Fullstack Developer (Node.js / .NET / Azure / Terraform)

🏢 Summary: Senior Backend Software Engineer role focused on designing, building, and operating secure, scalable .NET microservices for cloud and hybrid environments. The position delivers backend features end to end using Azure services, SQL Server, Cosmos DB, asynchronous messaging, automated testing, and CI/CD practices. 🗂️ Requirements: 5+ years of backend or distributed systems engineering experience, Proficiency in C#, .NET 8/10, ASP.NET Core, and Azure Functions, Experience with SQL Server, T-SQL, EF Core, RLS, and NoSQL databases, Practical Azure services experience, Knowledge of OAuth2, JWT, and identity-provider integrations, Experience with multi-tenant SaaS architectures, Knowledge of asynchronous message-driven systems, Experience with CI/CD, Terraform, and Docker/Kubernetes, Strong unit and integration testing practices 📃 Skills: C#, .NET, ASP.NET, Azure, SQL, T-SQL, EF, CosmosDB, OAuth2, JWT, SaaS, CI/CD, Terraform, Docker, Kubernetes, xUnit, Moq, FluentAssertions, GitHub, Azurite 🏢 Description: We are looking for an experienced Senior Backend Software Engineer to design, build, and operate backend services within a modern, scalable microservices environment. The role involves working with ASP .NET Core, Azure Functions, SQL Server, and Azure CosmosDB to deliver high‑performance, secure solutions for cloud and hybrid environments. Key Responsibilities: ·       End‑to‑end development of backend features using ASP .NET Core APIs, Azure Functions, SQL Server, and CosmosDB ·       Building and extending .NET services in a microservices architecture ·       Implementing resilient, asynchronous workflows using Azure Service Bus ·       Designing secure and efficient data access patterns (SQL Server, CosmosDB) ·       Ensuring multi‑tenant data isolation and compliance with security standards ·       Using Azure services such as Service Bus, Blob Storage, App Configuration, Application Insights, and Entra ID ·       Writing unit and integration tests (xUnit, Moq, FluentAssertions) ·       Contributing to CI/CD pipelines (GitHub Actions, Azure DevOps) ·       Working with Terraform, Docker Compose, and Azurite ·       Identifying and resolving performance, security, and reliability issues ·       Independently delivering backend features from design to production ·       Participating in architecture discussions and code reviews ·       Collaborating with product and frontend teams on API design ·       Mentoring junior engineers and promoting AI‑driven development practices. Qualifications: ·       Minimum 5  years of experience in backend or distributed systems engineering ·       Strong proficiency in C# / .NET 8/10, ASP .NET Core, Azure Functions ·       Experience with SQL Server (T‑SQL, EF Core, RLS) and NoSQL databases (CosmosDB preferred) ·       Practical knowledge of Azure services (Functions, Service Bus, Blob Storage, App Configuration, App Insights) ·       Understanding of OAuth2, JWT, and identity provider integrations ·       Experience with multi‑tenant SaaS architectures ·       Familiarity with asynchronous, message‑driven systems ·       Knowledge of CI/CD, Terraform, Docker/Kubernetes ·       Strong testing discipline and communication skills. Benefits: ·       Health benefits & insurance ·       Multisport card ·       Learning and development opportunities ·       Flexible work schedule ·       Innovative work in cybersecurity and AI-native environment ·       Opportunities for career growth. Apply now!

🏢 Summary: Hybrid B2B role for a Fullstack .NET Engineer modernizing legacy applications into a cloud-native Azure architecture. The position covers .NET backend services, React microfrontends, Azure infrastructure, CI/CD, testing, security, and production support. 🗂️ Requirements: 5+ years of commercial full-stack experience with C# and .NET, Strong EF Core and MSSQL or Azure SQL skills, Hands-on Azure experience, Terraform Infrastructure as Code experience, Azure DevOps CI/CD experience, REST API development and security experience, Automated testing experience, Observability knowledge, Good Git practices and code review discipline 📃 Skills: C#, .NET, EF, MSSQL, Azure, Terraform, DevOps, REST, Git 🏢 Description: Project details: Location : Hybrid work with 5 days in the office per month in Kraków. Contract type : B2B Working time : 09:00-17:00 CET. Summary: The Fullstack .NET Engineer role aims to drive the modernization of legacy applications into a cloud-native Azure architecture, contributing to both backend and frontend development while supporting various components of the system. Responsibilities: Design and implement backend services and REST APIs in .NET 9 with Clean Architecture. Build and maintain React + TypeScript microfrontends. Evolve MSSQL / Azure SQL schemas and write/tune queries with EF Core. Author and maintain Infrastructure as Code in Terraform for Azure resources. Optimize and support CI/CD pipelines in Azure DevOps. Integrate Azure AD for authentication and apply security best practices. Instrument services for observability and health checks. Refactor legacy code during migration. Write and maintain automated tests. Troubleshoot production incidents and support deployments. Collaborate in Agile ceremonies and conduct code reviews. Key Requirements: 5+ years of commercial full-stack experience with C# / .NET. Strong EF Core and MSSQL / Azure SQL skills. Hands-on Azure experience. Infrastructure as Code experience with Terraform. CI/CD experience in Azure DevOps. Experience building and securing REST APIs. Automated testing experience. Observability knowledge. Good Git practices and code review discipline. Nice to Have: Production experience with React and TypeScript. Familiarity with Azure Data Factory and Power BI. Microfrontends or module federation experience. Experience with Docker and Kubernetes. Knowledge of Bicep / ARM in addition to Terraform. Event-driven integration with Azure services. Experience modernizing legacy UIs and services. Relevant Azure certifications (AZ-204, AZ-400, AZ-104).

🏢 Summary: Senior Full Stack Developer role focused on building and supporting scalable, secure cloud-native enterprise applications on Microsoft Azure. The position combines modern frontend and backend development with REST APIs, microservices, event-driven architecture, and AI-powered business solutions. 🗂️ Requirements: 7+ years of full-stack software development experience, Strong React, Angular, Next.js, JavaScript, and TypeScript knowledge, Backend development experience with .NET Core, Python, Node.js, or Java, Microsoft Azure experience, including App Services, Functions, and API Management, SQL Server, PostgreSQL, or Cosmos DB knowledge, Microservices, REST APIs, OAuth, and OpenID Connect experience, Git, Azure DevOps, and CI/CD pipeline familiarity, Basic Docker and Kubernetes knowledge 📃 Skills: Azure, React, Angular, Next.js, JavaScript, TypeScript, .NET, Python, Node.js, Java, REST, OpenAI, Databricks, Entra, SQL, PostgreSQL, CosmosDB, OAuth, OpenID, Git, AzureDevOps, CI/CD, Docker, Kubernetes 🏢 Description: We are looking for an experienced Senior Full Stack Developer to design, develop, and support modern cloud-native applications built on Microsoft Azure . The role involves developing enterprise web applications, backend services, APIs, and AI-powered solutions, including Generative AI and intelligent business applications. You will work closely with Data, AI, DevOps, and Product teams to deliver scalable, secure, and high-performing cloud solutions. Key Responsibilities Design, develop, and maintain cloud-native applications and backend services on Microsoft Azure. Build modern frontend applications using React, Angular, Next.js, or similar frameworks. Develop backend services and REST APIs using .NET Core, Python, Node.js, or Java. Integrate applications with Azure OpenAI, Azure AI Foundry, Databricks, and other enterprise AI services. Design microservices and event-driven architectures. Implement authentication and authorization using Microsoft Entra ID. Collaborate with Data, AI, DevOps, and Product teams throughout the software development lifecycle. Participate in architecture discussions, code reviews, testing, and production support. Continuously improve application performance, security, scalability, and reliability. Requirements 7+ years of experience in Full Stack software development. Strong knowledge of React, Angular, Next.js, JavaScript, and TypeScript. Hands-on experience with backend development using .NET Core, Python, Node.js, or Java. Experience with Microsoft Azure services, including App Services, Functions, and API Management. Good knowledge of SQL Server, PostgreSQL, or Cosmos DB. Experience with microservices, REST APIs, OAuth, and OpenID Connect. Familiarity with Git, Azure DevOps, and CI/CD pipelines. Basic knowledge of Docker and Kubernetes.