Senior Backend Engineer (.NET)

🏢 Summary: Senior Backend Engineer role developing and maintaining C#/.NET desktop applications for manufacturing and testing environments. The position focuses on WPF/MVVM GUI development, hardware and instrument integration, automated testing, Python script integration, and stable parallel execution. 🗂️ Requirements: 5+ years of C#/.NET experience, WPF or similar GUI framework experience, MVVM experience, Async programming, multithreading, and thread-safety knowledge, Clean architecture and testable code design knowledge, MongoDB or similar database experience 📃 Skills: C#, .NET, WPF, MVVM, MongoDB, Python 🏢 Description: We are looking for a Senior Backend Enginee r to join a team developing advanced desktop applications for manufacturing and testing environments. This role is a good fit for someone who has strong experience with C#/.NET, enjoys solving complex technical problems. ✅ Your responsibilities: Develop and maintain C# / .NET desktop applications for manufacturing and testing systems Build GUI features using WPF / MVVM Work with hardware integration, instrument control and automated test execution Integrate Python-based test scripts into .NET applications Support parallel execution, thread safety and application stability Troubleshoot issues using logs, traces and system data 🧠 Our requirements: 5+ years of experience with C# / .NET Experience with WPF or similar GUI frameworks and MVVM Good understanding of async programming, multithreading and thread safety Understanding of clean architecture and testable code design Experience with MongoDB or similar databases 🌟 What we offer: Private healthcare Real influence on technical decisions Opportunity to work on a modern AI / ML product platform

🏢 Summary: Senior Backend Engineer role building and operating scalable core services and developer-facing tools for a voice platform. The position spans backend and frontend development, with end-to-end ownership of distributed, cloud-native production systems and collaboration with ML teams. 🗂️ Requirements: 6+ years building and operating distributed backend services, Professional Java experience, Experience designing gRPC/HTTP APIs, Experience with distributed systems and event-driven architectures, Experience operating cloud-native infrastructure in production, End-to-end production system ownership, Ability to collaborate with ML and cross-functional teams, Clear communication of technical trade-offs 📃 Skills: Java, Python, gRPC, HTTP, APIs, Cloud-native, Distributed, Event-driven 🏢 Description: We are looking for a Senior backend Engineer to help build the core services and user-facing tools that power a voice platform. In this role, you will develop and operate the platform's foundational backend systems while also building intuitive frontend experiences. You will work across the full stack, designing scalable backend services and creating high-quality frontend applications that enable internal teams and partners to build, test, and manage voice experiences. This is an opportunity to work on distributed systems at scale, shape developer-facing tools, and own features from concept through production. What You'll Do Design, build, and operate scalable backend services. Develop and maintain distributed systems using gRPC/HTTP APIs and event-driven architectures. Build cloud-native services with a strong focus on reliability, scalability, and performance. Own production systems end-to-end, including architecture, implementation, deployment, monitoring, and iteration. Partner closely with ML engineers to design robust interfaces between backend services and model-serving infrastructure. Collaborate with engineers and cross-functional stakeholders to deliver high-quality technical solutions. Champion engineering best practices, operational excellence, and maintainable system design. Who You Are You have 6+ years of experience building and operating distributed backend services. You have strong professional experience with Java and Python. Experience with Java is essential, while Python is a plus because much of the team's tooling is built in it. You have experience designing and developing gRPC/HTTP APIs, distributed systems, and event-driven architectures. You have experience building and operating cloud-native infrastructure in production environments. You take ownership of systems throughout their full lifecycle, from design through production support. You collaborate effectively with machine learning teams and cross-functional partners. You are an excellent communicator who can clearly explain technical trade-offs to both technical and non-technical stakeholders.

🏢 Summary: Senior Software Engineer role on a global product team building enterprise platforms for research, clinical development, and scientific decision-making. The position focuses on scalable backend services, modern web applications, cloud-native architecture, CI/CD, testing, reliability, and collaboration in an agile environment. 🗂️ Requirements: 5+ years of software development experience, ASP.NET Core and Vue 3 with TypeScript, Python or .NET backend experience, REST API development, Azure or AWS cloud experience, GitHub Actions CI/CD experience, Automated testing and DevOps practices, English fluency 📃 Skills: ASP.NET, Core, .NET, Vue, TypeScript, Python, REST, Azure, AWS, GitHub, Actions, Vitest, Allure, MSAL 🏢 Description: Job Title: Senior Software Engineer Position can be worked Remote About the role Are you an experienced Software Developer looking to build digital products that deliver real business value? Join a global product team developing enterprise-grade platforms that support research, clinical development, and scientific decision-making. You will work closely with Product Owners, architects, business stakeholders, and fellow engineers to design, build, and evolve modern software solutions used by thousands of users worldwide. What you will be doing Design and implement scalable solutions with backend services and APIs Develop modern web applications and user-facing functionality Contribute to system architecture and technical decision-making Participate in cloud-native solution design and implementation Build and improve CI/CD pipelines and automated deployment processes Ensure high quality through automated testing and code reviews Collaborate with cross-functional teams in an agile setup Support platform reliability, observability, and operational excellence What we are looking for 5+ years of software development experience: Frameworks: ASP.NET Core (.NET 10), Vue 3 (Composition API) + TypeScript UI library: internal design system Auth: Azure MSAL Browser (Microsoft identity) Testing: Vitest + Vue Test Utils, Allure reporting Hands-on experience with at least one backend technology stack such as: Python, .NET Experience developing REST APIs Experience with cloud platforms such as Azure or AWS Experience with CI/CD (GitHub Actions), automated testing, and DevOps practices Strong communication and stakeholder management skills Experience from regulated environments is considered an advantage Fluency in English, both written and spoken, is expected.

🏢 Summary: Senior Software Engineer role building enterprise digital platforms for the pharmaceutical and life sciences sector. The position covers full-stack, cloud-native development, architecture influence, API design, CI/CD, quality automation, and platform reliability in an international agile team. 🗂️ Requirements: 5+ years of professional software development experience, Strong .NET/ASP.NET Core and/or Python experience, REST API development experience, Vue 3 and TypeScript experience, Azure or AWS cloud platform experience, CI/CD, automated testing, and DevOps knowledge, Software architecture and scalable solution design knowledge, Fluent written and spoken English 📃 Skills: .NET, ASP.NET, Python, Vue, TypeScript, REST, Azure, AWS, GitHub, Vitest, Allure, MSAL, CI/CD, DevOps 🏢 Description: We’re looking for an experienced Senior Software Engineer to join a global product team within the pharmaceutical and life sciences industry . This is a chance to work on modern, enterprise-grade digital platforms where software engineering meets science and real-world business impact . You’ll have the opportunity to influence architecture, contribute to technical decisions, and build solutions that matter — all while working in a truly international, agile environment. What you’ll work on As a Senior Software Engineer, you’ll be involved across the full software development lifecycle — from designing scalable solutions and APIs to delivering modern user-facing functionality. Your responsibilities will include: Designing and implementing scalable backend services and REST APIs Developing modern web applications and intuitive user-facing functionality Contributing to system architecture and technical decision-making Designing and implementing cloud-native solutions Building and improving CI/CD pipelines and automated deployments Ensuring software quality through automated testing and code reviews Working closely with Product Owners, architects, engineers and business stakeholders Supporting platform reliability, observability and operational excellence Contributing to an agile, collaborative engineering culture Your technology playground You’ll work with a modern technology stack including: ASP.NET Core / .NET 10 Vue 3 – Composition API TypeScript REST APIs Python and/or .NET Azure / AWS GitHub Actions & CI/CD Vitest & Vue Test Utils Allure reporting Microsoft Identity / Azure MSAL Browser What we’re looking for We’re looking for someone who brings 5+ years of professional software development experience and is comfortable taking ownership of technical solutions. You’ll ideally have: Strong experience with .NET / ASP.NET Core and/or Python Hands-on experience building REST APIs Solid frontend experience with Vue 3 and TypeScript Experience with cloud platforms , preferably Azure or AWS Practical knowledge of CI/CD, automated testing and DevOps practices A strong understanding of software architecture and scalable solution design Excellent communication and stakeholder management skills Experience working in regulated environments is a strong advantage Fluent English , both written and spoken Why this opportunity? Work globally, remotely – collaborate with colleagues and stakeholders across an international product organisation. Build technology with purpose – your work will contribute to digital platforms supporting research, clinical development and scientific decision-making. Have a technical voice – this isn’t just about writing code. You’ll influence architecture, engineering practices and technical direction. Modern engineering environment – cloud-native development, modern frontend technologies, automation, CI/CD and a strong focus on quality. Cross-functional collaboration – work alongside experienced engineers, architects, Product Owners and business experts in an agile setup. Ready to build software where technology meets science? Apply now and let’s talk.

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

🏢 Summary: Senior Software Engineer role focused on designing, building, and scaling secure enterprise web applications and high-performance SaaS platforms. The position covers backend APIs, microservices, testing, technical leadership, and Azure-based CI/CD delivery within Agile teams. 🗂️ Requirements: 6+ years of full-lifecycle software development experience, Experience developing and maintaining large-scale web applications and SaaS solutions, Strong proficiency in C#, .NET Core, and .NET Framework, Hands-on experience with Azure Cloud services, RESTful architectures, and CI/CD pipelines, Experience with NUnit, Moq, Jest, and Git, Strong problem-solving and technical communication skills 📃 Skills: C#, .NET, Azure, REST, Microservices, NUnit, Moq, Jest, Git, CI/CD, SaaS 🏢 Description: We are looking for a skilled and passionate Senior Software Engineer to join our core engineering team. In this role, you will play a key part in designing, building, and scaling enterprise-grade web applications and high-performance SaaS solutions. If you have a strong foundation in Microsoft technologies, cloud architecture, and modern engineering practices—and love solving complex technical challenges—we would love to hear from you! Key Responsibilities Architecture & Development: Design, build, and maintain scalable, secure, and resilient web applications and SaaS platforms. API & Backend Systems: Implement and optimize RESTful APIs, microservices, and Web API integrations. Quality & Testing: Drive software quality by writing comprehensive unit tests (NUnit, Moq, Jest) and advocating for test-driven practices. Technical Leadership: Participate in code reviews, architectural discussions, and technical planning to ensure clean, maintainable code. Agile Collaboration: Work closely with cross-functional teams using Agile methodologies to deliver features iteratively and efficiently. DevOps & Version Control: Utilize Git and Azure DevOps for continuous integration, project tracking, and modern deployment pipelines. Key Requirements Experience: 6+ years of hands-on experience in full-lifecycle software development. SaaS & Web Architecture: Proven track record of developing and maintaining large-scale web applications and SaaS solutions. Core Tech Stack: Strong proficiency in C# , .NET Core , and .NET Framework . Cloud & DevOps: Hands-on experience with Azure Cloud services, RESTful architectures, and CI/CD pipeline concepts. Testing & Tools: Solid experience with unit testing frameworks ( NUnit, Moq, Jest ) and version control ( Git ). Communication: Excellent problem-solving skills and the ability to articulate technical concepts clearly to team members. Nice to Have Agile Frameworks: Experience working within a SAFe (Scaled Agile Framework) environment. Mentorship: Passion for coaching junior developers and fostering team growth.

🏢 Summary: 6-miesięczny kontrakt z możliwością przedłużenia dla Senior .NET Developera odpowiedzialnego za projektowanie, rozwój i utrzymanie skalowalnych aplikacji backendowych oraz API. Rola obejmuje współpracę z zespołami projektowymi, projektowanie architektury, optymalizację rozwiązań, utrzymanie systemów produkcyjnych i wsparcie mniej doświadczonych osób. 🗂️ Requirements: Minimum 6 lat komercyjnego doświadczenia w C#/.NET, Bardzo dobra znajomość .NET Core / .NET 6+, Doświadczenie w projektowaniu i rozwoju aplikacji backendowych oraz REST API, Znajomość wzorców projektowych i zasad SOLID, Doświadczenie w pracy z bazami danych SQL, Znajomość Git i praktyk CI/CD, Doświadczenie w Agile, Scrum lub Kanban, Bardzo dobra znajomość języka angielskiego 📃 Skills: C#, .NET, SQL, REST, Git, CI/CD, Agile, Scrum, Kanban, SOLID 🏢 Description: Poszukujemy doświadczonego Senior .NET Developera (C#) do realizacji projektu dla naszego klienta. Jest to kontrakt na 6 miesięcy z możliwością przedłużenia współpracy. Zakres obowiązków Projektowanie, rozwój i utrzymanie aplikacji backendowych w technologii C#/.NET. Tworzenie oraz rozwijanie wydajnych i skalowalnych usług oraz API. Współpraca z zespołem projektowym przy analizie wymagań biznesowych i technicznych. Dbanie o wysoką jakość kodu poprzez stosowanie dobrych praktyk programistycznych oraz udział w code review. Identyfikowanie i rozwiązywanie problemów technicznych oraz optymalizacja istniejących rozwiązań. Tworzenie i aktualizacja dokumentacji technicznej. Udział w projektowaniu architektury aplikacji oraz proponowanie usprawnień technologicznych. Współpraca z zespołami QA, DevOps oraz analitykami w celu sprawnej realizacji projektu. Wsparcie mniej doświadczonych członków zespołu oraz dzielenie się wiedzą. Aktywny udział w procesie wdrażania nowych funkcjonalności i utrzymania systemów produkcyjnych. Wymagania: Minimum 6 lat doświadczenia komercyjnego w programowaniu w C#/.NET . Bardzo dobra znajomość platformy .NET (.NET Core / .NET 6+). Doświadczenie w projektowaniu i rozwoju aplikacji backendowych oraz REST API. Znajomość wzorców projektowych i zasad SOLID. Doświadczenie w pracy z bazami danych SQL. Znajomość Git oraz praktyk CI/CD. Umiejętność pracy w metodykach Agile (Scrum/Kanban). Bardzo dobra znajomość języka angielskiego umożliwiająca pracę w międzynarodowym środowisku.