Senior/Expert Full Stack Software Engineer (Commercial Cards)

Quick Facts

• Role: Expert Full Stack Software Engineer (Commercial Cards)

• Collaboration: B2B contract (long-term)

• Work model: Hybrid (3 days/week in the office in Warsaw or Gdańsk)

• Language: English B1+/B2 or higher

Description

You will work on a microservices-based platform delivering secure, stable, production-ready features for commercial card solutions in the banking sector. The role covers end-to-end delivery—from requirements analysis and technical design through implementation, integrations, deployment, and production verification. You will also strengthen quality through automated testing, CI/CD, and application security remediation.

Responsibilities

• Lead feature delivery from business requirements to production verification

• Design, develop, and maintain applications and microservices using Java, Spring Boot, Angular, Kafka, and SQL

• Build and integrate REST APIs

• Develop automated tests and improve coverage (unit, integration, API, regression)

• Investigate and resolve production defects, incidents, integration issues, and performance bottlenecks

• Remediate SAST-detected vulnerabilities; scan containers and dependencies; support penetration testing and internet-facing security hardening

• Maintain and improve CI/CD and automation using Git, Bitbucket, Jenkins, Docker, and Kubernetes; prepare monitoring, logging, operational documentation, and deployment procedures

• Collaborate with Product Owners, analysts, architects, security specialists, operations, and engineering teams in Agile/Scrum (refinement, planning, estimation, reviews, retrospectives)

Requirements

• Experience building and maintaining applications in Java

• Experience developing applications with Angular

• Experience using Kafka in applications and integrations

• Experience building applications with Spring Boot

• Experience designing and developing microservices

• Experience building and maintaining REST APIs

• Experience with Angular Material

• Experience with SQL

• Experience with Kubernetes

• Experience remediating vulnerabilities detected by SAST

• Experience in the banking sector and/or cards and payments domain

• English B1+/B2 or higher

Benefits

• Private medical care

• Sports activities co-financing

• Formal support from documentation through onboarding