.NET Developer

🏢 Summary: The role involves developing and maintaining scalable full-stack web applications using .NET and modern frontend frameworks. You will design robust Web APIs, optimize databases, and implement clean, testable code within CI/CD-driven environments. The position requires active participation in the full software development lifecycle for international projects. 🗂️ Requirements: Minimum 3 years commercial experience with .NET (C#, Web API, Entity Framework), Proficiency in Angular or React, Strong knowledge of JavaScript, HTML, CSS, Experience with SQL Server or PostgreSQL, Understanding of Unit Testing, Experience with Git, Experience with CI/CD pipelines, Knowledge of design patterns, Knowledge of software development best practices, Fluent English (min. B2), Availability for hybrid work mode 📃 Skills: .NET, C#, WebAPI, EntityFramework, Angular, React, JavaScript, HTML, CSS, SQL, SQLServer, PostgreSQL, UnitTesting, Git, CI/CD 🏢 Description: As a member of our development team, you will be responsible for building scalable web applications, designing robust APIs, and creating intuitive user interfaces. We value clean code, analytical thinking, and a proactive approach to technology. Our expectations: Minimum 3 years of commercial experience in .NET (C#, Web API, Entity Framework). Proficiency in Angular or React, along with JavaScript, HTML, CSS, and modern frontend libraries. Strong experience with relational databases such as SQL Server or PostgreSQL. Solid understanding of Unit Testing, Git, and CI/CD pipelines. Practical knowledge of design patterns and software development best practices. A collaborative mindset and the ability to explain complex technical issues clearly. Strong analytical skills and a "get it done" attitude. Fluent English (min. B2) for smooth collaboration with international partners. Open to work in hybrid mode. Main responsibilities: You will design, develop, and maintain scalable full-stack applications using .NET and modern frontend frameworks (Angular/React) for diverse client projects. You will be responsible for writing clean, testable code and implementing unit tests to ensure the highest software performance and reliability. You will work closely with cross-functional teams to architect robust Web APIs and optimize database schemas while following industry best practices and design patterns. You will actively participate in the full software development life cycle, including CI/CD processes and version control management, to ensure seamless project delivery.

🏢 Summary: Full-stack freelance role focused on building scalable, cloud-native applications using .NET and Angular within the Azure ecosystem. The position involves translating complex business requirements into high-quality software solutions while applying modern architectural patterns and Agile delivery practices. The contract is project-based B2B for an initial 12-month period. 🗂️ Requirements: 4+ years experience with .NET technologies (C#, .NET Core, EF/ORM, WCF), 3+ years experience with Angular or strong React background with recent Angular experience, 2+ years hands-on experience with Azure services (Functions, Logic Apps, Web Apps), Advanced knowledge of architectural and design patterns, Experience with SOAP and REST web services, Experience with SQL and SQL Server, Experience with Git and CI/CD pipelines, Experience with Unit Testing, Fluent English 📃 Skills: .NET, .NETCore, C#, EntityFramework, ORM, WCF, Angular, React, Azure, Functions, LogicApps, WebApps, SQL, SQLServer, Git, CI/CD, SOAP, REST, Agile, UnitTesting 🏢 Description: Join an international team of experts delivering high-impact software solutions for global clients. In this role, you will work in a full-stack capacity, translating complex business requirements into scalable, cloud-native applications. You will collaborate with top-tier professionals to design and implement innovative solutions that address real-world engineering challenges while ensuring the highest industry standards. Form of cooperation: freelance project-specific B2B contract for an initial period of approximately 12 months. Tech stack: Backend: .NET / .NET Core, C#, Entity Framework (or other ORM), WCF, SOAP/REST APIs. Frontend: Angular (primary), React. Cloud: Azure (Functions, Logic Apps, Web Apps, SQL Server). Data: SQL Server. DevOps/Tools: Git, CI/CD, Agile, Unit Testing. Requirements: 4+ years of professional experience with .NET technologies (C#, .NET Core, EF/ORM, WCF) 3+ years of experience in Angular (or strong React background with recent Angular experience) 2+ years of hands-on experience with Azure services (e.g., Functions, Logic Apps, Web Apps) Advanced knowledge of Architectural and Design Patterns Proficiency in Web Services (SOAP/REST) and SQL Experience with Git, Continuous Integration, and Continuous Delivery pipelines Fluent English (written and spoken) for effective international communication Ideally, you’ll also have: Azure Cloud certifications Main responsibilities: Full-Stack Development: Address complex software engineering problems using both object-oriented and functional programming styles. Quality Assurance: Maintain high standards of code quality and testing through Clean Code and Unit Testing practices. Cloud Engineering: Design and develop scalable solutions utilizing a wide range of Azure-hosted services and tools. Agile Delivery: Implement Agile methodologies and modern software delivery techniques, including CI/CD and automated deployment. Professional Growth: Proactively adopt new technologies and frameworks within the Azure Cloud ecosystem to drive project success.

🏢 Summary: The role involves developing and maintaining an enterprise-grade web application within the .NET ecosystem, with a strong focus on backend development and system architecture. You will design and enhance REST APIs, implement business logic, and integrate modern .NET Core solutions with legacy .NET Framework components. The position emphasizes scalable architecture, database optimization, and high code quality through comprehensive testing. 🗂️ Requirements: 5+ years of experience in .NET development, Strong expertise in .NET Core and backend systems, Experience designing and building REST APIs, Hands-on experience with Entity Framework Core, Experience with relational databases, especially SQL Server, Understanding of software architecture and design patterns, Experience working with .NET Framework 4.8, Experience with unit, integration, and end-to-end testing, Ability to integrate and maintain backend services, Basic knowledge of React or experience collaborating with frontend teams 📃 Skills: .NET, C#, ASP.NET, REST, Swagger, OpenAPI, EntityFramework, SQLServer, SQLite, React, xUnit, NUnit, AI, Copilot, ChatGPT 🏢 Description: Additional information The project focuses on the development and maintenance of an enterprise-grade web application built on the .NET ecosystem, with a strong emphasis on backend and system architecture. The main responsibility is to design and enhance REST APIs and business logic , including integration with existing components based on .NET Framework 4.8. The system relies on relational databases (SQL Server) and ORM solutions such as Entity Framework Core, with a strong focus on quality through multi-level testing. The role also involves collaboration with the frontend layer (React), although it is not the primary focus. The environment requires a high level of autonomy, technical decision-making, and a proactive approach to improving the existing architecture. You’re ideal for this role if you: Have 5+ years of experience in .NET development, with strong expertise in .NET Core and backend systems Are confident in designing and building REST APIs, including architecture and best practices (e.g., Swagger/OpenAPI) Have hands-on experience with Entity Framework Core and relational databases such as SQL Server Understand software architecture, design patterns, and how to build scalable, maintainable systems Are familiar with legacy environments, including .NET Framework 4.8, and can work across modern and existing solutions Have solid experience with testing (unit, integration, end-to-end) and care about code quality Have basic knowledge of React or are comfortable working closely with frontend teams Use AI tools (e.g., Copilot, ChatGPT) to improve development efficiency Take ownership of your work and proactively identify improvements rather than waiting for tasks Your day-to-day responsibilities include:​ Designing, developing, and maintaining backend services using .NET Core Building and enhancing REST APIs, ensuring performance, scalability, and clear documentation (Swagger/OpenAPI) Integrating new features with existing systems based on .NET Framework 4.8 Implementing business logic and ensuring consistency across application layers Working with databases (SQL Server, SQLite) and optimizing data access with Entity Framework Core Writing and maintaining tests (unit, integration, end-to-end) to ensure high code quality Collaborating with frontend developers (React) to ensure smooth end-to-end functionality Participating in architectural discussions and contributing to technical decisions Identifying areas for improvement and proactively proposing enhancements Using AI tools to streamline development and increase productivity

🏢 Summary: Full-stack developer role focused on designing, developing, and maintaining web applications using Angular and .NET within an NX monorepo architecture. The position involves building RESTful APIs and microservices, creating responsive front-end interfaces, and ensuring high code quality through testing and CI/CD practices. The role emphasizes modern architectural principles, performance optimization, and secure application development. 🗂️ Requirements: Minimum 5 years of full-stack development experience with Angular and .NET, Strong proficiency in C# and .NET Core/Framework, Experience with Entity Framework and LINQ, Solid experience with Angular (v12+) and TypeScript, Hands-on experience with RxJS, Hands-on experience with NX monorepo architecture, Experience writing unit and integration tests with Jest, Experience with DevExtreme component library, Proficiency with Visual Studio, Experience with Git and Azure DevOps Services, Experience with SQL Server and query optimization, Knowledge of REST API design and HTTP standards, Understanding of software design patterns and SOLID principles, Bachelor’s degree in Computer Science, Engineering, or related field or equivalent experience 📃 Skills: Angular, TypeScript, RxJS, NgRx, .NET, C#, EntityFramework, LINQ, SQLServer, PostgreSQL, Jest, Git, AzureDevOps, VisualStudio, DevExtreme, NX, REST, HTTP 🏢 Description: The primary objective of this role is to design, develop, and maintain full-stack web applications using Angular and .NET technologies while adhering to modern architectural best practices. Main Responsibilities: Design, develop, and maintain full-stack web applications using Angular and .NET in an NX monorepo architecture. Develop RESTful APIs and microservices using .NET Core/Framework, following Clean Architecture principles. Build responsive, user-friendly interfaces with Angular, incorporating modern patterns like RxJS and NgRx. Work with relational databases like SQL Server and PostgreSQL, designing efficient data models. Write comprehensive unit and integration tests using Jest for maintaining high code quality. Manage version control with Git and oversee CI/CD pipelines in Azure DevOps Services. Participate in code reviews to improve code quality and team practices. Collaborate with product managers, UX designers, and other developers to deliver solutions on time. Contribute to optimizing application performance and ensuring security best practices. Key Requirements: Minimum 5 years of experience in full-stack development with Angular and .NET. Strong proficiency in C#, .NET Core/Framework, Entity Framework, and LINQ. Solid experience with Angular (v12+), TypeScript, and RxJS. Hands-on experience with NX monorepo structure. Proficiency with Jest for writing unit and integration tests. Experience with the DevExtreme component library. Proficiency with Visual Studio for .NET development. Hands-on experience with Git and Azure DevOps Services. Experience with SQL Server and optimized queries. Knowledge of REST API design and HTTP standards. Understanding of software design patterns and SOLID principles. Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience). Nice to Have: Experience in agile methodologies. Familiarity with cloud services like Azure or AWS. Exposure to frontend testing frameworks like Jasmine.

🏢 Summary: The role involves designing, developing, and maintaining applications on the .NET platform, including building new solutions and optimizing existing systems. It focuses on delivering high-quality, secure, and scalable software aligned with business needs in an international environment. The position requires active participation in architecture design, performance optimization, and continuous integration and deployment processes. 🗂️ Requirements: Minimum 3 years of experience in .NET development, Knowledge of MVC, Knowledge of REST API, Experience in team-based software development, Strong knowledge of MS SQL, Strong knowledge of ElasticSearch, Experience with Continuous Integration tools, Experience with Continuous Delivery approach, Knowledge of unit testing, Knowledge of integration testing, Very good command of English 📃 Skills: .NET, MVC, REST, MS SQL, ElasticSearch, Git, TeamCity, CI, CD, UnitTesting, IntegrationTesting 🏢 Description: Your responsibilities Design, create and maintain applications using the .NET platform and environment Understand requirements and transform them into functional applications in line with business objectives Maintain and upgrade existing applications and fix issues Rewriting/making changes in existing code structure to increase efficiency and performance Ensure error-free code that adheres to best coding practices Test, monitor, and make better solutions through incremental updates/new features/app optimization Identify bottlenecks and address issues to ensure the best performance Create architecture, specifications, and user interfaces of .Net applications Innovate and build high-quality software solutions leveraging the versatility of the .NET platform Implement best practices and methodologies for security, quality, and development approach Our requirements Min. 3 years of experience in working in the .NET environment; Knowledge of MVC, Rest API; Experience in team software development; Good knowledge of MS SQL and ElasticSearch; Using Continuous Integration tools (Git,Team City) and the Continuous Delivery approach; Knowledge of unit and integration tests; Very good command of the English language (work as part of an international team); Optional Knowledge of Umbraco, Angular, AWS This is how we work on a project Clean Code code quality measures code review design patterns static code analysis Continuous Deployment Continuous Integration Development opportunities we offer conferences abroad conferences in Poland development budget external training industry-specific e-learning platforms intracompany training mentoring soft skills training space for experimenting substantive support from technological leaders support of IT events technical knowledge exchange within the company the company supports open source projects time for development of your ideas What we offer Opportunities for constant development and work on exciting projects, Working in an international environment, English lessons, Attractive remuneration in Euro, Flexible working hours, Fully or partially paid training and development. Benefits sharing the costs of sports activities sharing the costs of foreign language classes sharing the costs of professional training & courses remote work opportunities flexible working time integration events corporate gym corporate sports team corporate library no dress code coffee / tea drinks parking space for employees leisure zone sharing the costs of tourist services sharing the costs of tickets to the movies, theater employee referral program charity initiatives family picnics

🏢 Summary: Fullstack Developer role focused on building and enhancing dynamic web applications using .NET on the backend and React on the frontend. The position involves developing robust, high-performance solutions, integrating APIs, and resolving complex technical issues within a collaborative team environment. Strong emphasis is placed on delivering seamless end-to-end functionality. 🗂️ Requirements: 5+ years of fullstack development experience, .NET backend expertise, Strong React knowledge, Experience with WCF and REST APIs, Database management experience, Proficiency in HTML, JavaScript, CSS, Understanding of message queues, Fluent English communication 📃 Skills: .NET, C#, React, REST, WCF, SQL, HTML, JavaScript, CSS, Databases, MessageQueues, English 🏢 Description: Summary: The ideal candidate is expected to function as a Fullstack Developer, contributing both front-end and back-end functionalities with a strong focus on .NET and React technologies. The primary goal is to enhance the team's capabilities in developing seamless, robust applications. Main Responsibilities: Engage in full-stack development to create dynamic web applications. Implement the front-end components using React. Develop back-end services using .NET. Communicate effectively with team members and stakeholders in English. Investigate and resolve complex technical problems proactively. Collaborate with team members to enhance application performance and usability. Key Requirements: 5+ years of experience in fullstack development. Expertise in .NET for backend development. Strong understanding of React for frontend development. Fluent communication skills in English. Knowledge of Web APIs (WCF and REST APIs). Familiarity with database management. Competence in HTML, JavaScript, and CSS. Understanding of message queues. Nice to Have: Experience with cloud services or platforms. Familiarity with CI/CD practices. Exposure to Agile methodologies.

🏢 Summary: Fullstack Developer role focused on building and enhancing dynamic web applications using .NET on the backend and React on the frontend. The position involves developing robust services, implementing responsive UI components, and resolving complex technical issues. The goal is to strengthen the team’s capability to deliver high-performance, scalable applications. 🗂️ Requirements: 5+ years of fullstack development experience, .NET expertise for backend development, Strong React knowledge for frontend development, Experience with Web APIs (WCF, REST), Database management experience, Proficiency in HTML, JavaScript, CSS, Understanding of message queues 📃 Skills: .NET, React, WCF, REST, WebAPI, HTML, JavaScript, CSS, SQL, Databases, MessageQueues 🏢 Description: Summary: The ideal candidate is expected to function as a Fullstack Developer, contributing both front-end and back-end functionalities with a strong focus on .NET and React technologies. The primary goal is to enhance the team's capabilities in developing seamless, robust applications. Main Responsibilities: Engage in full-stack development to create dynamic web applications. Implement the front-end components using React. Develop back-end services using .NET. Communicate effectively with team members and stakeholders in English. Investigate and resolve complex technical problems proactively. Collaborate with team members to enhance application performance and usability. Key Requirements: 5+ years of experience in fullstack development. Expertise in .NET for backend development. Strong understanding of React for frontend development. Fluent communication skills in English. Knowledge of Web APIs (WCF and REST APIs). Familiarity with database management. Competence in HTML, JavaScript, and CSS. Understanding of message queues. Nice to Have: Experience with cloud services or platforms. Familiarity with CI/CD practices. Exposure to Agile methodologies.

🏢 Summary: Software development role focused on building and maintaining .NET-based solutions, designing scalable architectures, and collaborating with stakeholders in an Agile environment. The position involves end-to-end development, REST API integration, SQL Server database design, code quality practices, and continuous improvement initiatives. 🗂️ Requirements: 3+ years of experience with .NET 4.8+, Experience with .NET Core, Knowledge of Microsoft SQL Server, Experience with relational database design, Advanced SQL skills, Understanding of OOP principles, Knowledge of clean architecture design patterns, Experience building and consuming REST APIs, Proficiency with Visual Studio, Proficiency with VS Code, Experience with GitLab, Understanding of DevOps practices, English proficiency at C1 level 📃 Skills: .NET, .NETCore, SQL, SQLServer, OOP, REST, VisualStudio, VSCode, GitLab, DevOps, eFront, WebSphereTX, Agile, Scrum 🏢 Description: Key Responsibilities End-to-End Development: Design logical data models and build robust software solutions aligned with a well-defined, multi-year product roadmap. Technical Design & Innovation: Proactively propose innovative architectural enhancements through controlled proof-of-concepts (spikes) and ensure all solutions adhere to modern software security standards. Collaboration & Delivery: Work hand-in-hand with business stakeholders to translate functional requirements into efficient technical specs. Participate in workload estimation, planning, and proactive status reporting. Code Quality & Mentorship: Maintain high engineering standards by conducting thorough peer code reviews, ensuring excellent test coverage, and managing application source code configuration. Team & Culture: Foster a friendly, supportive environment focused on continuous learning, knowledge-sharing, and team-wide upskilling. Requirements Technical Expertise: 3+ years of professional experience working with .NET 4.8+ and .NET Core . Strong knowledge of Microsoft SQL Server , relational database design (ER models), and advanced SQL. Solid grasp of Object-Oriented Programming ( OOP ) principles and clean architecture design patterns. Hands-on experience building and consuming REST APIs . Proficiency with development and version control tools ( Visual Studio, VS Code, GitLab ). Soft Skills & Methodology: A proactive, problem-solving mindset with a collaborative, team-player attitude. Foundational understanding of DevOps practices. Fluency in English (minimum C1) , with strong written and verbal communication skills. Nice to Have Direct development or configuration experience with the eFront FIA platform (highly advantageous). Familiarity with WebSphere TX . Prior experience working within an Agile/Scrum framework.

🏢 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 .NET role focused on maintaining a legacy platform and developing a new cloud-native enterprise application processing large volumes of business documents and integrating with multiple services. The position involves full-stack development, Azure cloud technologies, API integration, performance analysis, and collaboration in an international Agile environment. 🗂️ Requirements: Experience with .NET Framework, Experience with .NET Core, Knowledge of Azure Functions, Knowledge of Azure App Services, Knowledge of Azure Storage Accounts, Knowledge of Application Insights, Experience with SOAP services, Experience with REST services, Experience with SoapUI, Experience with Postman, Experience with Swagger, Experience with HTTP files in VS Code, Experience in performance and scalability analysis, Ability to onboard into complex applications and reverse engineer systems, Ability to conduct technical discussions with clients, Experience working in Agile environments, Ability to work in international and distributed teams 📃 Skills: .NET, .NETCore, Azure, AzureFunctions, AppServices, ServiceBus, StorageAccounts, ApplicationInsights, SOAP, REST, SoapUI, Postman, Swagger, VSCode, HTTP, Scrum, SAFe, Copilot, DevExpress, OfficeFileApi, Blazor 🏢 Description: Tech stack: .NET experience in both .NET Framework and .NET Core Azure Public – knowledge from the Azure Developer 204 course: Azure Functions App Services Service Bus (nice‑to‑have) Storage Accounts, Application Insights Working with SOAP and REST services: SoapUI Postman Swagger – generation of API definitions Experience with HTTP files in VS Code Requirements: Experience in performance, load, and scalability analysis. Onboarding into complex applications (reverse engineering). Excellent communication with both the business side and the development team. Confidence and the ability to make decisions. Ability to conduct technical discussions with the client and translate complex topics into simple terms. High collaborative culture and a strong team‑oriented mindset. Proactivity and taking ownership of the assigned area. Ability to work in an international and distributed environment. Pragmatic problem‑solving approach – focusing on finding solutions rather than over‑complicating issues. Good work organization and the ability to prioritize tasks and problems. Openness to feedback and constructive discussion. Ability to work in an Agile environment (Scrum, SAFe) with a practical attitude toward frameworks, without dogmatic adherence to processes. Sense of urgency – concentrating on the most important business and technical problems. Nice to have: Experienced in using AI tools (Copilot) in day-to-day workflow Experience with DevExpress OfficeFileApi and Blazor Project description: We are looking for a seasoned .NET professional to join a high‑impact team that maintains a legacy platform while simultaneously building a brand‑new, cloud‑native application. The project is a full‑stack, enterprise‑grade solution that processes large volumes of business documents (PDF, Word) and integrates with a variety of internal and external services.