• Develop and maintain responsive web applications using ReactJS, ensuring a seamless experience across devices. • Collaborate with backend, DevOps, and designers to implement new features and optimize the live product. • Support the live platform by identifying and resolving real-time performance issues. • Design scalable solutions with attention to responsive UIs using pure CSS/SCSS without relying on external frameworks. • Mentor junior engineers and provide code reviews to maintain high standards. • Leverage Redux, React-Redux bindings, and middleware (Thunk/Saga) for state management. • Implement RESTful APIs using axios and fetch, with optional GraphQL integration via Apollo client.

**Our craft reflects who we are** craftable software specializes in systems that require quality, reliability and scalability in a highly transactional environment. We rely on our craft and drive to solve these problems, while enjoying the journey. Our mission is to improve every system; functionality; task; with passion, care, skill and experience, because we truly believe that *quality requires craft*. Our current list of customers, among others, includes: the biggest company in the food industry in the Iberian Peninsula; the biggest cruise retailer in the United Kingdom; a next generation cloud communication company in the United Kingdom; the biggest property management systems in France, UK and a disruptive force in the world market. **Why you should pick us** Craft is in our name, our ability to turn software into a craft is our objective. Like a carpenter, we believe our *Skill* and *Expertise* capability increases with *Challenge*. We want you to grow and thrive based on the challenge that our customers bring and the expertise that we share as a team and that we constantly aim to bring into what we do. We love software development and we believe you should too! Concepts like SOLID Principles, Test Driven Development (TDD), Behaviour Driven Development (BDD) and Agile Principles should be something you embrace. Aspect Oriented Programming (AOP) and Functional programming is something that also helps us execute. Our expertise is driven by Innovation: - Continuous Integration - Continuous Deploy - Cloud Services - Search Engines - NoSQL - User Experience - Distributed Message Queuing - Infrastructure as code - Machine learning - Containers We implement and develop on these concepts daily, which you will have a chance to work on. But we won’t stop here, our constant growth drives our innovation and we are always looking for our next big challenge. We enjoy agile as a framework and we feel it is great to help us deliver valuable functionality. Be it with SCRUM and/or Kanban boards it has been helping us translating business needs into features with success.

• Working as part of our Payments Engineering team building new ways for Zeller and third party products to integrate with each other using web sockets and GO. • Meet and set the standard for code quality and testing practices in the team • Perform code reviews, contribute to a testing and automation culture, and support our quality practices • End-to-end ownership and support the features you build and of the quality and performance of the Zeller platform

• Develop user-friendly web pages, using markup languages like HTML • Optimize applications for maximum speed and design mobile-based features • Develop quality mockups and prototypes • Review, maintain and improve company's website • Work together with back-end developers and web designers to improve usability • Write functional requirement documents and guides • Collect feedback from users and build solutions based on this data • Assist back-end developers with coding and troubleshooting • Maintain high quality graphic standards and brand consistency • Keep in touch with latest trends in web development