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Senior Full Stack Developer (Java)

Wroclaw, Krakow, Gdansk, Warsaw, Poland

We are seeking a Senior Full Stack Engineer to join our development team, focusing on building robust Java-based enterprise applications while heavily leveraging Agentic AI tools to drive efficiency and innovation.

In this role, you will be responsible for the end-to-end software development lifecycle, from backend services and database optimization to user-friendly frontend interfaces and secure CI/CD pipelines. A crucial aspect of this position is the daily, hands-on integration of AI-powered development tools to accelerate coding, code review, and problem-solving.

Tech Stack: Java, Spring Boot, Spring Security, Hibernate ORM, SQL (MySQL/PostgreSQL/Oracle), JavaScript (React/Angular/Vue.js), Jenkins, Docker, Kubernetes, RESTful APIs, Agentic AI (GitHub Copilot, ChatGPT, Claude, Cline)

Essential functions

  • Design, develop, and maintain full-stack applications using Java and modern web technologies.

  • Integrate Agentic AI tools (like GitHub Copilot, ChatGPT, Claude, and Cline) into daily development workflows to accelerate coding, code reviews, testing, and documentation.

  • Design, build, and maintain Jenkins CI/CD pipelines to optimize automated builds, tests, and deployments.

  • Implement robust cryptographic solutions and security protocols to protect sensitive data.

  • Write comprehensive unit and integration tests using JUnit, Mockito, and Cucumber to ensure high reliability.

  • Share best practices for AI tool usage across the team and continuously evaluate emerging Agentic AI technologies.

  • Debug complex technical issues, participate in code reviews, and collaborate closely with product, design, and QA partners within an Agile/Scrum framework.

Qualifications

  • COMMERCIAL EXPERIENCE WITH AI TOOLS IS OBLIGATORY: You must have proven, commercial experience using AI-powered development tools (e.g., GitHub Copilot, ChatGPT, Claude, Cline) to accelerate software delivery.

  • 5+ years of hands-on software development experience with Java.

  • Strong proficiency in Spring Boot, Spring Security, and Hibernate/JPA.

  • Solid experience with frontend technologies (HTML5, CSS3, JavaScript, and frameworks like React, Angular, or Vue.js).

  • Strong, hands-on experience designing and maintaining Jenkins CI/CD pipelines.

  • Solid understanding of cryptography (encryption/decryption, digital signatures, and secure key management).

  • Experience with containerization (Docker, Kubernetes) and designing RESTful web services.

  • Strong background in automated testing (JUnit, Mockito).

Would be a plus

  • 2+ years of experience in payment processing, fintech, or financial services.

  • Knowledge of payment protocols (ISO 8583, EMV), PCI DSS compliance, and financial regulations.

  • Experience with HSMs (Hardware Security Modules) and payment-industry cryptographic standards.

  • Experience with microservices, distributed systems, and cloud platforms (AWS, Azure, or GCP).

  • Knowledge of Android or iOS app development.

  • Contributions to open-source projects or active technical blogging.

We offer

  • Opportunity to work on bleeding-edge projects
  • Work with a highly motivated and dedicated team
  • Competitive salary
  • Flexible schedule
  • Benefits package - medical insurance, sports
  • Corporate social events
  • Professional development opportunities
  • Well-equipped office

About us

Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.

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    Grid Dynamics is an equal opportunity employer. We are committed to creating an inclusive environment for all employees during their employment and for all candidates during the application process.

    All qualified applicants will receive consideration for employment without regard to, and will not be discriminated against based on, age, race, gender, color, religion, national origin, sexual orientation, gender identity, veteran status, disability or any other protected category. All employment is decided on the basis of qualifications, merit, and business need.