Lead Java Software Engineer

SoftServe; Polska; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Flexible work model

Health coverage

Learning opportunities

Job summary

SoftServe is seeking a Backend Engineer to join the European Commission’s eGrants ecosystem, building Java services, APIs, and business logic for calls, proposals, grants, and audits. You will contribute to security, performance, testing, CI/CD, and mentoring within a global team.

The role emphasizes Spring Boot, Hibernate, WebLogic, Kafka, and database design across SQL and NoSQL systems, plus OpenAPI, Docker, and Kubernetes.

Qualifications

• Experience with Java backend technologies and distributed systems.
• Strong knowledge of SQL databases and NoSQL databases.
• REST APIs and OpenAPI/Swagger proficiency.
• Experience with CI/CD pipelines and tooling.
• Familiarity with cloud services and container orchestration.

Responsibilities

• Design and develop backend applications using Java, Spring Boot, Hibernate, and related technologies.
• Build scalable services, APIs, and integrations; mentor team members.

Skills

Strong communication

Analytical

Team collaboration

Independent work

Tools

Spring Boot

Hibernate

WebLogic

Kafka

PostgreSQL

Oracle

MySQL

MongoDB

REST API/OpenAPI

Maven

GitLab

Bamboo

Jenkins

Nexus

Jira

Git

Bitbucket

wikis

Dynatrace

SonarQube

SonarLint

Fortify

OAuth 2.0/OpenID

JWT

Docker

Kubernetes

Camunda/Activiti

AI-assisted tools

Job description

Join the European Commission’s eGrants ecosystem as a Backend Engineer, developing business-critical solutions supporting calls, proposals, grants, participants, and audit processes.

You will build scalable Java services, APIs, integrations, and business logic while contributing to security, performance, testing, CI/CD, technical decisions, and mentoring.

RESPONSIBILITIES

• Design and develop backend applications using Java, Spring Boot, Hibernate, JEE, EJB, WebLogic, and Kafka
• Implement business logic and integrate frontend components with backend services
• Build and secure RESTful APIs and web services
• Design data solutions using relational and NoSQL databases
• Ensure application security, scalability, performance, logging, and monitoring
• Develop unit and integration tests using JUnit and Mockito
• Integrate testing and code quality controls into CI/CD pipelines
• Configure cloud services, storage, serverless functionality, and managed Kubernetes
• Troubleshoot complex issues using logs, data analysis, and APM tools
• Perform code reviews, mentoring, and technical onboarding
• Collaborate with QA teams and participate in requirements refinement and estimation
• Maintain clear technical documentation

REQUIREMENTS

• Strong experience with Spring Boot and Hibernate
• Hands-on experience with WebLogic, Kafka, JEE, and EJB
• Experience with PostgreSQL, Oracle, or MySQL, including complex SQL and database design
• Knowledge of MongoDB, CouchDB, or Cosmos DB, including consistency and performance trade-offs
• Strong REST API and web services experience, including OpenAPI/Swagger
• Experience with Maven, GitLab, Bamboo, Jenkins, and Nexus
• Experience with Jira, Git, Bitbucket, and wikis
• Experience with Dynatrace or similar APM tools
• Good knowledge of Agile and Scrum
• Experience with JUnit and Mockito
• Experience with SonarQube, SonarLint, Fortify, or similar code analysis/security tools
• Understanding of SOA, service buses, microservices, and distributed systems
• Knowledge of Docker and Kubernetes
• Knowledge of OAuth 2.0, OpenID Connect, and JWT
• Experience with cloud services, including serverless, storage, and managed Kubernetes
• Experience with AI-assisted coding tools such as Amazon Q or Kiro
• Strong troubleshooting, analytical, communication, and collaboration skills
• Ability to work independently and within international, multicultural teams
• Knowledge of public grants or audit management will be a strong advantage
• Experience with Camunda or Activiti will be a strong advantage
• Knowledge of European open-source/reusable components will be a plus
• Knowledge of system analysis and project management will be a plus

SoftServe is an equal opportunity employer. Qualified applicants will receive consideration regardless of race, color, ancestry, ethnicity, national origin, religion, sex, sexual orientation, gender identity or expression, age, citizenship, disability, health condition, marital or family status, veteran status, or any other characteristic protected by applicable law.

About us

We are a digital engineering and technology consulting company where expertise grows alongsidepeople. For more than 30years, we have been elevating technology: helping organizations navigate complex businesschallenges by combining deepengineering knowledge with thoughtful, research-backed innovation. Our teams work across keyareas: digitalengineering, data and analytics, Сloud, and AI/ML. In each, we deliver practical, scalablesolutions rooted in realbusiness needs and measurable human impact.

You bring your perspective and ambition. We create an environment where your work meetsclarity, confidence, andpurpose.

We offer

Flexible Work Model

Work from home, from the office, or in a hybrid format that supports focus andcollaboration.

Competitive, market-based pay, benchmarked by role andlocation — plus health coverage, paid time off, wellness support, and learningopportunities.

Approachable leaders who communicate openly, keep teams close to the strategy, andsupport long-term planning.

Advanced tech communities

Stay close to AI/ML, Cloud, Quantum Computing, IoT, andRobotics communities, with projects built on modern frameworks.

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