Senior Java Developer (m/f/d) Identity & Access Platform

Job ID: 744000129113790

Senior Java Developer (m/f/d) Identity & Access Platform

Košice

Professional

Regular

Deutsche Telekom IT and Telecommunications Slovakia

Your Task

The Senior Java Developer is responsible for designing, developing, and maintaining complex software applications while independently managing all phases of the software development lifecycle. This includes analyzing requirements, creating technical solutions, implementing features, testing, and optimizing performance. The role requires strong technical expertise, ownership of delivered solutions, and the ability to ensure high code quality and architectural consistency.

The Senior Java Developer collaborates closely with Product Owners, Managers, and other technical team members to align development activities with business objectives and contributes to technical discussions and decision‑making processes. The position offers the opportunity to work with cutting-edge technologies in an agile environment that fosters innovation, scalability, and continuous improvement.

As part of the Login & Access Hub, you will provide a central authentication service for millions of external customers, enabling access to essential services such as TV, email, Customer Center, and OneApp. With over 70 million logins and 15 million unique active users daily, this functionality is critical to the customer experience. The team works every day to enhance and simplify the login experience while integrating innovative solutions like OneApp and OneShop.

Responsibilities

• Design, develop, and maintain software applications for strategic products
• Analyze requirements, prepare solution designs, and implement features
• Automate infrastructure and application deployments
• Monitor and optimize system performance to guarantee high availability and reliability
• Contribute to system testing and support fault analyses
• Develop and execute unit tests to ensure code quality and functionality
• Work in SCRUM team on developing and building complex application solutions for customer DTAG
• Implement customer's requirements based on specification in selected object-oriented programming language into functional and user-friendly application
• Provide testing of programmed functionality before deployment to avoid bugs and ensure quality of code
• Listen to user requests, consult with internal/external customers, project managers
• Mentor team members
• Take part in internal evaluation processes

Your Profile

We are seeking a highly skilled Senior Java Developer with extensive experience in software development, strong expertise in Java programming, Spring Boot, and modern development practices. The ideal candidate will have a Master's degree, at least 5 years of ICT systems engineering experience, and advanced knowledge of containerization, CI/CD pipelines, and database development. Strong communication skills, analytical thinking, and a passion for AI integration are essential.

Must Have Skills

• Master's degree in Information Technologies
• At least 5 years of experience in ICT Systems Engineering
• Expert-level programming skills with Java
• Strong knowledge of Spring Boot
• Strong knowledge of Hibernate
• Advanced knowledge of RESTful APIs
• Advanced knowledge of web services
• Advanced knowledge of containerization (Docker/Kubernetes)
• Advanced knowledge of CI/CD pipelines
• Advanced experience with database development (OracleDB, PostgreSQL)
• Skilled in working with Linux-based operating systems
• Strong general IT skills
• Excellent communication skills
• Strong analytical thinking abilities
• Strong team cooperation skills
• Mentoring capabilities
• Product management skills
• English language proficiency at upper-intermediate level (B2)
• Experience from a senior application development position
• Passion for AI and commitment to continuous learning
• Excitement to make AI a core part of daily work
• Ability to constantly explore innovative ways to implement AI and unlock its full potential

About Us

Our brand Deutsche Telekom IT Solutions Slovakia entered the life of Košice region in 2006 under the name of T-Systems Slovakia and ever since has been inextricably linked with the region when became one of the founding members of Košice IT Valley. We have managed to grow from scratch to the second largest employer in the eastern part of the country with more than 3900 employees. Our goal is to proactively find new ways to improve and continuously transform into the type of company providing innovative information and communication technology services.

Benefits

We believe in balance between work and personal life. An attractive and extensive work-life balance portfolio guarantees lasting motivation for employees and thus a better quality of life, promotes physical and mental well-being and contributes to a positive work environment.

We offer over 25 different benefits to improve personal and professional life in these areas:

• Financial benefits
• Benefits with focus on learning and development
• Benefits with focus on health and sport
• Benefits with focus on family and work-life balance
• Other benefits

For more information about our benefits: Benefits

Salary: Final salary is negotiable.

We are offering base salary depending on seniority level and previous experience of candidate. In addition to base salary we provide variable part and other financial benefits. Base salary will not be lower than €3,100/brutto.

Company Policies

• Remote working possibility is only available within Slovakia due to European taxation regulation

Job Benefits

Financial

• Base salary not lower than €3,100/brutto
• Variable compensation component
• Additional financial benefits

Work-Life Balance

• Attractive and extensive work-life balance portfolio
• Remote working possibility (within Slovakia)

Professional Development

• Benefits with focus on learning and development
• Mentoring opportunities

Lifestyle & Wellness

• Benefits with focus on health and sport
• Over 25 different benefits available

Family Support

Benefits with focus on family and work-life balance