Ciklum is looking for a Senior Java Engineer to join our team full-time in the Czech Republic. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Senior Java Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Seeking a developer to lead the test-driven migration of a legacy Java EE application to a modern Spring Boot architecture, including transformation from MySQL to MongoDB. Responsibilities: - Analyze existing Java EE components and document business logic - Design clean, testable Spring Boot services and data access interfaces - Plan and execute MySQL to MongoDB data model transformation - Write unit/integration tests prior to implementation - Execute incremental migration with parallel validation - Ensure performance parity with legacy application Requirements: - Java/Spring Boot - Strong experience building enterprise applications, REST APIs, and data access layers with Spring Data - Jakarta EE/Java EE - Ability to analyze and deconstruct legacy Java EE components (EJBs, JPA, CDI) - MySQL - Deep understanding of relational data models and query optimization - MongoDB - Experience with NoSQL patterns, document modeling, and Spring Data MongoDB - TDD/Unit Testing - Proven track record writing comprehensive test suites before implementation (JUnit, Mockito, Testcontainers) Desirable: - Python - For scripting, automation, and migration tooling - LLM/AI Tools - Experience leveraging AI for code analysis, conversion assistance, and documentation generation - Kafka - Understanding of event-driven architectures for data synchronization - Docker/Kubernetes - Familiarity with containerized deployments What`s in it for you? - Strong community: Work alongside top professionals in a friendly, open-door environment - Growth focus: Take on large-scale projects with a global impact and expand your expertise - Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications - Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies - Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations - Flexibility: Balance office and remote work to fit your rhythm - Our Offices in the Czech Republic: We have three offices in Prague, Hradec Králové, and Zlín. There are no fixed office days—it all depends on your team’s agreement. - Here, you’ll find a relaxed and friendly atmosphere that fosters collaboration and innovation About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Prague, Hradec Králové, and Zlín, our Czech team delivers end-to-end solutions across industries. Here, innovation thrives through collaboration, and every idea drives our partners' success. Want to learn more about us? Follow us on Instagram, Facebook, LinkedIn, stop by one of our IT meetups Nalejvárna. Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

• Design, build, and improve CI/CD pipelines for applications and infrastructure • Develop automation frameworks that reduce manual effort and increase consistency. • Configure and optimize cloud infrastructure to align with security, scalability, and performance best practices. • Collaborate with development teams to remove deployment blockers and improve delivery workflows. • Monitor reliability and performance, identify issues early, and implement data-driven improvements to increase uptime and efficiency. • Participate in on-call rotations and drive incident resolution with clear postmortems and preventive actions. • Maintain technical documentation for pipelines, configurations, and runbooks. • Perform readiness assessments and validation tests before production rollouts. • Implement Infrastructure as Code using Terraform and ARM templates with version control and reproducibility. • Troubleshoot complex deployment, provisioning, and performance issues across multicloud and containerized environments.

Are you ready to bridge the gap between code and production at scale? We are looking for a DevOps Engineer (Expert) to join our team in Finland. In this role, you will help configure, transform, operate, and automate Telia’s Fixed, IP, Mobile Core, and RAN (B2X) network monitoring and automation solutions, ensuring performance, resilience, and high observability across our critical platforms. What you’ll do: You will design, develop, and evolve network monitoring and automation systems that support Telia’s large-scale telecom operations. - Design, configure, develop, and improve Telia’s network monitoring and automation platforms in line with business requirements - Deliver defined features by selecting and implementing the most suitable technical approaches - Collaborate with vendors and internal teams on platform evolution, upgrades, migrations, and consolidation - Drive automation and transformation by converting manual workflows into scalable, automated processes What will help you thrive in this role: You are proactive, self-driven, and comfortable taking ownership in complex environments. You solve root causes rather than symptoms, collaborate effectively across teams, and understand that secure and well-tested solutions are essential. - University degree in IT Systems Development, Operations, Telecommunications, or related field - Relevant experience in DevOps, systems integration, IT, or network operations - Hands-on experience with Linux, Unix shell scripting, VMware, Kubernetes, and Ansible - Experience with monitoring and observability tools such as Prometheus, Grafana, or ELK Stack - Good understanding of IP networking (TCP/IP, DNS, VPNs, etc.) - Foundational SQL knowledge (Oracle, PostgreSQL, etc.) - Experience with software development (Java, C/C++, Python, Perl, or similar) - Full professional proficiency in English Understanding mobile or fixed networks is considered an advantage. Join us to shape smarter living for people, businesses, and the planet At Telia, we’re a team of 15 000 colleagues across the Nordics and Baltics, passionate about technology and connectivity. As a Leading Telecommunications Operator & Climate Leader, we drive change with large-scale, impactful projects while building a sustainable, inclusive world. Here, you can grow your skills, lead meaningful projects, and thrive in a supportive, diverse environment. Whether you’re taking your first step or your next, Telia is a place to grow, belong, and make a real impact. What we offer When you join us, you'll receive a comprehensive benefits package tailored to your local market, opportunities for remote work, and more. You'll also have the chance to earn a bonus based on your performance and Telia's results. For Lithuanian applicants monthly salary range for this position - from 4300 Eur to 6400 Eur (gross) + annual performance bonuses. Although it may vary depending on your skills and experience. Ready to make better happen? We look forward to receiving your application by 2026-04-26. Please note that we might close the position earlier if we find the right candidate, so don’t wait too long to apply! If you’re selected for the next stage, you’ll be contacted by our Hiring Manager/Talent Acquisition Partner. Background and reference checks will be part of the process. Equal opportunities At Telia, we recognize talent by professional skills and growth potential. We champion diversity, ensuring every individual’s needs are met, regardless of disability, gender, age, nationality, sexual orientation, or social status. Together, we’re dedicated to fostering an inclusive work environment where your uniqueness is our strength. Join us and let’s make better happen - together!

Company Description Ranked as Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries. DT-ITS recieved the Best in Educational Cooperation award from HIPA in 2019, acknowledged as the the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team. Job Description Your Department Step into the engine room of Europe’s public cloud! At T Cloud Public, we don’t just operate a platform — we shape the future of secure, scalable, open-source cloud technology. Powered by agile ways of working, lean structures, and a passionate, high-performance team, we thrive in one of the most dynamic environments in the industry. If you’re a cloud enthusiast and a hands-on professional ready to tackle complex challenges, you’ll feel right at home with us. Why you will love working here? - Advance your career on a major European cloud platform — gain hands-on experience with cutting-edge, hyper-scale cloud technologies that will strengthen your skills and make you a sought-after cloud expert. - Turn ideas into action with a vibrant, international team — collaborate with colleagues who thrive on creativity, excellence, and delivering customer satisfaction. The challenges You’ll tackle? - Take on big operational challenges in our hyperscale cloud backend - owning everything from hands-on change implementation to deep problem investigation and proactive fixes that kill repetitive tasks before they spread. - Jump straight from insights to action by working directly at the console and getting up close with the hardware and tech that power our platform. - Turn your operational know-how into real impact by joining project rollouts and helping launch new features that evolve our cloud. - Automate wherever possible with modern frameworks, because smart workflows beat manual work every time. - Thrive in a high-trust expert team that shares openly, supports each other, and solves big problems together. Qualifications Your superpowers: - 2–5 years of hands-on IT experience with modern cloud technologies — you’ve been in the trenches and know how to make a cloud run smoothly. - Experience as a DevOps engineer or in a similar software engineering role. Strong experience in Linux and container-technologies. Proficiency with Git and GitHub workflows Good knowledge of Python and Go. Extensive knowledge in infrastructure automation. Knowledge of agile development processes. High level of customer focus. Problem-solving attitude. Collaborative team spirit. Fluency in written and spoken English. You will be working in the European Union to meet our customers' data security and privacy requirements. Personality: Motivated Additional Information Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation. * Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation. - Company: Deutsche Telekom TSI Hungary Kft.