React Frontend Engineer

Role Description We are looking for the best talent… and we would love you to join our team! UST is a multinational company headquartered in North America, certified as a Top Employer, with more than 35,000 employees worldwide and a presence in over 30 countries. We are leaders in digital technology services and deliver large-scale technology solutions for major companies. What are we looking for? We are looking for a REACT Frontend Engineer with solid experience in developing modern frontend applications, capable of designing scalable architectures and participating throughout the entire solution lifecycle, from design to deployment and monitoring. The successful candidate will work in complex, collaborative environments, contributing to the creation of high-quality products through development best practices, automated testing, and Agile methodologies. Location: Madrid, Spain (hybrid model) On-site frequency: 3 days in the office and 2 days working remotely Language: C1 English required Main Responsibilities Design, develop, and maintain frontend applications using React, JavaScript, and TypeScript.Define and evolve modern, scalable, and maintainable frontend architectures.Implement automated tests using Jest and React Testing Library.Participate in continuous integration and continuous delivery processes (CI/CD).Monitor applications and ensure their performance, stability, and quality.Collaborate with multidisciplinary teams following Agile methodologies.Apply software development best practices and quality standards.Contribute to continuous improvement initiatives throughout the DevOps lifecycle. Key Requirements More than 5 years of experience in frontend development.Solid experience with:ReactJavaScript (ES6+)TypeScriptExperience designing frontend architectures.Advanced knowledge of automated testing:JestReact Testing LibraryExperience working with DevOps practices and CI/CD pipelines.Ability to design, develop, deploy, and monitor applications in production environments.Excellent communication and teamwork skills.C1 English level or higher. Nice to have Experience with Angular.Knowledge of OpenAPI.Experience with Kubernetes (PKS).Experience with TDD and/or BDD methodologies.Experience working in high-performing Agile teams. What Do We Offer? 23 days of annual leave, plus 24th and 31st December.Benefits including health insurance, life insurance, and accident insurance.Flexible compensation programme.Access to training and certification platforms.Career development plan and professional stability.Employee referral programme with incentives.Hybrid working model and flexible working arrangements.Exclusive discounts and employee benefits. If you would like to continue growing as a Frontend React Engineer in an innovative, international technology environment, we would love to meet you. Apply now and let's talk! Commitment to Diversity: At UST, we promote equal opportunities and do not discriminate based on race, gender, disability, age, religion, sexual orientation, or nationality. We are firmly committed to inclusion and diversity. Skills Frontend Development, React, Test-Driven Development, Kubernetes