Senior .NET Developer – Microservices

🏢 Summary: Fully remote .NET Developer role focused on designing and developing modern backend systems based on microservices architecture. The position involves building scalable REST APIs, implementing event-driven solutions, and deploying cloud-native applications on Microsoft Azure using containerized environments. The role also includes working with enterprise integrations, security standards, and database optimization within Agile teams. 🗂️ Requirements: Experience with .NET Core and .NET 8/9, Experience with ASP.NET Core, Experience in microservices architecture, Experience building RESTful APIs, Experience with Apache Kafka, Experience with Docker and Kubernetes, Experience with Microsoft Azure cloud services, Knowledge of OAuth 2.0 and OpenID Connect, Experience with SQL Server and Oracle, Knowledge of event-driven architecture, Experience with container orchestration and Helm, Understanding of SOLID principles and design patterns 📃 Skills: .NET, ASP.NET, Kafka, Docker, Kubernetes, OpenShift, Helm, Azure, SQL, Oracle, OAuth2, OIDC, TLS, AzureAD, REST 🏢 Description: Job Description We are looking for an experienced .NET Developer to design and develop modern backend solutions based on microservices architecture. The role is fully remote in Poland. Responsibilities: Design and develop microservices using .NET (Core / 8/9) and ASP.NET Core Build scalable RESTful APIs and backend services Implement event-driven architecture using Apache Kafka Deploy and maintain applications in containerized environments using Docker, Kubernetes, OpenShift, and Helm Design cloud-native solutions leveraging Microsoft Azure services Integrate applications with enterprise systems and external data sources Apply SOLID principles and modern design patterns Implement security standards including OAuth 2.0, OpenID Connect (OIDC), TLS, and Azure AD (Entra ID) Work with SQL Server and Oracle databases , including performance optimization Conduct code reviews and mentor junior developers Collaborate within Agile development teams Tech Stack: .NET Core / .NET 8/9 ASP.NET Core Apache Kafka Docker, Kubernetes, OpenShift, Helm Microsoft Azure (cloud-native services) SQL Server, Oracle OAuth 2.0, OpenID Connect, Azure AD (Entra ID) REST APIs, microservices architecture

🏢 Summary: Senior .NET Developer role focused on building and enhancing distributed microservices for digital banking systems in a European financial environment. The position involves designing scalable, high-quality solutions using C# and .NET, implementing asynchronous communication, and ensuring robust automated testing practices. Remote-first model with collaboration on complex financial platforms. 🗂️ Requirements: 5+ years of experience in C# and .NET development, Strong experience with microservices architecture, Knowledge of CQRS, REST, OOP, EventSourcing, Experience with RabbitMQ or Kafka, Experience with NoSQL and relational databases, Experience with automated testing (unit, integration, contract), Knowledge of DomainDrivenDesign principles, Understanding of BPMS workflows, Experience with Git, Good command of Polish, Legal right to work in the EU 📃 Skills: C#, .NET, Microservices, CQRS, REST, OOP, EventSourcing, RabbitMQ, Kafka, Git, NoSQL, SQL, Docker, Testcontainers, Pact, DomainDrivenDesign, BPMS 🏢 Description: Unleash innovation — revolutionize financial systems with expert .NET development! Wroclaw-based opportunity with remote work model (5 remote days per week). As a Senior .NET Developer , you will be working for our client, a leading financial organization committed to transforming the digital banking experience. You’ll contribute to building and enhancing distributed microservices that enable seamless financial operations across Europe, driving innovation and operational excellence. Your main responsibilities: Develop and maintain scalable, high-quality microservices using C# and .NET technologies following Domain-Driven Design principles. Design and implement asynchronous communication patterns with RabbitMQ or Kafka to ensure system robustness. Collaborate with cross-functional teams to create automated tests, including unit, integration, and contract tests, utilizing Docker, Testcontainers, and Pact. Optimize code for performance, scalability, and reliability, adhering to Clean Code standards. Implement RESTful APIs and work with NoSQL and relational databases for effective data management. Contribute to the continuous improvement of development processes and best practices. Engage proactively in team collaboration, sharing knowledge and solving complex technical challenges. You're ideal for this role if you have: Minimum of 5 years of experience in C# and .NET development in a senior role. Understanding of workflows in BPMS platforms. Strong knowledge of microservices architecture, CQRS, REST, OOP, and Event Sourcing. Practical experience with asynchronous messaging (RabbitMQ/Kafka), Git, NoSQL databases, and relational databases. Familiarity with automated testing frameworks, including unit, integration, and contract testing. Good understanding of Domain-Driven Design (DDD) principles and clean code practices. Excellent team collaboration skills and a responsible, engaged work attitude. It is a strong plus if you have: Experience with Polish language communication skills. Knowledge of automated testing tools and frameworks. Language Required for the role: Polish: Good command Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Oferta dotyczy roli Senior .NET Developera w sektorze bankowym, odpowiedzialnego za rozwój backendu, utrzymanie mikroserwisów oraz integracje systemowe. Praca obejmuje rozwój aplikacji w .NET Core, optymalizację baz danych oraz udział w procesach Agile. Model pracy zakłada obecność w biurze w Warszawie raz w tygodniu. 🗂️ Requirements: Minimum 6 lat doświadczenia w .NET Core/C#, Doświadczenie z SQL Server, Umiejętność tworzenia i optymalizacji zapytań SQL, Doświadczenie z systemami kolejkowymi, Znajomość mikroserwisów, Doświadczenie z integracjami backendowymi 📃 Skills: .NET, C#, SQL, SQLServer, CosmosDB, Azure, AzureServiceBus, EventHub, Kafka, MQ, ElasticSearch, MongoDB, Swagger, OpenAPI 🏢 Description: Informacje o projekcie: Branża: bankowość Stawka: do 180 zł/h netto + VAT, B2B Lokalizacja: Warszawa - raz w tygodniu praca z biura Język projektu: polski, angielski Rola Senior .NET Developera koncentruje się na projektowaniu i implementacji funkcji backendowych, utrzymaniu mikroserwisów oraz optymalizacji procesów bazodanowych. Obowiązki: Projektowanie i implementacja nowych funkcjonalności backendowych platformy w technologii .NET Core. Rozwój i utrzymanie mikroserwisów oraz integracja z zewnętrznymi partnerami. Implementacja i rozwój wyszukiwarek treści. Tworzenie i optymalizacja zapytań do baz danych (SQL Server, Cosmos DB). Udział w analizie wymagań, refinementach backlogu i planowaniu sprintów. Dbanie o jakość kodu poprzez testy jednostkowe, code review i zgodność z dobrymi praktykami. Wymagania: Minimym 6-letnie doświadczenie w programowaniu w .Net Core/C# Tworzenie i optymalizacja zapytań do baz danych (SQL Server). Praca z systemami kolejkowymi (preferowane Azure Service Bus, Event Hub, ale może być też Kafka lub MQ). Mile widziane: Doświadczenie w pracy z search engines, preferowany Azure AI Search, ale też inne, np. ElasticSearch. Zna Azure Cosmos DB lub inne bazy NoSQL (np. MongoDB) i wie, kiedy je stosować. Doświadczenie w tworzeniu aplikacji uruchamianych w chmurze Azure (AppServices, Functions, Storage, Application Insights/Log analytics). Tworzenie dokumentacji API (Swagger/OpenAPI). Doświadczenie w tworzeniu backendu dla aplikacji mobilnych.

🏢 Summary: Oferta dotyczy roli Senior .NET Developera w sektorze bankowym, odpowiedzialnej za rozwój backendu, utrzymanie mikroserwisów oraz optymalizację baz danych w środowisku Azure. Praca obejmuje integracje z zewnętrznymi systemami, rozwój wyszukiwarek treści oraz udział w procesach agile. Model współpracy B2B z pracą hybrydową w Warszawie. 🗂️ Requirements: Minimum 5 lat doświadczenia w .NET Core/C#, Doświadczenie w projektowaniu i implementacji backendu, Znajomość SQL Server i optymalizacji zapytań, Doświadczenie z systemami kolejkowymi, Umiejętność pracy z mikroserwisami, Znajomość procesów Agile i pracy sprintowej, Doświadczenie z testami jednostkowymi i code review 📃 Skills: .NET, C#, SQL, SQLServer, CosmosDB, Azure, AzureServiceBus, EventHub, Kafka, MQ, ElasticSearch, MongoDB, Swagger, OpenAPI, Microservices 🏢 Description: Informacje o projekcie: Branża: bankowość Stawka: do 180 zł/h netto + VAT, B2B Lokalizacja: Warszawa - raz w tygodniu praca z biura Język projektu: polski, angielski Rola Senior .NET Developera koncentruje się na projektowaniu i implementacji funkcji backendowych, utrzymaniu mikroserwisów oraz optymalizacji procesów bazodanowych. Obowiązki: Projektowanie i implementacja nowych funkcjonalności backendowych platformy w technologii .NET Core. Rozwój i utrzymanie mikroserwisów oraz integracja z zewnętrznymi partnerami. Implementacja i rozwój wyszukiwarek treści. Tworzenie i optymalizacja zapytań do baz danych (SQL Server, Cosmos DB). Udział w analizie wymagań, refinementach backlogu i planowaniu sprintów. Dbanie o jakość kodu poprzez testy jednostkowe, code review i zgodność z dobrymi praktykami. Wymagania: Minimym 5-letnie doświadczenie w programowaniu w .Net Core/C# Tworzenie i optymalizacja zapytań do baz danych (SQL Server). Praca z systemami kolejkowymi (preferowane Azure Service Bus, Event Hub, ale może być też Kafka lub MQ). Mile widziane: Doświadczenie w pracy z search engines, preferowany Azure AI Search, ale też inne, np. ElasticSearch. Zna Azure Cosmos DB lub inne bazy NoSQL (np. MongoDB) i wie, kiedy je stosować. Doświadczenie w tworzeniu aplikacji uruchamianych w chmurze Azure (AppServices, Functions, Storage, Application Insights/Log analytics). Tworzenie dokumentacji API (Swagger/OpenAPI). Doświadczenie w tworzeniu backendu dla aplikacji mobilnych.

🏢 Summary: B2B opportunity for an experienced .NET Back-End Developer to build modern, scalable cloud-based solutions using C# and Azure. The role focuses on designing high-performance services, working with CosmosDB, and collaborating in an Agile team with exposure to AI-assisted development tools. This is a fully remote position with competitive hourly rates and long-term cooperation. 🗂️ Requirements: 5+ years of professional experience in .NET development, Strong experience with C#, Proven experience with Azure services, Experience with CosmosDB, Experience with TypeScript or JavaScript, Bachelor’s degree in Computer Science or related field, Ability to align with US-based team working hours, English language proficiency 📃 Skills: .NET, C#, Azure, CosmosDB, TypeScript, JavaScript, AI, Playwright, Selenium, Drupal 🏢 Description: For our client from the technology and industrial solutions sector, we are looking for a .NET Back-End Developer to join a talented development team working on modern, scalable software solutions. Responsibilities: Design, develop, and maintain high-performance back-end services using .NET and C#. Work extensively with Azure cloud services and CosmosDB to build scalable and resilient solutions. Collaborate with front-end developers, product owners, and other team members to integrate back-end services. Participate in code reviews, architectural discussions, sprint planning, and other Agile ceremonies. Use modern development tools and practices to improve productivity, code quality, and maintainability. Explore and apply AI-assisted tools where appropriate to support development, documentation, troubleshooting, and workflow efficiency. Contribute to improving development processes, engineering practices, and team knowledge sharing. Be a proactive problem-solver and continuous learner, staying current with relevant technologies and industry trends. Requirements: Application Development Experience: 5+ years of professional experience in .NET development. Cloud Development Expertise: Proven experience with C#, Azure services, and CosmosDB. Scripting / Front-End Knowledge: Experience with TypeScript preferred, or JavaScript. AI Tool Familiarity: Interest in or hands-on experience using AI tools to support software development, productivity, documentation, research, or troubleshooting. Educational Background: Bachelor’s degree in Computer Science or a related field. Flexibility: Ability to align somewhat with US-based team working hours. Communication: English language proficiency. Stack: Cloud: Azure, CosmosDB Back-End: .NET, C# Scripting / Tooling: TypeScript preferred, JavaScript acceptable Productivity / AI Tools: Familiarity with AI-assisted development or productivity tools is a plus Nice to have: Domain Knowledge: Background in Electrical Engineering or a related technical field. Background or interest in analog and mixed-signal hardware design. Knowledge of hardware or system simulation concepts. CMS Knowledge: Familiarity with Drupal. Test Automation Exposure: Familiarity with tools like Playwright or Selenium. Quality Mindset: Prior QA experience or understanding of QA methodologies is welcome. Offer: Cooperation based on a B2B contract and rate: 140-170 PLN/hour 100% remote work The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, Multisport card). About Speedapp At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch.

🏢 Summary: Senior .NET Developer role focused on building and enhancing a custom industrial application supporting end-to-end production and logistics processes. The position involves backend development in .NET, frontend development with Angular, and designing microservices-based solutions deployed in AWS. The project emphasizes scalability, traceability, and continuous product improvement. 🗂️ Requirements: Minimum 5 years of commercial experience as a .NET Developer, Strong hands-on experience with .NET in backend development, Practical experience with Angular in frontend development, Experience with microservices-based architecture, Experience with AWS cloud services 📃 Skills: .NET, Angular, AWS, Microservices 🏢 Description: We are looking for a Senior .NET Developer to join a long‑term product development project in the industrial and manufacturing domain. The role focuses on building and maintaining a custom‑built application that supports end‑to‑end production and logistics processes for industrial clients. The project uses modern technologies and follows an innovation‑driven approach, with strong emphasis on process traceability, scalability, and continuous improvement. Your tasks Develop and maintain backend solutions using .NET for a custom industrial application Implement new product functionalities according to business and process requirements Build and extend frontend features using Angular Design and develop solutions based on a microservices architecture Develop, deploy, and maintain solutions in an AWS cloud environment Requirements Minimum 5 years of commercial experience as a .NET Developer Strong hands‑on experience with .NET in backend development Practical experience with Angular in frontend development Experience working with microservices‑based architectures Experience working with AWS cloud services Fluency in English Residing in Poland required

🏢 Summary: Senior .NET Developer role focused on building and enhancing scalable, cloud-native enterprise solutions using .NET 6+ and Microsoft Azure. The position involves designing modern APIs, contributing to microservices architecture, and ensuring high availability, security, and reliability in production systems. The role is hybrid in Krakow and emphasizes DevOps, automation, and engineering best practices. 🗂️ Requirements: 7+ years professional software development experience, Strong hands-on experience with C#, Strong experience with .NET Core / .NET 6+, Proven experience building modern APIs and enterprise applications, Strong experience with Microsoft Azure services (AKS, Azure Containers, Azure Web Apps, Azure Functions, Azure Service Bus, Azure Storage Accounts, Azure Key Vault), Strong experience with Containers and Kubernetes, Solid understanding of Microservices architecture, Strong knowledge of Object-Oriented Programming and SOLID principles, Understanding of Multi-threading and concurrent programming, Experience with Cloud Architecture and Engineering on Azure, Experience working in Agile environments, Experience with TDD and DevOps practices, Strong analytical and troubleshooting skills, Excellent verbal and written communication skills 📃 Skills: C#, .NET, ASP.NET, Azure, AKS, Kubernetes, Docker, Microservices, REST, API, CI/CD, DevOps, TDD, OOP, SOLID, Multithreading, AzureFunctions, AzureServiceBus, AzureStorage, AzureKeyVault, EventGrid, ContainerApps 🏢 Description: Location: Krakow, hybrid 3 days/week About the Role We are looking for an experienced and passionate Senior .NET Developer with strong Azure expertise to join our engineering team. In this role, you will design, develop, and enhance scalable digital products and technology services used by clients and internal teams worldwide. You will work in a modern cloud-native environment, contribute to high-impact projects, and collaborate with cross-functional teams to build secure, reliable, and highly available enterprise solutions. Key Responsibilities Design, develop, and improve enterprise-grade digital products and technology services Analyze business and user requirements to deliver scalable and efficient technical solutions Develop modern APIs and backend services using .NET 6+ and Azure cloud technologies Apply software engineering best practices including automated testing, CI/CD, and DevOps methodologies Ensure quality, security, reliability, and compliance across all delivered solutions Build observability into applications, monitor production systems, troubleshoot incidents, and resolve root causes Contribute to cloud-native and microservices-based architecture initiatives Collaborate closely with product owners, architects, and engineering teams to deliver business value Advocate for client and user needs while driving technical excellence Share knowledge with peers, mentor team members, and contribute to engineering culture and hiring activities Required Skills & Experience 7+ years of professional software development experience Strong hands-on experience with C# and .NET Core / .NET 6+ Proven experience building modern APIs and enterprise applications using .NET technologies Strong experience with Microsoft Azure services including: AKS (Azure Kubernetes Service) Azure Containers Azure Web Apps Azure Functions Azure Service Bus Azure Storage Accounts Azure Key Vault Strong experience with Containers and Kubernetes Solid understanding of Microservices and Event-Driven Architecture Strong knowledge of Object-Oriented Programming, Design Patterns, and SOLID principles Good understanding of Multi-threading and concurrent programming Experience with Cloud Architecture and Engineering on Azure platforms Experience with: Azure App Services Container Apps Event Grid Experience working in Agile environments using TDD and DevOps practices Passion for Software Craftsmanship, Clean Code, and engineering best practices Strong analytical, troubleshooting, and problem-solving skills Excellent verbal and written communication skills Nice to Have Experience implementing: Service-Oriented / Microservice Architectures Event-Based Architectures Loosely Coupled Systems Reusable Enterprise Components Experience working with distributed systems and high-scale applications Exposure to observability and monitoring tools

🏢 Summary: Mid-Level Fullstack .NET Developer role focused on building and maintaining scalable web applications within a microservices architecture. The position involves developing robust REST APIs, implementing automated testing, and contributing to CI/CD processes in a hybrid work model. You will work with modern .NET and Angular technologies to deliver high-quality, enterprise-grade systems. 🗂️ Requirements: Minimum 3 years of full stack development experience, Strong knowledge of C# and .NET Core, Practical experience with Angular, Experience with REST API development, Experience with microservice architecture, Experience with automated testing (unit, E2E), Knowledge of SOLID principles and design patterns, Experience with Docker and Kubernetes, Experience with MSSQL and PostgreSQL, Experience with CI/CD pipelines and related tools, Familiarity with JIRA, TeamCity, Jenkins, git, Communicative Polish, Legal right to work in the EU 📃 Skills: C#, .NET, Angular, REST, Microservices, Docker, Kubernetes, MSSQL, PostgreSQL, Git, Jenkins, TeamCity, JIRA, CI/CD, SOLID 🏢 Description: Ignite the Future of Digital Innovation — Shape Powerful, Scalable Systems with Cutting-Edge Technologies! Warszawa-based opportunity with hybrid work model (up to 4 days remote per week). As a Mid-Level Fullstack .NET Developer , you will be working for our client, a forward-thinking leader in the software industry dedicated to delivering innovative solutions. Your expertise will contribute to designing and implementing robust, microservice-based systems, empowering businesses to thrive in a digital landscape. Join us and be part of a dynamic environment where your skills fuel impactful projects and career growth. Your main responsibilities: Develop and maintain scalable web applications using .NET Core, C#, and Angular. Write automated unit and E2E tests to ensure high-quality deliverables. Apply SOLID principles, design patterns, IoC, and DI to create maintainable code. Design and implement REST APIs within microservice architecture. Collaborate with cross-functional teams utilizing JIRA, TeamCity, Jenkins, and version control systems like git/bitbucket. Support and optimize database interactions with MSSQL and PostgreSQL. Participate in continuous integration and delivery processes (SSDLC, CI/CD tools). You're ideal for this role if you have: Minimum of 3 years of professional experience in full stack development. Practical knowledge of C#, .NET Core, Angular. Experience with Docker and Kubernetes. Experience with automated testing, SOLID, design patterns, and REST API development. Familiarity with MS SQL, PostgreSQL, and microservice architecture. Knowledge of SSDLC, CI/CD pipelines, and tools such as JIRA, TeamCity, Jenkins, and git. It is a strong plus if you have: (optional) Certifications in cloud technologies or microservice architectures. Language Required for the role: Polish (Communicative level) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV in English or Polish, along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Backend Engineer role focused on building and scaling a cloud-based SaaS platform using modern .NET services and REST APIs. The position involves designing distributed systems, improving reliability and observability, and working with cloud and container environments. You will contribute to technical decisions and engineering best practices within a collaborative team. 🗂️ Requirements: 5+ years backend development experience, Experience with SaaS and web applications, Strong knowledge of C#, Strong knowledge of modern .NET/.NET Core, Solid computer science fundamentals, Experience with distributed systems design, Experience with cloud platforms, Experience with containers and orchestration, Understanding of concurrency and performance, Knowledge of authentication and authorization mechanisms 📃 Skills: C#, .NET, .NETCore, REST, Azure, AWS, GCP, Kubernetes, Kafka, RabbitMQ, SQS, Docker, SQL, HTML, CSS, JavaScript 🏢 Description: We’re hiring a Senior Backend Engineer to help build and scale a cloud-based SaaS platform. You’ll work on modern .NET services and APIs, improve reliability and observability, and contribute to technical decisions as part of a collaborative engineering team. Responsibilities: Build and maintain backend services and REST APIs in C# / .NET (.NET Core). Design scalable solutions for distributed systems (async workflows, messaging, integrations). Work with cloud services (Azure/AWS/GCP) and container environments (e.g. Kubernetes). Strengthen system reliability with logging, metrics, tracing, and monitoring. Support secure access patterns: authentication/authorization, API gateway concepts. Contribute through code reviews, good engineering practices, and automation. Requirements: 5+ years of backend development experience, including SaaS and web applications. Strong knowledge of C# and modern .NET + solid CS fundamentals. Familiarity with containers/orchestration and cloud-native approaches. Experience with some of: Kafka/RabbitMQ/SQS, workflow orchestration, job scheduling, search. Good understanding of concurrency and performance. Strong communication skills; Agile/Scrum is a plus. Bonus: basic front-end knowledge (HTML/CSS/JS).

🏢 Summary: Mid-Level Fullstack .NET Developer role focused on building and maintaining scalable, microservice-based web applications in the online banking domain. The position involves developing REST APIs, implementing automated testing, and contributing to CI/CD processes within a hybrid work model. You will work with modern .NET and Angular technologies to deliver high-quality, robust systems. 🗂️ Requirements: Minimum 3 years of full stack development experience, Strong knowledge of C# and .NET Core, Practical experience with Angular, Experience with REST API development, Experience with microservice architecture, Hands-on experience with Docker and Kubernetes, Experience with automated testing (unit and E2E), Knowledge of SOLID principles and design patterns, Experience with MS SQL and PostgreSQL, Familiarity with CI/CD pipelines and SSDLC, Experience with Git-based version control, Good command of Polish, Legal right to work in the EU 📃 Skills: C#, .NET, Angular, REST, Microservices, Docker, Kubernetes, MSSQL, PostgreSQL, Git, Jenkins, TeamCity, JIRA, CI/CD, SSDLC 🏢 Description: Ignite the future of digital innovation — shape powerful, scalable systems with cutting-edge technologies! Warsaw-based opportunity with hybrid work model (2 days in the office / month). As a Mid-Level Fullstack .NET Developer , you will be working for our client, a leader in the online banking industry dedicated to delivering innovative solutions. Your expertise will contribute to designing and implementing robust, microservice-based systems, empowering businesses to thrive in a digital landscape. Join us and be part of a dynamic environment where your skills fuel impactful projects and career growth. Your main responsibilities: Develop and maintain scalable web applications using .NET Core, C#, and Angular. Write automated unit and E2E tests to ensure high-quality deliverables. Apply SOLID principles, design patterns, IoC, and DI to create maintainable code. Design and implement REST APIs within microservice architecture. Collaborate with cross-functional teams utilizing JIRA, TeamCity, Jenkins, and version control systems like git/bitbucket. Support and optimize database interactions with MSSQL and PostgreSQL. Participate in continuous integration and delivery processes (SSDLC, CI/CD tools). You're ideal for this role if you have: Minimum of 3 years of professional experience in full stack development. Practical knowledge of C#, .NET Core, Angular. Hands-on experience with Docker and Kubernetes. Experience with automated testing, SOLID principles, design patterns, and REST API development. Familiarity with MS SQL, PostgreSQL, and microservice architecture. Knowledge of SSDLC, CI/CD pipelines, and tools such as JIRA, TeamCity, Jenkins, and git. It is a strong plus if you have: (optional) Experience with cloud platforms like Azure or AWS. Certifications in microservices or cloud technologies. Language required for the role: Good command of Polish. Eligibility to work in Europe: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.