Lista ofert pracy

As a Senior Software Developer, you will:

• Contribute as a Sr. Individual Contributor within a team of top engineers using Agile methodology.
• Analyze, design, develop, test, and debug large and complex software enhancements and solutions within Charles River’s business and technical problem domains.
• Collaborate with Business Analysts and Product Managers to create simple and sustainable software solutions for complex problems.
• Direct problem solving for projects or major phases of ...

Desired Skills and Competencies:

• 4-8 years of experience in Java development, preferably in the FinTech (financial markets) area.
• B.S. degree (or foreign education equivalent) in Computer Science, Engineering, or other technical course of study required; MS degree strongly preferred.
• Experience in front-end web development, ideally using React.
• Experience in development of cloud-native services (Azure experience a bonus).
• Knowledge of SQL and experience with RDBMS.
• Experience ...

• Opracowuje architekturę systemów
• Wpływa na rozwój standardów wytwarzania oprogramowania w całej firmie
• Pracuje z klientem (w grę wchodzą delegacje)
• Pracuje z zespołem developerskim
• Doradza innym i wymienia się wiedzą
• Angażuje się w działania sprzedażowe - wspiera zespół Presales i Account Managerów

• Min. 6-letnie doświadczenie w pracy w IT, w tym min. rok doświadczenia w roli solutions architekta - must have
• Szeroka wiedza z zakresu Javy
• Wiedza związaną z architekturą aplikacji i systemów
• Znajomość języka angielskiego na poziomie min. B2
• Wysoki poziom świadomości biznesowej
• Wysoki poziom zdolności interpersonalnych, przywódczych i komunikacyjnych
• Otwartość na wyjazdy służbowe, delegacje do klienta
• Odwaga w podejmowaniu wyzwań, odpowiedzialność i ...

• Work with multiple development teams to raise engineering quality, standards, and ways of working.
• Focus on mentoring, setting standards, and shaping engineering practices with real, organization-level impact.
• Key focus areas include:
• Quality gates in Pull Request workflows
• Code review and testing standards
• Static code analysis (SonarQube)
• BDD adoption (Gherkin, Cucumber, JUnit)
• Mentoring and upskilling developers
• Engineering excellence mindset

Technical

• Strong Java background (architecture, best practices, code quality)
• Proven experience with PR-based workflows and quality gates
• Solid knowledge of SonarQube, test automation, CI/CD
• Nice to have: Vaadin, Integris
• Banking domain experience – plus

Methodology

• Proven experience mentoring and upskilling development teams
• Real-world BDD implementation in large environments
• Ability to work across multiple teams simultaneously

Language

• Fluent English
• German – ...

• Design and build Java (Spring / Spring Boot) services used across a large-scale banking ecosystem
• Work on systems processing high volumes of data, where performance, stability, and security really matter
• Take part in architectural discussions and influence technical decisions (it’s not just “implement and move on”)
• Develop and improve REST APIs and messaging-based integrations (Kafka, IBM MQ)
• Review code, raise the quality bar, and share good practices within the team
• Work ...

• 7 years of professional Java development experience (Java 8 and above)
• Solid understanding of object-oriented programming and design patterns
• Understanding of secure coding practices
• Hands-on experience with Spring, Spring Boot, and RESTful APIs
• Proficiency in version control systems (e.g. Git)
• Knowledge of unit testing frameworks (e.g. JUnit, Mockito)
• Experience with CI/CD tools and processes
• Understanding of containers (Kubernetes, Docker)
• Exposure to cloud platforms (AWS, ...

• Turn ideas into clean, maintainable, and cloud-ready applications.
• Build and evolve cloud-native applications using modern JavaScript/TypeScript tooling (typically React on the front end, Node.js services on the back end, and databases such as MongoDB or Postgres).
• Lead and support projects where clear UX and solid engineering matter.
• Collaborate closely with designers, product owners, and platform teams to ship features in small, reliable increments.
• Shape API contracts, improve code ...

• Strong hands-on experience with JavaScript and TypeScript.
• Proficiency with modern front-end frameworks, ideally React (hooks, state management, component design).
• Experience building back-end services with Node.js (REST and/or GraphQL APIs).
• Solid understanding of relational and/or document databases (e.g. Postgres, MongoDB), including schema design and query optimization.
• Familiarity with cloud-native application development on at least one major cloud (Azure, AWS, or GCP).
• ...

• Design and develop scalable, versioned GraphQL APIs and backend services.
• Own services end-to-end, from domain modeling and persistence to deployment and monitoring.
• Ensure high code quality through automated testing and code reviews.
• Improve performance and reliability of JVM-based applications.
• Implement and maintain security standards and best practices.
• Collaborate with Product, QA, and DevOps teams in an agile environment.
• Support team growth through mentoring and contribution...

• Strong experience with Java (11) and Spring Boot ecosystem.
• Hands-on experience with REST and GraphQL API design.
• Knowledge of SQL and NoSQL databases and messaging systems (e.g. Kafka, RabbitMQ).
• Experience with CI/CD pipelines and cloud platforms (AWS, Azure, or GCP).
• Familiarity with observability, testing, and security best practices.

• Uczestnictwo w projekcie z branży sprzedażowo-analitycznej.
• Współtworzenie nowoczesnych, skalowalnych rozwiązań backendowych oraz API wspierających rozwój inteligentnych aplikacji i narzędzi biznesowych.
• Projektowanie, rozwój i optymalizacja kluczowych usług backendowych, które realnie wpływają na wydajność i niezawodność systemu.
• Bliska współpraca z zespołem produktowym oraz liderami technologicznymi przy podejmowaniu decyzji architektonicznych.
• Aktywny udział w ...

• Co najmniej 6 lat doświadczenia w pracy jako Java Developer.
• Swobodne poruszanie się w świecie relacyjnych baz danych i SQL.
• Praktyczne doświadczenie w projektowaniu i implementacji RESTful API.
• Dobra znajomość środowiska Linux i umiejętność efektywnego korzystania z niego.
• Praca w metodykach Agile i cenienie sobie zwinnego podejścia do wytwarzania oprogramowania.
• Tworzenie czytelnego, skalowalnego i wielokrotnie używalnego kodu.
• Umiejętność działania samodzielnie, ...

• Contribute to a full life-cycle of the product (including problem discovery, prototyping, design, implementation, and measuring adoption)
• Build services with Java / Node.js (Express, Nest.js) on top of Kubernetes/AWS infrastructure
• Build developer-friendly RESTful APIs
• Design and connect to our persistence layer (PostgreSQL, ElasticSearch)
• Collaborate with other teams

• Proven experience in designing, developing, and operating distributed systems
• Experience in supporting end-to-end product lifecycle (from product discovery, solutioning, system design, implementation, production rollout, and optimization)
• While not strictly required, most of our Senior Engineers have 5 years of professional experience
• Deep command of the Java programming language
• Hands-on experience with TDD, clean code, clean architecture principles, and effective code reviews
• ...

• Design, build, and maintain efficient, reusable, and reliable code
• Suggest technical and functional improvements to add value to the product
• Conduct design and code reviews to deliver high quality product

Minimum Requirements

• At least 5 years of proficiency in JAVA or Kotlin technologies
• Deep experience with the Spring Framework
• Experience with NoSQL databases (one year at least)
• Knowledge of different communication protocols such as REST, gRPC, and GraphQL
• Very good spoken and written knowledge of English language (C1)
• BSc or MSc in Computer Science, Engineering or relevant field

Preferred Requirements

• Experience with Apache Kafka and its architecture for real-time data ...

• Develop user-facing Kontakt.io Apps
• Define data models and work with database systems like MongoDB and Postgres
• Establish connectivity with third-party systems using modern integration technologies like RESTful APIs, WSS Streams, Webhooks, and Kafka streams
• Build modular and reusable components and libraries
• Contribute to key architectural decisions that directly impact the scalability of Kontakt.io Apps
• Write and maintain documentation
• Write performance tests
• Support and ...

• 6 years of software engineering experience
• Hands-on experience in designing and developing highly scalable applications using modern technology stacks such as Java/Kotlin
• Strong Kafka experience
• Strong microservice architecture experience
• Knowledge of Spring frameworks
• Ability to naturally follow good development practices like test automation, CI/CD, source version control, etc.
• Experience with development for and deployment to AWS
• Good communication skills (English is a must) -...

• Hands-on backend development using Java and related technologies
• Mentor and support the professional growth of engineers
• Collaborate with Principal Engineers, Tech Leads, and the Head of Engineering
• Develop and maintain backend systems to high engineering standards
• Apply Test-Driven Development (TDD), Clean Code, SOLID principles, and GoF Design Patterns
• Design and review code architectures (Layered, Hexagonal), system architectures (Modular Monolith, Microservices), and APIs
• Work ...

• Min. 5 years of experience in backend software engineering
• Proven track record of delivering complex, large-scale software systems
• Strong knowledge of Java 17/21, Spring Boot 3.x, Maven, PostgreSQL, JPA/Hibernate
• Experience with AWS cloud services and containerization (Docker, Kubernetes)
• Intermediate experience in SRE/DevOps practices and tools
• Familiarity with CI/CD, system design, testing strategies, and deployment automation
• Excellent communication skills and ability to work ...

• Analyze, design, develop, test, and maintain a Java application for generating, storing, and distributing keys for radio authentication and air interface encryption within Motorola LMR systems.
• Collaborate with leading security experts to enhance the security of systems that protect public service officers and citizens.
• Take full ownership of the product's development at the R&D center in Krakow.

• 3 years of experience in Java software development.
• Solid understanding of client-server architecture.
• Working knowledge of REST API design.
• Commitment to engineering practices (e.g., TDD, Clean Code).
• Strong team player with good communication skills.
• Ability to lead technical initiatives and features.
• Engagement in complex problem-solving.
• Capability to define and maintain architecture collaboratively with the team.
• Communicative English, both verbal and written.
• Ability to...

• Develop backend services in Java (21) and Kotlin, applying best practices for scalability, resilience, and maintainability.
• Work directly with the SIP stack, gaining deep knowledge of call routing and handling protocols, and applying it in daily development and troubleshooting.
• Build and maintain automated CI/CD pipelines (as code) with fast, reliable deployments (complete test suit feedback in 20 min).
• Ensure high system reliability through synthetic 24/7 testing, observability, ...

• Strong experience with Java (preferably Java 21) and Spring Boot (3.x).
• Familiarity or interest in Kotlin.
• Experience with cloud environments (Azure, AWS) and containerized workloads (Kubernetes, Docker).
• Understanding of high availability architectures and reliability engineering.
• Knowledge of or willingness to learn the SIP protocol and apply it in daily work.
• Hands-on experience with observability tools (e.g., ELK, Prometheus, Grafana) and databases (Redis, MongoDB).
• Strong ...

• Participate actively in product design, development, and code reviews, primarily focusing on backend features with some front-end work.
• Contribute towards strategic initiatives and integrations with third-party billing and payment systems.
• Review team PRs, improve observability, and overall quality of code.
• Investigate and resolve issues within the billing ecosystem.
• Engage in retrospectives to continually improve processes.
• Collaborate with PMs and senior developers to understand ...

• 8 years developing large-scale applications.
• Proven experience as a Java Backend Developer with successful project implementations.
• Proficient in Java programming and server-side frameworks (e.g., Spring, Spring Boot).
• Frontend familiarity with HTML, CSS, and JavaScript (React preferred) to create and maintain essential UI components and support end-to-end functionality.
• Use Claude Code, Cursor, GitHub Copilot, Bugbot, or comparable tools as your primary development workflow.
• Work ...

• Collaboration with development squads in defining and refining quality criteria
• Preparation of structured test documentation and scenario coverage
• Creation and continuous enhancement of automated regression suites
• Transformation of manual verification processes into automated solutions
• Implementation of integration and end-to-end validation for backend services
• Verification of event flows and state transitions within event-sourced systems
• Execution of exploratory verification ...

• Proven experience in comprehensive test strategy development
• Strong background in automation framework architecture and optimization
• Solid understanding of Event-Driven Architecture and event sourcing patterns
• Practical knowledge of API validation and backend data verification
• Experience in quality assurance for distributed and microservices-based systems
• Familiarity with message-driven platforms, including Apache Kafka
• Knowledge of non-functional testing approaches (performance, ...