Senior Backend Python Developer (AI Incubator)

🏢 Summary: Fullstack Python Developer role focused on building scalable frontend and backend applications for scientific data and analysis workflows. The position involves developing React/TypeScript interfaces, Python/Django services, and REST/GraphQL APIs in a cloud-based environment. The role requires working with modern databases and AWS within agile teams. 🗂️ Requirements: 5+ years of experience in data-focused software development, Experience working in agile teams, Strong TypeScript and React skills, Strong Python skills, Experience with Django and Celery, Hands-on experience with REST APIs, Hands-on experience with GraphQL APIs, Proficiency with GitHub, Experience with relational and NoSQL databases, Experience with Postgres, Experience with MongoDB, Experience with AWS, Degree in bioinformatics, computer science, or related field 📃 Skills: Python, Django, Celery, TypeScript, React, REST, GraphQL, GitHub, Postgres, MongoDB, AWS, pytest, Playwright 🏢 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 Fullstack Python Developer for our client — a company operating at the intersection of software engineering and scientific innovation. What you will do: Develop scalable frontend (TypeScript, React) and backend (Python, Django, Celery) applications. Build and maintain REST and GraphQL APIs. Solve complex engineering challenges related to scientific data and analysis workflows. Collaborate with local and off‑shore teams in an agile, iterative environment. Work with Postgres, MongoDB, and AWS cloud services. Ensure high code quality through testing (pytest, optionally Playwright) What we are looking for: 5+ years of experience in data‑focused software development within agile teams. Strong skills in TypeScript/React and Python (Django, Celery). Hands‑on experience with REST and GraphQL API development. Proficiency with GitHub and relational/NoSQL databases (Postgres, MongoDB). Experience working with AWS and modern cloud tooling. Degree in bioinformatics, computer science, or a related field; biological knowledge is a plus. 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 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: 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: Mid-level DevOps Engineer role focused on supporting and maintaining cloud infrastructure in Microsoft Azure for a banking sector client. The position involves Infrastructure as Code with Terraform, CI/CD automation, cloud operations, and integrations with AI services, with growth toward MLOps. Hybrid work model with office presence twice a month. 🗂️ Requirements: Commercial experience in DevOps or Cloud Engineering (mid level), Hands-on experience with Microsoft Azure, Experience with Terraform and Infrastructure as Code, Understanding of CI/CD pipelines, Knowledge of cloud operations and monitoring, Basic understanding of AI services in Microsoft ecosystem, Exposure to OpenAI integrations or ML tooling 📃 Skills: Azure, Terraform, CI/CD, OpenAI, GCP, IaC, MLOps, AI, ML 🏢 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 Mid DevOps Engineer to join our team and support the development and maintenance of modern cloud-based solutions for a client from the banking sector. In this role, you will work on cloud infrastructure, automation, and operational support, with the opportunity to grow toward MLOps in future project phases. This is a hybrid role – presence in the Client’s office is required once every two weeks, with offices located in Łódź or Warsaw. What you will do Support and maintain cloud infrastructure in Microsoft Azure Develop and manage Infrastructure as Code solutions using Terraform Collaborate with development and operations teams to ensure stable and scalable environments Monitor and optimize cloud resources and deployments Support integrations related to AI services within the Microsoft ecosystem Participate in troubleshooting, incident resolution, and environment improvements Contribute to automation initiatives and CI/CD processes Gain exposure to modern AI/ML operational tooling and cloud-native solutions What we are looking for Commercial experience in a DevOps / Cloud Engineering role (mid level) Hands-on experience with Microsoft Azure Knowledge of Terraform and Infrastructure as Code principles Basic understanding of AI services in the Microsoft ecosystem Exposure to OpenAI integrations or ML tooling Understanding of CI/CD pipelines and cloud operations Analytical mindset and willingness to learn new technologies Team-oriented approach and good communication skills Experience with GCP is a plus 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 Career growth - development opportunities and access to training within partnerships with Microsoft, AWS, Snowflake, Salesforce & more Global collaboration - work with an international team Innovative environment - contribute to cutting-edge GenAI solutions Engaging community - team-building events, CSR initiatives, and hackathons Annual company event in Mazury Welcome pack to kick off your journey with us

🏢 Summary: Mid Java Full Stack Developer role for a long-term project in the pharma industry, focused on building and maintaining a regulated clinical platform in a cloud-based AWS environment. The position involves developing frontend and backend components in compliance with medical device standards and collaborating with cross-functional teams to deliver secure, high-quality features. 🗂️ Requirements: 3+ years of experience in modern software development, Strong backend development experience, Strong frontend development experience, Experience with Angular and TypeScript, Experience with Java and Spring Boot, Experience with AWS cloud environments, Experience with relational databases, Experience with messaging or workflow systems, Experience with automated testing and CI/CD pipelines, Knowledge of medical device regulations or regulated systems, English proficiency at B2 level or higher, Polish proficiency at B2 level or higher 📃 Skills: Java, Spring, SpringBoot, Angular, TypeScript, Nx, NgRx, SCSS, RxJS, Maven, PostgreSQL, Liquibase, ActiveMQ, AWS, S3, Lambda, KMS, Activiti, BPMN, SAML, JWT, Spark, Parquet, Docker, CI/CD 🏢 Description: More about us 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 We are looking for an Mid Java Full Stack Developer who will join a long-term project for our client in pharma industry. What will you do: Design, develop, and maintain frontend and backend components of a regulated clinical platform Implement high-quality, traceable, and design-controlled code in compliance with medical device regulations and quality standards Collaborate with cross-functional teams (product, QA, DevOps, clinical experts) to deliver end-to-end features Ensure system reliability, security, and performance in a cloud-based, multi-tenant AWS environment Contribute to testing, documentation, and continuous improvement of development and deployment processes What we are looking for: 3+ years of experience in modern software development, preferably in complex or regulated systems Strong knowledge of backend development and frontend development Frontend Angular 20, Nx 22, NgRx, TypeScript 5.9, SCSS, RxJS 7, Roche ONE Design System, Okta (SAML SSO), IGV.js, Luxon, ngx-translate Backend Java, Spring Boot, Maven, PostgreSQL, Liquibase, ActiveMQ, AWS S3, AWS Lambda, AWS KMS, Activiti 6 (BPMN), SAML 2.0, JWT, SnpEff, GATK, Apache Parquet, Apache Spark Experience with cloud-based architectures, ideally AWS , and containerized environments Familiarity with relational databases (e.g. PostgreSQL ) and messaging or workflow systems Experience with automated testing, CI/CD pipelines, and code quality tools English and Polish proficiency at B2 level or higher, enabling effective communication in an international environment 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: Long-term project for a Java Full Stack Developer to design and maintain a regulated clinical platform in the pharma industry, covering both frontend and backend in a cloud-based AWS environment. The role focuses on delivering high-quality, compliant, and secure solutions aligned with medical device regulations. You will work on end-to-end features within a cross-functional team using modern technologies. 🗂️ Requirements: Professional experience in modern software development, Strong knowledge of Java and Spring Boot, Strong knowledge of Angular and TypeScript, Experience with AWS cloud environments, Experience with relational databases, especially PostgreSQL, Experience with messaging or workflow systems, Experience with CI/CD pipelines and automated testing, Experience working with regulated or complex systems, English proficiency at B2 level or higher, Polish proficiency at B2 level or higher 📃 Skills: Java, Spring, SpringBoot, Angular, TypeScript, SCSS, RxJS, NgRx, Nx, Maven, PostgreSQL, Liquibase, ActiveMQ, AWS, S3, Lambda, KMS, Activiti, BPMN, SAML, JWT, Spark, Parquet, Docker, CI/CD, Okta 🏢 Description: More about us 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 We are looking for an experienced Java Full Stack Developer who will join a long-term project for our client in pharma industry. What will you do: Design, develop, and maintain frontend and backend components of a regulated clinical platform Implement high-quality, traceable, and design-controlled code in compliance with medical device regulations and quality standards Collaborate with cross-functional teams (product, QA, DevOps, clinical experts) to deliver end-to-end features Ensure system reliability, security, and performance in a cloud-based, multi-tenant AWS environment Contribute to testing, documentation, and continuous improvement of development and deployment processes What we are looking for: Professional experience in modern software development, preferably in complex or regulated systems Strong knowledge of backend development and frontend development Frontend Angular 20, Nx 22, NgRx, TypeScript 5.9, SCSS, RxJS 7, Roche ONE Design System, Okta (SAML SSO), IGV.js, Luxon, ngx-translate Backend Java, Spring Boot, Maven, PostgreSQL, Liquibase, ActiveMQ, AWS S3, AWS Lambda, AWS KMS, Activiti 6 (BPMN), SAML 2.0, JWT, SnpEff, GATK, Apache Parquet, Apache Spark Experience with cloud-based architectures, ideally AWS , and containerized environments Familiarity with relational databases (e.g. PostgreSQL ) and messaging or workflow systems Experience with automated testing, CI/CD pipelines, and code quality tools English and Polish proficiency at B2 level or higher, enabling effective communication in an international environment 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: Long-term hybrid contract for a Java Full Stack Developer with Angular in the banking and finance sector. The role focuses on developing and maintaining full stack solutions aligned with a multi-year product roadmap, ensuring high quality through testing, code reviews, and CI/CD practices. You will collaborate in an agile team to deliver scalable, production-ready software. 🗂️ Requirements: 5+ years experience as Java Full Stack Developer, Strong proficiency in Java 17+, Experience with Spring Boot framework, Experience with Angular 15, Knowledge of micro frontends architecture, Experience with relational databases and Oracle PL/SQL, Experience with Hibernate and Liquibase, Experience writing unit tests with JUnit and Jest, Familiarity with CI/CD pipelines, Experience with Kubernetes, Experience with code review and version control workflows 📃 Skills: Java, SpringBoot, Swagger, IBMMQ, Feign, Vavr, JUnit, Hibernate, Oracle, PLSQL, Liquibase, Maven, Angular, Nx, Microfrontends, Jest, NgRx, Bitbucket, Jenkins, Sonar, Kubernetes, ELK 🏢 Description: More about us 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 We are looking for an experienced Java Full Stack Developer with Angular who will join a long-term project for our client in banking and finance industry. What will you do: Develop software in alignment with project requirements and a multi‑year product roadmap. Collaborate closely with the team to shape solutions that best meet user expectations. Ensure high-quality deliverables through strong focus on requirements, test coverage, and code reviews. Contribute to effort estimation, sprint planning, and ongoing progress reporting. Maintain a proactive approach to identifying risks, issues, and improvements throughout the development lifecycle. What we are looking for: 5+ years of professional experience in Java Full Stack Developer position Proficiency with back‑end technologies such as: Java 17+, Spring Boot, Swagger, IBM MQ, Feign, vavr, JUnit, Hibernate, Oracle PL/SQL, Liquibase, and Maven. Experience with front‑end technologies including : Angular 15, nx, micro front‑ends, Jest, and NgRx. Familiarity with CI/CD and DevOps tools (Bitbucket, Jenkins, Sonar, Kubernetes, ELK) Fluency in English and Polish The role is designed for a hybrid work model, with 1–2 days per week from the client office in Kraków or Warsaw. 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: 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: 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: The offer is for a Cloud & Infrastructure Engineer responsible for maintaining and developing hybrid infrastructure across on-premises and Microsoft cloud environments. The role focuses on ensuring stability, security, automation, and scalability of systems, including Azure PaaS and Microsoft 365 services. The position involves end-to-end work across architecture, engineering, and operations in a secure enterprise environment. 🗂️ Requirements: Minimum 3+ years of experience in cloud, infrastructure, operations or engineering roles, Strong experience with Microsoft 365 services (SharePoint Online, Power Apps, Intune, M365 admin portals), Very good understanding of Microsoft 365 security principles (MFA, Conditional Access), Practical knowledge of Microsoft Graph, Very good knowledge of Windows Server (on-prem), Experience with Microsoft Azure cloud solutions, Experience in designing applications based on Azure PaaS, Strong PowerShell scripting skills, Basic Bash scripting skills, Experience with Jira, English level B2 or higher 📃 Skills: Azure, Microsoft365, SharePoint, PowerApps, Intune, MicrosoftGraph, WindowsServer, PowerShell, Bash, Jira, AWS, GCP, MFA, ConditionalAccess 🏢 Description: Why Billennium? We are a global technology company providing IT services and digital solutions to clients around the world. Headquartered in Poland, with offices in Canada, Malaysia, Germany, Switzerland and India, we bring together over 1,700 professionals who share one mission -to harness technology and innovation to make the world run better. At the heart of Billennium is our vibrant and people-centric culture, where everyone’s potential matters. We embrace diversity, inclusion, and flexibility, empowering our employees to grow and thrive. Our values - captured by the acronym TIGER - define who we are and how we work: T rust, I nnovation, G rowth, E nergy, R esponsibility – guide us in everything we do. Role Summary We are looking for a passionate Cloud & Infrastructure Engineer to join our team. You’ll play a key role in ensuring the stability, automation and development of our hybrid infrastructure — including on‑prem servers, Microsoft cloud services, application support and advanced network environments. You will work end‑to‑end across architecture, engineering and operations, collaborating with cross‑functional teams to deliver secure, scalable and automated solutions. What you will do: Maintain, optimize and develop hybrid infrastructure (on‑prem servers, cloud environments, networks and application platforms). Provide advanced support for key business applications, ensuring stability and efficient operations. Manage and configure network devices, firewalls and connections in an end‑to‑end model. Design and implement solutions based on Microsoft Azure PaaS and Microsoft 365 ecosystem. Automate operational processes using PowerShell and Bash scripting. Ensure high standards of security and compliance (MFA, Conditional Access, cloud and on‑prem security). Collaborate with architecture, engineering and operations teams to deliver scalable technical solutions. Why you? Basic Qualifications: Minimum 3+ years of experience in a similar role (infrastructure, cloud, operations or engineering). Strong experience with Microsoft 365 services : SharePoint Online, Power Apps, Intune, M365 admin portals. Very good understanding of Microsoft 365 security principles (MFA, Conditional Access). Practical knowledge of Microsoft Graph , including Graph Explorer. Very good knowledge of Windows Server (on‑prem) and Microsoft Azure cloud solutions . Experience in designing applications based on Azure PaaS . Strong scripting skills in PowerShell (automation end‑to‑end) and basic Bash for Unix environments. Experience with Jira . English at B2 level . Soft skills: ability to work under time pressure, teamwork orientation, strategic thinking. Nice to have qualifications: Knowledge of AWS and Google Cloud Platform . Experience with DevOps practices across full stack (databases, services, code, deployment, monitoring) — ideally in Azure. Benefits Professional development – continuous learning opportunities and internal mobility. Comprehensive benefits – enjoy Udemy for Business and Worksmile platform. Flexibility – adaptable working hours and remote/hybrid work options. Global collaboration – work with diverse international teams across continents. Innovative environment – be part of a forward-thinking, growth-oriented workplace. Team-building traditions – including our annual company event.