.NET / eFront Software Engineer

🏢 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 role involves developing and maintaining an enterprise-grade web application within the .NET ecosystem, with a strong focus on backend development and system architecture. You will design and enhance REST APIs, implement business logic, and integrate modern .NET Core solutions with legacy .NET Framework components. The position emphasizes scalable architecture, database optimization, and high code quality through comprehensive testing. 🗂️ Requirements: 5+ years of experience in .NET development, Strong expertise in .NET Core and backend systems, Experience designing and building REST APIs, Hands-on experience with Entity Framework Core, Experience with relational databases, especially SQL Server, Understanding of software architecture and design patterns, Experience working with .NET Framework 4.8, Experience with unit, integration, and end-to-end testing, Ability to integrate and maintain backend services, Basic knowledge of React or experience collaborating with frontend teams 📃 Skills: .NET, C#, ASP.NET, REST, Swagger, OpenAPI, EntityFramework, SQLServer, SQLite, React, xUnit, NUnit, AI, Copilot, ChatGPT 🏢 Description: Additional information The project focuses on the development and maintenance of an enterprise-grade web application built on the .NET ecosystem, with a strong emphasis on backend and system architecture. The main responsibility is to design and enhance REST APIs and business logic , including integration with existing components based on .NET Framework 4.8. The system relies on relational databases (SQL Server) and ORM solutions such as Entity Framework Core, with a strong focus on quality through multi-level testing. The role also involves collaboration with the frontend layer (React), although it is not the primary focus. The environment requires a high level of autonomy, technical decision-making, and a proactive approach to improving the existing architecture. You’re ideal for this role if you: Have 5+ years of experience in .NET development, with strong expertise in .NET Core and backend systems Are confident in designing and building REST APIs, including architecture and best practices (e.g., Swagger/OpenAPI) Have hands-on experience with Entity Framework Core and relational databases such as SQL Server Understand software architecture, design patterns, and how to build scalable, maintainable systems Are familiar with legacy environments, including .NET Framework 4.8, and can work across modern and existing solutions Have solid experience with testing (unit, integration, end-to-end) and care about code quality Have basic knowledge of React or are comfortable working closely with frontend teams Use AI tools (e.g., Copilot, ChatGPT) to improve development efficiency Take ownership of your work and proactively identify improvements rather than waiting for tasks Your day-to-day responsibilities include:​ Designing, developing, and maintaining backend services using .NET Core Building and enhancing REST APIs, ensuring performance, scalability, and clear documentation (Swagger/OpenAPI) Integrating new features with existing systems based on .NET Framework 4.8 Implementing business logic and ensuring consistency across application layers Working with databases (SQL Server, SQLite) and optimizing data access with Entity Framework Core Writing and maintaining tests (unit, integration, end-to-end) to ensure high code quality Collaborating with frontend developers (React) to ensure smooth end-to-end functionality Participating in architectural discussions and contributing to technical decisions Identifying areas for improvement and proactively proposing enhancements Using AI tools to streamline development and increase productivity

🏢 Summary: The role involves designing, developing, and maintaining applications on the .NET platform, including building new solutions and optimizing existing systems. It focuses on delivering high-quality, secure, and scalable software aligned with business needs in an international environment. The position requires active participation in architecture design, performance optimization, and continuous integration and deployment processes. 🗂️ Requirements: Minimum 3 years of experience in .NET development, Knowledge of MVC, Knowledge of REST API, Experience in team-based software development, Strong knowledge of MS SQL, Strong knowledge of ElasticSearch, Experience with Continuous Integration tools, Experience with Continuous Delivery approach, Knowledge of unit testing, Knowledge of integration testing, Very good command of English 📃 Skills: .NET, MVC, REST, MS SQL, ElasticSearch, Git, TeamCity, CI, CD, UnitTesting, IntegrationTesting 🏢 Description: Your responsibilities Design, create and maintain applications using the .NET platform and environment Understand requirements and transform them into functional applications in line with business objectives Maintain and upgrade existing applications and fix issues Rewriting/making changes in existing code structure to increase efficiency and performance Ensure error-free code that adheres to best coding practices Test, monitor, and make better solutions through incremental updates/new features/app optimization Identify bottlenecks and address issues to ensure the best performance Create architecture, specifications, and user interfaces of .Net applications Innovate and build high-quality software solutions leveraging the versatility of the .NET platform Implement best practices and methodologies for security, quality, and development approach Our requirements Min. 3 years of experience in working in the .NET environment; Knowledge of MVC, Rest API; Experience in team software development; Good knowledge of MS SQL and ElasticSearch; Using Continuous Integration tools (Git,Team City) and the Continuous Delivery approach; Knowledge of unit and integration tests; Very good command of the English language (work as part of an international team); Optional Knowledge of Umbraco, Angular, AWS This is how we work on a project Clean Code code quality measures code review design patterns static code analysis Continuous Deployment Continuous Integration Development opportunities we offer conferences abroad conferences in Poland development budget external training industry-specific e-learning platforms intracompany training mentoring soft skills training space for experimenting substantive support from technological leaders support of IT events technical knowledge exchange within the company the company supports open source projects time for development of your ideas What we offer Opportunities for constant development and work on exciting projects, Working in an international environment, English lessons, Attractive remuneration in Euro, Flexible working hours, Fully or partially paid training and development. Benefits sharing the costs of sports activities sharing the costs of foreign language classes sharing the costs of professional training & courses remote work opportunities flexible working time integration events corporate gym corporate sports team corporate library no dress code coffee / tea drinks parking space for employees leisure zone sharing the costs of tourist services sharing the costs of tickets to the movies, theater employee referral program charity initiatives family picnics

🏢 Summary: Full-stack freelance role focused on building scalable, cloud-native applications using .NET and Angular within the Azure ecosystem. The position involves translating complex business requirements into high-quality software solutions while applying modern architectural patterns and Agile delivery practices. The contract is project-based B2B for an initial 12-month period. 🗂️ Requirements: 4+ years experience with .NET technologies (C#, .NET Core, EF/ORM, WCF), 3+ years experience with Angular or strong React background with recent Angular experience, 2+ years hands-on experience with Azure services (Functions, Logic Apps, Web Apps), Advanced knowledge of architectural and design patterns, Experience with SOAP and REST web services, Experience with SQL and SQL Server, Experience with Git and CI/CD pipelines, Experience with Unit Testing, Fluent English 📃 Skills: .NET, .NETCore, C#, EntityFramework, ORM, WCF, Angular, React, Azure, Functions, LogicApps, WebApps, SQL, SQLServer, Git, CI/CD, SOAP, REST, Agile, UnitTesting 🏢 Description: Join an international team of experts delivering high-impact software solutions for global clients. In this role, you will work in a full-stack capacity, translating complex business requirements into scalable, cloud-native applications. You will collaborate with top-tier professionals to design and implement innovative solutions that address real-world engineering challenges while ensuring the highest industry standards. Form of cooperation: freelance project-specific B2B contract for an initial period of approximately 12 months. Tech stack: Backend: .NET / .NET Core, C#, Entity Framework (or other ORM), WCF, SOAP/REST APIs. Frontend: Angular (primary), React. Cloud: Azure (Functions, Logic Apps, Web Apps, SQL Server). Data: SQL Server. DevOps/Tools: Git, CI/CD, Agile, Unit Testing. Requirements: 4+ years of professional experience with .NET technologies (C#, .NET Core, EF/ORM, WCF) 3+ years of experience in Angular (or strong React background with recent Angular experience) 2+ years of hands-on experience with Azure services (e.g., Functions, Logic Apps, Web Apps) Advanced knowledge of Architectural and Design Patterns Proficiency in Web Services (SOAP/REST) and SQL Experience with Git, Continuous Integration, and Continuous Delivery pipelines Fluent English (written and spoken) for effective international communication Ideally, you’ll also have: Azure Cloud certifications Main responsibilities: Full-Stack Development: Address complex software engineering problems using both object-oriented and functional programming styles. Quality Assurance: Maintain high standards of code quality and testing through Clean Code and Unit Testing practices. Cloud Engineering: Design and develop scalable solutions utilizing a wide range of Azure-hosted services and tools. Agile Delivery: Implement Agile methodologies and modern software delivery techniques, including CI/CD and automated deployment. Professional Growth: Proactively adopt new technologies and frameworks within the Azure Cloud ecosystem to drive project success.

🏢 Summary: The offer is for a Backend .NET Developer responsible for building and maintaining scalable backend solutions within a DevOps-driven environment. The role involves full software development lifecycle participation, cloud integration, and performance optimization. The position requires collaboration in Agile teams and ensuring high code quality and seamless deployment processes. 🗂️ Requirements: Proven experience with .NET development, Strong knowledge of Docker, Strong knowledge of Kubernetes, Familiarity with Microsoft Azure, Experience with Azure DevOps Server, Experience working in Agile environments, Experience implementing CI/CD practices, Ability to optimize application performance and scalability 📃 Skills: .NET, Docker, Kubernetes, Azure, AzureDevOps, CI/CD, Agile 🏢 Description: Main Responsibilities Design, develop, and maintain robust backend solutions. Collaborate across teams to ensure seamless software integration. Participate in the full software development lifecycle. Implement DevOps practices for continuous integration and delivery. Optimize application performance and scalability. Review and improve code quality through peer reviews. Key Requirements Proven experience with .NET development. Strong knowledge of Docker and Kubernetes . Familiarity with Microsoft Azure and Azure DevOps Server . Experience working in Agile environments . Strong problem-solving skills. Nice to Have Experience with microservices architecture . Knowledge of additional programming languages. Familiarity with front-end technologies.

🏢 Summary: The offer is for a Backend .NET Developer responsible for building and maintaining robust backend systems while supporting full software development lifecycle and DevOps practices. The role involves working in Agile teams, ensuring high performance, scalability, and seamless integration of applications. The position also emphasizes containerization and cloud-based solutions using Azure. 🗂️ Requirements: Proven experience with .NET development, Strong knowledge of Docker, Strong knowledge of Kubernetes, Familiarity with Microsoft Azure, Experience with Azure DevOps Server, Experience working in Agile environments 📃 Skills: .NET, Docker, Kubernetes, Azure, AzureDevOpsServer, Agile, DevOps, Microservices 🏢 Description: Main Responsibilities Design, develop, and maintain robust backend solutions. Collaborate across teams to ensure seamless software integration. Participate in the full software development lifecycle. Implement DevOps practices for continuous integration and delivery. Optimize application performance and scalability. Review and improve code quality through peer reviews. Key Requirements Proven experience with .NET development. Strong knowledge of Docker and Kubernetes . Familiarity with Microsoft Azure and Azure DevOps Server . Experience working in Agile environments . Strong problem-solving skills. Nice to Have Experience with microservices architecture . Knowledge of additional programming languages. Familiarity with front-end technologies.

🏢 Summary: Senior technical role responsible for designing and developing enterprise-level systems using .NET and Angular, leading development teams, and overseeing full software lifecycle delivery. The position focuses on architecture, performance, security, quality optimization, and technical standards while contributing to analysis, testing, deployment, and support. It also involves hands-on frontend and backend development, documentation, and release management. 🗂️ Requirements: Minimum 6 years of relevant IT experience, Minimum 3 years in similar leadership position, Bachelor's degree in ICT, Advanced certification in .NET and/or Angular, Participation in at least one full software lifecycle, Expertise in enterprise-level software development, Knowledge of UML and application design in UML, Experience designing data, business logic and UI layers, Experience working in Scrum, Minimum 5 years frontend experience with Angular, Minimum 2 years backend experience with .NET, Experience with systems similar to OPERA EVO, Knowledge of UI/UX design principles, English level B2 (certified) 📃 Skills: .NET, Angular, UML, Scrum, UI, UX, Frontend, Backend, Testing, OPERA 🏢 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 6 years of relevant IT experience Minimum 3 years of experience in similar position Bachelor's degree in ICT At least 1 certification at advanced level in the software development technology domain relevant to the position, i.e. .NET and/or Angular, or an equivalent internationally recognized certification (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 Wide knowledge and 5+ years of frontend experience using Angular Minimum 2 years' experience in backend development (.NET) Previous experience with directly similar systems to OPERA EVO Sound knowledge and/or experience with UI/UX design principles English level: B2 confirmed by a certificate or be willing to take the exam Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 Summary: Fullstack Developer role focused on building and enhancing dynamic web applications using .NET on the backend and React on the frontend. The position involves developing robust, high-performance solutions, integrating APIs, and resolving complex technical issues within a collaborative team environment. Strong emphasis is placed on delivering seamless end-to-end functionality. 🗂️ Requirements: 5+ years of fullstack development experience, .NET backend expertise, Strong React knowledge, Experience with WCF and REST APIs, Database management experience, Proficiency in HTML, JavaScript, CSS, Understanding of message queues, Fluent English communication 📃 Skills: .NET, C#, React, REST, WCF, SQL, HTML, JavaScript, CSS, Databases, MessageQueues, English 🏢 Description: Summary: The ideal candidate is expected to function as a Fullstack Developer, contributing both front-end and back-end functionalities with a strong focus on .NET and React technologies. The primary goal is to enhance the team's capabilities in developing seamless, robust applications. Main Responsibilities: Engage in full-stack development to create dynamic web applications. Implement the front-end components using React. Develop back-end services using .NET. Communicate effectively with team members and stakeholders in English. Investigate and resolve complex technical problems proactively. Collaborate with team members to enhance application performance and usability. Key Requirements: 5+ years of experience in fullstack development. Expertise in .NET for backend development. Strong understanding of React for frontend development. Fluent communication skills in English. Knowledge of Web APIs (WCF and REST APIs). Familiarity with database management. Competence in HTML, JavaScript, and CSS. Understanding of message queues. Nice to Have: Experience with cloud services or platforms. Familiarity with CI/CD practices. Exposure to Agile methodologies.

🏢 Summary: Fullstack Developer role focused on building and enhancing dynamic web applications using .NET on the backend and React on the frontend. The position involves developing robust services, implementing responsive UI components, and resolving complex technical issues. The goal is to strengthen the team’s capability to deliver high-performance, scalable applications. 🗂️ Requirements: 5+ years of fullstack development experience, .NET expertise for backend development, Strong React knowledge for frontend development, Experience with Web APIs (WCF, REST), Database management experience, Proficiency in HTML, JavaScript, CSS, Understanding of message queues 📃 Skills: .NET, React, WCF, REST, WebAPI, HTML, JavaScript, CSS, SQL, Databases, MessageQueues 🏢 Description: Summary: The ideal candidate is expected to function as a Fullstack Developer, contributing both front-end and back-end functionalities with a strong focus on .NET and React technologies. The primary goal is to enhance the team's capabilities in developing seamless, robust applications. Main Responsibilities: Engage in full-stack development to create dynamic web applications. Implement the front-end components using React. Develop back-end services using .NET. Communicate effectively with team members and stakeholders in English. Investigate and resolve complex technical problems proactively. Collaborate with team members to enhance application performance and usability. Key Requirements: 5+ years of experience in fullstack development. Expertise in .NET for backend development. Strong understanding of React for frontend development. Fluent communication skills in English. Knowledge of Web APIs (WCF and REST APIs). Familiarity with database management. Competence in HTML, JavaScript, and CSS. Understanding of message queues. Nice to Have: Experience with cloud services or platforms. Familiarity with CI/CD practices. Exposure to Agile methodologies.

🏢 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).