Senior Java Engineer @ Winged IT
2 weeks ago
At least 6 years of experience with Java (version 17 and up); Framework knowledge: Spring Framework (Spring Boot, Spring MVC), Hibernate or JPA; Tools: Docker and CI/CD tools (e.g., Jenkins, GitLab); Databases: Strong SQL skills with hands-on experience in relational databases; Testing: Proficiency in unit testing (JUnit, Mockito) and integration testing tools; Cloud & DevOps: AWS cloud infrastructure and microservices architecture; System Design: Solid experience with microservices architecture, scalability, and system integration; Strong educational background in Computer Science, Information Technology, or a related field; Experience in driving complex projects from start to finish, guiding and mentoring teams; Experience in contributing to architectural design and system-wide decision-making with proven track record of both technical and organizational impact; Language proficiency: Advanced English (minimum B2 level). Nice to have: Others Java frameworks and Spring Security; Kubernetes and CI/CD best practices; NoSQL databases, PostgreSQL, and database performance tuning; Performance testing and automation frameworks experience; DevOps tools (Terraform, CDK) and monitoring tools (Prometheus, Datadog); Understanding of distributed systems, event-driven architecture (Kafka, RabbitMQ); Awareness of security best practices, API design (RESTful, GraphQL), and container orchestration tools. Do you want to play a key role in revolutionizing the future of finance? Join a global leader in deferred payments, with over 85 million active users and 2.5 million transactions processed daily As a pioneer in modern payment solutions, our client is developing innovative methods that streamline the shopping experience, enhance transaction security, and expand the availability of purchasing options. We're seeking individuals eager to achieve remarkable results and share their bold vision to redefine the future of payments and fintech. Send us your CV - we can’t wait to meet you Employer: Klarna Location: Warsaw (hybrid work: 2-3 days in the office) Rate: 170 - 195 PLN per hour Cooperation model: B2B or Employment Contract Start date: ASAP Duration: long-term agreement ,[To work within a key problem space, addressing the client's immediate needs by designing, developing, and deploying backend services that prioritize scalability, high availability, and low latency;, To collaborate and grow in a dynamic and autonomous environment while working in small, agile and cross functional teams;, To use the latest technologies to solve real problems for customers at a massive scale;, To be part of a team that will take full operational responsibility for the services that you own, and potentially take part in an on-call rotation;, To share your knowledge and build creative solutions while helping the team evolve best practices.] Requirements: Java, Spring, Docker, AWS, Spring Security, Kubernetes, NoSQL, PostgreSQL, Terraform, Prometheus, Datadog, Kafka, RabbitMQ, GraphQL, JUnit, Mockito, Jenkins, GitLab, Hibernate, CI/CD, REST Tools: Jenkins, Agile. Additionally: Small teams, International projects, Flat structure, In-house trainings, Modern office, Mobile phone, Startup atmosphere.
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Lead JavaScript Engineer @ Winged IT
2 weeks ago
Warsaw, Czech Republic Winged IT Full timeKafka Expertise: Demonstrate in-depth knowledge of Kafka, including its configuration, traffic management, and the production/consumption of topics; Node.js, TypeScript, and Jest Proficiency: Utilize deep understanding and hands-on experience with Node.js, TypeScript, and Jest for building and testing applications; Database Mastery: Showcase expert-level...
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Warsaw, Czech Republic Link Group Full time7+ years of professional experience in Java development Strong hands-on skills in Java, Spring Boot, Reactive programming (RxJava) Proven experience with Kafka in production systems Solid understanding of event-driven architecture and data serialization Practical experience with microservices, containerization, and cloud deployment (OpenShift /...
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Senior Software Engineer @ Bayer
7 days ago
Warsaw, Czech Republic Bayer Full timeBachelor’s degree in Computer Science, Software Engineering, IT, or related field. 5+ years as a software engineer. Proficiency in full-stack application development with Java, JavaScript and React Deep understanding of SDLC and methodologies (Agile, Scrum). Proficiency in software design and architecture. Experience with version control systems (Git)....
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Senior Software Engineer @ Square One Resources
2 weeks ago
Remote, Warsaw, Czech Republic Square One Resources Full time8+ years of professional software engineering experience with Java and enterprise systems. Proven experience leading or significantly contributing to modernization projects (e.g., monolith-to-modular/microservices, migration to cloud, refactoring legacy systems). Strong understanding of software architecture, design patterns, and system scalability....
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Warsaw, Czech Republic Box Inc. Full timeWho you are: 12+ years of professional software development experience with an understanding of best practices 6+ years experience as a Software Engineering Manager, with experience managing managers, leading teams owning high-scale production services Bachelor's/Master's degree or foreign equivalent in Computer Engineering, Computer Science, Electrical...
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Warsaw, Czech Republic Experis Polska Full timeRequired Skills and Experience 5+ years of experience in Java development (Java 17+, Maven, JUnit5). 1+ years of experience in Python and Ansible. Strong DevOps mindset with experience in GitLab CI/CD, SAST/DAST, and quality gates. Proficiency in Linux command-line environments. Familiarity with Docker, OpenShift, PostgreSQL; C++ exposure is a...
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Java Tech Lead @ Experis Polska
1 day ago
Warsaw, Czech Republic Experis Polska Full timeExperience: Minimum 5 years in IT development and architecture. Language: English (mandatory). Technical Skills: o Strong Java development background. o Knowledge of testing, architecture, security, and cybersecurity. o Familiarity with data management and digital culture. Behavioural Skills: o Collaboration and teamwork. o Results-driven, creative, and...
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Senior Data Engineer @ Bayer
2 weeks ago
Warsaw, Czech Republic Bayer Full timeBachelor’s degree in Computer Science, Data Science, Information Technology, or a related field. 5+ years of experience in data engineering, data operations, or a similar role, delivering production-grade data pipelines and services. Familiarity with data product lifecycle management across disciplines: Demonstrated expertise designing, implementing, and...
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Senior Azure Data Engineer @ Experis Polska
2 weeks ago
Warsaw, Czech Republic Experis Polska Full timeTech Stack Programming: Python, PySpark, SQL, SparkSQL, Bash Azure: Databricks, Data Factory, Delta Lake, Data Vault 2.0 CI/CD: Azure DevOps, GitHub, Jenkins Orchestration: Airflow, Azure Data Factory Databases: SQL Server, Oracle, PostgreSQL, Vertica Cloud: Azure (expert), AWS (intermediate) Tools: FastAPI, REST APIs, Docker, Unity Catalog Preferred...
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Senior Frontend Developer @ Link Group
5 days ago
Warsaw, Czech Republic Link Group Full time7+ years of experience in frontend development Strong hands-on experience with React (Hooks), TypeScript, RxJS, WebSockets, Webpack, and building SPA applications Practical experience with real-time UI communication, observables, and performance optimization Solid understanding of software design patterns and frontend best practices Ability to...
