AZURE API DEVELOPER

🏢 Summary: B2B Senior Full‑Stack Engineer role focused on designing and building end‑to‑end Azure‑based integration solutions using .NET and Python. The position combines solution architecture with hands‑on development of APIs, microservices, and event‑driven services integrating platforms like Highspot, Pendo, and Dynamics. You will contribute to scalable, secure, low‑latency systems and support future migration to GCP. 🗂️ Requirements: 7+ years experience with Azure (Functions, APIM, Service Bus), Strong proficiency in .NET and backend service development, Practical experience with Python, Experience designing and building API and microservices integrations, Experience with unit testing and quality‑first approach, Experience with Application Insights for monitoring and optimization, Experience with CRM or integration systems, Ability to design and deliver end‑to‑end solutions independently, English proficiency at B2+ level 📃 Skills: Azure, Functions, APIM, ServiceBus, .NET, C#, Python, Microservices, API, ApplicationInsights, Dynamics, Highspot, Pendo, GCP 🏢 Description: Senior Full‑Stack Engineer (.NET + Azure) Model pracy: hybrydowy (2 dni w tygodniu z biura w Krakowie) Forma współpracy: B2B Stawka: 190–230 PLN/h Dołączysz do zespołu, który buduje nowoczesne rozwiązania integracyjne dla globalnych platform (Highspot, Pendo, Dynamics). W tej roli połączysz solution design z hands‑on developmentem, tworząc kluczowe elementy architektury integracyjnej opartej o Azure i .NET. 🎯 Twoja rola Projektowanie end‑to‑end rozwiązań integracyjnych (API, microservices, event‑driven). Budowa i rozwój usług opartych o Azure Functions, APIM, Service Bus . Integracja platform Highspot i Pendo z systemami wewnętrznymi. Refaktoryzacja i optymalizacja kodu Python wykorzystywanego w transformacjach Pendo. Tworzenie bezpiecznych, niskolatencyjnych ścieżek komunikacji między backendem a UI. Udział w przeglądach architektonicznych i współpraca z Lead Solutions Architect. Wsparcie w planowaniu przyszłej migracji rozwiązań do GCP . 🧰 Stack technologiczny Azure: Functions, APIM, Service Bus, App Insights Backend: .NET (C#, .NET 6/7/8) Python: transformacje i optymalizacja kodu Pendo Microservices, API‑first, event‑driven Application Insights (monitoring, debugging, performance) CRM / systemy integracyjne (Dynamics, Highspot, Pendo) ✅ Wymagania 7+ lat doświadczenia w pracy z Azure (Functions, APIM, Service Bus). Bardzo dobra znajomość .NET i doświadczenie w budowie usług backendowych. Praktyczna znajomość Pythona . Doświadczenie w projektowaniu i budowie integracji API / microservices . Umiejętność tworzenia unit testów i pracy w podejściu quality‑first. Doświadczenie z Application Insights (monitoring, optymalizacja). Praktyka w pracy z systemami CRM / integracyjnymi . Zdolność do samodzielnego projektowania i dowożenia rozwiązań end‑to‑end. Bardzo dobra znajomość języka angielskiego (min. B2+) — praca w środowisku międzynarodowym. ⭐ Mile widziane Doświadczenie z GCP . Znajomość Highspot, Pendo lub MS Dynamics . Doświadczenie w refaktoryzacji i optymalizacji kodu integracyjnego. 💼 Co oferujemy Długoterminowy projekt w środowisku enterprise. Pracę z nowoczesnym stackiem opartym o Azure i integracje globalnych platform. Realny wpływ na architekturę i kierunek rozwoju rozwiązań integracyjnych. Współpracę z doświadczonym Lead Solutions Architectem i seniornymi inżynierami. Możliwość pracy z Highspot, Pendo i Dynamics w skali globalnej. Zapraszamy do odwiedzenia naszej strony www.antal.pl

🏢 Summary: Senior Full-Stack Developer role focused on designing and delivering complex API and microservice integration solutions in a banking environment. The position combines end-to-end solution design with hands-on development, particularly within Azure-based ecosystems. The developer will lead secure, low-latency integrations and support future platform migrations. 🗂️ Requirements: 7+ years of hands-on Azure development experience, Experience with Azure Functions, APIM, Service Bus and Application Insights, Strong proficiency in Python, Strong proficiency in Java or .NET, Experience designing API solutions and microservice integration patterns, Experience building integrations within CRM environments, Experience writing and maintaining unit tests, Experience monitoring and optimizing applications using Application Insights, Ability to design secure, low-latency system integrations 📃 Skills: Azure, Functions, APIM, ServiceBus, AppInsights, Python, Java, .NET, APIs, Microservices, CRM, UnitTesting 🏢 Description: 🌍 Work mode: hybrid (preferably from Krakow or Warsaw): • People from Krakow and Warsaw - 6x per month in the office • People outside of Krakow and Warsaw - 1-2x per month in the office ⏰ Start : June/July 2026. 📝 Contract : B2B. ⏳ Duration : >12 months contracts. 📕 Project language : English. 💼 Industry : Banking. 📑 Workload: Full time. ⚙️ Recruitment process : 1h technical screening on zoom. 💻 Equipment : Work on emagine or your own equipment. We are looking for a Senior Full-Stack Developer who thrives at the intersection of technical design and hands-on execution . In this role, you will be the technical engine driving key initiatives for integration projects. Unlike a traditional architect role, your focus will be on Solution Design: creating the technical 'how-to' for complex integrations and then leading the end-to-end development . Main Responsibilities: Draft end-to-end technical designs for API solutions and microservice integration patterns. Own the full development cycle, ensuring secure, low-latency communication paths between backend systems and UI/UX layers. Manage the technical integration of platforms using Azure Functions and Service Bus. Fine-tune Python-based code while having the agility to refactor logic as needed. Participate in design reviews and incorporate stakeholder feedback. Support discussions surrounding potential migrations to managed environments. Key Requirements: 7+ years of hands-on experience in Azure development (Functions, App Insights, APIM, and Service Bus ). Expertise in Python, with strong proficiency in Java or .NET. A 'quality-first' mindset with extensive experience writing and maintaining unit tests. Deep expertise in using Application Insights for monitoring and optimizing live applications. Proven experience in designing and building integration patterns within a CRM context. Nice to Have: Experience with Google Cloud Platform (GCP). Prior experience with Highspot, Pendo, or MS Dynamics integrations. Other Details: This position will involve working on integration projects, with potential opportunities for remote collaboration. The role emphasizes hands-on development and strategic planning for future migrations.

🏢 Summary: Senior Full-Stack Developer role focused on designing and delivering end-to-end integration solutions within a banking environment, with strong emphasis on Azure-based architectures and hands-on development. The position combines solution design responsibilities with full development lifecycle ownership, particularly around APIs and microservices. Long-term B2B contract with hybrid work model and English-speaking project context. 🗂️ Requirements: 7+ years of experience in Azure development, Hands-on experience with Azure Functions, App Insights, APIM and Service Bus, Strong expertise in Python, Strong proficiency in Java or .NET, Experience in writing and maintaining unit tests, Expertise in Application Insights for monitoring live applications, Experience in designing and building integration patterns in CRM context, Ability to design end-to-end API and microservice integrations 📃 Skills: Azure, Functions, AppInsights, APIM, ServiceBus, Python, Java, .NET, APIs, Microservices, CRM, UnitTesting, GCP 🏢 Description: 🌍 Work mode: hybrid (preferably from Krakow or Warsaw): • People from Krakow and Warsaw - 6x per month in the office • People outside of Krakow and Warsaw - 1-2x per month in the office ⏰ Start : June/July 2026. 📝 Contract : B2B. ⏳ Duration : >12 months contracts. 📕 Project language : English. 💼 Industry : Banking. 📑 Workload: Full time. ⚙️ Recruitment process : 1h technical screening on zoom. 💻 Equipment : Work on emagine or your own equipment. We are looking for a Senior Full-Stack Developer who thrives at the intersection of technical design and hands-on execution . In this role, you will be the technical engine driving key initiatives for integration projects. Unlike a traditional architect role, your focus will be on Solution Design: creating the technical 'how-to' for complex integrations and then leading the end-to-end development . Main Responsibilities: Draft end-to-end technical designs for API solutions and microservice integration patterns. Own the full development cycle, ensuring secure, low-latency communication paths between backend systems and UI/UX layers. Manage the technical integration of platforms using Azure Functions and Service Bus. Fine-tune Python-based code while having the agility to refactor logic as needed. Participate in design reviews and incorporate stakeholder feedback. Support discussions surrounding potential migrations to managed environments. Key Requirements: 7+ years of hands-on experience in Azure development (Functions, App Insights, APIM, and Service Bus ). Expertise in Python, with strong proficiency in Java or .NET. A 'quality-first' mindset with extensive experience writing and maintaining unit tests. Deep expertise in using Application Insights for monitoring and optimizing live applications. Proven experience in designing and building integration patterns within a CRM context. Nice to Have: Experience with Google Cloud Platform (GCP). Prior experience with Highspot, Pendo, or MS Dynamics integrations. Other Details: This position will involve working on integration projects, with potential opportunities for remote collaboration. The role emphasizes hands-on development and strategic planning for future migrations.

🏢 Summary: Senior Software Developer role focused on designing and implementing complex API and microservice integrations in a banking environment using Azure and .NET. The position combines solution design with hands-on development, owning the full lifecycle of secure, low-latency integration solutions. The developer will lead Azure-based integrations, optimize Python transformations, and ensure high-quality, well-monitored applications. 🗂️ Requirements: 7+ years of hands-on experience with Azure development, Strong experience with .NET development, Experience building integration solutions using .NET and Azure, Experience with Azure Functions, APIM, Service Bus, App Insights, Working knowledge of Python for integration and transformation tasks, Experience writing and maintaining unit tests, Expertise in Application Insights monitoring and optimization, Experience designing integration patterns in CRM context 📃 Skills: Azure, AzureFunctions, ServiceBus, APIM, AppInsights, .NET, Python, Microservices, APIs, CRM, UnitTesting 🏢 Description: 🌍 Work mode: hybrid (preferably from Krakow or Warsaw): • People from Krakow and Warsaw - 6x per month in the office • People outside of Krakow and Warsaw - 1-2x per month in the office ⏰ Start : June/July 2026. 📝 Contract : B2B. ⏳ Duration : >12 months contracts. 📕 Project language : English. 💼 Industry : Banking. 📑 Workload: Full time. ⚙️ Recruitment process : 1h technical screening on zoom. 💻 Equipment : Work on emagine or your own equipment. We are looking for a Senior Software Developer who thrives at the intersection of technical design and hands-on execution . In this role, you will be the technical engine driving key initiatives for integration projects. Unlike a traditional architect role, your focus will be on Solution Design: creating the technical 'how-to' for complex integrations and then leading the end-to-end development . Main Responsibilities: Draft end-to-end technical designs for API solutions and microservice integration patterns. Own the full development cycle, ensuring secure, low-latency communication paths between backend systems and UI/UX layers. Manage the technical integration of platforms using Azure Functions and Service Bus. Fine-tune Python-based code mainly for specific transformations (e.g. Pendo-related) while having the agility to refactor logic as needed. Participate in design reviews and incorporate stakeholder feedback. Support discussions surrounding potential migrations to managed environments. Key Requirements: 7+ years of hands-on experience in Azure development (Functions, App Insights, APIM, and Service Bus ). Strong experience in .NET development (primary technology.) Experience in building integration solutions using . NET and Azure. Expertise in Python (basic/working knowledge required, mainly for integration/transformation tasks), with strong proficiency in .NET. A 'quality-first' mindset with extensive experience writing and maintaining unit tests. Deep expertise in using Application Insights for monitoring and optimizing live applications. Proven experience in designing and building integration patterns within a CRM context. Nice to Have: Exposure to Power Platform (optional) . Experience with Google Cloud Platform (GCP). Prior experience with Highspot, Pendo, or MS Dynamics integrations.

🏢 Summary: Senior Fullstack Developer role focused on modernizing banking systems through REST API development, microservices extraction, and system integrations. The position involves refactoring legacy applications and contributing to both microservice and monolith architectures in an international environment. Hybrid work model with B2B contract. 🗂️ Requirements: Minimum 6 years of experience in Java development, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience with REST API development, Experience with microservices architecture, Experience with Git, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Git, Angular, Reactive, DDD, Cucumber, SAFe 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) Summary: The role of a Senior Fullstack Developer focuses on modernizing systems, enhancing customer experience through API development, and ensuring seamless integration of various services. Main Responsibilities: Core duties include building REST API solutions and collaborating with teams to create optimal solutions. Building REST API solutions and integrations with other applications Refactoring legacy applications by extracting logic into microservices Collaborating with other developers, teams, and stakeholders to create optimal solutions Participating in the development and continuous improvement of services in both microservice and monolith architectures Key Requirements: Hands-on experience in Java development (at least 6 years preferred) Familiarity with reactive programming Working knowledge of Spring and Hibernate frameworks Experience with SQL, REST, Microservices, and GIT At least 2 years of experience with Angular Nice to Have: Familiarity with the DDD (Domain-Driven Design) approach Experience with Cucumber framework Previous work in an international team with English as the common language Exposure to SAFE Agile methodologies Other Details: Team Composition: International team. Communication Language: English.

🏢 Summary: Senior Fullstack Developer role focused on modernizing banking systems through REST API development, microservices extraction, and system integrations. The position involves enhancing customer-facing services and contributing to both microservice and monolith architectures in an international environment. Hybrid work model with B2B contract up to 170 PLN/h. 🗂️ Requirements: Minimum 6 years of commercial experience in Java development, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience building REST APIs, Experience with microservices architecture, Experience with GIT, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, GIT, Angular, Cucumber, DDD 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) Summary: The role of a Senior Fullstack Developer focuses on modernizing systems, enhancing customer experience through API development, and ensuring seamless integration of various services. Main Responsibilities: Core duties include building REST API solutions and collaborating with teams to create optimal solutions. Building REST API solutions and integrations with other applications Refactoring legacy applications by extracting logic into microservices Collaborating with other developers, teams, and stakeholders to create optimal solutions Participating in the development and continuous improvement of services in both microservice and monolith architectures Key Requirements: Hands-on experience in Java development (at least 6 years preferred) Familiarity with reactive programming Working knowledge of Spring and Hibernate frameworks Experience with SQL, REST, Microservices, and GIT At least 2 years of experience with Angular Nice to Have: Familiarity with the DDD (Domain-Driven Design) approach Experience with Cucumber framework Previous work in an international team with English as the common language Exposure to SAFE Agile methodologies Other Details: Team Composition: International team. Communication Language: English.

🏢 Summary: Senior Full Stack Developer role focused on building and maintaining cloud-native applications for the offshore wind industry using .NET Core, Angular, and AWS. The position involves developing scalable microservices and REST APIs, improving reliability and DevOps processes, and contributing to architecture and technical decisions. The role includes mentoring developers and collaborating with cross-functional teams in a hybrid work model. 🗂️ Requirements: Commercial experience with .NET Core, Commercial experience with C#, Commercial experience with Angular, Knowledge of object-oriented programming, Understanding of SOLID principles, Experience with clean code practices, Experience with software architecture, Experience building REST APIs, Experience with microservices, Experience with Docker, Experience with Kubernetes, Experience with Kafka or AMQ, Experience with SQL databases, Experience with NoSQL databases, Hands-on experience with AWS, Experience with EKS, Experience with cloud storage, Experience with AWS Secrets Manager, Experience with infrastructure automation, Experience with monitoring and production deployments, Experience with DevOps, Experience with CI/CD, Experience with release automation, Experience with test automation, Proficiency with Git, Experience with Azure DevOps or GitHub Actions, Communication and collaboration skills, Experience mentoring developers 📃 Skills: .NET, C#, Angular, AWS, EKS, REST, Microservices, Docker, Kubernetes, Kafka, AMQ, SQL, NoSQL, DevOps, CI/CD, Git, Azure, GitHub, OOP, SOLID 🏢 Description: We are looking for an experienced Senior Full Stack Developer to join a team developing a business-critical platform supporting the offshore wind industry . In this role, you will design, build, and maintain modern cloud-native applications while influencing technical direction and collaborating with cross-functional teams to deliver scalable, secure, and high-performing solutions. Your responsibilities: Design, develop, and maintain scalable applications using .NET Core, C#, and Angular . Build and enhance secure cloud-native solutions on AWS . Develop and maintain REST APIs , microservices, and distributed applications. Improve application reliability, performance, and operational excellence. Implement and maintain CI/CD pipelines and DevOps best practices. Design resilient integrations using messaging technologies such as Kafka . Participate in architecture discussions, code reviews, and technical decision-making. Mentor junior developers and promote engineering best practices across the team. We are looking for you, if you have: Proven commercial experience with .NET Core, C#, and Angular . Strong knowledge of object-oriented programming, SOLID principles , clean code, and software architecture. Experience building REST APIs , microservices, and working with Docker, Kubernetes, Kafka (or AMQ), and SQL/NoSQL databases . Solid hands-on experience with AWS , including EKS, cloud storage, AWS Secrets Manager, infrastructure automation, monitoring, and production deployments. Experience with DevOps , CI/CD, release automation, and test automation. Proficiency with Git , Azure DevOps, or GitHub Actions. Excellent communication and collaboration skills, with experience mentoring developers and working closely with technical and business stakeholders. Location: Hybrid (Warsaw) – 2–3 days per week from the office We offer: Participation in interesting and demanding projects. Flexible working hours. A great, non-corporate atmosphere. Possibility to work remote or hybrid (2 days per week from the office). Opportunities for development and promotion. Attractive package of benefits. We reserve the right to contact the selected candidates.

🏢 Summary: Senior Full-Stack Developer role focused on designing and delivering end-to-end cloud solutions on Azure, combining architectural design with hands-on implementation. The position involves building secure, scalable APIs and microservices, leading platform integrations, and optimizing backend and UI layers. The role requires close collaboration with architecture stakeholders and ownership from design to production. 🗂️ Requirements: AZ-204 certification (minimum), 7+ years hands-on experience with Azure, Strong experience with Azure Functions, APIM, Service Bus, Application Insights, Strong expertise in Python, Additional experience in Java or .NET, Experience designing APIs and microservices, Experience with CRM/API integrations, Strong focus on unit testing and code quality, Experience with monitoring and debugging using Application Insights 📃 Skills: Azure, AzureFunctions, APIM, ServiceBus, AppInsights, Python, Java, .NET, APIs, Microservices, CRM, UnitTesting 🏢 Description: Senior Full-Stack Developer Hybrid working model with 2 days per week from the Kraków office ⚠️ Certification Requirement (Important) Candidates should ideally hold Azure certifications — AZ-204 is the minimum requirement, while AZ-400 is strongly preferred. Role Overview We are looking for a Senior Full-Stack Developer who thrives at the intersection of technical design and hands-on execution. This is not a purely architectural role — you will be responsible for designing how things should work and then building them end-to-end. You will act as a proactive partner to a Lead Solutions Architect, preparing robust technical designs for approval and then taking full ownership of delivery. Key Responsibilities Solution Design (hands-on) – Create end-to-end technical designs for APIs and microservices, including integration patterns Full-Cycle Development – Build and deliver secure, scalable, low-latency solutions across backend and UI layers Platform Integration – Lead integrations of platforms such as Highspot and Pendo using Azure Functions and Service Bus Code Optimization – Refactor and optimize Python-based solutions, including externally provided code Design Collaboration – Present and refine solutions in collaboration with architecture stakeholders Future-State Planning – Support technical discussions around potential migration to GCP environments Technical Requirements 7+ years of hands-on experience with Azure (Functions, App Insights, APIM, Service Bus) Strong expertise in Python Additional solid experience in Java or .NET Strong focus on unit testing and code quality Experience with Application Insights for monitoring, debugging, and optimization Proven experience designing integrations in CRM/API environments Professional Attributes Ability to move from design to production quickly and effectively Proactive, problem-solving mindset Strong communication skills with both technical and non-technical stakeholders Comfortable working across different technologies (Azure, GCP, Python, etc.) Nice to Have Experience with Google Cloud Platform (GCP) Experience with Highspot, Pendo, or MS Dynamics integrations What We Offer Opportunity to work on complex, enterprise-scale integrations Real ownership: from design to production delivery Collaboration with experienced architects and global teams Exposure to modern cloud ecosystems (Azure + GCP) Flexible hybrid model Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Full Stack Developer role focused on building and enhancing scalable cloud-native applications using .NET and Angular in the renewable energy industry. The project involves developing secure and maintainable software solutions, improving production systems, and supporting DevOps and cloud deployment practices. The contract is long-term B2B with hybrid work in Warsaw and an English-speaking environment. 🗂️ Requirements: Extensive experience with .NET Core, Extensive experience with C#, Extensive experience with Angular, Proficiency with REST APIs, Proficiency with microservices, Experience with Docker, Experience with Kubernetes, Experience with AWS, Experience with EKS, Strong DevOps and CI automation practices, Object-oriented programming knowledge, Clean code practices, Ability to conduct code reviews, Mentoring skills, English communication skills 📃 Skills: .NET, C#, Angular, REST, Microservices, Docker, Kubernetes, AWS, EKS, DevOps, CI, SQL, NoSQL 🏢 Description: PROJECT INFORMATION: Industry: Renewable Energy Start: ASAP (flexible). Rate: 160-180 PLN/h Contract : B2B 12 months + prolongations. Hybrid: 2/3 days per week in Warsaw office. Location: remote/ Warsaw. Project language: English. Recruitment process: 1-2 interviews. Summary We are seeking an experienced Senior Full Stack Developer specializing in .NET and Angular to join our team. The ideal candidate will have a strong background in object-oriented programming, clean code practices, and cloud-native technologies. This role is critical for supporting the development of a comprehensive software suite that optimizes business decisions across various projects. Main Responsibilities Design and develop scalable, secure, and maintainable products aligned with architecture goals. Lead quality, security, and compliance efforts through best practices in software development. Enhance existing applications in production focusing on reliability and performance. Drive the use of cloud-native engineering practices for application deployment and management. Facilitate technical discussions, support code reviews, and mentor junior engineers. Key Requirements Extensive experience with .NET Core, C#, and Angular. Proficiency in REST APIs, microservices, Docker, Kubernetes, and messaging platforms. Experience with AWS cloud technologies, including Kubernetes (EKS) and cloud storage. Strong DevOps practices for automation and continuous integration. Effective communication skills and the ability to mentor and influence team direction. Nice to Have Knowledge of SQL or NoSQL databases. Experience with test automation and release management tools.

🏢 Summary: Senior Fullstack Developer role focused on modernizing a banking Corporate Netbank Administration system through REST API development and microservices extraction. The position involves refactoring legacy applications and enhancing integrations to improve customer experience. Work is delivered in hybrid model with strong emphasis on Java and modern frameworks. 🗂️ Requirements: Minimum 6 years of hands-on Java development experience, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience with REST APIs, Experience with microservices architecture, Experience with Git, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Git, Angular, Reactive 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) The Senior Fullstack Developer role is focused on modernizing the Corporate Netbank Administration (CNA) system, improving the customer experience through API development, and ensuring seamless integration across various services. The position requires strong expertise in Java development and solid experience with modern frameworks. RESPONSIBILITIES: Building REST API solutions and integrations with other applications. Refactoring legacy applications by extracting business logic into microservices. Collaborating with other developers, teams, and stakeholders to deliver optimal solutions. Participating in the development and continuous improvement of services in both microservice and monolith architectures. REQUIREMENTS: Hands-on experience in Java development (preferably at least 6 years). Familiarity with reactive programming . Working knowledge of Spring and Hibernate frameworks. Experience with SQL , REST , Microservices , and Git . At least 2 years of experience with Angular . NICE TO HAVE: Familiarity with the DDD (Domain-Driven Design) approach. Experience with the Cucumber framework. Previous experience working in an international team with English as the common language. Exposure to SAFe Agile methodologies.