May 27, 2026

Senior Platform Engineer – Cloud-Native Java Ecosystems

Senior • Hybrid

20,160 - 23,520 PLN

Warsaw, Poland

Unleash innovation within high-availability ecosystems — shape the future of distributed Java architectures!

Warsaw-based opportunity with hybrid work model (up to 2 remote days per week)

As a Senior Platform Engineer, you will be working for our client, a leader in cutting-edge cloud-native solutions. You will play a vital role in developing and maintaining advanced developer tools within a sophisticated Java ecosystem, empowering scalable, resilient platforms that underpin major products like Allegro Pay and Allegro Care. Join a team committed to technological excellence and stay at the forefront of digital transformation.

Your main responsibilities:

  • Develop and sustain developer tools optimized for the latest Java 25 ecosystem, ensuring high performance and usability.
  • Provide expert support for cloud workload optimization and Kubernetes environment configuration, including Istio and Argo.
  • Design and implement high-availability solutions across multi-region architectures to guarantee seamless service delivery.
  • Conduct research on emerging technologies, lead Proof of Concept (PoC) initiatives, and produce detailed analytical reports.
  • Deliver advanced technical support to product teams, enhancing platform automation and integration efforts.
  • Collaborate on platform engineering tasks, supporting Azure-based services essential to key products.
  • Participate in code reviews, uphold high coding standards, and share your expertise within the team.
  • Leverage scripting languages such as PowerShell or Bash to streamline operational tasks.

You're ideal for this role if you have:

  • Minimum of 3 years of professional experience in backend development or platform engineering.
  • Deep knowledge of Java and Kotlin programming languages.
  • Hands-on experience with distributed systems and microservices architectures.
  • Strong expertise in containerization (Docker) and cloud services, especially Azure or similar platforms.
  • Familiarity with Kubernetes, GitOps tools such as Istio, ArgoCD, Helm, and multi-region deployment architectures.
  • Proficiency in scripting tools like PowerShell and Bash.
  • Excellent command of Polish and English — communicative level.

It is a strong plus if you have: (optional)

  • Experience with cloud computing solutions and services.
  • Knowledge of service mesh, automation processes, and platform toolchains.

Language Required for the role:
Polish and English — communicative level

Eligibility for the role:
Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

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Warsaw, Poland

17,850 - 22,680 PLN

🏢 Summary: Senior Java Developer role focused on building secure, scalable enterprise banking applications using modern Java and Spring technologies in a hybrid work model. The position involves developing high-performance REST APIs, managing databases, and supporting CI/CD pipelines within a complex enterprise environment. You will collaborate with cross-functional teams to deliver robust financial solutions. 🗂️ Requirements: 5+ years of Java development experience in enterprise environments, Strong expertise in Java and Spring Boot, Experience with JPA and REST API development, Proficiency with PostgreSQL and Oracle databases, Knowledge of security patterns and testing frameworks, Experience with CI/CD and containerization tools, Communicative proficiency in Polish, Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, JPA, REST, PostgreSQL, Oracle, JUnit, Mockito, OpenShift, Jenkins, GitLab, Maven, Liquibase, Postman, RabbitMQ, Kafka, MongoDB, Camunda, CICD 🏢 Description: Unleash innovation — drive the future of enterprise software development! Wroclaw/Poznań-based opportunity with hybrid work model (up to 4 remote days per week). As a Senior Java Developer , you will be working for our client, a leader in the banking sector dedicated to delivering cutting-edge financial solutions. You will help build robust, secure, and scalable enterprise applications that empower banking institutions and SME clients across Europe. Join us in shaping the digital transformation of financial services and advancing your career in a dynamic, innovative environment. Your main responsibilities: Develop and maintain high-performance Java applications using Spring Boot (preferably 21/25 versions) and Spring frameworks. Design, implement, and optimize REST APIs with security best practices. Collaborate closely with testers, analysts, and Product Owners to deliver seamless solutions. Manage databases including PostgreSQL, Oracle, and utilize JPA for persistence layer development. Use architectural tools such as Postman, Liquibase, Jenkins, Gitlab, Maven, and OpenShift to ensure continuous integration and delivery. Contribute to system security design, integrating technologies like Mockito, JUnit, RabbitMQ, Kafka, and MongoDB. Participate in code reviews, architectural discussions, and testing for quality assurance. Support deployment pipelines and collaborate with cross-functional teams to deliver excellence. You're ideal for this role if you have: 5+ years of experience in Java development within enterprise environments. Strong expertise in Java, Spring (preferably 21/25), JPA, and REST API development. Proficiency in database management, including PostgreSQL and Oracle. Solid knowledge of security patterns and testing frameworks such as JUnit and Mockito. Experience working with containerization and CI/CD tools like OpenShift, Jenkins, and Gitlab. Comfortable working in a collaborative environment with testers, analysts, and Product Owners. It is a strong plus if you have: (optional) Experience with RabbitMQ, Kafka, or MongoDB. Familiarity with Camunda BPM and banking industry solutions. Certifications or knowledge related to these technologies. Language Required for the role: Communicative proficiency in Polish. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data. We offer you At ITDS , you will work on innovative and impactful technology projects for international companies across multiple industries in Europe and beyond. We create an environment for ambitious, driven professionals who want to grow, deliver value, and build their careers in modern IT and digital transformation. Our offer includes: Stable and long-term cooperation with attractive conditions Opportunities to develop your technical expertise across various industries and technologies The chance to work on high-impact, strategic IT and digital transformation projects A clear career path and the opportunity to grow quickly by contributing to diverse client initiatives over time International environment , knowledge sharing, social events, and training opportunities Access to an attractive medical package Access to the Multisport program Access to learning platforms such as Pluralsight Flexible working hours and remote work options Internal number #8702

Technology

ITDS

Senior Java Spring Boot Backend Developer – Cloud and Microservices

Senior

Hybrid

Krakow, Poland

24,150 - 30,450 PLN

🏢 Summary: Senior Java Spring Boot Backend Developer role focused on building and modernizing a cloud-native Messaging Delivery Platform in the financial sector. The position involves designing and developing scalable microservices, APIs, and distributed systems deployed on Kubernetes and AWS. You will contribute to high-quality backend solutions within an Agile environment using modern DevOps and cloud practices. 🗂️ Requirements: Minimum 6 years of commercial experience in Java development, Strong hands-on experience with Spring Boot, Practical experience in microservices architecture, Experience with Kubernetes and AWS cloud environments, Proficiency with CI/CD tools: Jenkins, GitHub, Maven, Groovy, Strong knowledge of API design: Swagger, OpenAPI, REST, JSON, Experience with OAuth2 and API Gateway solutions such as Kong, Experience with unit testing and TDD practices, Knowledge of Agile methodologies, especially Scrum, Fluent English, Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, Microservices, Kubernetes, AWS, Jenkins, GitHub, Maven, Groovy, Swagger, OpenAPI, REST, JSON, OAuth2, Kong, Docker, CICD, TDD, Scrum 🏢 Description: Unleash innovation at scale — drive the future of cloud-native, microservices architectures! Krakow-based opportunity with hybrid work model (3 remote days per week). As a Senior Java Spring Boot Backend Developer , you will be working for our client in the financial industry, focusing on the Messaging Delivery Platform—centralizing and modernizing message delivery to bank customers across multiple channels. Join a cutting-edge project that shapes the future of client communication through advanced distributed systems and cloud technology. Your main responsibilities: Develop high-quality, scalable backend applications using Java and Spring Boot, ensuring adherence to technical requirements and standards. Collaborate within a multidisciplinary Agile team to design, build, and enhance distributed microservices architectures. Implement and monitor API solutions using Swagger, OpenAPI, REST, and JSON standards, ensuring best practices. Deploy and manage containerized applications on Kubernetes, leveraging AWS cloud infrastructure. Integrate authentication and authorization mechanisms such as OAuth 2 and API Gateway solutions. Write and execute unit tests, contribute to automation testing efforts, and uphold quality benchmarks. Participate in code reviews, challenge implementations to maintain highest quality standards, and promote innovation. Keep abreast of current technologies, tools, and industry best practices, continuously enhancing your expertise. Support and mentor team members to foster a culture of technical excellence and knowledge sharing. You're ideal for this role if you have: Minimum 6 years of experience in Java development within a senior or expert capacity. Strong hands-on expertise with Spring Boot framework and microservices architecture. Practical experience with Kubernetes and Cloud environments, particularly AWS. Proficiency with CI/CD tools such as Jenkins, GitHub, Maven, and Groovy scripting. Deep understanding of API design principles, including Swagger, OpenAPI 3.0, REST, and JSON. Familiarity with authentication protocols like OAuth 2 and API Gateway solutions such as Kong. Robust knowledge of Agile practices, especially TDD and Scrum methodologies. Ability to work fluently in English, with excellent communication skills. It is a strong plus if you have: Certifications or additional experience with AWS services. Knowledge of automation testing frameworks. Experience with messaging systems or middleware. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.