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Senior frontend developer (react / typescript)

Leavesden
Mixam
Developer
€70,000 a year
Posted: 4 May
Offer description

About the role

We’re looking for a Senior Frontend Developer to lead the development of modern, scalable web applications. You’ll play a key role in shaping frontend architecture, integrating with backend services, and delivering high-quality user experiences. This role suits someone who is comfortable working across the stack when needed and thrives in a fast-paced, agile environment.


Key Responsibilities

* Build and maintain high-quality, performant web applications using React, TypeScript, and modern JavaScript
* Design and implement reusable, scalable frontend components and architecture
* Integrate with REST APIs and backend services, ensuring robust data handling and error management
* Collaborate closely with backend developers, designers, and product teams
* Occasionally contribute to backend development (e.g., creating or extending APIs)
* Manage multiple tasks and priorities in an agile, sprint-based workflow
* Write clean, maintainable, and well-tested code
* Participate in code reviews and contribute to best practices and technical standards


Required Qualifications

* Strong proficiency in React, TypeScript, and modern JavaScript (ES6+)
* Solid understanding of frontend tools and workflows, including Node.js, npm, and Webpack
* Experience integrating with and consuming RESTful APIs
* Proficient in HTML5, CSS3, and responsive design best practices
* Experience with styling frameworks such as Styled Components and/or Bootstrap 5
* Strong problem‑solving skills with keen attention to detail
* Ability to manage multiple priorities and switch contexts effectively
* Experience working in Agile/Scrum environments


Preferred Qualifications

* Exposure to Java (Spring Boot) and backend API development
* Full‑stack mindset with the ability to contribute beyond the frontend when needed
* Experience with performance optimisation and frontend architecture at scale
* Experienced using git


Working Style

* Self‑driven and proactive
* Comfortable balancing multiple priorities
* Strong communicator who can collaborate across disciplines
* Pragmatic approach to problem‑solving and delivery


Why Join Us?

This is your chance to be part of something new and exciting – helping to establish Mixam in Japan while being backed by an experienced, supportive international team. You’ll play a key role in shaping how we support our Japanese customers and, as the team grows, you’ll have the opportunity to grow with it. Make this section something tailored to the role.


Equality, Diversity & Inclusion:

At Mixam, diversity, equity and inclusion are at the heart of who we are, and we welcome applications from people of all backgrounds. We know few people meet every requirement, so if you’re excited about this role, we’d love to hear from you and we’ll consider your overall experience and potential. We’re also committed to minimising our environmental impact and creating a workplace where everyone feels valued and supported.

Mixam. The Smart Way to be Hired.

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