Lead Java Developer

We are looking for an experienced and proactive Java Lead Developer in Warsaw to join and guide our engineering efforts in Warsaw. This role offers a unique opportunity to lead a technically strong team working on high-performance, scalable backend systems with a strong focus on security, reliability, and modern Java technologies.

You will be working in close collaboration with cross-functional teams (including distributed teams) on the design and implementation of core backend components, as well as taking a leadership role in technical decisions, mentoring, and delivery coordination.

This position requires hybrid model of work in Warsaw.

Essential functions:

Team & Technical Leadership (30%)

• Coordinate development efforts across local and remote teams.
• Provide technical direction, review architecture decisions, and ensure high engineering standards.
• Collaborate with stakeholders to understand business goals and translate them into technical solutions.
• Support team members with mentoring, code reviews, and resolving blockers.
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Hands-on Development (70%)

• Design, develop and maintain backend services and components.
• Take part in solution architecture, with a focus on scalability and performance.
• Contribute to continuous integration/deployment pipelines and containerized environments.
• Ensure quality, security, and maintainability of delivered solutions.

Tech stack you’ll be working with:

• Java 21, Spring Boot
• MySQL, Hazelcast, Kafka
• Thales payShield HSM, FutureX payment HSM
• Docker, Kubernetes, Helm

Qualifications:

• Proven experience (7+ years) in backend development with Java and Spring ecosystem.
• Experience in leading or mentoring engineering teams.
• Strong understanding of distributed systems, integration patterns, and microservices architecture.
• Familiarity with cloud-native environments and container orchestration (Docker/K8s).
• Experience with messaging systems (Kafka) and relational databases (MySQL).
• Previous exposure to payment or HSM-related technologies is a strong plus.
• Good communication and collaboration skills, with the ability to work across teams and time zones.

Would be a plus:

• Experience in fintech, payment systems or other high-security environments.
• Hands-on experience with Helm, CI/CD, or cloud platforms (AWS/GCP/Azure).
• Interest in performance tuning and high-throughput systems.

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.