C#/.Net Developer

🏢 Summary: The role focuses on developing and maintaining C#/.NET components for mission-critical, real-time voice, video, and data communication systems. It involves hands-on work with SIP signalling, network programming, and secure low-latency services within a long-term product environment. The position requires close collaboration in distributed Agile teams while contributing primarily through hands-on development. 🗂️ Requirements: 3+ years experience with C# and .NET (Framework and .NET Core), Strong asynchronous programming skills, Strong network programming skills, Experience with ASP.NET, WebAPI, SignalR, or WCF, Experience with SIP signalling and session handling, Experience with real-time voice or video systems, Background in telecom or real-time communication environments, Experience with XML and XSD, Knowledge of OOP and SOLID principles, Experience with Git and CI/CD, Experience working in Agile environments, Basic SQL knowledge 📃 Skills: C#, .NET, ASP.NET, WebAPI, SignalR, WCF, SIP, RTP, RTCP, XML, XSD, SQL, Git, CI/CD, Agile 🏢 Description: Responsibilities Design, develop, and maintain C#/.NET components for real-time voice, video, and data communication systems Implement new features within existing mission-critical communication services Work hands-on with SIP signalling , session management , and network communication layers Build secure, low-latency, highly reliable services for real-time environments Contribute to systems handling real-time voice and video streams Collaborate with distributed Agile teams across the UK and Europe 60–70% hands-on development within a long-term product environment Requirements 3+ years of experience with C# / .NET (Framework & .NET Core) Strong skills in asynchronous and network programming Hands-on experience with ASP.NET , WebAPI, SignalR, or WCF Experience with SIP signalling and session handling Exposure to real-time voice or video systems (RTP/RTCP is a plus) Background in telecom or real-time communication environments Experience working with XML (XSD) and structured data Solid engineering fundamentals ( OOP, SOLID, Git, CI/CD, Agile ) Basic SQL knowledge

🏢 Summary: The role involves designing, developing, and maintaining .NET applications and services with a strong focus on code quality and system reliability. The position includes writing automated tests, participating in architectural discussions, and collaborating with QA and DevOps teams. It is suited for an experienced .NET Developer comfortable working with production systems and modern development practices. 🗂️ Requirements: Commercial experience as .NET Developer, Strong knowledge of C#, Strong knowledge of .NET Framework or .NET 6+, Experience with SQL databases, Understanding of software architecture, Knowledge of data modeling, Experience maintaining production systems, English proficiency B2 or higher 📃 Skills: C#, .NET, SQL, REST, Selenium, Gherkin, Jenkins, HTTPS, LDAP, SSH, SFTP, TLS, Architecture, DataModeling, UnitTesting, IntegrationTesting 🏢 Description: Responsibilities: Designing, developing, and maintaining .NET applications and services Write and maintain automated unit and integration tests Participate in code reviews and architectural discussions Collaborate with QA, DevOps, and product teams Requirements: Commercial experience as a .NET Developer Strong knowledge of C#, .NET Framework and/or .NET 6+ Experience working with SQL databases Understanding of software architecture designs and data modeling Experience maintaining production systems Communicative English (B2) Nice to have: Experience creating technical documentation Experience with REST API, Selenium, Gherkin, Jenkins, HTTPS, LDAP, SSH, SFTP, TLS What we offer: Flexible forms of employment and working hours (CoE or B2B) An interesting, challenging job in the dynamically developing Capital Group company; Work on innovative projects using modern technologies; Direct impact on shaping the image of the Capital Group's companies on the market; Possibility to develop competences in a wide range; Attractive salary; Stability of employment and a friendly work atmosphere; Cool benefits, among others integration meetings, internal company competitions, fruit Tuesdays, sweet Thursdays and much more;

🏢 Summary: The offer is for a senior developer responsible for developing and maintaining complex banking systems using .NET and related technologies. The role involves backend development, system integrations, database optimization, and working within microservices architecture in an Agile environment. The position requires strong experience with enterprise-level systems and CI/CD practices. 🗂️ Requirements: Minimum 5 years of experience in banking sector, Very good knowledge of .NET Core and .NET Framework, Experience with Transact-SQL and relational databases, Knowledge of MS SQL, Experience with Visual Studio 2022, Experience with SQL Server Management Studio, Knowledge of WebAPI, WCF, Web Services, Experience in object-oriented programming, Experience with Git, Practical experience with microservices architecture, Good knowledge of Spring Boot, Good knowledge of Spring Data JPA, Good knowledge of React (Next.js), Experience with GitLab CI and CI/CD, Experience working in Agile/Scrum, English for technical documentation and communication 📃 Skills: .NET, NETCore, NETFramework, SQL, TSQL, MSSQL, WebAPI, WCF, WebServices, Git, SpringBoot, SpringDataJPA, React, Next.js, Microservices, GitLabCI, CICD, VisualStudio, SSMS 🏢 Description: Twój zakres obowiązków Rozwój i utrzymanie aplikacji w technologii .NET Tworzenie i optymalizacja zapytań SQL oraz praca z bazą danych MS SQL Integracja systemów z wykorzystaniem WebAPI, WCF oraz Web Services Analiza działania oraz rozwój złożonych systemów informatycznych Współpraca z zespołem projektowym w metodykach zwinnych Praca z systemem kontroli wersji Git Tworzenie i utrzymanie dokumentacji technicznej Nasze wymagania Minimum 5 lat doświadczenia zawodowego w branży bankowej Bardzo dobra znajomość .NET Core oraz .NET Framework Doświadczenie w pracy z Transact-SQL oraz relacyjnymi bazami danych Znajomość MS SQL Doświadczenie w pracy z Visual Studio 2022 oraz SQL Server Management Studio Znajomość technologii integracyjnych takich jak WebAPI, WCF, Web Services Doświadczenie w programowaniu obiektowym Znajomość systemu kontroli wersji Git Umiejętność analizy i zrozumienia złożonych systemów IT Znajomość języka angielskiego umożliwiająca pracę z dokumentacją techniczną Doświadczenie w pracy w metodykach Agile Spring Boot – dobra znajomość Spring Data JPA – dobra znajomość React (Next.js) – dobra znajomość Architektura mikroserwisów – znajomość praktyczna (nie tylko teoretyczna) (szukamy osoby z doświadczeniem w microserwisach) GitLab CI – doświadczenie w CICD Doświadczenie w pracy w zespole Agile/Scrum Angielski na poziomie umożliwiającym komunikację i pracę z dokumentacją Mile widziane Doświadczenie w pracy w sektorze finansowym

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

🏢 Summary: The offer is for a .NET Developer responsible for developing and maintaining .NET Core applications and REST APIs in a cloud-based environment. The role involves managing CI/CD pipelines, ensuring high software quality through testing, and working within Agile teams. It is suitable for candidates with 2–3 years of experience seeking remote or hybrid work. 🗂️ Requirements: 2–3 years of experience in C# and .NET Core development, Experience in developing and maintaining REST APIs, Proficiency with Entity Framework Core, Experience with Azure and basic AWS services, Experience with Azure DevOps and CI/CD pipelines, Knowledge of Git and automated build processes, Hands-on experience with Agile and Scrum methodologies, Experience with unit and integration testing 📃 Skills: C#, .NET, Azure, AWS, REST, EntityFrameworkCore, AzureDevOps, Git, CICD, Agile, Scrum, UnitTesting, IntegrationTesting 🏢 Description: Motivated .NET developer with 2–3 years of experience in developing and maintaining C# / .NET Core applications. Experienced with cloud platforms (Azure and AWS), CI/CD pipelines (Azure DevOps), and backend services, with a strong understanding of REST APIs and Agile practices. Solid testing culture with unit, integration, and production validation to ensure high-quality and reliable software. Main Responsibilities: Developing and maintaining .NET Core applications Designing and implementing REST APIs Managing CI/CD pipelines using Azure DevOps Collaborating within Agile teams Ensuring software quality through comprehensive testing practices Participating in code reviews and pair programming Key Requirements: C# / .NET Core development experience Proficiency with REST APIs and Entity Framework Core Experience in Azure and basic AWS services Familiarity with Azure DevOps, Git, and automated build processes Hands-on experience in Agile and Scrum methodologies Knowledge of testing practices: unit testing and integration testing Nice to Have: Knowledge of microservices architecture Basic front-end knowledge: Angular / React Experience with Docker and Kubernetes Understanding of distributed systems and high-availability environments Other Details: Immediate availability is preferred, but negotiation is possible. This role is suitable for remote or hybrid working arrangements.

🏢 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 .NET Developer to build and maintain web applications and APIs using C#/.NET and Azure services, starting in March 2026. The role involves developing backend solutions, writing automated tests, and collaborating with QA and DevOps in an agile environment. The project focuses on modern technologies and production system maintenance. 🗂️ Requirements: Availability from March 2026, Commercial experience as .NET Developer, Strong knowledge of C# and .NET, Experience with ASP.NET (.NET Core or newer), Experience with SQL databases, Experience with ORM frameworks, Experience with Azure services, Experience with Angular, Knowledge of software architecture and data modeling, Experience maintaining production systems, English level B2 or higher 📃 Skills: C#, .NET, ASP.NET, .NETCore, SQL, ORM, Azure, Angular, CI/CD, Docker, Kubernetes, Podman 🏢 Description: Please note: the project starts at the beginning of March 2026. We are therefore looking for candidates available from that date. Responsibilities: Development and maintainance of web applications ( ASP.NET , APIs, Azure Services) using C#/.NET Write and maintain automated unit and integration tests Participate in code reviews and architectural discussions Collaborate with QA, DevOps, and product teams Requirements: Commercial experience as a .NET Developer Strong knowledge of C#, .NET, ASP.NET (.NET Core or newer) Experience working with SQL databases and ORM frameworks Experience with Azure services Experience with Angular Understanding of software architecture designs and data modeling Experience maintaining production systems Communicative English (B2 level or higher) Nice to have: Experience with CI/CD pipelines Experience working with containerized environments (Docker, Podman, Kubernetes) What can we offer: Flexible forms of employment and working hours (CoE or B2B) An interesting, challenging job in the dynamically developing Capital Group company; Work on innovative projects using modern technologies; Direct impact on shaping the image of the Capital Group's companies on the market; Possibility to develop competences in a wide range; Attractive salary; Stability of employment and a friendly work atmosphere; Cool benefits, among others integration meetings, internal company competitions, fruit Tuesdays, sweet Thursdays and much more;

🏢 Summary: The role involves developing and maintaining applications within the .NET ecosystem, integrating them with cloud platforms, and supporting DevOps automation processes. The position focuses on building scalable solutions, managing CI/CD pipelines, and implementing Infrastructure as Code in Azure and GCP environments. The developer will collaborate with cross-functional teams to enhance data integration and deployment workflows. 🗂️ Requirements: Strong experience with C#, Strong experience with .NET framework or .NET ecosystem, Experience with Python, Experience with Azure, Experience with GCP, Knowledge of GitHub, Knowledge of GitHub Actions, Knowledge of Azure DevOps, Experience with CI/CD pipelines, Experience with Terraform, Experience with Infrastructure as Code, Fluency in Polish, Fluency in English 📃 Skills: C#, .NET, Python, Azure, GCP, GitHub, GitHubActions, AzureDevOps, CI/CD, Terraform, SQL, Spotfire, Signals 🏢 Description: Role Overview We are looking for a C#/.NET Developer with experience in cloud environments and DevOps practices to join our team. In this role, you will be responsible for developing and maintaining applications built on the .NET ecosystem, integrating them with cloud services, and supporting automation and deployment processes. You will work closely with cross-functional teams to build scalable solutions, integrate data and analytics tools, and improve development workflows through modern DevOps practices. Key Responsibilities Design, develop, and maintain applications using C# and .NET technologies . Support development and automation tasks using Python where appropriate. Work with cloud platforms (Azure and GCP) to deploy and manage applications and services. Implement and maintain DevOps processes , including CI/CD pipelines using GitHub, GitHub Actions, and Azure DevOps (ADO) . Manage infrastructure and environments using Infrastructure as Code tools such as Terraform . Integrate applications with analytics and visualization tools such as Spotfire . Work with Signals .NET framework–based systems to support data integration and application functionality. Collaborate with engineering, data, and DevOps teams to ensure reliable and scalable solutions. Required Skills Strong experience with C# and .NET framework / .NET ecosystem . Experience with Python for scripting, automation, or data-related tasks. Knowledge of DevOps tools and practices , including GitHub, GitHub Actions, and Azure DevOps (ADO) . Experience working with cloud platforms such as Microsoft Azure and Google Cloud Platform (GCP) . Familiarity with Infrastructure as Code , particularly Terraform . Experience working with SQL or data-driven applications is a plus. Good understanding of CI/CD pipelines and automated deployment processes . Polish and English must have Nice to Have Basic knowledge of Spotfire or other analytics/visualization tools. Experience with Signals platform and .NET-based integrations . Experience working in Agile development environments .

🏢 Summary: Development of backend applications using .NET/.NET Core in a banking environment, including building REST APIs, business logic modules, and system integrations. The role involves working in AWS to deploy serverless and containerized services, managing SQL databases, and ensuring security and regulatory compliance. Close collaboration with business teams is required to deliver high-quality, secure financial solutions. 🗂️ Requirements: Minimum 6 years of experience as .NET Developer, Strong knowledge of .NET and C#, Hands-on experience with AWS services (Lambda, ECS/EKS, S3, RDS), Experience with REST API development, Proficiency in Kafka, Proficiency in SQL and database design, Experience with containerization, Experience in banking or financial projects, Understanding of security and regulatory requirements, Very good English skills 📃 Skills: .NET, C#, AWS, Lambda, ECS, EKS, S3, RDS, Kafka, SQL, REST, Docker, Kubernetes 🏢 Description: Scope of Responsibilities: Design and development of backend applications based on .NET / .NET Core. Creation and maintenance of REST APIs, integrations, and business logic modules. Working in an AWS environment – building and deploying serverless services, containerization, and process automation. Working with SQL databases (data model design, query optimization). Collaboration with analysts and business teams within the banking domain. Ensuring code quality, application security, and compliance with financial sector regulatory requirements. Requirements: Minimum 6 years of experience as a .NET Developer. Strong knowledge of .NET / .NET Core (C#). Hands-on experience with AWS (Lambda, ECS/EKS, S3, RDS, or other services). Proficiency in Kafka and SQL. Experience in banking or financial projects (knowledge of regulatory processes, security, and system integrations is a plus). Very good command of English (daily communication).

🏢 Summary: The offer is for a Full Stack .NET Developer responsible for building scalable backend services and RESTful APIs within domain-driven and event-driven architectures, as well as developing responsive frontend interfaces. The role involves working with microservices or modular monoliths, implementing asynchronous integrations, and ensuring high code quality through testing and CI/CD practices. The position requires close collaboration in an agile environment and contribution to architectural decisions. 🗂️ Requirements: Minimum 3 years of experience in similar role, Very good knowledge of ASP.NET WebAPI (.NET Core), Very good knowledge of React, Very good knowledge of TypeScript, Experience with Unit Testing, Very good knowledge of Git, Very good knowledge of SQL Server or Azure SQL, Experience with EF Core, Experience with CI/CD pipelines, Experience with containerised deployments, Experience with event-driven architecture, Good command of English 📃 Skills: C#, .NET, ASP.NET, WebAPI, React, TypeScript, SQL, SQLServer, AzureSQL, EFCore, Git, CI/CD, Docker, Microservices, REST, UnitTesting 🏢 Description: Responsibilities: Designing and implementing scalable backend services and RESTful APIs within a domain-driven and event-driven architecture context, including both modular monolith and microservices approaches Building and maintaining responsive frontend interfaces, ensuring seamless integration with backend systems Contributing to architectural decisions and participating in collaborative design sessions to align technical solutions with business requirements Writing and maintaining unit, integration, and end-to-end tests. Ensuring code quality through thorough code reviews and adherence to team standards Working with CI/CD pipelines, containerised deployments, and infrastructure as code Implementing asynchronous communication patterns and event-based integrations between services Configuring and utilising monitoring and observability tools for application diagnostics and performance analysis Collaborating within an agile team, working closely with business analysts to refine requirements, and actively participating in sprint ceremonies Requirements: At least 3 years of experience on a similar position Very good knowledge of ASP.NET WebAPI (.NET Core) Very good knowledge of React, TypeScript Very good knowledge or experience in Unit Testing and GIT Very good knowledge of SQL Server/Azure SQL, EF Core Good command of English Offer: Constant support of dedicated consultant Employee referral program