System Maintenance Specialist

🏢 Summary: Full-stack development role focused on building a modern underwriting solution using Angular and .NET, including scalable UI components, REST API integrations, and secure authentication. The position involves working with SQL Server, cloud-native deployment tools, and automated testing in an agile environment. 🗂️ Requirements: Strong experience with Angular and .NET, Experience building and consuming REST APIs, Solid knowledge of SQL Server and Entity Framework, Understanding of authentication mechanisms (Azure AD, MSAL), Hands-on experience with Docker and Kubernetes, Experience with CI/CD pipelines, Familiarity with unit and integration testing frameworks (Vitest, xUnit), Ability to develop scalable and maintainable solutions 📃 Skills: Angular, .NET, REST, SQL, SQLServer, EntityFramework, AzureAD, MSAL, Docker, Kubernetes, CICD, Vitest, xUnit, AzureDevOps 🏢 Description: Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! We are recruiting for our Client, who is developing a modern solution that streamlines the underwriting process through a contract repository, clause libraries, and AI‑supported wording creation tools. What you will do: Build full‑stack features using Angular (frontend) and .NET (backend) Create scalable UI components and integrate REST APIs Implement secure authentication flows with Azure AD / MSAL Work with SQL Server using Entity Framework Deploy services using Docker, Kubernetes, and CI/CD pipelines Write and maintain unit and integration tests (Vitest, xUnit) Participate in code reviews, agile ceremonies, and collaborate with cross‑functional teams Document work and track progress in Azure DevOps What we're looking for: Strong experience in software development with Angular, .NET, and REST APIs Solid understanding of SQL Server, Entity Framework, and authentication mechanisms Hands‑on experience with Docker, Kubernetes, and CI/CD Familiarity with testing frameworks (Vitest, xUnit) and agile practices Ability to work in a collaborative environment and deliver scalable, maintainable solutions Perks and benefits: Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers. Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location. Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more. Global collaboration - work with a diverse, international team. Innovative environment - be part of a forward-thinking and growth-oriented workplace. Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work. Team-building events including our company tradition (annual company event in Mazury). A pleasant surprise to start your journey with us in the form of a welcome pack.

🏢 Summary: The offer is for a Change Management Consultant responsible for driving adoption of new tools and processes by translating complex technical initiatives into clear, business-focused communication. The role involves stakeholder analysis, engagement campaigns, training enablement, and tracking adoption metrics. The consultant collaborates cross-functionally to ensure successful implementation of technology-driven changes. 🗂️ Requirements: Experience with change-management frameworks, Ability to translate technical concepts into business language, Experience collaborating with program and product teams, Strong stakeholder analysis skills, Ability to create training materials and workshops, Experience defining KPIs and tracking adoption metrics, Ability to quickly learn new software and technologies 📃 Skills: ChangeManagement, StakeholderAnalysis, KPI, Communication, Training, Workshops, Teams, Slack, Architecture, AdoptionMetrics 🏢 Description: Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! We are seeking a Change Management Consultant who will partner with Program and Product Managers, Communications teams, and other stakeholders to drive the adoption of new tools and processes. What you will do Tell the Story: Turn technical work into clear, compelling success stories. Translate Tech: Break down complex architecture into simple benefit‑focused content. Build Awareness: Create internal campaigns that promote programs and deliverables. Analyze Stakeholders: Identify how changes impact each user group. Drive Engagement: Use varied channels (Teams/Slack, AMAs, demos) to communicate. Enable Training: Produce cheat sheets, videos, and run workshops. Grow Change Network: Develop a Super User community for support and feedback. Track Adoption: Define KPIs and monitor where users struggle What we are looking for Solid experience with change‑management frameworks and the flexibility to adapt them creatively to needs. Technical-to-Business Translation: Ability to understand complex technical topics and communicate them clearly to executives and non‑technical audiences. Cross‑Functional Collaboration: Proven experience working with program, product, project, and communications teams. Exceptional Communication & Empathy: Strong storytelling, conflict‑resolution skills, and the ability to connect with stakeholders at all levels. Fast Learning & Tech Adoption: Ability to quickly grasp new software and processes and explain their value to others. Perks and benefits (our offer) Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers. Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location. Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more. Global collaboration - work with a diverse, international team. Innovative environment - be part of a forward-thinking and growth-oriented workplace. Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work. Team-building events including our company tradition (annual company event in Mazury). A pleasant surprise to start your journey with us in the form of a welcome pack. Recruitment process: HR call Technical Interview Interview with the dedicated Client Final decision/ Feedback Sounds interesting? Click "Apply" and have a chance to hear more!

🏢 Summary: The offer is for a Senior .NET Developer responsible for designing and developing applications and databases in public sector projects. The role includes building high-quality, scalable solutions, performing code reviews, creating tests, and collaborating in a Scrum team. The position also involves working with modern cloud, containerization, and CI/CD technologies. 🗂️ Requirements: Minimum 5 years of experience in .NET development within the last 10 years, Very good knowledge of C#, Experience with at least one: ASP.NET MVC, WPF, SignalR, WCF, Web API, Knowledge of OOP principles including SOLID and DRY, Experience with TDD or agile development practices, Experience with Visual Studio, Experience with Entity Framework or other ORM, Experience with SQL or NoSQL databases, Experience building SOAP, REST or SignalR services, Practical knowledge of IIS server, Experience with at least one frontend framework: Vue.js, Angular or React, Ability to program in HTML, JavaScript and CSS, Experience with Docker, Kubernetes or similar, Knowledge of Microsoft Azure, Experience with CI/CD tools, static code analysis and unit testing tools, Experience with Git version control system, Polish language proficiency at minimum C1 level 📃 Skills: .NET, C#, ASP.NET, MVC, WPF, SignalR, WCF, WebAPI, SOLID, DRY, TDD, VisualStudio, EntityFramework, SQL, NoSQL, SOAP, REST, IIS, Vue, Angular, React, HTML, JavaScript, CSS, Docker, Kubernetes, Azure, CI/CD, xUnit, Git, SCRUM 🏢 Description: Billennium to globalna firma technologiczna z ponad 20-letnim doświadczeniem, zaangażowana w innowacje i wspieranie przedsiębiorstw. Jako pracodawca oferujemy wspierające, nastawione na rozwój środowisko, w którym współpraca i kreatywność to naczelne wartości. Dołącz do nas, aby wspólnie kształtować przyszłość technologii! Kogo szukamy? Do naszego zespołu poszukujemy doświadczonej osoby na stanowisko: Senior .Net Developer, która wesprze nas w realizacji projektów IT — w obszarze public. Zakres zadań: Projektowanie i tworzenie aplikacji/baz danych Szacowanie czasochłonności zadań oraz wskazania ryzyka lub problemów przy ich realizacji Planowanie, tworzenie i wykonywanie testów aplikacji i rozwiązań Dbanie o jakość kodu źródłowego przeprowadzanie Code Review Wsparcie merytoryczne i techniczne innych członków zespołu Ścisła współpraca z zespołami analityków biznesowych, architektów, UX designerów oraz testerów Tworzenie dokumentacji technicznej Realizowanie zadań zgodnie z obowiązującymi zasadami i przyjętą metodyką pracy (SCRUM) Niezbędne umiejętności i kwalifikacje: Minimum 5 lat doświadczenia w programowaniu w technologiach .NET, zdobyte w ciągu ostatnich 10 lat. Bardzo dobra znajomość języka C#. Doświadczenie w pracy z co najmniej jedną technologią: ASP.NET MVC, WPF, SignalR, WCF lub Web API. Znajomość zasad projektowania obiektowego, w tym SOLID, DRY, oraz doświadczenie w stosowaniu TDD lub innych technik zwinnego wytwarzania oprogramowania. Doświadczenie w pracy z środowiskiem Visual Studio. Znajomość Entity Framework lub innej biblioteki ORM. Doświadczenie w tworzeniu aplikacji wykorzystujących relacyjne bazy danych SQL lub bazy NoSQL. Doświadczenie w budowaniu usług opartych o SOAP, REST lub SignalR. Praktyczna znajomość serwera klasy enterprise IIS. Praktyczna znajomość co najmniej jednego frameworka front-end: Vue.js, Angular lub React. Umiejętność programowania w HTML, JavaScript i CSS. Doświadczenie w pracy z konteneryzacją, taką jak Docker, Kubernetes lub technologie równoważne. Znajomość środowiska Microsoft Azure. Umiejętność korzystania z narzędzi wspierających proces wytwarzania oprogramowania, takich jak narzędzia CI/CD, statyczna analiza kodu, narzędzia do weryfikacji pokrycia testami jednostkowymi (np. xUnit) oraz system kontroli wersji GIT. Znajomość języka polskiego na poziomie umożliwiającym swobodną komunikację werbalną i pisemną. (min. C1) Nasza oferta: Pakiet benefitów pozapłacowych — Udemy for Business, prywatna opieka medyczna, karta Multisport, pakiet weterynaryjny, lekcje językowe, bony zakupowe Elastyczność — elastyczne godziny pracy i opcje pracy zdalnej/hybrydowej dostosowane do Twojego stylu życia i lokalizacji Rozwój kariery — dostęp do szkoleń i certyfikacji, współpraca z globalnymi partnerami IT (Microsoft, AWS, Snowflake, Salesforce) Angażująca społeczność — udział w wydarzeniach team buildingowych, hackathonach i inicjatywach CSR Firmowe tradycje — coroczne wydarzenie integracyjne na Mazurach Czekamy właśnie na Ciebie!

🏢 Summary: Offer for an experienced .NET Developer to design and develop applications and databases within public sector IT projects, working in a SCRUM environment with strong focus on code quality and collaboration. The role involves backend development, integration services, testing, and technical documentation. The position also requires security clearance and readiness for extended verification procedures. 🗂️ Requirements: Minimum 3 years of experience in .NET development, Very good knowledge of C#, Experience with at least one backend framework: ASP.NET MVC, WPF, SignalR, WCF, ASP.NET Core, or Web API, Knowledge of object-oriented design principles and best practices (SOLID, DRY, Clean Code), Experience with TDD, Proficiency with Visual Studio, Experience with Entity Framework or other ORM, Experience with relational SQL or NoSQL databases, Experience in building REST, SOAP, or SignalR services, Basic knowledge of React, Angular, or Vue, Experience with CI/CD tools, static code analysis, test coverage tools, xUnit or NUnit, and Git, Security clearance for access to classified information ("confidential"), Readiness to undergo extended clearance procedure for higher-level classified information 📃 Skills: .NET, C#, ASP.NET, MVC, WPF, SignalR, WCF, ASP.NET Core, Web API, SOLID, DRY, Clean Code, TDD, Visual Studio, Entity Framework, ORM, SQL, SQL Server, PostgreSQL, NoSQL, REST, SOAP, React, Angular, Vue, CI/CD, xUnit, NUnit, Git, SCRUM 🏢 Description: Billennium to globalna firma technologiczna z ponad 20-letnim doświadczeniem, zaangażowana w innowacje i wspieranie przedsiębiorstw. Jako pracodawca oferujemy wspierające, nastawione na rozwój środowisko, w którym współpraca i kreatywność to naczelne wartości. Dołącz do nas, aby wspólnie kształtować przyszłość technologii! Kogo szukamy? Do naszego zespołu poszukujemy doświadczonej osoby na stanowisko .NET Developera, która wesprze nas w realizacji projektów IT — w obszarze public. Zakres zadań: Projektowanie oraz rozwijanie aplikacji i baz danych w ramach realizowanych projektów. Przygotowywanie estymacji prac, wskazywanie potencjalnych trudności i możliwych zagrożeń realizacyjnych. Opracowywanie planów testów oraz ich wykonywanie w celu zapewnienia poprawności działania tworzonych rozwiązań. Dbanie o utrzymanie wysokiej jakości kodu, w tym udział w przeglądach i weryfikacji pracy innych programistów. Udzielanie wsparcia technicznego oraz dzielenie się wiedzą z członkami zespołu. Bieżąca współpraca z analitykami biznesowymi, architektami, projektantami UX i testerami przy tworzeniu nowych funkcjonalności. Przygotowywanie dokumentacji technicznej dla tworzonych komponentów i usług. Realizacja zadań zgodnie z obowiązującymi standardami technicznymi i metodyką pracy SCRUM. Niezbędne umiejętności i kwalifikacje: Minimum 3 lat doświadczenia w programowaniu w środowisku .NET Bardzo dobra znajomość języka C#. Praktyczne doświadczenie w pracy z co najmniej jedną technologią lub frameworkiem backendowym: ASP.NET MVC, WPF, SignalR, WCF, ASP.NET Core, Web API. Bardzo dobra znajomość zasad projektowania obiektowego oraz stosowanie dobrych praktyk (SOLID, DRY, Clean Code), oraz doświadczenie w stosowaniu TDD. Swoboda w pracy z środowiskiem Visual Studio Doświadczenie w korzystaniu z Entity Framework lub innego ORM. Praktyka w tworzeniu aplikacji korzystających z relacyjnych baz SQL (np. SQL Server, PostgreSQL) lub baz NoSQL. Doświadczenie w tworzeniu usług opartych o REST, SOAP lub SignalR. Podstawowa znajomość jednego z frameworków front-end: React, Angular, Vue. Doświadczenie w korzystaniu z narzędzi wspierających proces wytwarzania oprogramowania (CI/CD, statyczna analiza kodu, pokrycie testów, xUnit/NUnit oraz Git). Poświadczenie bezpieczeństwa dostępu do informacji niejawnych o klauzuli poufne; Gotowość na przeprowadzenie rozszerzonego postępowania sprawdzającego w zakresie dostępu do informacji niejawnych o klauzuli tajne i ściśle tajne; Nasza oferta: Pakiet benefitów pozapłacowych — Udemy for Business, prywatna opieka medyczna, karta Multisport, pakiet weterynaryjny, lekcje językowe, bony zakupowe Elastyczność — elastyczne godziny pracy i opcje pracy zdalnej/hybrydowej dostosowane do Twojego stylu życia i lokalizacji Rozwój kariery — dostęp do szkoleń i certyfikacji, współpraca z globalnymi partnerami IT (Microsoft, AWS, Snowflake, Salesforce) Angażująca społeczność — udział w wydarzeniach team buildingowych, hackathonach i inicjatywach CSR Firmowe tradycje — coroczne wydarzenie integracyjne na Mazurach Czekamy właśnie na Ciebie!

🏢 Summary: Opportunity for a Data Scientist to build and optimize a near real-time AI-driven intelligence platform in a highly regulated environment. The role focuses on developing scalable data pipelines, integrating and monitoring Large Language Models, and transforming unstructured data into actionable insights. You will drive automation and model performance within a cloud-based data ecosystem. 🗂️ Requirements: Expert-level Python for data processing and AI orchestration, Experience building scalable ETL/ELT pipelines, Hands-on experience with LLM frameworks and prompt engineering, Experience ingesting data from APIs, RSS feeds, and web scraping, Experience managing raw data structures in cloud data platforms, Experience deploying AI models to production environments, Knowledge of model monitoring and hallucination detection, Proficiency with version control using Git 📃 Skills: Python, ETL, ELT, LLM, NLP, APIs, RSS, WebScraping, Git, Cloud, DevOps, PromptEngineering 🏢 Description: Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! We are looking for a skilled Data Scientist to join an innovative AI initiative for a client in a highly regulated industry. The project focuses on transforming a periodic monitoring tool into a near real-time, daily intelligence platform Key Responsibilities: Ingestion Pipeline Development: Design, build, and maintain robust data pipelines using Python and cloud-based data platforms to ingest data from diverse sources such as RSS feeds, APIs, and web scraping. Data Platform Architecture: Manage raw data structures and ensure seamless data flow between ingestion pipelines and downstream applications. LLM Integration & Optimization: Implement and refine Large Language Models (LLMs) to categorize, summarize, and extract advanced insights (“Reasoning Modelling”) from unstructured data. LLM Ops: Establish monitoring frameworks for model performance, including hallucination detection, and implement continuous improvement loops based on expert feedback. Scalability & Automation: Support the transition to a fully automated 24-hour processing cycle within the data platform ecosystem. Technical Skills & Qualifications: Programming: Expert-level Python, particularly in data processing and AI orchestration. Data Engineering: Strong experience building scalable ETL/ELT pipelines in modern data platforms. AI / NLP: Hands-on experience with LLM frameworks and prompt engineering. Web Data Ingestion: Proficiency in handling RSS feeds, APIs, and both structured and unstructured web data. DevOps / LLM Ops: Familiarity with version control (Git) and deploying AI models into production environments. Perks and benefits: Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers. Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location. Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more. Global collaboration - work with a diverse, international team. Innovative environment - be part of a forward-thinking and growth-oriented workplace. Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work. Team-building events including our company tradition (annual company event in Mazury ). A pleasant surprise to start your journey with us in the form of a welcome pack. Recruitment process: HR call Technical Interview Interview with the dedicated Client Final decision/ Feedback Sounds interesting? Click "Apply" and have a chance to hear more!

🏢 Summary: The offer is for an experienced Project Manager to lead complex, multi-market IT transformation initiatives within a strategic program in the financial services sector. The role focuses on end-to-end project delivery, aligning business and IT teams, and ensuring effective governance, risk management, and stakeholder communication. You will drive process optimization and technology initiatives using Agile practices and Jira-based project tracking. 🗂️ Requirements: Minimum 5 years of Project Management experience in IT transformation, business applications, or infrastructure projects, Experience managing full project lifecycle from requirements analysis to implementation and optimization, Strong knowledge of SDLC and Agile methodologies, Experience in risk management, change management, and dependency tracking, Experience working with technical teams and senior stakeholders, Practical experience with Jira including task management and reporting, Ability to combine Project Management, Business Analysis, and Change Management, Very good English skills (B2/C1) 📃 Skills: ProjectManagement, SDLC, Agile, Jira, RiskManagement, ChangeManagement, BusinessAnalysis, KPI, Roadmapping, StakeholderManagement 🏢 Description: Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! About the Client Our client is a leading company in the debt management and financial services sector, operating across multiple international markets. You will join a strategic transformation program focused on process optimization, technology initiatives, and improving collaboration across business areas, IT teams, and global markets. What you will do • Lead complex transformation initiatives within a multi-market program, ensuring alignment between business, IT teams, international units, and program governance structures • Manage end-to-end project delivery, including planning, roadmap creation, milestones tracking, dependencies, risks, budget, and quality monitoring • Work closely with business process owners to analyze needs, structure requirements, prioritize initiatives, and support decision-making • Coordinate cooperation between multiple stakeholders, ensuring transparent communication and consistent information flow across markets and teams • Prepare project reports, KPI dashboards, analyses, and recommendations to support operational and strategic decisions • Organize and facilitate project meetings, status updates, alignment sessions, and decision-making forums • Maintain project governance using Jira and tracking tools, ensuring visibility of progress, blockers, dependencies, and delivery status What we are looking for • Minimum 5 years of experience in Project Management , preferably within IT transformation, business applications, or infrastructure projects • Experience managing the full project lifecycle: goal definition, requirements analysis, roadmap creation, delivery, implementation, and optimization • Strong understanding of SDLC , Agile methodologies, and cooperation with technical teams • Experience in risk management, change management, dependency tracking, and stakeholder communication • Ability to work effectively with senior stakeholders across business, IT, management, and international teams • Practical experience with Jira (creating tasks, reporting, dashboards, tracking progress and project metrics) • Ability to combine areas of Project Management, Business Analysis, and Change Management • Very good English communication skills ( B2/C1 ) Nice to have • Experience in the financial services industry • Knowledge of Lean Management methodologies • Experience working with multiple markets, countries, or distributed organizational units • Experience in fast-paced transformation environments Soft skills • Strong ownership mindset with the ability to drive topics independently and proactively • Ability to manage ambiguity, structure incomplete information, and turn it into actionable plans • Strategic, process-oriented, and analytical approach to solving complex challenges • Excellent communication skills with the ability to adapt communication style to different audiences • Strong organization skills with focus on quality, priorities, and successful delivery Perks and benefits • Comprehensive benefits – enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers • Flexibility – adaptable working hours and remote/hybrid work options to suit your lifestyle & location • Career growth – access to professional development opportunities and partnerships with Microsoft, AWS, Snowflake, Salesforce & more • Global collaboration – work with a diverse, international team • Innovative environment – be part of a forward-thinking and growth-oriented workplace • Engaging community – participate in team-building events, hackathons, and CSR initiatives • A pleasant surprise to start your journey with us in the form of a welcome pack Recruitment process • HR call • Technical interview • Interview with the dedicated client • Final decision / feedback 👉 Sounds interesting? Click “Apply” and let’s talk!

🏢 Summary: Senior Java Developer role focused on building and maintaining full‑stack healthcare applications that support oncology diagnosis and treatment. The position involves designing scalable, secure microservices-based systems, contributing to architecture, and working with cloud-native and DevOps environments. The goal is to deliver high-quality digital solutions that improve patient outcomes through advanced data and analytics capabilities. 🗂️ Requirements: 5+ years of software development experience, Degree in Engineering, B2+ English proficiency, Expert knowledge of Java, Experience with Spring Boot, Experience with Hibernate/JPA, Experience designing RESTful APIs, Understanding of microservices architecture, Knowledge of event-driven and distributed systems, Strong SQL database knowledge, Experience with AWS services (EKS, S3, DynamoDB, ElastiCache, Lambda), Experience with Docker and Kubernetes, Experience with AI coding assistants and LLMs, Experience building reusable architectural components 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, REST, Microservices, SQL, AWS, EKS, S3, DynamoDB, ElastiCache, Lambda, Docker, Kubernetes, LLM, AI, DevOps 🏢 Description: Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! We are looking for an experienced Senior Java Developer to join a team building advanced digital solutions that support the diagnosis and treatment of oncology patients. Our mission is to improve patient outcomes by combining modern technologies with the healthcare domain. You will work on a suite of products designed to streamline medical case coordination, enable efficient data ingestion and management, provide a holistic view of the patient journey, and deliver analytics and reporting capabilities that help make treatment more effective. What you will do Design, develop, and maintain full‑stack features across a complex ecosystem of healthcare‑focused applications. Collaborate with cross‑functional teams to deliver scalable, secure, and high‑quality solutions. Contribute to architectural decisions and technical strategy. Ensure code quality through testing, reviews, and adherence to engineering best practices. Work with cloud‑native infrastructure and modern DevOps tooling. Support continuous improvement of development processes and system reliability. What we are looking for 5+ years of hands-on software development experience with a proven track record of delivering scalable systems Degree in an Engineering discipline, B2+ English, and a collaborative spirit for mentoring and team-building Expert knowledge of Java (latest versions), Spring Boot, Hibernate/JPA, and RESTful API design AI-First Mindset: proficiency in using AI coding assistants and LLMs for software development Deep understanding of microservices, event-driven patterns (Async), and distributed systems Excellent knowledge of SQL databases Strong experience with AWS (EKS, S3, DynamoDB, ElastiCache, Lambda) and modern Docker/K8s workflows Experience developing reusable architectural components for multiple projects Perks and benefits (our offer) Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers. Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location. Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more. Global collaboration - work with a diverse, international team. Innovative environment - be part of a forward-thinking and growth-oriented workplace. Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work. Team-building events including our company tradition (annual company event in Mazury). A pleasant surprise to start your journey with us in the form of a welcome pack. Recruitment process: HR call Technical Interview Interview with the dedicated Client Final decision/ Feedback Sounds interesting? Click "Apply" and have a chance to hear more!

🏢 Summary: Frontend Developer role focused on building reusable components and platform-level solutions for scalable banking applications. The position involves developing and maintaining React and TypeScript-based frontend systems, shared NPM libraries, and design system components. You will ensure high quality through testing and contribute to frontend architecture and best practices. 🗂️ Requirements: Strong experience with React and TypeScript, Proficiency in JavaScript and modern CSS, Experience building scalable frontend applications, Experience creating and maintaining shared component libraries, Experience with unit and end-to-end testing, Knowledge of Jest, Testing Library, or Cypress, Strong knowledge of Git and version control workflows, Understanding of accessibility standards (WCAG), Experience with Jira, Confluence, and Bitbucket 📃 Skills: React, TypeScript, JavaScript, NPM, CSS, Jest, TestingLibrary, Cypress, Git, WCAG, Jira, Confluence, Bitbucket 🏢 Description: 🔸Important Note 🔸 Hybrid mode : 1 day per week in the office (Wednesday) . Occasionally, there may be exceptions and a request to come to the office on another day. Your notice period: maximum 1 month . Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! About the Client Our client is a major player in the banking sector, developing modern digital platforms and frontend solutions used by multiple product teams. The role focuses on building reusable frontend components and platform-level solutions that support scalable product development across the organization. What you will do • Develop reusable frontend components and platform solutions such as shared NPM libraries and design system components • Build and maintain scalable frontend applications using React, TypeScript, and modern JavaScript tooling • Write and maintain unit and end-to-end tests ensuring high quality and reliability of delivered solutions • Collaborate with designers, platform teams, and product teams to maintain consistency and usability across applications • Provide technical support and guidance to other teams using shared frontend solutions • Maintain technical documentation and contribute to improving frontend architecture and development practices What we are looking for • Strong experience with React, JavaScript, TypeScript, NPM, and modern CSS • Experience building and maintaining scalable frontend applications and shared component libraries • Solid experience with unit testing and e2e testing (e.g. Jest, Testing Library, Cypress) • Strong knowledge of Git and version control workflows (branching, rebasing, commit management) • Understanding of accessibility standards (WCAG / a11y) and ability to build accessible interfaces • Experience working with Jira, Confluence, and Bitbucket • Good English communication skills (minimum B2 ) Nice to have • Experience working with design systems and reusable UI component libraries • Knowledge of microfrontend architecture • Experience with hybrid mobile applications (WebView, React Native, Capacitor, etc.) • Familiarity with AI-assisted development tools or AI agents Soft skills • Attention to detail and commitment to delivering consistent, high-quality user interfaces • Pragmatic, delivery-oriented mindset focused on achieving agreed outcomes • Strong communication skills and ability to collaborate with designers, analysts, and developers • Ability to work with documentation and follow established architecture guidelines Perks and benefits • Comprehensive benefits – enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers • Flexibility – adaptable working hours and remote/hybrid work options to suit your lifestyle & location • Career growth – access to professional development opportunities and partnerships with Microsoft, AWS, Snowflake, Salesforce & more • Global collaboration – work with a diverse, international team • Innovative environment – be part of a forward-thinking and growth-oriented workplace • Engaging community – participate in team-building events, hackathons, and CSR initiatives • A pleasant surprise to start your journey with us in the form of a welcome pack Recruitment process • HR call • Technical interview • Interview with the dedicated client • Final decision / feedback 👉 Sounds interesting? Click “Apply” and let’s talk!

🏢 Summary: The role focuses on designing and developing AI-powered applications and intelligent assistants using Python and Large Language Models to automate banking business processes. You will build and implement LLM-based solutions, including RAG systems and agentic workflows, ensuring scalability and production readiness. The project involves long-term collaboration within a hybrid work model in Warsaw. 🗂️ Requirements: Strong experience in Python development, Experience building production-ready applications, Practical experience with LangChain and LangGraph, Hands-on experience with LLM-based solutions (RAG, embeddings, vector search, AI agents, tool calling), Minimum 1 year of experience delivering LLM or AI-based applications, Experience with Git and version control practices, Experience with Jira, Confluence, and Bitbucket, English proficiency at minimum B2 level 📃 Skills: Python, LangChain, LangGraph, LLM, RAG, Embeddings, VectorSearch, AIAgents, Git, Jira, Confluence, Bitbucket, AzureOpenAI, AzureAISearch, React, Streamlit, Databricks, CosmosDB, Redis, Grafana 🏢 Description: 🔸Important Note!🔸 🔔 This is hybrid role in Warsaw (1 day per week in the office - possible extension of hybrid type of work 50/50) 🔔 Project duration - over a year Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! About the Client Our client is a leading international bank investing in modern AI-driven solutions to automate business processes and enhance digital capabilities. You will join a team responsible for building AI applications, intelligent assistants, and LLM-based solutions used across the organization. What you will do • Design and develop AI-powered applications and services using Python to automate business processes • Build intelligent assistants and bots based on Large Language Models (LLMs) , including RAG solutions and AI agents • Implement agentic workflows , including agent roles, tool calling, and execution flow management • Work with internal AI frameworks and contribute to the development of new reusable AI components • Collaborate with business teams to analyze requirements, troubleshoot issues, and propose improvements • Ensure high quality, scalability, and maintainability of delivered AI solutions What we are looking for • Strong experience in Python development and building production-ready applications • Practical experience with LangChain and LangGraph • Hands-on experience with LLM-based solutions, including RAG, embeddings, vector search, AI agents, and tool calling • Minimum 1 year of practical experience delivering applications using LLMs or AI-based solutions • Experience working with Git and good understanding of version control practices • Experience with development tools such as Jira, Confluence, and Bitbucket • Good English communication skills ( minimum B2 ) Nice to have • Experience with Azure AI Stack (Azure OpenAI, Azure AI Search, AI Foundry) • Knowledge of React, Streamlit, Databricks, Cosmos DB, Redis, or Grafana • Understanding of machine learning fundamentals • Experience with LLM fine-tuning • Ability to design system architecture and create High Level Design documentation Soft skills • Ability to work independently and propose technical solutions based on business needs • Proactive approach and ownership mindset • Strong communication skills with developers, analysts, architects, and business stakeholders • Pragmatic approach focused on delivering valuable solutions Perks and benefits • Comprehensive benefits – enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers • Flexibility – adaptable working hours and remote/hybrid work options to suit your lifestyle & location • Career growth – access to professional development opportunities and partnerships with Microsoft, AWS, Snowflake, Salesforce & more • Global collaboration – work with a diverse, international team • Innovative environment – be part of a forward-thinking and growth-oriented workplace • Engaging community – participate in team-building events, hackathons, and CSR initiatives • A pleasant surprise to start your journey with us in the form of a welcome pack Recruitment process • HR call • Interview with the dedicated client • Final decision / feedback 👉 Sounds interesting? Click “Apply” and let’s talk!

🏢 Summary: Hybrid Test Automation Engineer role focused on designing and scaling automated testing frameworks for complex travel technology solutions. The position involves defining QA standards, improving automation frameworks, and integrating testing into CI/CD pipelines within an Agile and DevOps environment. The role requires close collaboration with cross-functional teams in a 50/50 hybrid model in Warsaw. 🗂️ Requirements: Strong proficiency in Java programming, Knowledge of software architecture principles, Understanding of design patterns, Expert experience with Selenium, Expert experience with Selenium Grid, Experience in designing test automation frameworks, Hands-on experience with CI/CD pipelines, Experience with Jenkins, Strong knowledge of Agile methodologies, Understanding of DevOps practices, Experience with QA tools and test environments, Cloud experience (Azure or other major platforms), Proficiency in English 📃 Skills: Java, Selenium, SeleniumGrid, Jenkins, Azure, CI/CD, Agile, DevOps, QA, Automation, Git 🏢 Description: Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! We are looking for an experienced Test Automation Engineer who will join a project for our client in the travel technology industry. To ensure strong collaboration with on-site functional experts and customer care, the team operates in a 50/50 hybrid model (Warsaw). What you will do: Participate in QA forums and contribute to methodology, framework, and tooling evolution. Define and execute test standards for complex, cross-functional solutions. Apply QA methodologies: test planning, design, execution, and reporting. Manage defects, perform root cause analysis, and drive corrective actions. Design and improve scalable test automation frameworks (Selenium, Selenium Grid). Perform code reviews and ensure automation best practices. Develop and maintain CI/CD pipelines (e.g., Jenkins). Maintain high-quality standards and define relevant KPIs. Promote and optimize testing tools and environments. Support environmental impact measurement and reduction in QA activities. What we are looking for: Strong proficiency in Java programming , including solid knowledge of software architecture principles and design patterns. Deep understanding of Agile methodologies and DevOps practices . Expert-level experience with Selenium and Selenium Grid , including advanced test automation capabilities. Expertise in QA tools , test environments, and modern test automation frameworks/solutions . Hands-on experience with CI/CD pipelines and tools (e.g., Jenkins) to streamline testing and deployment processes. Strong cloud experience , ideally with Microsoft Azure or other major cloud platforms. Proficiency in English . Perks and benefits: Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers. Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location. Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more. Global collaboration - work with a diverse, international team. Innovative environment - be part of a forward-thinking and growth-oriented workplace. Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work. Team-building events including our company tradition (annual company event in Mazury ). A pleasant surprise to start your journey with us in the form of a welcome pack.