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April 24, 2026
Fullstack / Integration Engineer
Senior • Hybrid
30,000 - 40,000 PLN
Warsaw, Poland
Fullstack / Integration Engineer
We are looking for an experienced engineer to support the development and evolution of internal platforms and integrations across key business areas such as HR, recruitment, and corporate operations. This role combines application development, systems integration, and platform improvement initiatives.
🔹 Key responsibilities
Build and maintain integrations between internal systems and external SaaS solutions
Develop and enhance internal applications and corporate-facing web platforms
Design APIs and data flows connecting various enterprise systems (HR, finance, recruitment)
Improve existing platforms in terms of performance, scalability, and maintainability
Work closely with business stakeholders to translate needs into technical solutions
Ensure system reliability through monitoring, alerting, and operational best practices
Support and optimize deployment processes and development workflows
Contribute to architectural decisions and technical standards
Share knowledge within the team and support less experienced colleagues
🔹 Requirements
5+ years of experience in software development and system integrations
Proficiency in at least one backend language - Java or Python
Familiarity with frontend technologies (JavaScript, HTML, CSS or frameworks)
Experience building and maintaining web applications (internal and/or external)
Strong knowledge of API design and integration with third-party services
Solid SQL skills and experience working with relational databases
Experience with version control (e.g. Git) and CI/CD practices
Ability to troubleshoot production systems and resolve issues effectively
Strong communication skills and ability to work with business stakeholders
🔹 Nice to have
Experience working with HR or recruitment systems and related SaaS platforms
Exposure to platform modernization or system transformation initiatives
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