Senior .Net Developer / Krakow

🏢 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, microservices, and event-driven systems in a Kubernetes-based environment while applying DevOps and best engineering practices. Hybrid work model in Wroclaw with high-impact global projects. 🗂️ Requirements: 7+ years of professional software development experience, Strong experience with C# and .NET Core / .NET 6+, Experience building modern APIs and enterprise applications, Hands-on experience with Microsoft Azure services (AKS, Web Apps, Functions, Service Bus, Storage, Key Vault), Experience with Containers and Kubernetes, Experience with messaging platforms (Kafka preferred), Understanding of Microservices and Event-Driven Architecture, Knowledge of Object-Oriented Programming, SOLID principles, Design Patterns, Experience with multi-threading and concurrent programming, Experience with cloud architecture on Azure, Frontend experience with React and TypeScript/JavaScript, Knowledge of HTML5 and CSS3, Experience with CI/CD, TDD, and DevOps practices 📃 Skills: C#, .NET, ASP.NET, Azure, AKS, Kubernetes, Docker, Kafka, React, TypeScript, JavaScript, HTML5, CSS3, CI/CD, TDD, DevOps, Microservices, REST, ServiceBus, EventGrid 🏢 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 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 Experience with messaging platforms, preferably Kafka 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 Service Bus Frontend development experience with React , TypeScript/JavaScript Strong knowledge of HTML5 and CSS3 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: Senior .NET Developer role focused on designing and delivering scalable, cloud-native enterprise solutions using .NET 6+ and Microsoft Azure. The position involves building modern APIs and microservices, working with Kubernetes and containers, and ensuring high availability, security, and observability of distributed systems. Hybrid work model in Wroclaw with strong emphasis on DevOps, clean code, and engineering best practices. 🗂️ Requirements: 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, Strong experience with Microsoft Azure services (AKS, Azure Containers, Azure Web Apps, Azure Functions, Azure Service Bus, Azure Storage Accounts, Azure Key Vault), Experience with messaging platforms, preferably Kafka, 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, Experience with Azure App Services, Container Apps, Event Grid, Service Bus, Frontend experience with React and TypeScript/JavaScript, Strong knowledge of HTML5 and CSS3, Experience working in Agile environments using TDD and DevOps practices, Strong analytical, troubleshooting, and problem-solving skills, Excellent verbal and written communication skills 📃 Skills: C#, .NET, ASP.NET, Azure, AKS, Kubernetes, Docker, Kafka, React, TypeScript, JavaScript, HTML5, CSS3, Microservices, CI/CD, DevOps, TDD, EventGrid, ServiceBus, AzureFunctions, AzureStorage, AzureKeyVault 🏢 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 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 Experience with messaging platforms, preferably Kafka 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 Service Bus Frontend development experience with React , TypeScript/JavaScript Strong knowledge of HTML5 and CSS3 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: Senior full-stack .NET Developer role focused on building scalable applications using .NET, Angular, and Microsoft Azure. The position involves designing cloud-based solutions, contributing to architecture decisions, and ensuring high code quality with modern engineering practices. Work includes CI/CD implementation and collaboration within Agile teams. 🗂️ Requirements: 4+ years commercial experience with .NET (C#, .NET/.NET Core, Entity Framework or other ORM, WCF), 3+ years experience with Angular (or React with recent Angular), 2+ years experience with Microsoft Azure services, Experience with REST or SOAP web services and APIs, Knowledge of software architecture and design patterns, Experience with Unit Testing and Clean Code principles, Strong SQL knowledge, Experience with Git and CI/CD pipelines, Experience with automated deployments, Fluent English 📃 Skills: C#, .NET, .NETCore, Angular, Azure, EntityFramework, WCF, SQL, REST, SOAP, Git, CI/CD, AzureFunctions, AzureLogicApps, AzureWebApps, AzureSQL, SQLServer 🏢 Description: Role Overview We are looking for a Senior .NET Developer with strong experience in Angular and Microsoft Azure to join our development team. In this role, you will work in a full-stack capacity, building scalable applications and cloud-based solutions while applying modern software engineering practices. You will collaborate with cross-functional teams, contribute to architecture decisions, and ensure high standards of code quality, testing, and continuous delivery. Key Responsibilities Design, develop, and maintain full-stack applications using .NET technologies and Angular . Apply object-oriented and functional programming principles to solve complex software engineering challenges. Write clean, maintainable, and well-tested code following recognized software design patterns and best practices. Develop and deploy solutions using Microsoft Azure services . Work in Agile development environments , contributing to sprint planning, reviews, and continuous improvement. Implement and support CI/CD pipelines to enable efficient and reliable software delivery. Collaborate with architects, developers, and stakeholders to design scalable and high-quality solutions. Skills & Attributes for Success Strong ability to write clean, readable, and maintainable code aligned with established coding standards. Solid understanding of software design patterns and architecture principles . Passion for continuous learning and exploring new technologies, particularly within the Azure ecosystem . Strong analytical and problem-solving skills. Ability to work effectively in a collaborative Agile environment. Required Qualifications 4+ years of commercial experience with .NET technologies (C#, .NET / .NET Core, Entity Framework or other ORM, WCF). 3+ years of experience with Angular (React experience combined with recent Angular experience is also acceptable). 2+ years of experience with Microsoft Azure services , such as: Azure Functions Azure Logic Apps Azure Web Apps Azure SQL / SQL Server Experience working with web services and APIs (REST / SOAP). Good knowledge of software architecture and design patterns . Experience with Clean Code principles and Unit Testing . Solid knowledge of SQL . Experience with Git , CI/CD pipelines , and automated deployment processes. Fluent English (spoken and written).

🏢 Summary: Senior full-stack role focused on building and maintaining scalable applications using .NET and React in Microsoft Azure. The position involves designing cloud-based solutions, contributing to architecture decisions, and ensuring high code quality, testing, and CI/CD practices within an Agile environment. 🗂️ Requirements: 4+ years commercial experience with .NET (C#, .NET/.NET Core, Entity Framework or other ORM, WCF), 3+ years experience with React (or Angular with recent React), 2+ years experience with Microsoft Azure services, Experience with REST or SOAP web services and APIs, Strong knowledge of software architecture and design patterns, Experience with Clean Code principles and Unit Testing, Solid knowledge of SQL, Experience with Git and CI/CD pipelines, Experience with automated deployments, Fluent English 📃 Skills: C#, .NET, .NETCore, EntityFramework, WCF, React, Angular, Azure, AzureFunctions, AzureLogicApps, AzureWebApps, AzureSQL, SQLServer, REST, SOAP, SQL, Git, CI/CD, UnitTesting 🏢 Description: Role Overview We are looking for a Senior .NET Developer with strong experience in React and Microsoft Azure to join our team. In this role, you will work on designing and developing modern full-stack applications, applying best engineering practices and delivering scalable solutions in a cloud environment. You will collaborate closely with cross-functional teams, contribute to architecture decisions, and ensure high standards of code quality, testing, and continuous delivery. Key Responsibilities Design, develop, and maintain full-stack applications using .NET technologies and React . Apply object-oriented and functional programming principles to solve real-world engineering challenges. Write clean, maintainable, and well-tested code following established software design patterns and best practices. Develop and deploy solutions in Microsoft Azure cloud environments . Participate in Agile software development processes , including sprint planning, reviews, and retrospectives. Implement and maintain CI/CD pipelines to enable efficient and reliable software delivery. Collaborate with architects, developers, and stakeholders to design scalable and high-quality solutions. Skills & Attributes for Success Strong ability to write clean, readable, and maintainable code aligned with established design patterns and coding standards. Passion for continuous learning and exploring new technologies, especially within the Azure ecosystem . Strong analytical and problem-solving skills. Ability to work effectively in a collaborative and Agile team environment. Required Qualifications 4+ years of commercial experience with .NET technologies (C#, .NET / .NET Core, Entity Framework or other ORM, WCF). 3+ years of experience with React (Angular experience combined with recent React experience is also acceptable). 2+ years of experience with Microsoft Azure services , such as: Azure Functions Azure Logic Apps Azure Web Apps Azure SQL / SQL Server Experience working with web services and APIs (REST / SOAP). Strong knowledge of software architecture and design patterns . Experience with Clean Code principles and Unit Testing . Solid knowledge of SQL . Experience with source code management (Git) and CI/CD pipelines , including automated deployment. Fluent English (both written and spoken).

🏢 Summary: Senior .NET + Angular Developer role focused on building and modernizing cloud-native financial systems using containerized microservices. The position involves designing scalable backend services, dynamic frontends, and leading Kubernetes-based deployments within a DevOps-driven environment. You will contribute to migrating legacy systems to a modern, resilient architecture with strong emphasis on clean code and automation. 🗂️ Requirements: 5+ years of experience in software engineering, Strong mastery of .NET (C#), Strong experience with Angular (v12+), Practical experience with Kubernetes, Experience building and running containerized applications, Proficiency in SQL Server or relational databases, Experience with database schema design and performance tuning, Knowledge of CI/CD practices, Understanding of TDD and SOLID principles, Fluent professional English 📃 Skills: .NET, C#, Angular, Kubernetes, SQL, SQLServer, CI/CD, TDD, SOLID, Azure, AWS, EKS, AKS, Kafka, Helm, Terraform, Microservices, Docker 🏢 Description: The Opportunity We are representing an established international financial institution currently undergoing a massive shift toward cloud-native architecture. While many firms talk about "digital transformation," this team is actively dismantling legacy monoliths and rebuilding them as high-performance, containerized microservices. We are looking for a Senior .NET + Angular Developer who doesn't just "use" Kubernetes but understands how to build and scale applications within a modern orchestration ecosystem. This is a role for an engineer who values clean code, architectural integrity, and the power of automated, scalable infrastructure. Your Impact Architect & Build: Design and develop robust backend services using .NET 8/Core and dynamic, responsive frontends in Angular. Cloud-Native Excellence: Take a lead role in deploying and managing services within Kubernetes , ensuring our applications are resilient, observable, and scalable. Database Engineering: Design efficient schemas and optimize complex queries within SQL environments to handle high-frequency financial data. Modernize the Stack: Actively participate in the migration of services to a containerized environment, advocating for best practices in CI/CD and DevOps. Collaborate: Work within a cross-functional team of high-caliber engineers, participating in deep-dive code reviews and architectural workshops. Your Technical Profile The Core: Extensive experience (5+ years) in software engineering with a strong mastery of .NET (C#) and Angular (v12+). The K8s Edge: Proven experience working with Kubernetes . You should be comfortable with pods, services, deployments, and understanding how your code behaves in a containerized environment. Data Mastery: Strong proficiency in SQL Server or similar relational databases, including performance tuning and schema design. Quality First: A mindset focused on TDD, Clean Code, and SOLID principles. Communication: Fluent professional English (written and spoken) is essential for collaboration with our global teams. Preferred (Nice-to-Have) Experience with Azure or AWS (EKS/AKS). Knowledge of Kafka or other message brokers for event-driven architecture. Familiarity with Helm charts or Terraform (IaC). What’s in it for You? Hybrid Flexibility: Work from the comfort of your home anywhere in Poland, with only two scheduled visits per month to our modern hub in Łódź for team integration and high-level strategy sessions. Premium Tech Stack: No "maintenance only" projects. You will work on greenfield features and modern cloud migrations. Stability & Growth: The security of an established enterprise with the agile mindset of a tech-forward team. Streamlined Recruitment: A transparent, technical process that respects your time.

🏢 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: Hands-on Senior .NET / Azure Engineer role focused on designing and delivering scalable, secure integration solutions across enterprise platforms. The position combines architecture design with end-to-end implementation of API-driven and microservices-based systems in a global financial environment. You will own solutions from concept through production, leveraging .NET and Azure technologies. 🗂️ Requirements: Strong experience with .NET (C#) in enterprise environments, Extensive hands-on experience with Microsoft Azure, Experience with Azure Functions, Experience with Service Bus, Experience with API Management (APIM), Experience with Application Insights, Proven experience building API-driven architectures, Proven experience building microservices architectures, Strong understanding of integration patterns, Strong understanding of distributed systems, Experience with unit testing, Ability to deliver solutions from design to production autonomously 📃 Skills: .NET, C#, Azure, AzureFunctions, ServiceBus, APIM, ApplicationInsights, APIs, Microservices, DistributedSystems, UnitTesting, Python, GCP 🏢 Description: Senior .NET / Azure Engineer (Solutions-Focused) Kraków, Poland (6 days per month onsite – flexible scheduling) Up to 1700 PLN/day (B2B) Overview We’re supporting a global financial services organisation in hiring a Senior .NET / Azure Engineer to play a key role in designing and delivering scalable integration solutions across enterprise platforms. This is a hands-on, solutions-focused position where you will operate at the intersection of architecture and engineering — owning designs and driving them through to production. The core focus is firmly on .NET and Azure , with Python considered a nice to have . The Role You’ll take ownership of designing and delivering robust integration solutions across complex systems, working closely with senior stakeholders and architecture leadership. This is not a pure architecture role — you’ll be expected to design, build, and deliver end-to-end solutions. Key Responsibilities Design end-to-end solution architectures for APIs and microservices Build and deliver scalable, secure integration solutions using .NET and Azure Develop low-latency communication between backend systems and UI layers Lead integration work across platforms using Azure Functions, Service Bus, and APIs Collaborate with senior architecture stakeholders on design approvals and improvements Monitor, debug, and optimise applications using Application Insights Contribute to future-state architecture discussions, including multi-cloud considerations Technical Requirements Strong experience with .NET (C#) in enterprise environments Extensive hands-on experience with Microsoft Azure , including: Azure Functions Service Bus API Management (APIM) Application Insights Proven experience building API-driven and microservices architectures Strong understanding of integration patterns and distributed systems Experience with unit testing and quality-first development practices Ability to move from design to production delivery autonomously Nice to Have Exposure to Python (not a core requirement) Experience with GCP or multi-cloud environments Experience integrating with CRM or SaaS platforms Background working in financial services or regulated environments What We’re Looking For A hands-on engineer with strong design capability Someone who can take ownership — from concept through to delivery A proactive problem solver who can unblock integration challenges Strong communicator, comfortable working with senior technical stakeholders Additional Information Flexible hybrid model: 6 days per month in the Kraków office (not fixed weekly) Long-term programme of work within a global enterprise environment Competitive B2B rate up to 1700 PLN/day

🏢 Summary: Senior .NET Developer role focused on building and architecting cloud-native backend systems with AWS and CI/CD automation. The position involves designing microservices-based solutions, writing high-quality testable code, and contributing across the full project lifecycle in a spec-driven environment. Fully remote B2B contract with long-term cooperation potential. 🗂️ Requirements: Experience with modern .NET / .NET Core, Experience with AWS or Azure, Knowledge of microservices architecture, Knowledge of distributed systems, Ability to design system architecture, Experience writing integration tests, Experience writing end-to-end tests, Familiarity with BDD approach, Experience with CI/CD automation 📃 Skills: .NET, NETCore, AWS, Azure, CI/CD, Microservices, DistributedSystems, C#, BDD, IntegrationTesting, E2ETesting, Architecture 🏢 Description: Join an international IT company specializing in cloud services, managed services, and digital transformation for enterprises. As a Senior .NET Developer with a focus on AWS and CI/CD automation, you will participate in the project by providing backend support to the Tech Lead and a team. Key responsibilities Designing and architecting system components, Writing high-quality, testable code in .NET, Contributing to the development of modern cloud-native solutions, Working across the full project lifecycle (from discovery to delivery), Participating in planning and analysis (discovery, planning), Working in a “spec-driven” approach (based on specifications), Co-creating and refining specifications, acceptance criteria, and architectural decisions. Ideal candidate profile Experience with . NET (Core / modern .NET), Azure or AWS , Knowledge of architecture: microservices, distributed systems, Ability to translate business requirements into technical architecture, Writing integration and end-to-end tests, Familiarity with BDD (Behavior-Driven Development) approach. Conditions Type of cooperation: B2B contract Initial contract duration: 1st June- End of February 2027, with the intention to extend the cooperation or move top performers to another project. Rate: 130 - 160 PLN/h Benefits: Private healthcare, Multisport card and life insurance Work model: 100% remote from any location in Poland Recruitment steps Phone call with a Recruiter - Oliwia (approx. 20 min.) Interview with Client : Introductory conversation with the delivery team: review of your experience vs project needs, light technical questions, and verification of your comfort in a fully English‑speaking, international environment. Introductory interview : discussion of experience in relation to project requirements, technical questions. Final technical interview with Client : in‑depth technical questions, possibly practical task to see how you think, ask questions, and structure solutions. Decision and feedback

🏢 Summary: Senior .NET Developer role focused on building and maintaining extended functionalities within a distributed, cloud-based system. The position involves working with modern .NET technologies, Angular, cloud platforms, and microservices architecture in an Agile/Scrum environment. The role requires close collaboration with stakeholders while applying clean code and best development practices. 🗂️ Requirements: Bachelor’s degree or Microsoft .NET certification, Strong experience with .NET and C#, Experience with ASP.NET Core and Web API, Experience with Angular (2+), Experience with Azure or AWS, Experience with microservices and distributed systems, Experience with PostgreSQL and SQL Server, Experience with database migrations, Experience with GitHub, Knowledge of SOLID and DRY principles, Fluent English (written and spoken) 📃 Skills: .NET, C#, ASP.NET, Angular, Azure, AWS, Microservices, Kafka, PostgreSQL, SQL, GitHub, WebAPI 🏢 Description: We are looking for a Senior .Net Developer . Responsibility: Develop and maintain extended functionalities Collaborate closely with internal and external consultants, as well as key business stakeholders Work with technologies including Angular (2+), Azure/AWS Cloud, and the .NET stack (.NET 8/9, ASP.NET Core, C#, Web API), along with microservices and distributed systems, Kafka (or similar messaging tools), and databases such as PostgreSQL and SQL Server Actively participate in daily stand-ups, sprint reviews, and planning sessions with Danish colleagues, contributing to continuous improvement of the Scrum process To succeed in this role, you: Hold a relevant bachelor’s degree or a Microsoft certification related to .NET Apply clean code principles and best practices such as SOLID and DRY, with a strong object-oriented mindset Have proven experience in Microsoft .NET (C#), GitHub, PostgreSQL, and database migrations Communicate fluently in English, both written and spoken

🏢 Summary: B2B contract for a Mid/Senior FullStack Engineer to modernize and migrate legacy .NET applications to a modular, cloud-native Azure architecture in the banking sector. The role combines backend development in .NET with frontend work in React, focusing on refactoring legacy systems, building scalable APIs, and implementing CI/CD and observability practices. Hybrid work model with strong influence on architectural decisions and cloud migration. 🗂️ Requirements: 5+ years of commercial experience with C# and .NET (Framework and .NET Core/6+), Strong proficiency in EF Core and MSSQL (query tuning, transactions, indexing), Commercial experience with React and TypeScript, Experience building and securing REST APIs (authentication, versioning, validation), Familiarity with Azure services (App Service, Functions, SQL, Service Bus, Storage), Experience with automated testing (unit, integration, contract, E2E), Experience with CI/CD pipelines (Azure DevOps or GitHub Actions), Ability to work with legacy .NET codebases (ASP.NET MVC, Razor, WPF, WinForms), English at B2+ level 📃 Skills: C#, .NET, .NETCore, .NET6, .NET8, EFCore, MSSQL, T-SQL, React, TypeScript, REST, Azure, AppService, AzureFunctions, AzureSQL, ServiceBus, AzureStorage, xUnit, Jest, Playwright, Cypress, Git, AzureDevOps, GitHubActions, ASP.NET, MVC, Razor, WPF, WinForms, DDD, CleanArchitecture 🏢 Description: We are looking for FullStack Engineer (.NET & React) Location: Kraków / Hybrid (7 days in the office per month) Contract Type: B2B Contract Seniority: Mid / Senior About the Project Join a high-impact modernization initiative for a leading player in the banking sector . We are transforming a portfolio of approximately a dozen .NET applications and MSSQL databases into a modular, cloud-native Azure architecture. As a FullStack Engineer, you will play a dual role: evolving existing production services (including legacy UI and desktop components) while systematically extracting business logic to re-implement it into a modern, scalable ecosystem. This is a unique opportunity to influence the transition from monolithic architectures to high-performance, distributed cloud services. Your Responsibilities Design & Development: Build backend services and APIs using .NET 6/8 following Clean Architecture and DDD patterns. Frontend Evolution: Develop and maintain React + TypeScript frontends, managing the incremental migration from legacy UI modules. Modernization: Read, refactor, and extract complex business logic from legacy .NET codebases and T-SQL stored procedures. Quality Assurance: Write and maintain comprehensive automated tests (Unit, Integration, Contract, and E2E). DevOps & Observability: Create CI/CD pipelines (Azure DevOps/GitHub Actions) and instrument services for deep observability (metrics, logs, distributed traces). Collaboration: Participate in domain modeling, architecture discussions, and Agile ceremonies with Architects and Product Owners. Skills & Experience We Require Experience: 5+ years of commercial experience with C# and the .NET ecosystem (both Framework and .NET Core/6+). Database Expertise: Strong proficiency in EF Core and MSSQL (including query tuning, transactions, and indexing). Frontend: Solid production experience with React and TypeScript. Web Services: Practical experience in building and securing REST APIs (Auth, Versioning, Validation). Cloud: Familiarity with Azure services (App Service, Functions, SQL, Service Bus, Storage). Testing & Tooling: Experience with xUnit, Jest, and Playwright/Cypress, as well as disciplined Git practices. Legacy Handling: The ability to read and reason about legacy codebases (ASP.NET MVC, Razor, WPF, or WinForms). Communication: English at a B2+ level for technical documentation and team collaboration. Nice to Have Experience with Infrastructure as Code (Terraform or Bicep). Knowledge of Docker and Kubernetes (AKS). Background in migrating monoliths to microservices. Azure Developer Associate certification. What We Offer Impact: Real influence on the architecture and the cloud migration roadmap. Autonomy: Direct collaboration with Tech Leads and Architects in a flat structure. Modern Stack: Opportunity to work with the latest .NET versions (6/8) and React. Efficiency: Fast technical onboarding with immediate access to repos, CI/CD pipelines, and monitoring tools. Flexible Hybrid Model: Remote-first approach with only 7 planned days in the Kraków office per month. Benefits : Luxmed and Multisport Card