.Net Developer (desktop)

🏢 Summary: 12-month B2B contract for an experienced .NET Developer to design, develop, and enhance business-critical IT systems, combining software development with system and data analysis. The role involves building web applications, working with data warehouse processes, and translating business requirements into technical solutions in cooperation with stakeholders. Remote work with occasional visits to Łódź office. 🗂️ Requirements: Minimum 3 years of programming experience in IT projects, .NET and C# proficiency, Experience with SQL and SQL Server Integration Services, Experience with HTML and MVC.NET, Knowledge of JavaScript, jQuery, jQuery UI, HTML5, CSS3, Experience in web application development, Knowledge of Visual Studio Ultimate 2013, Understanding of unit testing and test automation, Knowledge of design patterns and object-oriented programming, Experience in designing and developing information systems for large-scale or financial institutions, Experience in business and system requirements analysis, English sufficient for technical documentation, Ability to work with Large Language Models 📃 Skills: .NET, C#, SQL, SSIS, HTML, MVC, JavaScript, jQuery, jQueryUI, HTML5, CSS3, VisualStudio, OOP, TestAutomation, LLMs 🏢 Description: PROJECT DETAILS: Contract B2B , 12 months + extensions Rate: up to 125 PLN/h nett + VAT Working model : remote with occasional visits to Łódź’s office (2 times per month) We are looking for an experienced .NET Developer to join a project focused on developing, implementing, and improving business-critical IT systems. This role combines hands-on software development with business and system analysis, data-related activities, documentation, testing, and cooperation with internal stakeholders and external vendors. The project involves IT systems that are partly based on Oracle technologies and data warehouse processes. The person in this role will work closely with business users to gather, analyse, and refine requirements, translate business concepts into clear system specifications, and support the delivery of high-quality technical solutions. RESPONSIBILITIES : Leading design and implementation activities within IT systems based on Oracle-related technologies. Developing and maintaining web applications using .NET, C#, SQL, HTML, JavaScript, jQuery, and related technologies. Cooperating with business users to gather, analyse, and clarify requirements for data and system solutions. Translating general business concepts into detailed functional and technical requirements. Participating in internal software testing and supporting test automation activities. Creating and updating technical and functional system documentation. Supporting the design of new solutions and contributing to future system development directions. Implementing improvements related to data quality across systems and applications, and exporting data to a data warehouse. Reviewing and providing feedback on technical specifications, project documentation, technical documentation, and administrative documentation prepared by external teams. Working with business stakeholders, internal clients, and external vendors. REQUIREMENTS : Minimum 3 years of programming experience in IT projects. Very good knowledge of .NET and C#. Experience with SQL, SQL Server Integration Services, HTML, and MVC.NET. Knowledge of JavaScript, jQuery, jQuery UI, HTML5, and CSS3. Experience in developing web applications. Knowledge of Visual Studio Ultimate 2013. Understanding of unit testing and test automation processes. Good knowledge of design patterns and object-oriented programming principles. Experience in designing and developing information systems for financial institutions or organisations with a similar scale, complexity, and IT quality requirements. Knowledge of business and system requirements analysis. Strong analytical thinking and the ability to formulate clear and precise conclusions. Ability to cooperate with business clients, internal stakeholders, and external suppliers. High level of independence, good work organisation, goal orientation, and consistency in task delivery. Strong communication skills, curiosity, and negotiation abilities. English is sufficient for working with technical documentation and professional literature. Ability to work with Large Language Models. Nice to Have Basic knowledge of UX design. Knowledge of Agile and XP methodologies. Knowledge of PL/SQL and Oracle databases. Practical experience with CASE tools, such as Sparx Systems Enterprise Architect. Knowledge of UML. Experience working in a matrix organisation. Knowledge of ITIL.

🏢 Summary: 100% remote B2B opportunity to lead a development team in building and maintaining scalable applications within an agile environment. The role combines hands-on full-stack development with strategic technical leadership, focusing on robust system architecture and faster delivery of new solutions. Long-term cooperation with a two-stage recruitment process including a technical test. 🗂️ Requirements: Proficiency in .NET, Proficiency in C#, Experience in full-stack development, Experience with front-end technologies, Experience with document-based databases, Knowledge of event-based messaging frameworks, Experience with cloud services, Experience with containerization, Ability to lead development teams, Experience working in agile environment 📃 Skills: .NET, C#, Angular, MongoDB, Cloud, Docker, Microservices, REST, Git 🏢 Description: Work model: 100% remote Start date: Flexible Rate: up to 215 PLN/h netto + VAT Contract : B2B, long-term cooperation (12-month contract up front + extensions) Recruitment process : 2 stages, including a technical test estimated to take 2-4 hours. Summary: The role focuses on leading the development team to create new solutions and maintain systems within an agile environment, emphasizing the importance of robust applications and strategic direction. Main Responsibilities: Lead the development team in creating and maintaining applications. Adopt wider technology practices and address the speed of new application delivery. Engage in hands-on development while guiding the strategic direction of projects. Collaborate with teams to gather specifications and perform technical analysis. Navigate complex systems and ensure they are built to scale. Manage developer quality and capacity amidst organizational constraints. Key Requirements: Proficient in .NET and C#. Experience with full-stack development, including front-end technologies. Familiarity with document-based databases. Knowledge of event-based messaging frameworks. Experience with cloud services and containerization. Nice to Have: Prior experience in the banking or financial services sector. Familiarity with Angular or other modern front-end frameworks. Experience with MongoDB or similar environments. Other Details: Environment: .NET, C#, Angular, MongoDB, moving towards cloud solutions. Team Structure: Full Stack Developers working closely with Business Analysts.

🏢 Summary: Senior .NET Developer role focused on designing, developing, and maintaining .NET-based applications in a long-term B2B contract. The position involves system design, unit testing, test automation, and collaboration in Agile teams, with partial on-site presence in Łódź. The role requires strong experience with modern development tools and large language models (LLM). 🗂️ Requirements: 5+ years of commercial experience in software development, Advanced knowledge of .NET, Experience with LLM models, Experience with React or Angular, Experience with MSSQL, Proficiency with Visual Studio, Proficiency with Git, Experience with JIRA, Experience with MSBuild, Experience with TeamCity, Experience with PowerShell, Ability to create unit tests and test automation, Experience working in Agile methodologies, English sufficient to understand technical documentation 📃 Skills: .NET, C#, React, Angular, MSSQL, VisualStudio, Git, JIRA, MSBuild, TeamCity, PowerShell, LLM, Agile 🏢 Description: Hello :) Poszukujemy doświadczonego Programisty .NET na poziomie seniorskim, który posiada zaawansowaną znajomość technologii .NET. Idealny kandydat ma doświadczenie w realizacji projektów informatycznych oraz umiejętność pracy zarówno w zespole, jak i samodzielnie. What we offer: Long Term B2B Contract Stawka: 140 PLN/ H + VAT Remote ( wizyta 2 razy na miesiąc biura w Lodzi) Główne obowiązki: Tworzenie i rozwijanie aplikacji opartych na .NET. Testowanie modułowe oraz automatyzacja testów. Analiza wymagań użytkowników oraz projektowanie systemów. Współpraca z zespołem w metodach Agile. Utrzymywanie dokumentacji projektowej. Wykorzystywanie narzędzi takich jak Visual Studio i Git. Wymagania kluczowe: Umiejętność pracy z modelami językowymi LLM. Bardzo dobra znajomość technologii .NET. Doświadczenie w pracy w zespole oraz samodzielnej. Dobra znajomość React/Angular. Doświadczenie 5+ lat w branży. Znajomość narzędzi MSSQL, Visual Studio, Git, JIRA, Msbuild, TeamCity, PowerShell. Znajomość języka angielskiego na poziomie umożliwiającym zrozumienie dokumentacji technicznej. Umiejętności mile widziane: Potwierdzenie umiejętności programowania testami kompetencji. Certyfikaty: MCTS: .NET Framework 4.0, ASP.NET Applications.

🏢 Summary: Senior .NET Developer role focused on building and enhancing .NET-based applications, including system design, unit testing, and test automation. The position involves working with LLM models, collaborating in Agile teams, and maintaining technical documentation. Long-term B2B contract with predominantly remote work. 🗂️ Requirements: 5+ years of commercial experience in software development, Very strong knowledge of .NET, Experience with LLM models, Experience with React or Angular, Experience with MSSQL, Proficiency with Visual Studio, Proficiency with Git, Experience with JIRA, Knowledge of Msbuild, Experience with TeamCity, Knowledge of PowerShell, Experience with unit testing and test automation, Experience working in Agile methodologies 📃 Skills: .NET, C#, LLM, React, Angular, MSSQL, VisualStudio, Git, JIRA, Msbuild, TeamCity, PowerShell, Agile, UnitTesting, ASP.NET 🏢 Description: Hello :) Poszukujemy doświadczonego Programisty .NET na poziomie seniorskim, który posiada zaawansowaną znajomość technologii .NET. Idealny kandydat ma doświadczenie w realizacji projektów informatycznych oraz umiejętność pracy zarówno w zespole, jak i samodzielnie. What we offer: Long Term B2B Contract Stawka: 140 PLN/ H + VAT Remote ( wizyta 2 razy na miesiąc biura w Lodzi) Główne obowiązki: Tworzenie i rozwijanie aplikacji opartych na .NET. Testowanie modułowe oraz automatyzacja testów. Analiza wymagań użytkowników oraz projektowanie systemów. Współpraca z zespołem w metodach Agile. Utrzymywanie dokumentacji projektowej. Wykorzystywanie narzędzi takich jak Visual Studio i Git. Wymagania kluczowe: Umiejętność pracy z modelami językowymi LLM. Bardzo dobra znajomość technologii .NET. Doświadczenie w pracy w zespole oraz samodzielnej. Dobra znajomość React/Angular. Doświadczenie 5+ lat w branży. Znajomość narzędzi MSSQL, Visual Studio, Git, JIRA, Msbuild, TeamCity, PowerShell. Znajomość języka angielskiego na poziomie umożliwiającym zrozumienie dokumentacji technicznej. Umiejętności mile widziane: Potwierdzenie umiejętności programowania testami kompetencji. Certyfikaty: MCTS: .NET Framework 4.0, ASP.NET Applications.

🏢 Summary: Long-term remote B2B contract for a technical leader responsible for guiding a development team in building and maintaining scalable applications within an agile environment. The role combines hands-on .NET development with strategic oversight, technical analysis, and quality management. Focus is on delivering robust, cloud-oriented solutions and improving application delivery speed. 🗂️ Requirements: Proficiency in .NET and C#, Experience in full-stack development, Experience with front-end technologies, Experience with document-based databases, Knowledge of event-based messaging frameworks, Experience with cloud services, Experience with containerization, Ability to lead development team, Experience in building scalable systems 📃 Skills: .NET, C#, Angular, MongoDB, Cloud, Docker, Messaging, SQL 🏢 Description: Work model: 100% remote Start date: 30.06.2026 Rate: 160-180 PLN/h netto + VAT Contract : B2B, long-term cooperation (12-month contract up front + extensions) Recruitment process : 2 stages, including a technical test estimated to take 2-4 hours. Summary: The role focuses on leading the development team to create new solutions and maintain systems within an agile environment, emphasizing the importance of robust applications and strategic direction. Main Responsibilities: Lead the development team in creating and maintaining applications. Adopt wider technology practices and address the speed of new application delivery. Engage in hands-on development while guiding the strategic direction of projects. Collaborate with teams to gather specifications and perform technical analysis. Navigate complex systems and ensure they are built to scale. Manage developer quality and capacity amidst organizational constraints. Key Requirements: Proficient in .NET and C#. Experience with full-stack development, including front-end technologies. Familiarity with document-based databases. Knowledge of event-based messaging frameworks. Experience with cloud services and containerization. Nice to Have: Prior experience in the banking or financial services sector. Familiarity with Angular or other modern front-end frameworks. Experience with MongoDB or similar environments. Other Details: Environment: .NET, C#, Angular, MongoDB, moving towards cloud solutions. Team Structure: Full Stack Developers working closely with Business Analysts.

🏢 Summary: Technical leadership role focused on driving the development and maintenance of scalable .NET-based applications in an agile environment. The position combines hands-on full-stack development with strategic oversight of architecture, quality, and delivery speed. It involves close collaboration with cross-functional teams to build robust, cloud-oriented solutions. 🗂️ Requirements: Proficiency in .NET and C#, Experience in full-stack development, Knowledge of front-end technologies, Experience with document-based databases, Knowledge of event-based messaging frameworks, Experience with cloud services, Experience with containerization, Ability to design scalable systems, Experience leading development teams 📃 Skills: .NET, C#, Angular, MongoDB, Cloud, Docker, Kubernetes, Microservices, REST, Git 🏢 Description: Work model: 100% remote Start date: 30.06.2026 Rate: 160-180 PLN/h netto + VAT Contract : B2B, long-term cooperation (12-month contract up front + extensions) Recruitment process : 2 stages, including a technical test estimated to take 2-4 hours. Summary: The role focuses on leading the development team to create new solutions and maintain systems within an agile environment, emphasizing the importance of robust applications and strategic direction. Main Responsibilities: Lead the development team in creating and maintaining applications. Adopt wider technology practices and address the speed of new application delivery. Engage in hands-on development while guiding the strategic direction of projects. Collaborate with teams to gather specifications and perform technical analysis. Navigate complex systems and ensure they are built to scale. Manage developer quality and capacity amidst organizational constraints. Key Requirements: Proficient in .NET and C#. Experience with full-stack development, including front-end technologies. Familiarity with document-based databases. Knowledge of event-based messaging frameworks. Experience with cloud services and containerization. Nice to Have: Prior experience in the banking or financial services sector. Familiarity with Angular or other modern front-end frameworks. Experience with MongoDB or similar environments. Other Details: Environment: .NET, C#, Angular, MongoDB, moving towards cloud solutions. Team Structure: Full Stack Developers working closely with Business Analysts.

🏢 Summary: Remote Full Stack .NET Developer role focused on building and maintaining enterprise-grade applications using Angular 20+ and ASP.NET Core (.NET 9+) within a Microsoft and Azure ecosystem. The position involves designing scalable solutions, integrating authentication and external systems, and deploying cloud-native applications using Docker, Kubernetes, and CI/CD pipelines. Long-term B2B project for EU citizens residing in Poland. 🗂️ Requirements: Strong commercial experience as Full Stack .NET Developer, Hands-on experience with Angular 20+, Very good knowledge of ASP.NET Core and modern .NET, Experience designing and developing RESTful APIs, Experience with Microsoft Azure services, Strong knowledge of Microsoft SQL Server, Experience with Entity Framework Core, Experience with Docker and containerized environments, Understanding of Kubernetes, Experience building and maintaining CI/CD pipelines, Strong SQL skills, Knowledge of authentication and authorization mechanisms including Azure AD, Experience in Agile environments, Very good English skills, EU citizenship, Residence in Poland 📃 Skills: Angular, ASP.NET, NET, C#, REST, Azure, MSAL, AzureAD, SQL, SQLServer, EntityFramework, Docker, Kubernetes, CI/CD, Vitest, xUnit, Moq, AzureDevOps 🏢 Description: In Cyclad, we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are currently looking for an experienced Full Stack .NET Developer to join a remote international team delivering enterprise-grade applications using modern Microsoft and Angular technologies. In this role, you will be responsible for designing, developing, and maintaining scalable applications while collaborating closely with cross-functional teams in an agile environment. Project information: Type of project: It services Office Location: Poland Work mode: Remote from Poland Budget: 120-140 PLN net/ h- B2B Project length: Long term Only candidates with citizenship in the European Union and residence in Poland Start date: ASAP (depending on candidate’s availability) Project scope: Design and develop enterprise applications using Angular 20+ on the front end and ASP.NET Core (.NET 9+) on the back end Implement standalone components and signals-based architecture to build responsive and maintainable user interfaces Integrate Azure MSAL authentication, RESTful APIs, and external systems Build and optimize data access layers using Entity Framework Core and manage relational data in Microsoft SQL Server Ensure application security through authentication, authorization, and data protection mechanisms based on Azure Active Directory Deploy and manage application environments using Docker, Kubernetes, and CI/CD pipelines Develop and maintain comprehensive unit and integration tests for both front-end and back-end components using Vitest, xUnit, and Moq Collaborate with cross-functional teams to maintain shared libraries and continuously improve product functionality based on user feedback Troubleshoot, debug, and optimize applications to ensure scalability, reliability, and high performance Participate actively in code reviews by reviewing and approving Pull Requests from team members Document project progress, architectural decisions, and implementation outcomes using Azure DevOps Boards and Wiki Contribute to continuous improvement initiatives and promote development best practices across the team Competence demands: Strong commercial experience as a Full Stack .NET Developer Proven hands-on experience with Angular and .NET technologies Very good knowledge of ASP.NET Core and modern .NET development practices Experience designing and developing RESTful APIs Practical experience with Microsoft Azure services and cloud-native applications Strong knowledge of Microsoft SQL Server and relational database design Experience with Entity Framework Core Experience working with Docker and containerized environments Good understanding of Kubernetes and container orchestration Experience building and maintaining CI/CD pipelines Strong SQL skills and experience optimizing database queries Understanding of authentication and authorization mechanisms, including Azure AD integrations Experience working in Agile development environments Strong communication and collaboration skills Proactive approach, ownership mindset, and ability to independently lead feature implementations High attention to detail and commitment to code quality Very good English skills, both written and spoken We offer: Remote working model from Poland Full-time job agreement based on b2b Private medical care with dental care (covering 70% of costs) Multisport card (also for an accompanying person ) Life insurance Recruitment process: Introductory call Technical interview Final decision

🏢 Summary: Full-time B2B contract for a .NET Developer to maintain and enhance an existing self-service portal based on legacy ASP.NET Web Forms. The role focuses on stabilizing, hosting, and gradually developing new features in a poorly documented codebase. The project runs until the end of 2026 with possible extensions and is fully remote. 🗂️ Requirements: Proficiency in ASP.NET Web Forms and classic .NET, Experience with IIS hosting and configuration, Strong understanding of legacy authentication methods, Ability to work with and stabilize poorly documented codebases, Experience maintaining and supporting existing web applications 📃 Skills: ASP.NET, WebForms, .NET, IIS, Authentication, SQL, T-SQL, MS SQL 🏢 Description: Industry: debt collection Remote work: 100% Project language: English FTE: full-time (if you're interested in part-time, it's also ok) Project length: until the end of 2026 + prolongations Start: ASAP Assignment type: B2B Remuneration: up to 180 PLN/h Job Summary: The .NET Developer will be primarily responsible for maintaining and developing an existing self-service portal used by customers and clients, which incorporates legacy code as well as newer components. Responsibilities: Maintain and stabilize an existing ASP.NET application, ensuring uptime and functionality. Perform IIS hosting and configuration for the application. Understand legacy authentication patterns to facilitate secure access. Work with poorly documented codebases, improving clarity and stability. Periodically develop new features as required by the project. Must Haves: Proficient in ASP.NET Web Forms / classic .NET technology (e.g., client_login.aspx). Experience with IIS hosting and configuration. Strong understanding of legacy authentication methods. Ability to read and stabilize poorly documented codebases. Nice to Have: Familiarity with newer development practices and components (e.g., ASP.NET MVC Core). Experience with MS SQL, including queries and stored procedures. Knowledge of application maintenance workflows.

🏢 Summary: Full-time remote B2B role for a .NET Developer to maintain and enhance an existing ASP.NET self-service portal in the debt collection industry. The position focuses on stabilizing legacy code, managing IIS hosting, and ensuring secure authentication, with occasional development of new features. Project runs until the end of 2026 with possible extension. 🗂️ Requirements: Proficiency in ASP.NET Web Forms / classic .NET, Experience with IIS hosting and configuration, Strong understanding of legacy authentication methods, Ability to read and stabilize poorly documented codebases 📃 Skills: ASP.NET, WebForms, .NET, IIS, Authentication 🏢 Description: Industry: debt collection Remote work: 100% Project language: English FTE: full-time (if you are interested in part-time, it’s also ok) Project length: until the end of 2026 + prolongations Start: ASAP Assignment type: B2B Remuneration: up to 180 PLN/h Job Summary: The .NET Developer will be primarily responsible for maintaining and developing an existing self-service portal used by customers and clients, which incorporates legacy code as well as newer components. Responsibilities: Maintain and stabilize an existing ASP.NET application, ensuring uptime and functionality. Perform IIS hosting and configuration for the application. Understand legacy authentication patterns to facilitate secure access. Work with poorly documented codebases, improving clarity and stability. Periodically develop new features as required by the project. Must Haves: Proficient in ASP.NET Web Forms / classic .NET technology (e.g., client_login.aspx). Experience with IIS hosting and configuration. Strong understanding of legacy authentication methods. Ability to read and stabilize poorly documented codebases. Nice to Have: Familiarity with newer development practices and components (e.g., ASP.NET MVC Core). Experience with MS SQL, including queries and stored procedures. Knowledge of application maintenance workflows.

🏢 Summary: Lead .NET Engineer role combining hands-on backend development with technical leadership, owning architecture, core platform services, APIs, and payment integrations in a distributed AWS environment. The position includes defining technical direction, mentoring engineers, driving CI/CD and operational excellence, and promoting AI-assisted development practices. After a short onboarding period in the US, the role is fully remote with long-term engagement in a strategic product initiative. 🗂️ Requirements: 6–10+ years of experience building and operating production software systems, Experience in Technical Lead or Lead Engineer role, Strong backend development experience with C# and .NET, Experience designing and operating distributed systems and microservices, Strong SQL and database design skills, Hands-on experience with AWS (SQS, DynamoDB, S3, ECS, Lambda), Experience owning and improving CI/CD pipelines, Experience in payments, financial services, or regulated environments, Working knowledge of React or Vue 📃 Skills: C#, .NET, AWS, ECS, Lambda, SQS, DynamoDB, S3, SQL, Microservices, REST, CI/CD, React, Vue, AI 🏢 Description: Lead .NET Engineer Remote 140–160 PLN/h B2B Full-time (FTE) *Project starts with a 2–3 week onboarding and training period in the US, followed by fully remote work. About the role We are looking for an experienced Lead .NET Engineer to take ownership of a squad responsible for core platform services, APIs, and payment integrations. In this role, you will combine hands-on software engineering with technical leadership. You will define technical direction, partner with Product on roadmap delivery, mentor engineers, and help drive the adoption of AI-assisted development practices across the software delivery lifecycle. Responsibilities Own squad-level architecture and technical decision-making. Lead the design, development, and operation of backend services and APIs. Ensure high standards of code quality, performance, security, and reliability. Drive incident management and operational excellence. Collaborate closely with Product Managers and stakeholders to deliver roadmap priorities. Mentor engineers through coaching, technical guidance, and regular feedback. Participate in hiring and team growth activities. Promote and implement AI-assisted development tools and best practices. Contribute to continuous improvement of engineering processes, CI/CD, and platform capabilities. Must-have requirements 6–10+ years of experience building and operating production software systems. Proven experience in a Technical Lead, Lead Engineer, or similar leadership role. Strong backend development experience with C#/.NET. Working knowledge of frontend technologies such as React or Vue. Experience designing and operating distributed systems and microservice architectures. Strong SQL and database design skills. Experience working within payments, financial services, or other regulated environments. Hands-on experience with AWS services, including: SQS DynamoDB S3 ECS Lambda Experience owning and improving CI/CD pipelines. Strong communication and stakeholder management skills. Nice to have Experience building large-scale payment platforms or fintech products. Previous people-management responsibilities. Experience with platform modernization and cloud transformation initiatives. Experience implementing AI-powered engineering tools and workflows. Tech Stack C# .NET AWS ECS Lambda SQS DynamoDB S3 SQL Microservices REST APIs CI/CD React / Vue AI-assisted Development What we offer Long-term engagement in a strategic product initiative. High-impact technical leadership role. Opportunity to shape engineering standards and architecture. Exposure to modern AI-assisted development practices. International environment and collaboration with US-based teams. Fully remote work after onboarding period in the US.