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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Front End developer Next/React - **Company:** Amaris - **Location:** Lisbon, OH, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** HTML, Application Programming Interfaces (APIs), Component-Based Software Engineering, Confluence, JIRA, Cascading Style Sheets (CSS), Software Quality, Code Reuse, Code Review, Middleware, Node.Js, E2e Testing, Swagger, Software Engineering, Software Systems, SonarQube, TypeScript, Web Platforms, Openapi, Tailwind, ReactJS, Express.js, Backend, Vue.js, Information Technology, Atlassian Tools, Npm(Software), Front End Software Development, Restful APIs - **Published:** July 17, 2026 - **Apply:** https://careers.mantu.com/apply ## About the Role * Experience in frontend development (minimum 2 years), including design and implementation with Next/React, CSS, Node.js, npm * Experience with API middleware development is a plus * Experience with e-commerce platforms and technologies is a plus * Familiarity with the Alokai platform and/or Express.js framework is highly desirable * Proficiency in Next/React.js, Typescript, HTML, CSS, Vue.js, Tailwind * Experience with code quality and security tools such as SonarQube and Snyk * Experience with Atlassian Suite (Confluence/Jira) * Experience with RESTful APIs (Swagger/OpenAPI) * Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field * English fluent. Portuguese is highly desirable * You demonstrate strong problem-solving and analytical skills * You demonstrate excellent communication skills and ability to work with multinational, cross-functional teams * You demonstrate a proactive attitude and eagerness to explore new technologies * You demonstrate the ability to work independently and as part of a team in a fast-paced Agile environment ## Description You will join our team in Lisbon, working three times per week from the office, to enhance and maintain our Client & Market platforms for luxury Maisons. As a Frontend Software Engineer, you will design, develop, and maintain high-quality software solutions with a strong emphasis on Next/React JS for the frontend and API middleware for the backend. You will leverage your understanding of composable architectures and modern frontend development principles to build scalable, maintainable, and performant applications. You will operate in a global, multi-time-zone environment, collaborating with cross-functional teams to ensure integration, scalability, and performance across digital platforms. Your Missions: * Develop and maintain user interfaces using Next/React JS, ensuring a responsive, accessible, and engaging user experience * Implement and adhere to the latest frontend development principles and best practices, including component-based architecture, state management, and testing * Write clean, well-documented, and testable code * Participate in code reviews to ensure code quality and knowledge sharing * Design, develop, and maintain API middleware to support frontend functionality and integrate with various backend systems * Utilize and maintain the Alokai platform to develop and integrate solutions * Contribute to the design and implementation of composable architectures, promoting code reuse, maintainability, and scalability * Collaborate effectively with product managers, designers, and other engineers to define, design, and ship new features * Write unit, integration, and end-to-end tests to ensure the quality and reliability of the software * Identify and implement opportunities to improve the development process and codebase, * An environment where trust has a central place: 70% of our key leaders started their careers at the first level of responsibilities * A robust training system with our internal Academy and 250+ available modules * A vibrant workplace that frequently gathers for internal events (afterworks, team buildings, etc.) * At Mantu, sustainability is part of everything we do. You'll have the opportunity to turn your ideas into action and make a tangible impact. Every day, our teams bring our ESG commitments to life, from reducing our footprint to driving positive change within our communities. Through our WeCare Together program, you'll be empowered to design and lead projects that create real social or environmental impact, with the company's full support., At Amaris, we strive to provide our candidates with the best possible recruitment experience. We like to get to know our candidates, challenge them, and be able to give them proper feedback as quickly as possible. Here's what our recruitment process looks like: Brief Call: Our process typically begins with a brief virtual/phone conversation to get to know you! The objective? Learn about you, understand your motivations, and make sure we have the right job for you! Interviews (the average number of interviews is 3 - the number may vary depending on the level of seniority required for the position). During the interviews, you will meet people from our team: your line manager of course, but also other people related to your future role. We will talk in depth about you, your experience, and skills, but also about the position and what will be expected of you. Of course, you will also get to know Amaris: our culture, our roots, our teams, and your career opportunities! Case study: Depending on the position, we may ask you to take a test. This could be a role play, a technical assessment, a problem-solving scenario, etc. As you know, every person is different and so is every role in a company. That is why we have to adapt accordingly, and the process may differ slightly at times. However, please know that we always put ourselves in the candidate's shoes to ensure they have the best possible experience. We look forward to meeting you! ## Related Videos - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. 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