
Fintech • Payments • Financial Services
The Role
As a Full Stack Software Engineer, you will develop backend services in Java and Spring Boot, support frontend interfaces in TypeScript and React, collaborate across teams, and ensure code quality through reviews and automation.
Summary Generated by Built In
Description

Papaya Global is a rapidly growing, award-winning B2B tech unicorn with an ambitious mission to revolutionize the payroll & payments industry. With over $400M raised from multiple tier-one investors, our innovative technology provides a comprehensive solution for managing global workforces, encompassing everything from hiring and onboarding to managing and paying employees in over 160 countries.

We are looking for a Full Stack Software Engineer to join our team in Krakow or remotely from anywhere in Poland. 

Our Financial Compliance engineering team sits at the heart of that: we connect external systems, enforce data integrity, and expose reliable APIs that the rest of the platform depends on. The work is technically demanding - distributed systems, relational data at scale, strict correctness requirements - and deeply collaborative. We're a small team, we share knowledge openly, and nobody gets left alone on hard problems. 

You Will: 

  • Build and maintain backend services in Java/Spring Boot - APIs, integrations with external systems, data processing and storage in relational databases 
  • Work with AWS services (S3, SQS, SES) as an integral part of building and connecting systems — infrastructure changes affect your work directly, and you'll need to understand what's under the hood. 
  • Contribute to frontend interfaces in TypeScript/React (roughly 20% of your time) 
  • Take part in technical and architectural discussions - your opinion matters, and you'll grow into bigger decisions over time 
  • Write clean, well-tested code and care about it staying that way through code reviews and pair programming 
  • Own observability of your services - we catch bugs from charts before users notice them, and we're proud of that 
  • Work closely with Product, DevOps, and other engineering teams to deliver end-to-end features 
  • Work in Scrum with a team that uses it as an advantage 
Requirements
  • Your IDE is not an obstacle for you but an almost invisible tool – we expect fluency in IntelliJ or VSCode or (Neo)Vim 
  • You have solid production experience with backend systems in Java - Spring, HTTP APIs, and relational databases are core parts of your background 
  • You have working knowledge of frontend development in TypeScript and React, even if the majority of your time is spent on the backend 
  • You actively use AI-powered development tools (Claude Code, Cursor, Codex or similar) as a standard part of your development workflow. We push beyond the comfort zone here and expect the same from you 
  • You have working knowledge of AWS services - S3, SQS, SES 
  • You have experience with CI/CD pipelines and take test automation seriously 
  • You think about non-functional requirements - availability, reliability, security, observability 
  • You write clean, readable code and maintain that standard through code reviews 
  • Fluent written and spoken English 
Nice to have
  • Experience building AI-powered applications — we are moving towards developing internal expert systems driven by LLMs, and contributions in this area are welcome from day one. Familiarity with AWS Bedrock is a plus 
  • Comfort working in fast-moving product teams with short delivery cycles, real demos, and tight MVP timelines — this is part of how we build new products at Papaya Global 
  • Basic familiarity with Terragrunt or similar IaC tooling 

Skills Required

  • Solid production experience with backend systems in Java
  • Working knowledge of frontend development in TypeScript and React
  • Fluency in IntelliJ, VSCode or (Neo)Vim
  • Experience with AWS services (S3, SQS, SES)
  • Experience with CI/CD pipelines
  • Fluent written and spoken English
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The Company
Austin, , Texas
807 Employees
Year Founded: 2016

What We Do

Imagine controlling all your global payroll and payments from a single place, supported by certified experts who keep you compliant in every country, even when laws change. No more juggling third parties. No more foreign bank accounts. No more repetitive manual work. Finally, there’s one platform that gives you total control of your global operations, from creating local contracts automatically to paying workers in the local currency of 160+ countries. It’s called Papaya Global, and we’d love to show it to you. Papaya Global: How the world gets paid

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