Senior .NET Developer

🏢 Summary: Senior .NET Developer role on a long-term, fully remote B2B project for an insurance and reinsurance client. The position focuses on developing and modernizing business-critical applications for migration to Microsoft Azure, using .NET, Blazor, SQL Server, Azure Functions, and Azure DevOps. 🗂️ Requirements: 5+ years of commercial .NET development experience, Commercial C# and .NET experience, Commercial Blazor experience or strong Full Stack experience with willingness to learn Blazor, SQL Server experience, Microsoft Azure experience, Azure Functions experience, Azure DevOps experience, English proficiency at B2 level or higher, Independent, proactive work in an Agile environment, Strong problem-solving and ownership mindset 📃 Skills: C#, .NET, Blazor, SQLServer, Azure, AzureFunctions, AzureDevOps, Agile 🏢 Description: We are looking for an experienced Senior .NET Developer to join a long-term project delivered for a well-established UK-based client from the insurance and reinsurance sector. You will become part of an international delivery team responsible for developing and modernizing business-critical applications as part of the client's ongoing migration to the Microsoft Azure ecosystem. 📍 100% Remote (Poland) 🚀 Start: Beginning of August 📅 6-month contract with possible extension 💼 B2B Requirements: Minimum 5 years of commercial experience as a .NET Developer Strong hands-on experience with C# and .NET Commercial experience with Blazor (or strong Full Stack experience with willingness to learn Blazor) Experience working with SQL Server Practical experience with Microsoft Azure Experience developing Azure Functions Experience working with Azure DevOps Very good English communication skills (minimum B2 ) Ability to work independently and proactively in an Agile environment Strong problem-solving skills and ownership mindset Nice to have: Experience in the insurance or financial services industry Experience working in distributed international teams Knowledge of Scrum or Kanban Experience with application modernization or cloud migration projects Familiarity with legacy application modernization Responsibilities: Design, develop, and deliver software solutions based on business and technical requirements Develop and maintain applications using .NET, Blazor, SQL Server, and Microsoft Azure Build and maintain Azure Functions and cloud-based services Participate in technical discussions and contribute to solution design Collaborate closely with developers, testers, architects, Product Owners, and business stakeholders Ensure high-quality, maintainable, and scalable code Take ownership of assigned user stories from development through delivery Support the modernization of legacy applications into the Azure ecosystem Participate in Agile ceremonies and work closely with distributed international teams We offer: Up to 110 PLN/h net on B2B 100% remote work 14-day invoice payment terms Private healthcare package Access to the MyBenefit cafeteria platform (including MultiSport and gift cards) Long-term cooperation with an international UK client Opportunity to work on large-scale Azure modernization projects Collaborative environment with experienced engineering teams and modern development practices

🏢 Summary: Senior .NET Developer role focused on building secure, scalable, cloud-native enterprise solutions on Azure. The position involves developing serverless applications, backend APIs, data integrations, and CI/CD-enabled delivery in an Agile, hybrid team environment. 🗂️ Requirements: 7+ years of professional software development experience, Hands-on C# and .NET Core/.NET 6+ experience, Azure Functions development and deployment experience, Azure Storage Accounts and Blob Storage expertise, Azure Key Vault expertise, Event-driven and asynchronous processing knowledge, OOP, design patterns, and SOLID principles knowledge, CI/CD pipeline experience with Azure DevOps or GitHub Actions, Agile/Scrum team experience, English communication skills 📃 Skills: C#, .NET, Azure, Functions, Blob, KeyVault, ServiceBus, AppServices, SQL, CosmosDB, CI/CD, DevOps, GitHub, ARM, Bicep, Terraform, OOP, SOLID, Agile, Scrum 🏢 Description: Location: Wroclaw, 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 deploy serverless applications using Azure Functions Build and optimize integrations with Azure Blob Storage for large-scale data handling Implement secure access and secrets management using Azure Key Vault Develop scalable backend services and APIs using .NET 6+ / .NET Core Apply software engineering best practices: code reviews, automated testing, and CI/CD Ensure security, reliability, and performance across all delivered solutions Troubleshoot production issues and contribute to system improvements Collaborate closely with cross-functional teams in an Agile environment Advocate for clean code, maintainable architecture, and technical excellence Required Skills & Experience 7+ years of professional software development experience Strong hands-on experience with C# and .NET Core / .NET 6+ Proven experience building and deploying Azure Functions (Durable Functions is a plus) Deep experience with Azure Storage Accounts and Blob Storage (containers, lifecycle management, access tiers) Strong experience with Azure Key Vault (secrets, certificates, access policies) Experience with other Azure services : Azure Service Bus Azure App Services / Web Apps Azure SQL / Cosmos DB (nice to have) Solid understanding of event-driven and async processing patterns Strong knowledge of OOP, Design Patterns, and SOLID principles Experience with CI/CD pipelines (Azure DevOps or GitHub Actions) Working knowledge of Infrastructure as Code (ARM / Bicep / Terraform) – nice to have Experience working in Agile / Scrum teams Strong analytical and problem-solving skills Excellent communication skills in English (Polish is a plus)

🏢 Summary: Senior .NET Developer role focused on transforming a data-intensive analytical platform for the cloud. The position involves scalable architecture design, legacy modernization, SOA-based development, user support, and close collaboration with engineering, analysis, and QA teams. 🗂️ Requirements: 5+ years of .NET software development experience, Web services design and implementation expertise, AWS and cloud environment experience, Redux and Context API mastery in React applications, Software design principles and best practices, Advanced English 📃 Skills: .NET, AWS, React, Redux, Context, SOA, Webservices 🏢 Description: We are looking for a Senior .NET Developer to join our team and contribute to the cloud transformation of a data-intensive analytical platform. In this role, you will collaborate with innovative and diverse professionals from around the world, designing scalable architectures and modernizing legacy components to ensure performance and reliability. Your tasks Contributing to the cloud transformation of a data-intensive analytical platform by designing scalable architectures and modernizing legacy components Ensuring continuous technological evolution of the product by proposing and implementing modern frameworks and architectural improvements Applying Service Oriented Architecture (SOA) concepts in software design and development Providing timely and courteous support to platform users, ensuring issues are understood, analyzed, and resolved promptly Collaborating closely with a team of software engineers, analysts, and quality engineers to design and build software solutions that meet business needs Adhering to team design and coding procedures and standards Requirements Minimum 5 years of experience in software development with a strong focus on .NET technologies Deep expertise in designing and implementing web services Practical experience with AWS and cloud environments Hands-on mastery of Redux and Context API in React applications Strong understanding of software design principles and best practices Advanced level of English Nice-to-have requirements Experience with C#

🏢 Summary: 6-miesięczny kontrakt z możliwością przedłużenia dla Senior .NET Developera odpowiedzialnego za projektowanie, rozwój i utrzymanie skalowalnych aplikacji backendowych oraz API. Rola obejmuje współpracę z zespołami projektowymi, projektowanie architektury, optymalizację rozwiązań, utrzymanie systemów produkcyjnych i wsparcie mniej doświadczonych osób. 🗂️ Requirements: Minimum 6 lat komercyjnego doświadczenia w C#/.NET, Bardzo dobra znajomość .NET Core / .NET 6+, Doświadczenie w projektowaniu i rozwoju aplikacji backendowych oraz REST API, Znajomość wzorców projektowych i zasad SOLID, Doświadczenie w pracy z bazami danych SQL, Znajomość Git i praktyk CI/CD, Doświadczenie w Agile, Scrum lub Kanban, Bardzo dobra znajomość języka angielskiego 📃 Skills: C#, .NET, SQL, REST, Git, CI/CD, Agile, Scrum, Kanban, SOLID 🏢 Description: Poszukujemy doświadczonego Senior .NET Developera (C#) do realizacji projektu dla naszego klienta. Jest to kontrakt na 6 miesięcy z możliwością przedłużenia współpracy. Zakres obowiązków Projektowanie, rozwój i utrzymanie aplikacji backendowych w technologii C#/.NET. Tworzenie oraz rozwijanie wydajnych i skalowalnych usług oraz API. Współpraca z zespołem projektowym przy analizie wymagań biznesowych i technicznych. Dbanie o wysoką jakość kodu poprzez stosowanie dobrych praktyk programistycznych oraz udział w code review. Identyfikowanie i rozwiązywanie problemów technicznych oraz optymalizacja istniejących rozwiązań. Tworzenie i aktualizacja dokumentacji technicznej. Udział w projektowaniu architektury aplikacji oraz proponowanie usprawnień technologicznych. Współpraca z zespołami QA, DevOps oraz analitykami w celu sprawnej realizacji projektu. Wsparcie mniej doświadczonych członków zespołu oraz dzielenie się wiedzą. Aktywny udział w procesie wdrażania nowych funkcjonalności i utrzymania systemów produkcyjnych. Wymagania: Minimum 6 lat doświadczenia komercyjnego w programowaniu w C#/.NET . Bardzo dobra znajomość platformy .NET (.NET Core / .NET 6+). Doświadczenie w projektowaniu i rozwoju aplikacji backendowych oraz REST API. Znajomość wzorców projektowych i zasad SOLID. Doświadczenie w pracy z bazami danych SQL. Znajomość Git oraz praktyk CI/CD. Umiejętność pracy w metodykach Agile (Scrum/Kanban). Bardzo dobra znajomość języka angielskiego umożliwiająca pracę w międzynarodowym środowisku.

🏢 Summary: B2B .NET Developer role with hybrid work in Wroclaw or Krakow, delivering modern solutions across multiple industries. The role focuses on building maintainable .NET and Azure applications, CI/CD, AI solutions, client collaboration, and Agile delivery. 🗂️ Requirements: 3+ years of .NET web development experience, Experience with Microsoft Azure services, Experience with Azure DevOps or GitHub Actions, Basic Python exposure, Clean code, design patterns and modern architecture knowledge, English proficiency at B2 level 📃 Skills: .NET, Azure, AzureDevOps, GitHubActions, Python, CICD, Agile, DesignPatterns 🏢 Description: We’re looking for specialists open to cooperate on B2B basis, for our customer – Avanade Poland. Avanade website ; Privacy policy This role is available for specialists open to work in hybrid mode (offices in Wroclaw and Krakow) - we can discuss the frequency of visiting the office. Position: As .NET Developer, you will broaden your experience by working in modern projects for various domains and industries. You will extend your skills in a wide range of tools, focusing on tasks such as: Consistently developing and delivering high-quality, low-defect, maintainable and robust code using modern Microsoft technologies like .NET and Azure Working with CI/CD tools such as Azure DevOps/GitHub Actions Designing, prototyping and building AI solutions using Python , Azure and newest AI technologies Working directly with clients (both technical and business) to define and refine requirements Working closely with your project team using Agile methodologies Ensuring quality through adherence to technical best practice and through mentorship and feedback Working in projects for various industries: Energy, Automotive, Retail, Aviation, Finances, Health, Life Sciences and more. Required skills: For this role, you will need: 3y+ of experience with web development using .NET (.NET 10 is a nice-to-have) Experience with MS Azure and its services Azure DevOps or GitHub Actions At least basic exposure to Python Knowledge of clean code principles, design patterns and modern architecture English skills at B2 level (we communicate in English on a daily basis) Nice to have: Experience in AI-related projects (commercial or non-commercial) Fluency in using assistive development tools (e.g. GitHub Copilot, Cursor, Claude Code) Experience in Microsoft Foundry or Copilot Studio Working experience with Docker Knowledge of Front-End technologies (e.g. React.js) If you want to ask any questions before applying, feel free to reach out via LinkedIn !

🏢 Summary: Lead .NET Developer role for an international client, owning delivery of Azure-based applications while improving production performance, reliability, and code quality. The position includes technical leadership, mentoring, collaboration with QA, DevOps, architecture, and product stakeholders, and support for modularizing monolithic functionality. 🗂️ Requirements: 10+ years of software development experience, Strong C#, .NET, ASP.NET Core and Web API experience, Strong Entity Framework / EF Core experience, Strong Azure experience: App Services, Azure SQL, Application Insights, Azure DevOps and CI/CD, Production-system performance and reliability improvement experience, Developer leadership, code review and engineering standards experience, Strong communication with technical and non-technical stakeholders 📃 Skills: C#, .NET, ASP.NET, WebAPI, EntityFramework, EFCore, Azure, AppServices, AzureSQL, ApplicationInsights, AzureDevOps, CI/CD 🏢 Description: Zaven is a software company from Wrocław, Poland. We build high-quality custom software for essential industries. Our focus is on practical results and trusting our people, not on strict rules or long processes. If you want to work with smart teams to build important software, and you want to avoid big company bureaucracy, this is the place for you. Now we’re looking for a .NET Developer to join our team on a project for one of our international clients. We need a hands-on .NET lead developer who can own delivery, improve code quality, mentor developers, and work closely with architecture, QA, DB, DevOps, and product stakeholders. What exactly will you be doing?: Leading development work across .NET, C#, and Azure-based applications. Reviewing and improving code quality, performance, maintainability, and reliability. Working on application performance optimizations, including async/await, EF Core usage, caching, API design, memory allocation, HttpClient usage, long-running processes, and error handling. Supporting the decomposition of monolithic functionality into modular components or services. Partnering with QA teams on testability, regression coverage, defect triage, and release readiness. Mentoring mid-level developers and raising engineering standards. Collaborating with product and business stakeholders to clarify requirements and reduce rework. Participating in production issue analysis and root-cause reviews. Required Skills & Experience: 10+ years software development experience. Strong C#, .NET, ASP.NET Core, Web API experience. Strong Entity Framework / EF Core experience. Strong Azure experience: App Services, Azure SQL, Application Insights, Azure DevOps, CI/CD. Experience improving performance and reliability in production systems. Experience leading developers, reviewing code, and setting engineering standards. Strong communication skills with both technical and non-technical stakeholders. Nice to have: Angular / React / front-end experience. Redis / distributed caching. Azure Front Door, API Management, Service Bus, Storage. Insurance, fintech, or regulated environment experience. Experience with test automation and CI/CD quality gates.