Fullstack Engineer, HR systems integration

For our client, an international financial company, we are looking for:

Full Stack Engineer, HR Enterprise Systems

Location: Warsaw, Poland (3 days in office per week)

Salary: 28 000 – 38 000 PLN gross / month (employment) Tasks:

Build and own integrations between enterprise systems and third-party HR SaaS platforms (70% backend, 30% frontend)

Lead end-to-end technical delivery of integration projects

• Design and implement robust RES
• Tful APIs and web service adapters that handle both modern REST and legacy SOAP interfaces
• Partner with HR, Talent Acquisition, Finance and other corporate teams to gather and manager requirementsAct as the cloud-native integration owner with security and compliance teams
• Implement and maintain CI/CD pipelines, automated tests and monitoring Requirements:5+ years of experience in software engineering (development & design)

Hands-on experience in SaaS HR software integration (preferably in-house)

Knowledge of one of major backend languages and also JavaScript or TypeScript (preferred stack: Java, Python, JS)

Proven experience designing and implementing RES

Tful APIs and integrating third-party web services

Experience with authentication and authorization standards (OAuth2, OIDC, SAML and SSO)

Experience building and operating services on a major cloud platform (AWS preferred)

Experience with Git, CI/CD and IaC (Terraform)

Some experience with frontend development

Some experience in gathering and managing requirements (liaising with stakeholders)

Fluent in English