Senior Front End Engineer - React

Role type: Contract 

Location: London Hybrid

Preferred start date: ASAP

LIFE AT SATALIA

As an organisation, we push the boundaries of data science, optimisation and artificial intelligence to solve the hardest problems in industry.  Satalia is a community of individuals devoted to working on diverse and interesting projects that will challenge, and allow you to develop new skills, lead and contribute to the overall community.

Our ambition is to become a decentralised organisation of the future.  Today this involves developing tools and processes to liberate and automate manual repetitive tasks, with a focus on freedom, transparency and trust.

At the core of our thinking is an approach to wellbeing and inclusivity.  We unpack human behaviour and unpick prejudice to ensure a safe and inviting environment.

THE ROLE

As a Senior Front-End Engineer, you won't just be writing code; you'll be a pivotal architect, owning the end-to-end delivery of high-quality, production-ready React single-page applications that power our cutting-edge solutions. This role offers the unique opportunity to drive technical excellence by championing code quality, robust testing (Vitest, Cypress), and best practices in front-end architecture, performance, and accessibility. You'll thrive in an Agile environment, contributing actively to workstreams, while also building modular, reusable components with Storybook and integrating with diverse 3rd party systems. Beyond technical contributions, you'll play a key role in shaping our team, mentoring junior developers, and confidently collaborating with both technical and non-technical stakeholders. If you're passionate about full ownership, continuous learning, and making a tangible impact on complex projects, then get in touch.

YOUR RESPONSIBILITIE

• Creating prototypes and high-quality production ready React front-end single page applications.
• Driving forward the quality – in code, unit testing, accessibility, performance, code reviews.
• Delivering on an Agile workstream of front-end developers on a project, contributing to daily stand-ups, planning, and estimates.
• Conversing confidently with technical and non-technical colleagues.
• Building modular layouts, reusable code and libraries for future use.
• Cooperating with design and marketing teams to gather and refine specifications and requirements for development.
• Being involved in existing and new integrations for the platform.
• Having full end-to-end ownership from idea to delivery, covering ongoing maintenance, expansion and scaling.
• Staying current with evolving standards and technologies, learning new skills as needed.
• Mentoring junior candidates.

MINIMUM QUALIFICATIONS / SKILLS

• Strong commercial experience with hands-on React development.
• Mastery of semantic HTML5, CSS3 (SASS/LESS), and TypeScript (as a preprocessor for JavaScript ES6+), adhering to industry coding standards.
• Proficient in state management with React Query.
• Solid understanding of fluid responsive layouts, cross-browser/device compatibility, and performance optimization, accessibility, SEO, security, and usability best practices.
• Experience with modern front-end build tools (e.g., Vite) and component development (Storybook).
• Commercial experience with SPA solutions, ideally for administrative CMS platforms, and integrating with 3rd party systems.
• Extensive experience with unit, E2E, and regression testing (Vitest, React Testing Library, Cypress). Experience with Jest is also valuable.
• Commercial experience using Git for Continuous Integration in large development teams.
• Solid understanding of Agile methodologies (Kanban and/or Scrum/sprint planning, story point estimation, refinement, retrospectives, demos).
• Excellent communication skills, capable of interacting directly with teams and stakeholders.
• Experience mentoring junior team members.
• Willingness to contribute to both large, complex projects and smaller tasks.

IF YOU KNOW SOME OF THIS EVEN BETTER

• Experience with Next.js for server-side or serverless solutions.
• Experience with Mock Service Worker for API mocking.
• Experience with React Hook Form for form state management.
• Experience of working with other CMS platforms such as AEM, Sitecore or SFCC.
• Any knowledge of Node.js, Express, SQL, Lambda, AWS.
• Experience of working on Java/Node/C#/PHP projects would be beneficial.

WE OFFER

• Benefits - enhanced pension, life assurance, income protection, private healthcare; 
• Remote working - café, bedroom, beach - wherever works;
• Truly flexible working hours - school pick up, volunteering, gym;
• Generous Leave - 27 days oliday plus bank holidays and enhanced family leave;
• Annual bonus - when Satalia does well, we all do well;
• Impactful projects - focus on bringing meaningful social and environmental change;
• People oriented culture - wellbeing is a priority, as is being a nice person;
• Transparent and open culture - you will be heard;
• Development - focus on bringing the best out of each other;

Satalia is home to some of the brightest minds in AI and if you’re looking to join a company who not only values autonomy and freedom, but embraces a culture of inclusion and warmth, we’d love to hear from you.

We aim to respond to all applications within 2 weeks. If you have not heard from us within 2 weeks this means your application has been unsuccessful.

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Good luck!