.Net Senior Developer

🏢 Summary: Opportunity for an experienced React Native Developer to design and develop complex cross-platform mobile applications from scratch, contribute to technical architecture, and drive development best practices. The role involves building high-performance iOS and Android applications, integrating APIs and native libraries, and collaborating in Agile teams. Flexible remote work and career development opportunities are included. 🗂️ Requirements: 4+ years of IT experience, 2+ years of React Native development experience, Expertise in React Native, Expertise in React, Understanding of front-end and back-end development, Experience with RESTful APIs, Experience with GraphQL, Knowledge of HTML, Knowledge of CSS, Experience with Jest, Understanding of React Native architecture, Experience with Xcode, Experience with Android Studio, Knowledge of Agile methodologies, English proficiency 📃 Skills: React, ReactNative, JavaScript, HTML, CSS, GraphQL, REST, Jest, Xcode, AndroidStudio, Swift, Kotlin, Java, CI/CD, Agile, Scrum, Waterfall 🏢 Description: We are looking for an experienced professional who can design and develop complex software systems from scratch, design project-wide technical solutions, and establish and control development best practices. Requirements: - 4+ years of experience in IT - Minimum of 2 years of proven experience as a React Native Developer - Expertise in React Native and React - Comprehensive understanding of front-end and back-end development processes - Strong collaboration and communication skills within cross-functional teams - Ability to adapt quickly to emerging technologies and evolving project requirements - In-depth understanding of React Native architecture, component lifecycle, state management, and hooks - Familiarity with native build tools such as Xcode and Android Studio - Knowledge of native app design principles, offline storage, and performance tuning - Experience with RESTful APIs, GraphQL, and third-party integrations - Sound knowledge of HTML and CSS - Experience in code testing and debugging using Jest - Understanding of software development methodologies including Agile, Scrum, and Waterfall - Strong organizational skills and attention to detail - Excellent spoken and written English Nice to have: - Familiarity with GraphQL integration in frontend applications - Experience creating native modules using Swift, Kotlin, or Java - Knowledge of CI/CD pipelines Responsibilities: - Develop and enhance cross-platform mobile applications using React Native for iOS and Android - Collaborate with design and product teams to create intuitive user interfaces - Optimize applications for performance and scalability - Integrate third-party APIs and native libraries - Conduct code reviews, write unit tests, and debug applications - Apply best practices in coding, architecture, and development methodologies - Provide technical expertise and solutions for complex issues - Participate in Agile ceremonies including stand-ups, sprint planning, and retrospectives We offer: - Projects for clients such as PayPal, Wargaming, Xerox, Philips, Adidas, and Toyota - Competitive compensation based on qualifications and skills - Career development system with clear skill qualifications - Flexible working hours - Remote work options

🏢 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: Full-stack SharePoint developer role focused on designing, developing, and supporting enterprise software systems using Microsoft technologies. The position involves leading development teams, building scalable solutions, managing releases, and contributing across the full software development lifecycle in a Scrum environment. The offer includes private medical care, sports card co-financing, consultant support, and an employee referral program. 🗂️ Requirements: Minimum 2 years of experience in Full-stack SharePoint development or support, Experience with custom SharePoint solutions, SDK, workflows, timer jobs, and features, Experience with Microsoft .NET and .NET Core, Experience with Microsoft SQL Server and T-SQL, Knowledge of Azure DevOps pipelines, Experience with Web Services, REST API, and HTTP API, Experience with HTML, CSS, JavaScript, TypeScript, and React, At least one relevant intermediate-level software development certification, Experience with complete software development lifecycle, Ability to design enterprise-level software systems, Knowledge of UML and application design, Experience designing data, business logic, and UI layers, Experience working in Scrum, Ability to lead technical teams, Strong technical documentation skills, Problem-solving skills, ICT-related degree 📃 Skills: SharePoint, SDK, Workflows, NET, NETCore, SQLServer, TSQL, AzureDevOps, REST, HTTP, HTML, CSS, JavaScript, TypeScript, React, UML, Scrum 🏢 Description: Responsibilities: Designs and develops the system Lead development teams Translates requirements into design Optimizes software from performance, security and quality points of view Produces technical documentation Estimates effort and time for development Sets software development standards Propose technical solutions for business needs and technical problems Collects and interprets software metrics Manages configuration and releases Contributes to requirements analysis, testing, quality assurance, change management, deployment Tests solutions and develops testing tools Documents developments Prototypes solutions Acts as 2nd and 3rd line support Requirements: Minimum 2 years of experience in Full-stack SharePoint support or developer role (custom solutions development, SDK, workflows, timer jobs, features etc.) Microsoft .NET / Microsoft .NET Core, Microsoft SQL Server applications development with T-SQL knowledge, Knowledge of Azure DevOps pipelines Experience with Web Services, REST API, HTTP API Experience with HTML & CSS – responsive design, JavaScript, TypeScript (good understanding of JS as arrow functions, destructing), React At least 1 certification among:Intermediate level certificate in software development relevant to the domain or an equivalent certification recognized internationally (subject to acceptance as a valid credential by the Contracting Authority) Has gone at least 1 time through the complete lifecycle of the solution Expert in developing enterprise level software systems in specified technology domain Knows UML and can design applications in UML Proficient in designing and developing: data layer, business logic layer and UI layer Worked in Scrum developments Is capable for leading technical teams Holds ability to document effectively technical solutions Presents problem solving skills ICT relevant degree is mandatory Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 Summary: Senior Front-End Developer role focused on designing, developing, and maintaining Angular-based applications that consume REST APIs and handle data-intensive integrations. The position involves building reusable, maintainable code and working with distributed data technologies such as Hadoop and MapReduce. The role requires strong debugging skills and collaboration within a cross-functional development team. 🗂️ Requirements: Minimum 5 years of professional experience in front-end development, Strong hands-on experience with Angular, Very good knowledge of TypeScript, Very good knowledge of JavaScript, Experience consuming and processing data from APIs, Ability to write reusable and maintainable code, Strong debugging and problem-solving skills, Expertise in Hadoop, Expertise in MapReduce 📃 Skills: Angular, TypeScript, JavaScript, REST, APIs, Hadoop, MapReduce, Debugging 🏢 Description: Requirements: Minimum 5 years of professional experience in front-end development Strong hands-on experience with Angular Framework Very good knowledge of TypeScript and JavaScript Experience in consuming, processing, and rendering data from APIs Ability to reuse and improve existing code Strong debugging and problem-solving skills Excellent communication skills, with the ability to build trust with both technical teams and business stakeholders Team-oriented mindset and ability to collaborate effectively across teams Expertise in Hadoop and MapReduce Nice to have: Experience working in enterprise software development environments Understanding of application performance optimization Experience working with distributed or data-intensive systems Responsibilities: Design, develop, and maintain front-end applications consuming REST APIs Write clean, reusable, and maintainable code in line with application requirements Work as part of a software development team to ensure that delivered solutions meet quality standards Debug applications and resolve technical issues Reuse and adapt existing code where appropriate to improve efficiency and consistency Suggest enhancements to application procedures, infrastructure, and overall solution design Collaborate effectively with cross-functional teams and contribute to shared project goals Explain complex technical topics in a clear and simple way to non-technical audiences Support a positive and collaborative team environment

🏢 Summary: Software development role focused on building and maintaining .NET-based solutions, designing scalable architectures, and collaborating with stakeholders in an Agile environment. The position involves end-to-end development, REST API integration, SQL Server database design, code quality practices, and continuous improvement initiatives. 🗂️ Requirements: 3+ years of experience with .NET 4.8+, Experience with .NET Core, Knowledge of Microsoft SQL Server, Experience with relational database design, Advanced SQL skills, Understanding of OOP principles, Knowledge of clean architecture design patterns, Experience building and consuming REST APIs, Proficiency with Visual Studio, Proficiency with VS Code, Experience with GitLab, Understanding of DevOps practices, English proficiency at C1 level 📃 Skills: .NET, .NETCore, SQL, SQLServer, OOP, REST, VisualStudio, VSCode, GitLab, DevOps, eFront, WebSphereTX, Agile, Scrum 🏢 Description: Key Responsibilities End-to-End Development: Design logical data models and build robust software solutions aligned with a well-defined, multi-year product roadmap. Technical Design & Innovation: Proactively propose innovative architectural enhancements through controlled proof-of-concepts (spikes) and ensure all solutions adhere to modern software security standards. Collaboration & Delivery: Work hand-in-hand with business stakeholders to translate functional requirements into efficient technical specs. Participate in workload estimation, planning, and proactive status reporting. Code Quality & Mentorship: Maintain high engineering standards by conducting thorough peer code reviews, ensuring excellent test coverage, and managing application source code configuration. Team & Culture: Foster a friendly, supportive environment focused on continuous learning, knowledge-sharing, and team-wide upskilling. Requirements Technical Expertise: 3+ years of professional experience working with .NET 4.8+ and .NET Core . Strong knowledge of Microsoft SQL Server , relational database design (ER models), and advanced SQL. Solid grasp of Object-Oriented Programming ( OOP ) principles and clean architecture design patterns. Hands-on experience building and consuming REST APIs . Proficiency with development and version control tools ( Visual Studio, VS Code, GitLab ). Soft Skills & Methodology: A proactive, problem-solving mindset with a collaborative, team-player attitude. Foundational understanding of DevOps practices. Fluency in English (minimum C1) , with strong written and verbal communication skills. Nice to Have Direct development or configuration experience with the eFront FIA platform (highly advantageous). Familiarity with WebSphere TX . Prior experience working within an Agile/Scrum framework.

🏢 Summary: The offer is for a C++ developer to work on advanced cybersecurity solutions within a legacy Windows-based application, focusing on optimization and system improvement. The role involves enhancing a key system component, ensuring performance, and contributing to future adaptation and operationalization of solutions. You will work in a Scrum team on innovative security projects with modern technologies. 🗂️ Requirements: Bachelor’s Degree in Computer Science, Programming, Engineering or related field, Strong C++ expertise, Experience with Windows application development, Experience with performance optimization, Experience with troubleshooting, Experience with databases, Strong knowledge of OOP, Knowledge of design patterns, Experience with testing practices, Experience with Git, Experience with DevOps tools, English proficiency (B2 minimum) 📃 Skills: C++, Windows, Cybersecurity, OOP, DesignPatterns, Testing, Git, DevOps, Databases, Performance, Troubleshooting, Scrum 🏢 Description: We are looking for experienced developers who want to grow their skills while working on projects in the Cybersecurity industry, involving legacy code. You will join a team responsible for optimizing and improving an application that is a key component of the system. Responsibilities: Building advanced cyber security solutions for applications and systems Development of advanced cybersecurity solutions for applications and systems In the future: adaptation and operationalization of solutions Supporting junior team members Participation in internal initiatives and projects Working within a Scrum team Our Requirements: Bachelor’s Degree (completed or in progress) in Computer Science, Programming, Engineering, or a related field 1+ year of hands-on development experience in C++ and/or C Windows application development experience Experience with performance optimization and troubleshooting Database experience Solid OOP knowledge, design patterns, and testing practices Experience with Git, DevOps, and related tools English proficiency (min. B2) Flexibility to work outside business hours (SLA-based) What can we offer: Flexible working hours An interesting, challenging job in the dynamically developing Capital Group company Possibility of remote work 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 Legimi platform, Multisport card, Company Social Fund, Mentor and Psychologist support, Group Insurance, technical trainings and conferences, languages courses, integration meetings, internal company competitions and much more…

🏢 Summary: Senior .NET Developer role focused on building and scaling enterprise-grade systems in FinTech, HealthTech and AI domains for international and public sector clients. The position involves designing architecture, implementing robust integrations, and delivering high-availability solutions that pass audits and handle high traffic and large data volumes. Strong emphasis on clean architecture, asynchronous processing, and production-ready code. 🗂️ Requirements: Minimum 5 years of experience with .NET and C#, Experience building enterprise systems based on relational SQL databases, Experience with REST and SOAP APIs and system integrations using WebServices and XML, Experience developing multi-layer web applications hosted on IIS, Experience implementing background job processing and asynchronous communication, Ability to write unit and integration tests, Experience with CI/CD pipelines, Knowledge of Clean Architecture, CQRS and MediatR, Experience with high-availability systems operating 24/7, Experience with systems handling 200+ concurrent users and large XML message volumes 📃 Skills: .NET, C#, SQL, PostgreSQL, REST, SOAP, WebServices, XML, IIS, Hangfire, CI/CD, GitHubActions, AzureDevOps, CleanArchitecture, CQRS, MediatR, HA 🏢 Description: Tworzymy produkty z obszaru FinTech, HealthTech i AI (choć nie zamykamy się w sztywnych ramach). Pracujemy w modelach Team Augmentation oraz end-to-end, głównie dla klientów zagranicznych i sektora publicznego w Polsce. Nie opowiadamy historii o „innowacjach” ani „dynamicznym środowisku”. Interesuje nas konkret: kod, architektura i decyzje, które dowożą. Budujemy działające produkty, które przechodzą audyty, skalują się i realnie zdobywają rynek - nie kolejne slajdy ani sprinty do odhaczenia. Stawiamy na odpowiedzialność, techniczne myślenie i sensowną współpracę. A przy okazji - po prostu dobrze się u nas pracuje! Nasze must have Minimum 5 lat doświadczenia w pracy z .NET / C# Doświadczenie w budowie lub rozwoju systemów informatycznych klasy enterprise opartych o relacyjne bazy danych SQL (np. PostgreSQL) Doświadczenie pracy z REST API oraz SOAP, w tym integracji systemowych z wykorzystaniem WebServices i komunikatów XML Doświadczenie w budowie wielowarstwowych aplikacji webowych działających w środowisku IIS (IIS 8 / IIS 10) Doświadczenie w implementacji mechanizmów przetwarzania zadań w tle (np. Hangfire) oraz pracy z komunikacją asynchroniczną Umiejętność pisania testów jednostkowych i integracyjnych Doświadczenie w pracy z CI/CD (GitHub Actions, Azure DevOps) Znajomość Clean Architecture / CQRS / MediatR Doświadczenie w pracy nad systemami: obsługującymi 200+ jednoczesnych użytkowników przetwarzającymi duże wolumeny komunikatów (np. XML) działającymi w trybie wysokiej dostępności (HA) 24/7 Nice to have Doświadczenie pracy z React + TypeScript w projektach komercyjnych Znajomość Material UI / Tailwind / innej biblioteki UI Co możemy Ci zaproponować Współpracę w modelu B2B lub UoP Budżet szkoleniowy (do 2500 zł netto rocznie) Elastyczne godziny pracy i praca zdalna Multisport Plus i prywatna opieka medyczna

🏢 Summary: Development of enterprise-grade systems in FinTech, HealthTech and AI domains using .NET technologies. The role focuses on designing and delivering scalable, high-availability web applications and integrations that pass audits and handle high traffic and large data volumes. Work includes backend architecture, system integrations and maintaining production-ready solutions operating 24/7. 🗂️ Requirements: Minimum 5 years of experience with .NET and C#, Experience building enterprise systems based on relational SQL databases, Experience with REST and SOAP APIs and system integrations using WebServices and XML, Experience developing multi-layer web applications hosted on IIS, Experience implementing background job processing and asynchronous communication, Ability to write unit and integration tests, Experience with CI/CD pipelines using GitHub Actions or Azure DevOps, Knowledge of Clean Architecture, CQRS and MediatR, Experience with high-availability systems operating 24/7, Experience with systems handling 200+ concurrent users and large volumes of XML messages 📃 Skills: .NET, C#, SQL, PostgreSQL, REST, SOAP, WebServices, XML, IIS, Hangfire, Asynchronous, UnitTesting, IntegrationTesting, CICD, GitHubActions, AzureDevOps, CleanArchitecture, CQRS, MediatR, HighAvailability 🏢 Description: Tworzymy produkty z obszaru FinTech, HealthTech i AI (choć nie zamykamy się w sztywnych ramach). Pracujemy w modelach Team Augmentation oraz end-to-end, głównie dla klientów zagranicznych i sektora publicznego w Polsce. Nie opowiadamy historii o „innowacjach” ani „dynamicznym środowisku”. Interesuje nas konkret: kod, architektura i decyzje, które dowożą. Budujemy działające produkty, które przechodzą audyty, skalują się i realnie zdobywają rynek - nie kolejne slajdy ani sprinty do odhaczenia. Stawiamy na odpowiedzialność, techniczne myślenie i sensowną współpracę. A przy okazji - po prostu dobrze się u nas pracuje! Nasze must have Minimum 5 lat doświadczenia w pracy z .NET / C# Doświadczenie w budowie lub rozwoju systemów informatycznych klasy enterprise opartych o relacyjne bazy danych SQL (np. PostgreSQL) Doświadczenie pracy z REST API oraz SOAP, w tym integracji systemowych z wykorzystaniem WebServices i komunikatów XML Doświadczenie w budowie wielowarstwowych aplikacji webowych działających w środowisku IIS (IIS 8 / IIS 10) Doświadczenie w implementacji mechanizmów przetwarzania zadań w tle (np. Hangfire) oraz pracy z komunikacją asynchroniczną Umiejętność pisania testów jednostkowych i integracyjnych Doświadczenie w pracy z CI/CD (GitHub Actions, Azure DevOps) Znajomość Clean Architecture / CQRS / MediatR Doświadczenie w pracy nad systemami: obsługującymi 200+ jednoczesnych użytkowników przetwarzającymi duże wolumeny komunikatów (np. XML) działającymi w trybie wysokiej dostępności (HA) 24/7 Nice to have Doświadczenie pracy z React + TypeScript w projektach komercyjnych Znajomość Material UI / Tailwind / innej biblioteki UI Co możemy Ci zaproponować Współpracę w modelu B2B lub UoP Budżet szkoleniowy (do 2500 zł netto rocznie) Elastyczne godziny pracy i praca zdalna Multisport Plus i prywatna opieka medyczna

🏢 Summary: Long-term project for a Senior/Expert .NET Developer focused on backend and API development within enterprise banking systems. The role involves developing and optimizing software solutions, working with legacy code, and providing technical leadership and mentorship. The position emphasizes high-quality standards, collaboration, and code excellence in a complex financial environment. 🗂️ Requirements: Strong knowledge of C#, Strong knowledge of .NET framework, Expertise in ASP.NET Core, Experience in API development, Experience with SQL Server design and development, Ability to analyze and troubleshoot legacy code, Solid understanding of OOP principles, Knowledge of software engineering best practices 📃 Skills: C#, .NET, ASP.NET, SQL, T-SQL, Git, Jenkins, Angular, HTML, CSS, JavaScript, Visual Studio, Postman, Swagger, Bitbucket, Bootstrap, SQL Server 🏢 Description: We’re looking for an Expert/Senior .NET Developer to join a long-term project for a leading client in the banking industry. Project Type: Enterprise banking systems – backend & API development, code optimization, and mentorship Responsibilities: Design, develop, and maintain software solutions Analyze, refactor, and troubleshoot legacy code Conduct code reviews and uphold high-quality standards Collaborate with QA and Business Analysts Mentor junior developers and provide technical leadership Must-Have Experience: Strong knowledge of C# and the .NET framework Expertise in ASP.NET Core and API development Experience with SQL Server (design & development) Ability to work with and troubleshoot legacy code Solid understanding of OOP and software engineering best practices Nice-to-Have: Familiarity with Git, Jenkins, and testing frameworks Understanding of cloud concepts & web security best practices Knowledge of frontend technologies (Angular, HTML, CSS, JavaScript) Tools & Tech Stack:Visual Studio, Postman, Swagger, Bitbucket, SQL Server Management Studio, T-SQL, Bootstrap (or similar)

🏢 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.