Senior .Net Engineer

🏢 Summary: Fullstack .NET Software Engineer role focused primarily on backend development within a large team, contributing to the migration of a legacy checkout system to a scalable AWS-based cloud architecture. The position involves building and maintaining complex e-commerce and billing solutions using modern APIs, BFF patterns, and event-driven approaches. The engineer will design, develop, test, and optimize reliable code while supporting large-scale cloud infrastructure. 🗂️ Requirements: Minimum 5 years of software development experience, Proficiency in C#, Proficiency in .NET Framework or .NET Core, Strong knowledge of TypeScript, Experience with SQL and relational or non-relational databases, Experience with AWS cloud infrastructure, Experience with serverless or event-driven architectures, Understanding of design and architectural patterns, Experience with unit testing frameworks, Experience with Docker and CI/CD pipelines, Proficiency with Git, JIRA, Jenkins, Confident English communication skills 📃 Skills: C#, .NET, .NETCore, TypeScript, SQL, Oracle, AWS, NestJS, Node.js, Postgres, Jest, Next.js, React, REST, JSON, Terraform, Docker, Kubernetes, Jenkins, Git, JIRA, CI/CD 🏢 Description: #5368 Role Description Our team is looking for a skilled .NET Fullstack Software Engineer (primarily backend focused) who is eager to join a large team and develop complex solutions. The ideal candidate will be proficient in C#, .NET Framework, and/or .NET Core, with strong knowledge of TypeScript. Experience with NestJS (Node.js, Postgres, Jest), as well as Next.js or React.js, is a plus. About the Project Cleverbridge is a platform that provides global e-commerce and subscription billing solutions, helping companies build long-term customer relationships and grow revenue streams. With its flexible, cloud-based billing and monetization platform, Cleverbridge integrates seamlessly with client systems, simplifies subscription business models, and delivers an optimized online customer experience. The project team is driving the migration to the new Checkout, moving from legacy checkout capabilities toward a more scalable cloud-based architecture on AWS, with modern APIs, BFF patterns, and ongoing migration of legacy .NET components. Responsibilities Translate business logic into code. Design, build, and maintain performant, efficient, reusable, and reliable code. Review and develop requirements. Adhere to PCI DSS standards (four-eyes principle), participate in QA, and conduct code reviews. Write unit and integration tests. Perform problem-solving, root cause analysis. Communicate with internal product owners and stakeholders. Requirements Minimum 5 years of software development experience. Proficient in C#, .NET Framework, and/or .NET Core. Strong knowledge of TypeScript. Nice to have: experience with NestJS (Node.js, Postgres, Jest), Next.js, or React.js. Bonus: familiarity with JSON Schema specification, Terraform, and REST API design. Extensive proficiency with SQL, non-relational and relational database systems; Oracle knowledge is beneficial. Experience contributing to large-scale cloud infrastructures, preferably on AWS. Experience with serverless/event-driven architectures. Strong understanding of design and architectural patterns. Proficiency with general team tools: JIRA, Git, Jenkins. Solid experience with unit testing frameworks. Experience with Docker and CI/CD pipelines. Experience with Kubernetes is a plus. Nice to have: experience with AI-assisted coding (e.g., GitHub Copilot). Strong communication and problem-solving skills. Confident English for daily communication. Nice to have: knowledge in any of the following domains: e-commerce, payments, finance, or subscription management.

🏢 Summary: Senior Backend Engineer role focused on building and scaling a cloud-based SaaS platform using modern .NET services and REST APIs. The position involves designing distributed systems, improving reliability and observability, and working with cloud and container environments. You will contribute to technical decisions and engineering best practices within a collaborative team. 🗂️ Requirements: 5+ years backend development experience, Experience with SaaS and web applications, Strong knowledge of C#, Strong knowledge of modern .NET/.NET Core, Solid computer science fundamentals, Experience with distributed systems design, Experience with cloud platforms, Experience with containers and orchestration, Understanding of concurrency and performance, Knowledge of authentication and authorization mechanisms 📃 Skills: C#, .NET, .NETCore, REST, Azure, AWS, GCP, Kubernetes, Kafka, RabbitMQ, SQS, Docker, SQL, HTML, CSS, JavaScript 🏢 Description: We’re hiring a Senior Backend Engineer to help build and scale a cloud-based SaaS platform. You’ll work on modern .NET services and APIs, improve reliability and observability, and contribute to technical decisions as part of a collaborative engineering team. Responsibilities: Build and maintain backend services and REST APIs in C# / .NET (.NET Core). Design scalable solutions for distributed systems (async workflows, messaging, integrations). Work with cloud services (Azure/AWS/GCP) and container environments (e.g. Kubernetes). Strengthen system reliability with logging, metrics, tracing, and monitoring. Support secure access patterns: authentication/authorization, API gateway concepts. Contribute through code reviews, good engineering practices, and automation. Requirements: 5+ years of backend development experience, including SaaS and web applications. Strong knowledge of C# and modern .NET + solid CS fundamentals. Familiarity with containers/orchestration and cloud-native approaches. Experience with some of: Kafka/RabbitMQ/SQS, workflow orchestration, job scheduling, search. Good understanding of concurrency and performance. Strong communication skills; Agile/Scrum is a plus. Bonus: basic front-end knowledge (HTML/CSS/JS).

🏢 Summary: Senior Software Engineer role focused on developing and maintaining a complex enterprise .NET platform, combining backend development, production troubleshooting, and performance optimization. The position involves working on identity-related systems and improving architecture, reliability, and code quality within a large-scale environment. The engineer will contribute to technical decisions and future platform evolution. 🗂️ Requirements: 5+ years commercial experience with C# and .NET, Strong knowledge of ASP.NET Core, Experience with asynchronous programming, Experience with dependency injection, Hands-on experience with Entity Framework Core, Strong understanding of SQL Server, Experience with query optimization, Experience with OAuth2, Experience with OpenID Connect, Experience with JWT, Experience supporting and troubleshooting production systems, Fluent English 📃 Skills: C#, .NET, ASP.NET, EntityFramework, SQLServer, OAuth2, OpenIDConnect, JWT, IdentityServer, Duende, ActiveDirectory, AzureAD, MicrosoftGraph, Quartz.NET, SignalR, Playwright, AzureDevOps, CI/CD 🏢 Description: We are looking for an experienced Senior Software Engineer to develop and maintain a complex enterprise .NET platform used by global organizations. This role combines backend development , production troubleshooting , performance optimization , and work on identity-related systems . 💼 Responsibilities: Design, develop, and maintain backend services built with C# and .NET Investigate and resolve complex production issues and customer-reported problems Optimize application performance, database queries, and system reliability Collaborate with Product, Support, and Engineering teams on technical solutions Improve architecture, code quality, and engineering standards Participate in technical discussions and contribute to future platform development ✅ Requirements: 5+ years of commercial experience with C# and .NET Strong knowledge of ASP.NET Core and modern .NET applications Experience with asynchronous programming and dependency injection Hands-on experience with Entity Framework Core Good understanding of SQL Server, query optimization, and database performance Experience with OAuth2, OpenID Connect, JWT Experience supporting and troubleshooting production systems Fluent English communication skills 🌟Nice to have: Experience with IdentityServer / Duende IdentityServer Understanding of Active Directory, Azure AD or Microsoft Graph Hands-on experience with Quartz.NET or similar scheduling frameworks Familiarity with SignalR, Playwright, Azure DevOps and CI/CD pipelines 🎁 We offer: Work on a mature enterprise product used globally Influence technical decisions and platform evolution Private healthcare Life insurance Multisport Opportunity to work with modern .NET technologies and large-scale systems

🏢 Summary: The offer is for a Senior .NET Developer responsible for improving and refactoring core backend systems to enhance structure, maintainability, and security. The role focuses on reducing technical debt, enabling automation and AI integration, and ensuring high code quality through testing and CI/CD practices. The position involves hands-on development within legacy or monolithic environments and driving system modernization. 🗂️ Requirements: 5+ years experience in .NET / C# backend development, Experience with legacy or monolithic systems, Strong knowledge of clean code principles, Proven experience in refactoring existing codebases, Strong SQL and backend integration experience, Experience with APIs and service-based architecture, Experience with CI/CD pipelines, Experience with automated testing, Familiarity with TDD or BDD practices, Experience with Gherkin, SpecFlow, Cucumber or similar, Experience using AI tools in development workflows, Understanding of code structuring for automation and AI integration 📃 Skills: .NET, C#, SQL, APIs, CI/CD, TDD, BDD, Gherkin, SpecFlow, Cucumber, AI, Git, Docker, .NETCore 🏢 Description: Introduction & Summary: We are seeking a Senior .NET Developer with 5-8+ years of experience in backend development and .NET engineering. The successful candidate will drive improvement in code quality, reduce technical debt, and support system structuring for better predictability. With a focus on future automation and AI capabilities, you will help ensure code understandability, maintainability, and security. Main Responsibilities: Responsible for hands-on development and refactoring of core systems, with the aim of enhancing their structure and predictability. Develop and improve .NET-based systems. Reduce technical debt and increase maintainability. Support safe and efficient delivery. Ensure code is understandable, maintainable, and secure. Make systems testable and observable. Facilitate automation of workflows. Key Requirements: Strong experience with .NET / C#. Experience working with legacy or monolithic systems. Strong understanding of clean code principles. Experience with refactoring and improving existing codebases. Strong SQL and backend integration experience. Experience with APIs and service-based architecture. Experience with CI/CD pipelines. Experience with automated testing. Familiarity with TDD / BDD and security by design thinking. Experience with Gherkin / SpecFlow / Cucumber or similar. AI-related: Experience using AI tools in development workflows. Understanding of code structuring for automation and AI integration. Experience using AI for debugging, testing, or documentation support. Nice to Have: Experience with .NET Core. Experience with containerization. Exposure to AI-assisted testing or development tools. Experience improving system observability.

🏢 Summary: The offer is for an Automation QA Engineer to build and maintain UI and API automated tests for a cloud-based e-commerce and subscription billing platform. The role focuses on JavaScript-based test automation within a microservices architecture and close collaboration in an Agile environment. It combines automated and manual testing with strong ownership of test coverage and quality processes. 🗂️ Requirements: 3+ years commercial experience in test automation, 3+ years UI and API test automation with JavaScript and Playwright, Knowledge of test automation concepts and frameworks for modern UI technologies, Experience testing microservices-based applications on AWS, Experience with React and Angular applications, Experience with Git version control, Ability to analyze and work with engineering requirements, Upper-intermediate English level 📃 Skills: JavaScript, Playwright, Git, GitLab, GraphQL, REST, Nunit, Jenkins, AWS, React, Angular, Xray, Databases, Microservices 🏢 Description: About the project Cleverbridge is a platform that provides global e-commerce and subscription billing solutions that help companies build long-term customer relationships and grow revenue streams. With its flexible, cloud-based billing and monetization platform, cleverbridge integrates seamlessly with client systems, simplifies subscription business models, and delivers an optimized online customer experience. Requirements : 3+ years of commercial experience and test automation in particular. 3+ years of UI and API test automation using JavaScript Playwright. Ability to read and work with requirements written in a specific engineering way. Good knowledge of Test Automation concepts, frameworks and approaches applied to modern UI technologies: React, Angular, etc. Experience in testing of complex software applications built on microservice architecture(AWS). Willingness and being able to drive one topic with other AQAs Experience in using source control systems (Git). Self-organized, sense of ownership. Upper-intermediate English level (No slow talking). Tech stack : JavaScript, Playwright, Git,  GitLab, GraphQL, REST API, Nunit, Jenkins Would be a plus: Experience in Test Design, Test Case creation, and maintenance (Xray or similar TMS). Experience with rational and non-rational databases. Developer friendly Security Mindset Flexible minded Job Responsibilities: Creation and maintenance of automated tests. Perform manual functional testing of the application Design/maintain and execute test cases/checklists in XRay Work in a dynamic Agile/Scrum-based environment. Actively collaborating with developers and business stakeholders to clarify requirements, especially in terms of testability, consistency, and completeness Provide impact analysis to measure and control test coverage across all applicable coverage dimensions Participate proactively in backlog refinement, sprint planning, team retrospectives, and other Scrum ceremonies Communicate with stakeholders to provide test reports We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers

🏢 Summary: Back-End Engineer role focused on building and maintaining cloud-native compliance and monitoring systems for financial environments. The position involves developing scalable, distributed backend services in C#/.NET Core running on AWS and Kubernetes. You will contribute to a modern, evolving tech stack with strong emphasis on solid backend engineering fundamentals. 🗂️ Requirements: Strong experience with C# and .NET Core, Hands-on experience with AWS, Hands-on experience with Kubernetes, Understanding of distributed systems, Experience building backend services, Experience with cloud-native architectures 📃 Skills: C#, .NET, AWS, Kubernetes, Lambda, S3, Kafka, Redis, Airflow, gRPC, Snowflake, SQLServer, OpenTelemetry 🏢 Description: Back-End Engineer (.NET | AWS | Kubernetes) We’re looking for a Back-End Engineer (regular or senior level) to join a team building cloud-native compliance/monitoring systems used in financial environments. You’ll work on backend services in C#/.NET Core , contributing to scalable, distributed platforms running on AWS and Kubernetes . The tech stack is modern and evolving — the more exposure to new technologies, the better, though solid backend fundamentals matter most. We’re looking for: Strong backend experience with C#/.NET Hands-on AWS and Kubernetes (preferred) Understanding of distributed systems Experience with compliance or monitoring systems is a big plus Openness to working with modern, cloud-native technologies Tech environment includes: .NET Core / C#, AWS (Lambda, S3), Kubernetes, Kafka, Redis, Airflow, gRPC, Snowflake, SQL Server, OpenTelemetry. Why join: Work on mission-critical systems supporting compliance and market integrity High engineering standards, ownership, and stability Flexible, pragmatic technical leadership

🏢 Summary: Backend Software Engineer role focused on building, testing, and maintaining C#/.NET-based backend systems and microservices. The position involves designing system architecture, developing REST/GraphQL APIs, and ensuring reliable CI/CD-driven deployments. You will work on scalable systems used across multiple European markets. 🗂️ Requirements: 5+ years of commercial experience in C# development, Strong experience with .NET Core and .NET Framework, Solid knowledge of data structures and algorithms, Strong understanding of software engineering principles and testing, Experience with PostgreSQL, MSSQL, or DynamoDB, Experience designing and implementing REST or GraphQL APIs, Hands-on experience with CI/CD processes, Knowledge of OOP, SOLID principles, and Clean Code, Experience designing software architecture for distributed systems 📃 Skills: C#, .NETCore, .NETFramework, TypeScript, REST, GraphQL, PostgreSQL, MSSQL, DynamoDB, CICD 🏢 Description: About the role You will need to be proficient in C# backend development with a thorough understanding of the .NET technologies involved. Strong backend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: C#, .NET Core, .NET Framework, TypeScript, JavaScript, Python, Node.js, REST/GraphQL APIs, React, AWS, Terraform Responsibilities Designing, writing, testing functionalities for a backend system written in C# Design software architecture between backend, frontend and mobile apps Deploying and maintaining microservices in AWS using Terraform Debugging and maintaining system on production used by consumers from several European countries Scoping and assessing the complexity of features Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Recruiting and mentoring new team members Required qualifications 5+ years of production software development experience in C# engineer role Solid hands-on experience in .NET Core and .NET Framework technologies Experience in working with AWS and Terraform / CloudFormation Strong knowledge of DBMS like MS SQL / PostgreSQL / DynamoDB Expertise of REST APIs Strong hands-on experience of CI&CD processes Proficiency in OO design patterns, SOLID principles, Clean Code and solving architectural problems Computer Science degree AI Tooling usage Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have Experience in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc. Exposure to frontend development in React Working experience with one of the object-oriented and/or functional languages such as Java, TypeScript, Elixir, C++, Golang, Erlang, Python, Kotlin

🏢 Summary: The offer is for a Senior .NET Developer with 5+ years of experience to design, develop, and maintain scalable backend applications using modern .NET technologies. The role focuses on building high-quality APIs, contributing to architectural decisions, and ensuring application reliability in cloud-based environments. It involves close collaboration with cross-functional teams and strong engagement in testing, CI/CD, and production support. 🗂️ Requirements: Minimum 5 years of experience with .NET development, Strong experience with C# and .NET Core, Solid understanding of REST APIs, Experience with Entity Framework Core, Strong knowledge of SQL, Experience with cloud platforms (Azure or AWS), Experience with CI/CD pipelines, Experience with Git version control, Experience with unit and integration testing, Experience with message broker systems, Familiarity with agile development practices 📃 Skills: C#, .NET, .NETCore, REST, EntityFramework, SQL, Azure, AWS, CI/CD, Git, UnitTesting, IntegrationTesting, MessageBroker, Angular, Docker, Kubernetes, Microservices 🏢 Description: Summary: We’re looking for a highly skilled .NET Developer with a minimum of 5 years of experience. This role focuses on solving complex problems, building high-quality software, and contributing to a collaborative engineering culture. The candidate should be passionate about clean architecture, modern .NET development, and delivering impactful solutions. Responsibilities: Analyze, design, develop, and maintain applications using .NET / .NET Core. Build scalable backend services (APIs). Collaborate with cross-functional teams (Business, Dev, Infra, etc.). Participate in code reviews to elevate engineering standards. Contribute to architectural decisions and technical roadmaps. Provide business support and monitor applications (level 2 support, incident resolution, and troubleshooting). Key Requirements: Strong experience with C# and .NET Core. Solid understanding of REST APIs, Entity Framework Core, and SQL. Familiarity with cloud platforms (Azure or AWS). Experience with CI/CD pipelines and version control (Git). Strong testing culture: unit tests, integration tests, and production validation. Familiarity with agile development practices. A mindset focused on quality, performance, and maintainability. Experience with a message broker. Nice to Have: Knowledge of microservices architecture. Experience with front-end frameworks (Angular). Background in distributed systems or high-availability environments. Knowledge of Docker & Kubernetes. Experience with Azure functions. Other Details: This position allows for flexibility and may accommodate remote work arrangements. Candidates should be prepared for collaborative team engagements with a focus on delivering high-quality software solutions.

🏢 Summary: Dev Lead / Senior Backend Engineer role focused on building and leading scalable backend systems using .NET and Microsoft Azure in a complex retail environment. The position combines hands-on development with technical leadership, emphasizing event-driven and microservices architectures. The role drives system design, integration, and engineering quality across a distributed cloud-based landscape. 🗂️ Requirements: Strong backend development experience with C# and .NET, Experience with .NET 8 or modern .NET versions, Experience developing and operating applications on Microsoft Azure, Practical experience designing and building event-driven systems, Experience with microservices architectures, Experience with Azure messaging patterns (queues, topics, event-based integrations), Experience with CI/CD pipelines using Azure DevOps and YAML 📃 Skills: CSharp, DotNet, DotNet8, Azure, Microservices, EventDriven, Messaging, AzureDevOps, YAML, CICD, Queues, Topics 🏢 Description: \We are seeking a Dev Lead / Senior Backend Engineer specialized in .NET and Azure to join a premium fashion retailer's internal tech team. This role is vital for ensuring the scalability, maintainability, and coherence of a broad system landscape. The ideal candidate will possess strong backend development skills, particularly in C# and modern .NET versions, and have practical experience in setting up event-driven architectures and developing applications on Microsoft Azure. The Dev Lead will contribute both as a hands-on developer and as a technical leader, mentoring team members and driving engineering quality. Main Responsibilities The Consultant will work as a hands-on engineer while also supporting the technical direction of the team. Developing backend services and integrations Reviewing pull requests and contributing to code quality Supporting architectural discussions with the Head of Tech and the team Ensuring the overall development landscape remains coherent and scalable Contributing to system design decisions and actively engaging in technical discussions Supporting developers with architectural and technical queries Participating in technical discovery and solution design for new initiatives Driving improvements in development practices Exploring AI-assisted development tools for practical usage Interfacing with third-party SaaS vendors for integration efforts Key Requirements Strong backend development experience with C# / .NET Experience with .NET 8 or modern .NET versions Experience developing and operating applications on Microsoft Azure Practical experience designing and building event-driven systems Experience with microservices architectures Experience with Azure messaging patterns (queues, topics, event-based integrations) Experience with CI/CD pipelines (Azure DevOps, YAML pipelines) Comfortable working remotely in a setup primarily on site Nice to Have Experience with Cosmos DB Experience working with integration platforms Experience building integration-heavy systems Strong understanding of scalable distributed systems Ability to communicate system architecture clearly to stakeholders Experience with e-commerce systems Experience in retail environments

🏢 Summary: Senior C# / .NET Engineer role focused on maintaining and evolving a large, business-critical enterprise/SaaS system with complex domain logic. The position involves working with legacy codebases, solving complex technical issues, and contributing to architectural decisions for scalable, high-load systems. The engineer will also support frontend integration using Angular technologies when needed. 🗂️ Requirements: Strong commercial experience with C#, .NET development experience, Knowledge of Angular or AngularJS, Knowledge of TypeScript, Experience with large enterprise or SaaS systems, Experience working with legacy codebases, Experience solving complex technical problems, Strong debugging skills, Experience with scalable and high-load architectures, Ability to work with large and unfamiliar codebases 📃 Skills: C#, .NET, Angular, AngularJS, TypeScript, SQL, REST, OOP 🏢 Description: We are looking for a strong C# / .NET engineer to join a project focused on large enterprise and SaaS systems. This role is suited for an experienced engineer who is comfortable working with complex business logic, large codebases, and mature systems, and who takes ownership of technical decisions rather than just implementing tasks. About the Project: The project is a long-running, business-critical system with a complex domain and significant technical depth. You will work on maintaining and evolving an existing platform, including improving scalability, performance, and reliability. A substantial part of the work involves understanding legacy code, debugging complex issues, and contributing to the system as a key technical member of the team. Responsibilities: Design, develop, and maintain backend solutions using C# / .NET; Work with complex business logic in large enterprise or SaaS environments; Analyze, understand, and improve existing and legacy codebases; Solve complex technical and production issues; Collaborate closely with other engineers and stakeholders; Contribute to architectural decisions for scalable and high-load systems; Support frontend integration using Angular / AngularJS and TypeScript where needed. Qualifications: Strong commercial experience with C# / .NET; Knowledge of Angular or AngularJS and TypeScript; Experience working on large enterprise systems and/or SaaS platforms; Experience playing a key role in projects (e.g. key developer, leading engineer, technical owner); Strong experience solving complex technical problems; Experience working with legacy code; Very good debugging skills; Ability to work effectively with large and unfamiliar codebases; Experience with scalable architectures and high-load systems; An engineering mindset with the ability to deeply understand systems and make mature technical decisions. Recruitment Process: Initial interview with our recruitment team; Technical interview with the client; Final decision and offer. Inuits Sp. z o.o. is registered in the National Register of Employment Agencies (KRAZ) under number 35420.