Senior Developer
On-site · London, England, United Kingdom
Job Summary
Senior Front-End Developer needed to join our London-based team, shaping web experiences from marketing sites to interactive apps. Work with a cross-functional team to deliver solutions using React, HTML5, CSS, and JavaScript; own frontend development within the tech architecture; ensure mobile-first design, accessibility, and SEO; maintain documentation; debug complex issues; provide guidance to peers. Role requires 5+ years in frontend tech, React fluency, cross-browser/device compatibility, and experience with automation tools, external web services, design patterns, and version control. Office presence required a minimum of 3 days per week in London.
Required Qualifications
- 5+ years of experience with Front-End technologies (HTML/CSS/JavaScript)
- Fluency in ReactJS
- Excellent knowledge of Mobile First development
- Knowledge of MVC and Object Oriented design
- Cross-browser and cross-device compatibility experience
- Experience with automation/pre-processing tools (Gulp, Grunt, LESS)
- Experience integrating web solutions with external web services
- Knowledge of design patterns (MVC, observer, OO)
- Experience with pre-processing CSS styling
- Fluency with data formats/protocols (JSON, XML, HTTP)
- Experience with accessibility and SEO guidelines (ARIA, WCAG, ADA)
- Experience with version control systems (SVN, GIT, Mercurial)
- Experience building proof-of-concept/prototypes
- Cloud knowledge (AWS, Azure)
- Experience with Python (optional)
- Proficiency with orchestration tools (LangChain/LangGraph) (optional)
- Familiarity with AEM (optional)
- Tribal Worldwide is an equal opportunity employer.
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