June 16, 2026

Backend Developer (.NET) in the EU

Senior • Hybrid

2,500 - 3,500 USD

Andersen is hiring a Backend Developer (.NET) in the EU for a project modernizing digital platforms and building scalable microservices-based solutions. 

 

The customer is an international financial services company focused on digital banking, payment solutions, and credit products across multiple European markets. The company operates in a technology-driven environment, developing scalable digital platforms, automated services, and modern payment infrastructure while actively investing in fintech innovation, cloud solutions, and data-driven technologies. 

 

The project is focused on modernizing an existing platform by transitioning from legacy architectures to a microservices and event-driven ecosystem. It includes developing new functionality in .NET and improving scalability, maintainability, and system flexibility. 

 

Responsibilities: 

  • Participating in the development of .NET-based microservices within a modern cloud-oriented architecture. 

  • Working on data-heavy backend features related to customer data management, data quality, and data synchronization. 

  • Contributing to data cleaning and migration activities, including work with SQL Server and legacy stored procedures. 

  • Designing and implementing services using event-driven architecture and event sourcing principles. 

  • Integrating backend services with NoSQL storage and search/indexing components. 

  • Supporting improvements to data anonymization and regulatory data handling processes. 

  • Collaborating with data analytics, QA, DevOps/Ops, and other engineering team members. 

  • Investigating and resolving service requests, defects, and production-related issues within the team’s scope. 

  • Participating in Agile/Scrum ceremonies, including sprint planning, daily standups, refinements, and reviews. 

  • Working with Azure DevOps boards, repositories, and pipelines as part of the delivery process. 

 

Must-haves: 

  • Commercial .NET / C# backend development experience for 4+ years. 

  • Strong expertise in C# and .NET Framework / .NET Core / .NET 8. 

  • Hands-on experience building microservice architectures. 

  • Experience with containerization. 

  • Practical experience with Azure Cosmos DB and/or other NoSQL storage. 

  • Solid understanding of event sourcing, CQRS and event-driven architecture. 

  • Experience with Azure Event Hub / Kafka or similar. 

  • Experience with SQL Server and legacy stored procedures for legacy layer work. 

  • Advanced SQL Server knowledge, including performance tuning. 

  • Experience on data-heavy projects, including data cleaning, migrations, data quality work, and building data pipelines. 

  • Comfortable with Azure DevOps as a toolset (boards, repos, pipelines). 

  • Proficiency in Git. 

  • Experience with CI/CD pipelines. 

  • Experience with unit testing. 

  • Level of English – from Upper-Intermediate and above. 

 

Nice to Have: 

  • Experience in FinTech / banking / regulated environments (payments, cards, lending, core banking). 

  • Practical knowledge of GDPR data requirements and experience working in regulated environments. 

  • Experience with Azure Data Factory. 

  • Familiarity with Databricks. 

  • Familiarity with Azure AI Search. 

  • Experience with Elastic Search suite (Elasticsearch, Kibana, Logstash or similar). 

  • Experience with IBM IIB / Enterprise Service Bus or similar integration tools. 

  • Experience with Enterprise Scheduler tools (Automic or similar). 

  • DevOps awareness: understanding of CI/CD, IaC to comfortably work in a pipeline-driven environment. 

  • Background in data quality / MDM / master data management projects. 

 

Reasons why this job would be interesting to you: 

  • Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. 

  • The opportunity to change the project and/or develop expertise in an interesting business domain. 

  • Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. 

  • Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. 

  • The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. 

  • Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. 

  • Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies). 

  • Certification compensation (AWS, PMP, etc). 

  • Referral program. 

  • Private health insurance and compensation for sports activities. 

 

Join us! 

Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy/pl  

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Belgrade, Serbia

1,700 - 2,800 USD

🏢 Summary: Backend Developer (.NET) role focused on building and migrating a travel platform from monolith to microservices, ensuring reliable API integrations and scalable booking processes. The position involves developing high-performance backend services, integrating multiple external systems, and supporting data synchronization across a distributed architecture. Work includes close collaboration within Agile teams and contribution to CI/CD and cloud-based infrastructure. 🗂️ Requirements: 3+ years experience with .NET, Strong experience with .NET Core, Strong experience with .NET Framework 4.8 (Web API), Experience with microservice architecture, Knowledge of Clean Architecture patterns, Experience with MediatR, Experience with SQL Server, Experience with MongoDB, Experience with Azure Service Bus or NServiceBus, Experience with CI/CD pipelines, Familiarity with Azure DevOps, English level Intermediate+ or higher 📃 Skills: .NET, .NETCore, .NETFramework, WebAPI, Microservices, CleanArchitecture, MediatR, SQLServer, MongoDB, AzureServiceBus, NServiceBus, AzureDevOps, CI/CD, Azure 🏢 Description: Andersen is hiring a Backend Developer (.NET) for a project developing a travel platform, ensuring API integrations, data synchronization, and reliable, scalable booking processes. The customer is a technology-driven company in the travel sector, providing a comprehensive booking and procurement platform for industry professionals. Its solutions support large transaction volumes, integrate with a wide network of partners, and offer tools that streamline operations and enhance productivity. Focused on innovation and scalability, the customer continues to expand its ecosystem, strengthen partnerships, and improve data accuracy to deliver a modern digital infrastructure for the travel value chain. The project is focused on developing a travel platform that integrates multiple external APIs into a unified system. It ensures reliable data synchronization and seamless booking processes to support scalable and high-performance partner connectivity. The position assumes 12 to 21 CET work schedule. Responsibilities: Developing and maintaining backend services in .NET 4.8 (Web API) and .NET Core as part of a large-scale migration from monolithic to microservice architecture. Collaborating with cross-functional teams to design and implement scalable, maintainable, and performant services using Clean Architecture and MediatR. Integrating with SQL Server and MongoDB as data backends. Working with Azure Service Bus (NServiceBus) and other Azure services such as Azure Functions and ADF (nice to have). Participating in Agile ceremonies (standups, sprint planning, retrospectives) within 2-week sprint cycles. Contributing to CI/CD practices using Azure DevOps (builds and pipelines). Collaborating via Jira, Confluence, GitHub, and Microsoft Teams. Must-haves: Experience with .NET for 3+ years, including strong experience with .NET Core and .NET Framework 4.8 (Web API). Deep understanding of microservice architecture, Clean Architecture patterns, and MediatR. Solid experience with SQL Server and MongoDB. Experience with Azure Service Bus / NServiceBus. Familiarity with CI/CD tools and pipelines (preferably Azure DevOps). Strong problem-solving skills and the ability to work independently. Level of English – from Intermediate+ and above. Nice-to-haves: Experience in frontend development. Experience with Azure Functions, Azure Data Factory (ADF), or other Azure ecosystem tools. Previous experience in the travel industry, particularly with backend services for hotel booking/search. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies); Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy Join us!

Healthcare

Andersen

Backend Developer (.NET) in the EU

Mid

Hybrid

2,500 - 3,800 USD

🏢 Summary: Backend Developer (.NET) role focused on enhancing and maintaining a mobile application built with .NET MAUI and integrated with an Azure backend. The position involves extending functionality, improving performance and reliability, and supporting features such as photo capture and history management. The project emphasizes backend development, mobile integration, and scalable Azure-based services. 🗂️ Requirements: 3+ years of backend development experience, .NET MAUI hands-on experience, Strong knowledge of C# and .NET 6/7/8, Experience with RESTful API integration, Understanding of MVVM and mobile app architecture, Experience with Azure App Services, Functions, and APIs, Experience with data handling, storage, and synchronization, English level Intermediate+ or higher 📃 Skills: C#, .NET, .NETMAUI, REST, Azure, AppServices, AzureFunctions, APIs, MVVM, SQL, Git 🏢 Description: Andersen is hiring a Backend Developer (.NET) in the EU for a project supporting and enhancing a mobile app with Azure backend, improving functionality, performance, and reliability. The customer is a global company specializing in the development of consumer diagnostic solutions with a focus on personal health and well-being. It combines scientific research, engineering, and user-centered design to create accurate and easy-to-use products for home use. The company operates internationally and continuously invests in innovation and quality to help individuals make informed health decisions. The project is focused on supporting and enhancing an existing mobile application built with .NET MAUI and integrated with a Microsoft Azure backend. It includes further development, maintenance, and improvement of application functionality and performance. Responsibilities: Extending existing functionality for pregnancy-related user journeys. Adapting app behavior based on sensitive contexts (e.g., suppressing irrelevant test-related content). Enabling users to capture and store photos of test results (pregnancy/ovulation). Providing history management (archiving, sorting, matching over time). Must-haves: Experience in backend development for 3+ years. Strong hands-on experience with .NET MAUI. Solid knowledge of C# / .NET (preferably .NET 6/7/8). Experience integrating mobile apps with RESTful APIs. Understanding of mobile app architecture (MVVM, modular apps). Experience with Azure-based backends (App Services, Functions, APIs, etc.). Experience with data handling, storage, and synchronization. Level of English – from Intermediate+ and above. Nice-to-haves: Experience with healthcare / regulated domains. Experience working with photo/media handling in mobile apps. Familiarity with privacy-sensitive features and UX logic. Previous experience in modular or scalable mobile systems. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies). Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Join us! Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy/pl

Healthcare

Andersen

Backend Developer (.NET) in the EU

Mid

Remote

Bucharest, Romania

🏢 Summary: Backend Developer (.NET) role focused on supporting and enhancing a mobile application built with .NET MAUI and integrated with an Azure backend. The position involves extending functionality, improving performance and reliability, and implementing features such as photo capture, history management, and context-based behavior. The project centers on continuous development and maintenance of a health-related mobile solution. 🗂️ Requirements: 3+ years of backend development experience, Strong hands-on experience with .NET MAUI, Solid knowledge of CSharp and DotNet (NET6/NET7/NET8), Experience integrating mobile applications with RESTful APIs, Understanding of mobile architecture patterns (MVVM, modular apps), Experience with Azure backends (App Services, Functions, APIs), Experience with data handling, storage, and synchronization, English level Intermediate+ or higher 📃 Skills: CSharp, DotNet, NET6, NET7, NET8, MAUI, Azure, REST, MVVM, AppServices, Functions, APIs, Data, Synchronization 🏢 Description: Andersen is hiring a Backend Developer (.NET) in the EU for a project supporting and enhancing a mobile app with Azure backend, improving functionality, performance, and reliability. The customer is a global company specializing in the development of consumer diagnostic solutions with a focus on personal health and well-being. It combines scientific research, engineering, and user-centered design to create accurate and easy-to-use products for home use. The company operates internationally and continuously invests in innovation and quality to help individuals make informed health decisions. The project is focused on supporting and enhancing an existing mobile application built with .NET MAUI and integrated with a Microsoft Azure backend. It includes further development, maintenance, and improvement of application functionality and performance. Responsibilities: Extending existing functionality for pregnancy-related user journeys. Adapting app behavior based on sensitive contexts (e.g., suppressing irrelevant test-related content). Enabling users to capture and store photos of test results (pregnancy/ovulation). Providing history management (archiving, sorting, matching over time). Must-haves: Experience in backend development for 3+ years. Strong hands-on experience with .NET MAUI. Solid knowledge of C# / .NET (preferably .NET 6/7/8). Experience integrating mobile apps with RESTful APIs. Understanding of mobile app architecture (MVVM, modular apps). Experience with Azure-based backends (App Services, Functions, APIs, etc.). Experience with data handling, storage, and synchronization. Level of English – from Intermediate+ and above. Nice-to-haves: Experience with healthcare / regulated domains. Experience working with photo/media handling in mobile apps. Familiarity with privacy-sensitive features and UX logic. Previous experience in modular or scalable mobile systems. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies). Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy Join us! https://people.andersenlab.com/

Technology

Andersen

Full Stack Developer (.NET + Angular)

Senior

Remote

Warsaw, Poland

4,000 - 4,700 USD

🏢 Summary: Full Stack Developer (.NET + Angular) role focused on building a cloud-based risk intelligence platform using Azure services. The position involves developing RESTful APIs, integrating data platforms, and supporting AI/ML-driven pipelines to deliver scalable, high-performance SaaS solutions. Work includes full-stack development, system architecture contribution, and cloud-native implementation. 🗂️ Requirements: 5+ years full-stack development experience, Strong backend development with C# and .NET Core / ASP.NET, Experience building RESTful APIs and services, Frontend development experience with Angular, Experience with Azure cloud services, Integration with Azure Data Lake, Azure SQL, Cosmos DB, Working with JSON and XML data formats, Experience with test frameworks for REST services, Knowledge of OOP, design patterns, SOLID principles, Experience with CI and version control systems, Experience implementing IaC practices 📃 Skills: C#, .NET, ASP.NET, Angular, Azure, REST, JSON, XML, CosmosDB, AzureSQL, DataLake, AzureML, CI, IaC, OOP, SOLID, Git 🏢 Description: Andersen is hiring a Full Stack Developer (.NET + Angular) for a project building a risk intelligence platform, enabling data-driven insights and improved decision-making. The customer is a global organization operating in the professional services domain. It provides a range of advisory and analytical support to organizations across multiple industries, helping them improve business performance and address complex operational challenges. The company leverages data, industry knowledge, and digital tools to deliver practical solutions, supporting decision-making, organizational development, and long-term efficiency. The project is focused on developing a digital platform that supports risk intelligence and resilience decision-making. It leverages data, analytics, and modeling to help organizations assess risk exposure and improve operational performance. Responsibilities: Designing and implementing APIs and backend services for accessing, processing, and exposing analytical and ML-driven data. Building integration layers between data platforms (Azure Data Lake, Azure SQL, Cosmos DB) and applications. Implementing data ingestion, transformation, and orchestration workflows in collaboration with data teams. Working with semi-structured data (JSON) and integrating it into scalable backend services. Supporting AI-driven pipelines and integrating outputs from Azure ML and similar services. Ensuring performance, scalability, and reliability of services in line with SLAs. Integrating backend components within the Azure ecosystem (Functions, Storage, messaging). Contributing to system architecture, especially service boundaries between data and application layers. Writing clean, maintainable, and testable code, including unit tests and automation. Collaborating with architects, data engineers, and frontend teams, and supporting backlog refinement with Product Owners. Conducting code reviews, debugging issues, and improving system performance. Developing PoCs and contributing to SaaS solution design using modern technologies. Implementing high-performance cloud solutions using Azure and IaC practices. Must-haves: Experience in full-stack development for 5+ years. Hands-on experience with backend development using C#, .NET Core / ASP.NET , building RESTful APIs and services. Experience in frontend development using Angular. Familiarity with JSON/XML and service integration patterns. Experience working with cloud technologies, specifically the Azure stack. Experience working with test frameworks/test cases for RESTful services. Experience with software engineering best practices: object-oriented, design patterns, SOLID principles. Experience with software development ecosystem (IDE’s, version control, test automation/CI, etc.). Strong appreciation of building flexible cross-functional full-stack squads with shift-left DevOps, SRE and QA culture. Level of English – from Upper-Intermediate and above. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies). Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy/pl Join us!