.NET Fullstack Developer (k/m)

🏢 Summary: Oferta dla doświadczonego Programisty .NET obejmuje rozwój nowoczesnych aplikacji webowych, API i usług integracyjnych dla sektora publicznego. Rola zakłada projektowanie rozwiązań bazodanowych, pracę w architekturze mikroserwisowej oraz współpracę w środowisku Agile/Scrum. Firma oferuje elastyczne formy pracy, rozbudowany pakiet benefitów oraz możliwości rozwoju i certyfikacji. 🗂️ Requirements: Minimum 5 lat doświadczenia komercyjnego jako Programista .NET, Bardzo dobra znajomość C#, Znajomość .NET Framework oraz .NET/.NET Core, Doświadczenie w ASP.NET Core, Doświadczenie w ASP.NET MVC, Doświadczenie w Web API, Znajomość Razor lub Blazor, Znajomość relacyjnych baz danych, Znajomość SQL, Doświadczenie z Git, Doświadczenie z Docker, Doświadczenie z Kubernetes, Doświadczenie w architekturze mikroserwisowej, Znajomość wzorców projektowych, Znajomość SOLID, Clean Code, DRY, KISS, Praca w Agile/Scrum, Znajomość Azure DevOps, Znajomość Jira, Znajomość Confluence, Znajomość CI/CD 📃 Skills: C#, .NET, ASP.NET, MVC, WebAPI, Razor, Blazor, SQL, MSSQL, PostgreSQL, MySQL, DB2, Git, Docker, Kubernetes, Microservices, SOLID, CleanCode, Agile, Scrum, AzureDevOps, Jira, Confluence, CI/CD 🏢 Description: Dołącz do zespołu realizującego zaawansowane projekty IT dla klienta z sektora public. Poszukujemy doświadczonego Programisty .NET, który będzie odpowiedzialny za rozwój nowoczesnych aplikacji oraz usług integracyjnych. Zakres obowiązków - Projektowanie i implementacja aplikacji oraz komponentów w technologii .NET - Rozwój i utrzymanie usług integracyjnych oraz interfejsów API - Projektowanie i optymalizacja rozwiązań bazodanowych -  Analiza wymagań oraz projektowanie nowych funkcjonalności - Współpraca z zespołem projektowym w metodyce Agile/Scrum - Udział w procesie zapewnienia jakości oprogramowania -Tworzenie oraz aktualizacja dokumentacji technicznej Wymagania - Minimum 5 lat komercyjnego doświadczenia jako Programista .NET oraz bardzo dobra znajomość C#, .NET Framework i .NET/.NET Core. - Praktyczne doświadczenie w tworzeniu aplikacji webowych i API z wykorzystaniem ASP.NET Core, ASP.NET MVC, Web API, Razor lub Blazor. -  Znajomość relacyjnych baz danych (MS SQL Server, PostgreSQL, MySQL lub DB2), SQL oraz pracy z Git, Docker i Kubernetes. - Doświadczenie w projektowaniu rozwiązań opartych o architekturę mikroserwisową, wzorce projektowe oraz dobre praktyki programistyczne (SOLID, Clean Code, DRY, KISS). - Umiejętność pracy w metodykach Agile/Scrum oraz znajomość narzędzi takich jak Azure DevOps, Jira, Confluence i rozwiązań CI/CD. Oferujemy Elastyczność- elastyczne godziny pracy i opcje pracy zdalnej/hybrydowej dostosowane do Twojego stylu życia i lokalizacji Pakiet benefitów- Udemy for Business, prywatna opieka medyczna, karta Multisport, pakiet weterynaryjny, lekcje językowe, bony zakupowe Rozwój kariery- dostęp do szkoleń i certyfikacji, współpraca z globalnymi partnerami IT (Microsoft, AWS, Snowflake, Salesforce) Angażująca społeczność- udział w wydarzeniach team buildingowych, hackathonach i inicjatywach CSR Firmowe tradycje- coroczne wydarzenie integracyjne na Mazurach

🏢 Summary: The role involves developing and maintaining applications within the .NET ecosystem, integrating them with cloud platforms, and supporting DevOps automation processes. The position focuses on building scalable solutions, managing CI/CD pipelines, and implementing Infrastructure as Code in Azure and GCP environments. The developer will collaborate with cross-functional teams to enhance data integration and deployment workflows. 🗂️ Requirements: Strong experience with C#, Strong experience with .NET framework or .NET ecosystem, Experience with Python, Experience with Azure, Experience with GCP, Knowledge of GitHub, Knowledge of GitHub Actions, Knowledge of Azure DevOps, Experience with CI/CD pipelines, Experience with Terraform, Experience with Infrastructure as Code, Fluency in Polish, Fluency in English 📃 Skills: C#, .NET, Python, Azure, GCP, GitHub, GitHubActions, AzureDevOps, CI/CD, Terraform, SQL, Spotfire, Signals 🏢 Description: Role Overview We are looking for a C#/.NET Developer with experience in cloud environments and DevOps practices to join our team. In this role, you will be responsible for developing and maintaining applications built on the .NET ecosystem, integrating them with cloud services, and supporting automation and deployment processes. You will work closely with cross-functional teams to build scalable solutions, integrate data and analytics tools, and improve development workflows through modern DevOps practices. Key Responsibilities Design, develop, and maintain applications using C# and .NET technologies . Support development and automation tasks using Python where appropriate. Work with cloud platforms (Azure and GCP) to deploy and manage applications and services. Implement and maintain DevOps processes , including CI/CD pipelines using GitHub, GitHub Actions, and Azure DevOps (ADO) . Manage infrastructure and environments using Infrastructure as Code tools such as Terraform . Integrate applications with analytics and visualization tools such as Spotfire . Work with Signals .NET framework–based systems to support data integration and application functionality. Collaborate with engineering, data, and DevOps teams to ensure reliable and scalable solutions. Required Skills Strong experience with C# and .NET framework / .NET ecosystem . Experience with Python for scripting, automation, or data-related tasks. Knowledge of DevOps tools and practices , including GitHub, GitHub Actions, and Azure DevOps (ADO) . Experience working with cloud platforms such as Microsoft Azure and Google Cloud Platform (GCP) . Familiarity with Infrastructure as Code , particularly Terraform . Experience working with SQL or data-driven applications is a plus. Good understanding of CI/CD pipelines and automated deployment processes . Polish and English must have Nice to Have Basic knowledge of Spotfire or other analytics/visualization tools. Experience with Signals platform and .NET-based integrations . Experience working in Agile development environments .

🏢 Summary: The offer is for a Senior .NET Developer with 5+ years of experience to design, develop, and maintain scalable backend applications using modern .NET technologies. The role focuses on building high-quality APIs, contributing to architectural decisions, and ensuring application reliability in cloud-based environments. It involves close collaboration with cross-functional teams and strong engagement in testing, CI/CD, and production support. 🗂️ Requirements: Minimum 5 years of experience with .NET development, Strong experience with C# and .NET Core, Solid understanding of REST APIs, Experience with Entity Framework Core, Strong knowledge of SQL, Experience with cloud platforms (Azure or AWS), Experience with CI/CD pipelines, Experience with Git version control, Experience with unit and integration testing, Experience with message broker systems, Familiarity with agile development practices 📃 Skills: C#, .NET, .NETCore, REST, EntityFramework, SQL, Azure, AWS, CI/CD, Git, UnitTesting, IntegrationTesting, MessageBroker, Angular, Docker, Kubernetes, Microservices 🏢 Description: Summary: We’re looking for a highly skilled .NET Developer with a minimum of 5 years of experience. This role focuses on solving complex problems, building high-quality software, and contributing to a collaborative engineering culture. The candidate should be passionate about clean architecture, modern .NET development, and delivering impactful solutions. Responsibilities: Analyze, design, develop, and maintain applications using .NET / .NET Core. Build scalable backend services (APIs). Collaborate with cross-functional teams (Business, Dev, Infra, etc.). Participate in code reviews to elevate engineering standards. Contribute to architectural decisions and technical roadmaps. Provide business support and monitor applications (level 2 support, incident resolution, and troubleshooting). Key Requirements: Strong experience with C# and .NET Core. Solid understanding of REST APIs, Entity Framework Core, and SQL. Familiarity with cloud platforms (Azure or AWS). Experience with CI/CD pipelines and version control (Git). Strong testing culture: unit tests, integration tests, and production validation. Familiarity with agile development practices. A mindset focused on quality, performance, and maintainability. Experience with a message broker. Nice to Have: Knowledge of microservices architecture. Experience with front-end frameworks (Angular). Background in distributed systems or high-availability environments. Knowledge of Docker & Kubernetes. Experience with Azure functions. Other Details: This position allows for flexibility and may accommodate remote work arrangements. Candidates should be prepared for collaborative team engagements with a focus on delivering high-quality software solutions.

🏢 Summary: The offer is for a .NET Developer responsible for designing, developing, and maintaining scalable backend applications and APIs within a collaborative engineering environment. The role focuses on high-quality software delivery, architectural contributions, and cloud-based solutions. It also involves application monitoring, incident resolution, and continuous improvement of engineering standards. 🗂️ Requirements: Strong experience with CSharp and DotNetCore, Experience building REST APIs, Proficiency with EntityFrameworkCore and SQL, Experience with Azure or AWS, Experience with CICD pipelines, Proficiency with Git, Experience with unit and integration testing, Knowledge of Agile methodologies, Experience with message brokers such as AzureServiceBus or RabbitMQ 📃 Skills: CSharp, DotNet, DotNetCore, REST, EntityFrameworkCore, SQL, Azure, AWS, CICD, Git, UnitTesting, IntegrationTesting, AzureServiceBus, RabbitMQ, Microservices, Angular, Docker, Kubernetes, AzureFunctions, Agile 🏢 Description: Summary: A highly skilled .NET Developer is needed to solve complex problems and enhance software quality within a collaborative engineering culture. Responsibilities: * Analyze, design, develop, and maintain applications using .NET / .NET Core * Build scalable backend services (APIs) * Collaborate with cross-functional teams (Business, Development, Infrastructure…) * Participate in code reviews and elevate engineering standards * Contribute to architectural decisions and technical roadmaps * Provide business support by monitoring applications and troubleshooting incidents Must Haves: * Strong experience with C# and .NET Core * Solid understanding of REST APIs, Entity Framework Core, and SQL * Familiarity with cloud platforms (Azure or AWS) * Experience with CI/CD pipelines and version control (Git) * Strong testing culture: unit tests, integration tests, and production validation * Knowledge of Agile development practices * Mindset focused on quality, performance, and maintainability * Experience with a message broker (Azure Service Bus or RabbitMQ) * Fluent in English; proficiency in French or Dutch is a plus Nice to Haves: * Knowledge of microservices architecture * Experience with front-end frameworks (Angular) * Background in distributed systems or high-availability environments * Knowledge of Docker & Kubernetes * Experience with Azure Functions Other Details: * Location: [Not specified] * Team Structure: Cross-functional collaboration is emphasized * Reporting Lines: [Not specified] * Project Context: Development and maintenance of impactful software solutions

🏢 Summary: Long-term role for an experienced .NET Developer focused on building and maintaining web applications using .NET 6+ and ASP.NET Core. The position involves developing REST APIs, working with relational databases, writing unit tests, and contributing to architecture and code quality. Collaboration with frontend, QA, and project teams is part of daily work. 🗂️ Requirements: Minimum 5 years of experience with C# and .NET 6+, Experience with ASP.NET Core (MVC, Web API), Experience with Entity Framework or EF Core, Experience building and integrating REST APIs, Experience with SQL and relational databases (MS SQL or PostgreSQL), Experience with Git, Experience with Visual Studio or Rider, Ability to write unit tests (xUnit or NUnit) 📃 Skills: C#, .NET, ASP.NET, MVC, WebAPI, EntityFramework, EFCore, REST, JSON, SQL, MSSQL, PostgreSQL, Git, VisualStudio, Rider, xUnit, NUnit 🏢 Description: O projekcie Poszukujemy doświadczonego .NET Developera do długofalowej współpracy przy aplikacjach webowych – zarówno tych rozwijanych od podstaw, jak i przy rozbudowie istniejących systemów. Twój zakres obowiązków Rozwój i utrzymanie aplikacji webowych w oparciu o .NET 6+ Tworzenie i integracja REST API Praca z relacyjnymi bazami danych (MS SQL lub PostgreSQL) Pisanie testów jednostkowych i utrzymanie wysokiej jakości kodu Współpraca z frontendem, QA i zespołem projektowym Udział w code review i wdrażanie dobrych praktyk Współpraca przy projektowaniu architektury (w zależności od projektu) Tworzenie lub uzupełnianie dokumentacji technicznej – tam, gdzie to potrzebne Nasze wymagania minimum 5 lat doświadczenia z C# (.NET 6 lub nowszy) ASP.NET Core (MVC / Web API) Entity Framework lub EF Core REST API, JSON SQL (MS SQL / PostgreSQL – wystarczy znajomość jednego) Git Visual Studio lub Rider Testy jednostkowe (np. xUnit, NUnit) Mile widziane Docker (lokalne środowiska, podstawy konteneryzacji) Azure (np. App Services, Blob Storage, Functions) Doświadczenie z SignalR lub kolejkami (np. RabbitMQ, Kafka) Znajomość HTML, CSS, JavaScript (na poziomie integracyjnym)

🏢 Summary: Long-term project for a Senior/Expert .NET Developer focused on backend and API development within enterprise banking systems. The role involves developing and optimizing software solutions, working with legacy code, and providing technical leadership and mentorship. The position emphasizes high-quality standards, collaboration, and code excellence in a complex financial environment. 🗂️ Requirements: Strong knowledge of C#, Strong knowledge of .NET framework, Expertise in ASP.NET Core, Experience in API development, Experience with SQL Server design and development, Ability to analyze and troubleshoot legacy code, Solid understanding of OOP principles, Knowledge of software engineering best practices 📃 Skills: C#, .NET, ASP.NET, SQL, T-SQL, Git, Jenkins, Angular, HTML, CSS, JavaScript, Visual Studio, Postman, Swagger, Bitbucket, Bootstrap, SQL Server 🏢 Description: We’re looking for an Expert/Senior .NET Developer to join a long-term project for a leading client in the banking industry. Project Type: Enterprise banking systems – backend & API development, code optimization, and mentorship Responsibilities: Design, develop, and maintain software solutions Analyze, refactor, and troubleshoot legacy code Conduct code reviews and uphold high-quality standards Collaborate with QA and Business Analysts Mentor junior developers and provide technical leadership Must-Have Experience: Strong knowledge of C# and the .NET framework Expertise in ASP.NET Core and API development Experience with SQL Server (design & development) Ability to work with and troubleshoot legacy code Solid understanding of OOP and software engineering best practices Nice-to-Have: Familiarity with Git, Jenkins, and testing frameworks Understanding of cloud concepts & web security best practices Knowledge of frontend technologies (Angular, HTML, CSS, JavaScript) Tools & Tech Stack:Visual Studio, Postman, Swagger, Bitbucket, SQL Server Management Studio, T-SQL, Bootstrap (or similar)

🏢 Summary: The offer is for a .NET Developer responsible for developing and maintaining .NET Core applications and REST APIs in a cloud-based environment. The role involves managing CI/CD pipelines, ensuring high software quality through testing, and working within Agile teams. It is suitable for candidates with 2–3 years of experience seeking remote or hybrid work. 🗂️ Requirements: 2–3 years of experience in C# and .NET Core development, Experience in developing and maintaining REST APIs, Proficiency with Entity Framework Core, Experience with Azure and basic AWS services, Experience with Azure DevOps and CI/CD pipelines, Knowledge of Git and automated build processes, Hands-on experience with Agile and Scrum methodologies, Experience with unit and integration testing 📃 Skills: C#, .NET, Azure, AWS, REST, EntityFrameworkCore, AzureDevOps, Git, CICD, Agile, Scrum, UnitTesting, IntegrationTesting 🏢 Description: Motivated .NET developer with 2–3 years of experience in developing and maintaining C# / .NET Core applications. Experienced with cloud platforms (Azure and AWS), CI/CD pipelines (Azure DevOps), and backend services, with a strong understanding of REST APIs and Agile practices. Solid testing culture with unit, integration, and production validation to ensure high-quality and reliable software. Main Responsibilities: Developing and maintaining .NET Core applications Designing and implementing REST APIs Managing CI/CD pipelines using Azure DevOps Collaborating within Agile teams Ensuring software quality through comprehensive testing practices Participating in code reviews and pair programming Key Requirements: C# / .NET Core development experience Proficiency with REST APIs and Entity Framework Core Experience in Azure and basic AWS services Familiarity with Azure DevOps, Git, and automated build processes Hands-on experience in Agile and Scrum methodologies Knowledge of testing practices: unit testing and integration testing Nice to Have: Knowledge of microservices architecture Basic front-end knowledge: Angular / React Experience with Docker and Kubernetes Understanding of distributed systems and high-availability environments Other Details: Immediate availability is preferred, but negotiation is possible. This role is suitable for remote or hybrid working arrangements.

🏢 Summary: The offer is for a .NET Developer to design, develop, and maintain modern web applications and RESTful APIs using Microsoft technologies. The role focuses on ASP.NET Core development, API-first design, Optimizely CMS customization, and ensuring performance, security, and scalability. It also involves contributing to CI/CD processes and reusable component development. 🗂️ Requirements: Strong experience with C# and .NET, Hands-on experience with ASP.NET Core MVC, Experience with Web APIs, Experience designing and consuming REST APIs, Knowledge of OpenAPI/Swagger, Experience with NuGet package management, Experience with Optimizely CMS, Knowledge of JavaScript, Knowledge of TypeScript, Knowledge of HTML, Knowledge of CSS, Experience with Git 📃 Skills: C#, .NET, ASP.NET, MVC, WebAPI, REST, OpenAPI, Swagger, NuGet, Optimizely, Episerver, JavaScript, TypeScript, HTML, CSS, Git, Azure, Docker, React, Angular 🏢 Description: Summary: We are looking for a skilled .NET Developer to support our engineering team in the development and maintenance of modern web applications and APIs. This role is vital for enhancing digital experiences, leveraging Microsoft technologies, and ensuring optimal performance of our systems. Responsibilities: Design, develop, test, and maintain applications using .NET and ASP.NET Core. Develop and enhance RESTful APIs following API-first design principles. Create, maintain, and consume OpenAPI (Swagger) specifications. Build web applications utilizing ASP.NET Core MVC and Web API frameworks. Customize solutions using Optimizely (Episerver) CMS and Commerce platforms. Implement content models and components within Optimizely. Design reusable libraries and manage package publishing through NuGet. Collaborate with architects, product owners, and UX designers to provide quality solutions. Participate in code reviews, testing, and performance optimization. Contribute to CI/CD pipelines and deployment automation. Ensure security, scalability, and reliability in applications. Must Haves: Strong experience with C# and .NET development. Hands-on experience with ASP.NET Core MVC and Web APIs. Experience designing and consuming REST APIs. Strong knowledge of OpenAPI/Swagger specifications. Experience with NuGet package management. Experience with Optimizely (Episerver) CMS. Good knowledge of JavaScript, TypeScript, HTML, and CSS. Experience with Git. Nice to Haves: Experience with Optimizely Commerce and its features. Experience with Azure Cloud Services. Knowledge of Docker. Experience with automated testing frameworks. Understanding of microservices architecture. Familiarity with frontend frameworks like React or Angular.

🏢 Summary: Backend Developer (.NET) role focused on development, maintenance, and modernization of an existing logistics system. The position involves working with legacy code, fixing bugs, refactoring, and improving business logic within a live operational environment. The role requires close collaboration with development and analytics teams. 🗂️ Requirements: 3–5 years of experience with .NET, Proficiency in C#, Experience with ASP.NET MVC or ASP.NET Core, Strong knowledge of SQL Server, Experience working with legacy codebases, Ability to debug and analyze complex issues, Experience with REST API, English level B2 minimum 📃 Skills: .NET, C#, ASP.NET, MVC, Core, SQL, SQLServer, REST, EntityFramework, Docker, UnitTesting 🏢 Description: Organizacja z branży logistycznej, rozwijająca własne systemy operacyjne, poszukuje osoby na stanowisko Backend Developer (.NET). Rola skupiona jest na rozwoju i stabilizacji istniejącego systemu oraz stopniowym jego unowocześnianiu. Zakres obowiązków Rozwój i utrzymanie systemu w technologii .NET Analiza i rozwiązywanie błędów w systemie (bugfixy) Refaktoryzacja istniejącego kodu Analiza logiki biznesowej i jej usprawnianie Współpraca z zespołem developerskim i analitycznym Praca z kodem bez pełnej dokumentacji Wymagania Min. 3–5 lat doświadczenia w .NET Dobra znajomość: C# ASP.NET (MVC / Core) SQL Server Doświadczenie w pracy z istniejącym kodem (legacy) Umiejętność debugowania i analizy problemów Znajomość REST API Znajomość języka angielskiego na poziomie minimum B2 Mile widziane Entity Framework (klasyczny i Core) Podstawy testów jednostkowych Znajomość Docker Oferujemy Pracę przy systemach o realnym wpływie na operacje biznesowe Możliwość rozwoju technologicznego Stabilne zatrudnienie Wpływ na jakość i rozwój systemu

🏢 Summary: The offer is for a Senior .NET Developer responsible for improving and refactoring core backend systems to enhance structure, maintainability, and security. The role focuses on reducing technical debt, enabling automation and AI integration, and ensuring high code quality through testing and CI/CD practices. The position involves hands-on development within legacy or monolithic environments and driving system modernization. 🗂️ Requirements: 5+ years experience in .NET / C# backend development, Experience with legacy or monolithic systems, Strong knowledge of clean code principles, Proven experience in refactoring existing codebases, Strong SQL and backend integration experience, Experience with APIs and service-based architecture, Experience with CI/CD pipelines, Experience with automated testing, Familiarity with TDD or BDD practices, Experience with Gherkin, SpecFlow, Cucumber or similar, Experience using AI tools in development workflows, Understanding of code structuring for automation and AI integration 📃 Skills: .NET, C#, SQL, APIs, CI/CD, TDD, BDD, Gherkin, SpecFlow, Cucumber, AI, Git, Docker, .NETCore 🏢 Description: Introduction & Summary: We are seeking a Senior .NET Developer with 5-8+ years of experience in backend development and .NET engineering. The successful candidate will drive improvement in code quality, reduce technical debt, and support system structuring for better predictability. With a focus on future automation and AI capabilities, you will help ensure code understandability, maintainability, and security. Main Responsibilities: Responsible for hands-on development and refactoring of core systems, with the aim of enhancing their structure and predictability. Develop and improve .NET-based systems. Reduce technical debt and increase maintainability. Support safe and efficient delivery. Ensure code is understandable, maintainable, and secure. Make systems testable and observable. Facilitate automation of workflows. Key Requirements: Strong experience with .NET / C#. Experience working with legacy or monolithic systems. Strong understanding of clean code principles. Experience with refactoring and improving existing codebases. Strong SQL and backend integration experience. Experience with APIs and service-based architecture. Experience with CI/CD pipelines. Experience with automated testing. Familiarity with TDD / BDD and security by design thinking. Experience with Gherkin / SpecFlow / Cucumber or similar. AI-related: Experience using AI tools in development workflows. Understanding of code structuring for automation and AI integration. Experience using AI for debugging, testing, or documentation support. Nice to Have: Experience with .NET Core. Experience with containerization. Exposure to AI-assisted testing or development tools. Experience improving system observability.