Senior Frontend Security Engineer – React/Next.js

🏢 Summary: Senior Frontend Security Engineer role focused on building and securing modern web applications using React and Next.js. The position centers on architecting security at the edge, implementing robust authentication and frontend protection mechanisms, and integrating with GCP-based microservices. It combines hands-on development, security automation, and technical leadership to enhance a large-scale security platform. 🗂️ Requirements: Minimum 7 years frontend development experience, Expertise in React and Next.js, Strong knowledge of frontend security vulnerabilities (XSS, CSRF, clickjacking, supply-chain attacks), Experience implementing OAuth2 and OpenID Connect authentication, Proficiency in TypeScript, Experience with unit and e2e testing, Experience with CI/CD pipelines, Experience integrating frontend with GCP microservices, Knowledge of REST, GraphQL, or gRPC APIs, Fluent English, Legal right to work in the EU 📃 Skills: React, Next.js, TypeScript, JavaScript, OAuth2, OpenIDConnect, CSP, XSS, CSRF, GraphQL, REST, gRPC, GCP, Cypress, Playwright, CI/CD, Angular, Vue 🏢 Description: Unleash the Future of Web Security — Shape Seamless, Safe User Experiences! Krakow-based opportunity with hybrid work model (up to 3 days remote per week). As a Senior Frontend Security Engineer – React/Next.js , you will be working for our client, a leader in innovative software security solutions. Your expertise will drive the adoption of engineering excellence across a cutting-edge security platform, transforming the way web applications safeguard user data and interactions. This role offers a unique chance to impact security architecture at the edge, ensuring seamless and secure digital experiences for thousands of users. Your main responsibilities: Develop and deliver high-quality, production-ready code with a focus on React Server Components (RSC), Server Actions, and Partial Pre-rendering (PPR). Architect and implement 'Security at the Edge' layers within Next.js to protect user interactions and enhance security posture. Build and maintain Content Security Policies (CSP), secure cookie management, and robust authentication flows using OAuth2/OpenID Connect. Prevent frontend vulnerabilities such as XSS, CSRF, and clickjacking through architectural best practices. Connect frontend architectures to GCP-based microservices via type-safe API contracts utilizing REST, GraphQL, or gRPC. Mentor teams on security best practices and foster a culture of quality, efficiency, and continuous improvement. Lead efforts to automate security checks and optimize developer workflows for agility and security. Stay up-to-date with evolving frontend and security trends, sharing insights and guiding teams toward innovative solutions. You're ideal for this role if you have: At least 7 years of experience in frontend development, with deep expertise in React, Angular, or Vue. Proven track record of mitigating security vulnerabilities at the code level, especially XSS, CSRF, and supply-chain attacks. Strong proficiency in TypeScript, unit/e2e testing (e.g., Cypress, Playwright), and CI/CD processes. Experience connecting frontend systems to GCP microservices with type-safe API contracts (REST, GraphQL, gRPC). Demonstrated leadership in guiding engineering teams and influencing technology direction. Broad technical skill set with the ability to apply the right tools for complex problems. Passion for building better, faster, and safer solutions that make a real difference. It is a strong plus if you have: Experience architecting solutions that identify and solve operational problems or opportunities. Respected reputation for quality development and impactful contributions. Holistic problem-solving mindset with a focus on long-term impact. Language required for the role: Fluent English, both written and spoken. Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Frontend Security Engineer role focused on building secure, production-ready React/Next.js applications with advanced edge security architecture. The position centers on implementing security best practices, preventing frontend vulnerabilities, and integrating secure frontend systems with GCP-based microservices. This role combines hands-on development, security automation, and technical leadership in a hybrid Krakow-based setup. 🗂️ Requirements: Minimum 7 years of frontend development experience, Deep expertise in React and modern frontend frameworks, Strong proficiency in TypeScript, Experience with React Server Components, Server Actions, and Partial Pre-rendering, Proven experience mitigating XSS, CSRF, and supply-chain attacks, Experience implementing OAuth2/OpenID Connect authentication flows, Experience building and enforcing Content Security Policies, Experience integrating frontend with GCP microservices, Experience with REST, GraphQL, or gRPC APIs, Experience with unit and end-to-end testing frameworks, Experience with CI/CD processes, Fluent English, Legal right to work in the European Union 📃 Skills: React, Next.js, TypeScript, JavaScript, Angular, Vue, Cypress, Playwright, CI/CD, OAuth2, OpenID, CSP, REST, GraphQL, gRPC, GCP, XSS, CSRF 🏢 Description: Unleash the Future of Web Security — Shape Seamless, Safe User Experiences! Krakow-based opportunity with hybrid work model (up to 3 days remote per week). As a Senior Frontend Security Engineer – React/Next.js , you will be working for our client, a leader in innovative software security solutions. Your expertise will drive the adoption of engineering excellence across a cutting-edge security platform, transforming the way web applications safeguard user data and interactions. This role offers a unique chance to impact security architecture at the edge, ensuring seamless and secure digital experiences for thousands of users. Your main responsibilities: Develop and deliver high-quality, production-ready code with a focus on React Server Components (RSC), Server Actions, and Partial Pre-rendering (PPR). Architect and implement 'Security at the Edge' layers within Next.js to protect user interactions and enhance security posture. Build and maintain Content Security Policies (CSP), secure cookie management, and robust authentication flows using OAuth2/OpenID Connect. Prevent frontend vulnerabilities such as XSS, CSRF, and clickjacking through architectural best practices. Connect frontend architectures to GCP-based microservices via type-safe API contracts utilizing REST, GraphQL, or gRPC. Mentor teams on security best practices and foster a culture of quality, efficiency, and continuous improvement. Lead efforts to automate security checks and optimize developer workflows for agility and security. Stay up-to-date with evolving frontend and security trends, sharing insights and guiding teams toward innovative solutions. You're ideal for this role if you have: At least 7 years of experience in frontend development, with deep expertise in React, Angular, or Vue. Proven track record of mitigating security vulnerabilities at the code level, especially XSS, CSRF, and supply-chain attacks. Strong proficiency in TypeScript, unit/e2e testing (e.g., Cypress, Playwright), and CI/CD processes. Experience connecting frontend systems to GCP microservices with type-safe API contracts (REST, GraphQL, gRPC). Demonstrated leadership in guiding engineering teams and influencing technology direction. Broad technical skill set with the ability to apply the right tools for complex problems. Passion for building better, faster, and safer solutions that make a real difference. It is a strong plus if you have: Experience architecting solutions that identify and solve operational problems or opportunities. Respected reputation for quality development and impactful contributions. Holistic problem-solving mindset with a focus on long-term impact. Language required for the role: Fluent English, both written and spoken. Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior React Developer role focused on building and optimizing modern, high-performance web applications using cutting-edge front-end technologies in a hybrid Warsaw-based setup. The position involves delivering scalable solutions, implementing testing best practices, and integrating micro front-end architectures. You will collaborate with cross-functional teams to create responsive, high-quality digital products. 🗂️ Requirements: 5+ years of front-end web development experience, Strong expertise in React and TypeScript, Experience with testing frameworks: Jest, Cypress, or Playwright, Experience building responsive, scalable web applications, Knowledge of micro front-end architectures, Experience with reactive programming and RxJS, Experience with modern build tools, Experience working in Agile SDLC environments, Legal right to work in the European Union 📃 Skills: React, Angular, TypeScript, JavaScript, Jest, Cypress, Playwright, RxJS, Webpack, Vite, Vitest, SSR, CSS-in-JS, Microfrontends, HTML, CSS 🏢 Description: Unleash the Future of Web Applications — Drive Innovation with Cutting-Edge Front-End Technologies! Warsaw-based opportunity with hybrid work model (4 days per week in the office) As a Senior React Developer , you will be working for our client, a leader in web application innovation within the technology industry. You’ll contribute to building and executing challenging projects across a variety of initiatives, collaborating closely with stakeholders, UX designers, and development teams to transform requirements into high-impact deliverables. This role offers a unique chance to learn new technologies and continually elevate your skills while shaping the future of digital experiences. Your main responsibilities: Develop and maintain modern, dynamic web applications using React, Angular, and TypeScript. Collaborate with cross-functional teams to translate user requirements into clean, scalable code. Implement best practices in testing using Jest, Cypress, or Playwright to ensure quality and performance. Integrate micro front-end architectures and reactive programming techniques such as RxJS. Optimize applications for maximum speed, scalability, and responsiveness. Contribute to code reviews, documentation, and continuous improvement processes. Leverage modern build tools like Webpack and Vite to streamline development workflows. Stay updated on industry trends and introduce innovative solutions to technical challenges. You're ideal for this role if you have: 5+ years of hands-on experience in front-end web development. Strong expertise in React, TypeScript, and testing frameworks like Jest, Cypress, or Playwright. Proven ability to deliver rich, responsive web applications with clean code. Familiarity with micro front-end architectures and reactive programming, particularly RxJS. Experience working in agile SDLC environments, including research, design, and engineering phases. Excellent communication skills and ability to manage multiple projects simultaneously. Self-motivated, innovative mindset with strong organizational skills. It is a strong plus if you have: Bachelor's degree in Computer Science or related field. Experience with SSR, CSS-in-JS, Vite, Vitest, and Webpack. Knowledge of micro front-end development and advanced build pipelines. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior ReactJS UI Engineer role focused on leading front-end architecture and UX optimization for scalable, high-performance web applications. The position involves driving UI enhancements, implementing design patterns, and delivering robust React-based solutions in a hybrid work model. You will collaborate across teams to build stable, user-centric applications used globally. 🗂️ Requirements: 7+ years experience in production React ecosystem applications, Strong proficiency in React and TypeScript, Commercial experience in web development, Experience translating requirements into wireframes and high-fidelity prototypes, Solid understanding of SDLC, Experience with front-end architecture and Design Patterns, Strong troubleshooting and problem-solving skills, Familiarity with CI/CD and DevOps practices 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, SDLC, CI/CD, DevOps, UX, UI, Architecture, Prototyping, Wireframing, DesignPatterns 🏢 Description: Unleash innovation in front-end development — shape the future of seamless UI experiences! Krakow-based opportunity with hybrid work model (up to 3 remote days per week). As a Senior ReactJS UI Engineer – Front-End Architecture & UX Optimization , you will be working for our client, a leading technology company focused on delivering cutting-edge web applications. You will drive UI enhancements, architect scalable front-end solutions, and optimize user experience to ensure high performance and stability across platforms—contributing to innovative projects that impact users worldwide. Your main responsibilities: Lead UI enhancements and improvements to elevate overall UX and application stability Participate in designing robust front-end architecture aligned with best practices Implement solutions utilizing proven Design Patterns for scalable and maintainable code Analyze requirements thoroughly to suggest improvements and optimizations Manage changes effectively throughout the Service management lifecycle Develop and prototype application features to validate concepts and designs Provide prompt and effective support to address and resolve user issues Collaborate with cross-functional teams to deliver high-quality solutions You're ideal for this role if you have: 7+ years of professional experience in production React ecosystem applications, including UI/UX design Strong proficiency in React and TypeScript Web development Proven experience in translating product requirements into wireframes and high-fidelity prototypes Solid understanding of the Software Development Life Cycle (SDLC) Exceptional troubleshooting and problem-solving skills in high-pressure environments Familiarity with DevOps practices like CI/CD pipelines It is a strong plus if you have: (optional) Experience with modern UI design tools and frameworks Certifications related to React, TypeScript, or Front-End architecture Language Required for the role: Fluent English command, both written and spoken Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER

🏢 Summary: Senior React Developer role focused on building and optimizing modern, scalable web applications using cutting-edge front-end technologies in a hybrid work model. The position involves collaborating with cross-functional teams, implementing micro front-end architectures, and ensuring high-quality code through modern testing practices. It offers the opportunity to drive innovation and continuously enhance technical expertise. 🗂️ Requirements: 5+ years of experience in front-end web development, Strong expertise in React, Strong expertise in TypeScript, Experience with testing frameworks (Jest, Cypress, or Playwright), Experience building responsive, scalable web applications, Familiarity with micro front-end architecture, Knowledge of reactive programming (RxJS), Experience with modern build tools, Experience working in Agile SDLC environments, Legal right to work in the European Union 📃 Skills: React, Angular, TypeScript, JavaScript, Jest, Cypress, Playwright, RxJS, Webpack, Vite, Vitest, SSR, CSS-in-JS, HTML, CSS 🏢 Description: Unleash the Future of Web Applications — Drive Innovation with Cutting-Edge Front-End Technologies! Warsaw-based opportunity with hybrid work model As a Senior Front-End Developer , you will be working for our client, a leader in web application innovation within the technology industry. You’ll contribute to building and executing challenging projects across a variety of initiatives, collaborating closely with stakeholders, UX designers, and development teams to transform requirements into high-impact deliverables. This role offers a unique chance to learn new technologies and continually elevate your skills while shaping the future of digital experiences. Your main responsibilities: Develop and maintain modern, dynamic web applications using React, Angular, and TypeScript. Collaborate with cross-functional teams to translate user requirements into clean, scalable code. Implement best practices in testing using Jest, Cypress, or Playwright to ensure quality and performance. Integrate micro front-end architectures and reactive programming techniques such as RxJS. Optimize applications for maximum speed, scalability, and responsiveness. Contribute to code reviews, documentation, and continuous improvement processes. Leverage modern build tools like Webpack and Vite to streamline development workflows. Stay updated on industry trends and introduce innovative solutions to technical challenges. You're ideal for this role if you have: 5+ years of hands-on experience in front-end web development. Strong expertise in React, Angular, TypeScript, and testing frameworks like Jest, Cypress, or Playwright. Proven ability to deliver rich, responsive web applications with clean code. Familiarity with micro front-end architectures and reactive programming, particularly RxJS. Experience working in agile SDLC environments, including research, design, and engineering phases. Excellent communication skills and ability to manage multiple projects simultaneously. Self-motivated, innovative mindset with strong organizational skills. It is a strong plus if you have: (optional) Bachelor's degree in Computer Science or related field. Experience with SSR, CSS-in-JS, Vite, Vitest, and Webpack. Knowledge of micro front-end development and advanced build pipelines. Language Required for the role: Fluent Polish and English Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Fullstack Engineer role focused on designing and developing scalable, user-centric applications using Java and React in a hybrid Krakow-based environment. The position involves software architecture design, UI improvements, backend development, and DevOps-driven automation to enhance application stability and operational efficiency. The role supports digital transformation through robust system design and continuous service improvement. 🗂️ Requirements: Minimum 5 years of experience in Java production application development, Experience with front-end development using React, Strong proficiency in Java and Web API development, Experience in building secure and scalable backend services, Expertise in database design with PostgreSQL, Experience with T-SQL scripting, query optimization, performance tuning, Hands-on experience with CI/CD pipelines, Strong understanding of SDLC, Fluent English, Legal right to work in the European Union 📃 Skills: Java, React, WebAPI, PostgreSQL, T-SQL, SQL, CI/CD, DevOps, SDLC, AWS, Azure 🏢 Description: Unleash innovation by shaping the future of software architecture and user experience! Krakow-based opportunity with hybrid work model, offering flexibility and dynamic collaboration. As a Senior Fullstack Engineer – Java and React Development , you will be working for our client in the technology industry, focusing on designing scalable, efficient, and user-centric applications. You will contribute to creating cutting-edge solutions that enhance UX, application stability, and operational efficiency, supporting the digital transformation journey. Your main responsibilities: Participating in software architecture design to build robust systems. Leading UI enhancements and improvements to elevate user experience and application stability. Implementing solutions following best Design Patterns for maintainability and scalability. Analyzing requirements to fully understand solutions and recommending data-driven improvements. Creating comprehensive documentation for developed solutions to ensure clarity and knowledge sharing. Developing and testing application prototypes to validate concepts and designs. Managing changes through the Service Management lifecycle, ensuring smooth transitions. Contributing actively to automation initiatives and Service Management process improvements. Providing exceptional customer support by addressing issues promptly and effectively. Communicating with customers to understand needs and deliver tailored solutions. You're ideal for this role if you have: At least 5 years of professional experience in production applications development in Java, including front-end development with React. Strong proficiency in Java and Web API development, with a focus on building secure, scalable backend services. Expertise in database design, particularly with PostgreSQL, T-SQL scripting, query optimization, and performance tuning. Hands-on experience with DevOps practices like CI/CD pipelines. Deep understanding of the Software Development Life Cycle (SDLC), from requirements gathering to deployment and maintenance. Exceptional problem-solving skills with keen attention to detail, ensuring high-quality deliverables. It is a strong plus if you have: Experience with cloud platforms (e.g., AWS, Azure). Certifications in Java, React, or DevOps tools. Language Required for the role: Fluent English, with excellent communication skills. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Fullstack Engineer role focused on designing and building scalable Java and React applications in a hybrid model. The position involves architecture design, backend and frontend development, DevOps practices, and driving high-quality software delivery across the full SDLC. 🗂️ Requirements: 8+ years of experience in Java application development, Strong proficiency in Java and React, Experience in Web API development, Experience building scalable backend services, Strong SQL skills, Experience with PostgreSQL, Experience with T-SQL scripting, Experience in query optimization and performance tuning, Experience with CI/CD pipelines, Strong knowledge of SDLC 📃 Skills: Java, React, SQL, PostgreSQL, T-SQL, CI/CD, DevOps, SDLC, WebAPI, REST, DesignPatterns, UX 🏢 Description: Empower innovation at the forefront of software development — shape scalable solutions that transform user experiences! Krakow-based opportunity with hybrid work model (up to 3 remote days per week). As a Senior Java & React Fullstack Engineer – Software Development , you will be working for our client, a leading technology company dedicated to delivering cutting-edge digital solutions. You’ll contribute to designing and building robust applications that enhance customer engagement and operational efficiency, fueling digital transformation and innovation. Your main responsibilities: Participate in software architecture design to ensure scalable, secure, and high-quality systems. Lead UI improvements and implement solutions to elevate UX and application stability. Develop according to best practices and Design Patterns to produce maintainable and efficient code. Analyze requirements thoroughly and recommend enhancements for optimal solutions. Create clear documentation to support ongoing development and maintenance. Develop and validate application prototypes to test concepts and user interactions. Manage changes throughout the Service Management lifecycle, supporting automation and continuous improvement initiatives. Provide exceptional customer support by promptly addressing and resolving technical issues. Communicate effectively to understand customer needs and deliver tailored solutions. You're ideal for this role if you have: 8+ years of professional experience in Java application development, including front-end (preferably React). Strong proficiency in Java, Web API development, and building scalable backend services. Solid SQL skills with PostgreSQL, including T-SQL scripting, query optimization, and performance tuning. Experience with DevOps practices such as CI/CD pipelines. Extensive knowledge of the SDLC, from requirements gathering to deployment and maintenance. Exceptional problem-solving skills and keen attention to detail to ensure high-quality deliverables and resolve complex issues efficiently. It is a strong plus if you have: (optional) Certifications in Java, React, or DevOps. Experience with cloud platforms such as AWS or Azure. Language Required for the role: Fluent English proficiency. Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Backend Engineer role focused on building secure, scalable backend services in Python and Node.js for advanced cybersecurity platforms. The position involves architecting and operating cloud-native solutions on GCP, optimizing databases, and implementing secure authentication flows. You will drive automation, reliability, and best practices in a hybrid Krakow-based environment. 🗂️ Requirements: Minimum 6 years backend development experience, Expertise in Python, Expertise in Django, Expertise in Node.js, Expertise in TypeScript, Experience with NestJS, Hands-on experience with GCP services, Experience with GKE, Experience with Cloud Run, Experience with Pub/Sub, Experience with Terraform, Strong knowledge of security principles, Experience implementing OAuth2, Experience implementing OpenID Connect, Experience with PostgreSQL, Ability to design scalable backend systems, Fluent English, Legal right to work in the EU 📃 Skills: Python, Django, Node.js, TypeScript, NestJS, GCP, GKE, CloudRun, PubSub, PostgreSQL, Terraform, OAuth2, OpenIDConnect, Go, Rust, Filestore 🏢 Description: Unleash innovation in security — shape the future of cyber defense! Krakow-based opportunity with hybrid work model As a Senior Python & Node.js Backend Engineer , you will be working for our client, a leading player in the cybersecurity industry, dedicated to building cutting-edge security platforms that protect organizations worldwide. You will contribute to developing innovative solutions that enhance digital safety, automation, and reliability—driving the next generation of security technology. Your main responsibilities: Hands-on development of high-quality, production-grade backend services in Python (Django) and Node.js (TypeScript/NestJS). Architect scalable, secure solutions on Google Cloud Platform (GKE, Cloud Run, Pub/Sub) and optimize PostgreSQL database performance. Lead the lifecycle management of cloud-native services, ensuring resilience, observability, and cost-efficiency. Design and implement OAuth2/OpenID Connect flows within GCP environments. Translate business opportunities into effective technical solutions. Develop automation to improve deployment, monitoring, and maintenance processes. Mentor team members and promote engineering best practices. Stay updated with the latest industry trends and share knowledge across teams. You're ideal for this role if you have: At least 6 years of experience in backend development or related fields. Deep expertise in Python (Django) and Node.js (TypeScript/NestJS). Hands-on experience with GCP services (Cloud Run, GKE, Filestore) and Infrastructure as Code (Terraform). Strong understanding of security principles, including zero trust models. Ability to build scalable, high-performance backend services, including some experience with Go or similar languages. A full-stack understanding with a focus on backend systems. Proven track record of creating secure, reliable, and efficient backend solutions. Demonstrated mastery in your technical discipline and a passion for engineering excellence. It is a strong plus if you have: Experience with Go, Rust, or other emerging languages. The ability to identify problems or opportunities and engineer effective solutions. Respected for your craftsmanship, not just your ideas. A holistic view to complex problem solving. Language Required for the role: Fluent English (written and spoken) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Fullstack Engineer role focused on .NET and React development for enterprise-grade applications, driving scalable backend services and modern UI solutions. The position involves leading architectural decisions, enhancing CI/CD processes, and improving application performance and user experience. Candidates will contribute across the full SDLC while supporting digital transformation initiatives. 🗂️ Requirements: Minimum 7 years of professional experience in .NET production development, Strong experience with C# and Web API, Hands-on experience with React, Advanced SQL skills with SQL Server and T-SQL, Experience with DevOps practices and CI/CD processes, Solid understanding of SDLC, Fluent English (written and spoken), Legal right to work in the European Union 📃 Skills: .NET, C#, WebAPI, React, SQL, SQLServer, T-SQL, DevOps, CI/CD, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Fullstack Engineer role focused on building and enhancing scalable enterprise applications using .NET and React within a hybrid Krakow-based setup. The position involves leading UI improvements, contributing to architecture and DevOps automation, and delivering high-quality, secure backend and frontend solutions. The engineer drives full SDLC activities, from design and development to deployment and support. 🗂️ Requirements: Minimum 7 years of professional experience in .NET production application development, Strong experience with React for frontend development, Proficiency in C# and Web API development, Advanced SQL Server skills including T-SQL and query optimization, Experience with DevOps practices and CI/CD processes, Solid understanding of SDLC, Fluent English, Legal right to work in the European Union 📃 Skills: .NET, C#, WebAPI, React, SQL, SQLServer, T-SQL, CI/CD, DevOps, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.