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Senior Developer
Senior Front-End Developer (SFED)
Tribal is a creative force that blends strategy, design, and technology, seeking a talented and experienced Senior Developer to elevate our London-based team. As a Senior Front-End Developer, you’ll blend creative insight with technical expertise to shape bold digital experiences, from marketing sites to interactive web applications.
In this collaborative role, you’ll work alongside a Creative & Tech team—sharing solutions, refining estimates, and embracing diverse front-end technologies including React, HTML5, CSS, and JavaScript while engaging with content management systems.
Hybrid Work Expectations
To foster long-term success, we require new hires to work in our office at least 3 days per week.
Key Responsibilities
- Develop web applications following the latest web standards and leading-edge front-end technologies
- Collaborate across Creative, Business, Tech, and QA teams to ensure solutions meet performance and user requirements (mobile & desktop)
- Own the development of web applications, ensuring alignment with the technical architecture and design guided by the Tech Lead
- Implement user and business requirements, composed of multiple development activities
- Maintain up-to-date, accurate project documentation adhering to best practices
- Debug and troubleshoot complex issues in existing web applications
- Proactively support policy improvements and mentor junior team members to enhance performance and technical skills
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Essential Requirements
Experience & Technical Proficiency
- 5+ years as a front-end developer, with deep proficiency in React and JavaScript/TypeScript
- Expert understanding of modern CSS (CSS Modules, Styled-Components), alongside strong command of:
- Semantic HTML, responsive design principles, and performance optimisation
- Experience with:
- Modern build tools (e.g., Vite, Webpack)
- Git and CI/CD workflows (e.g., GitHub Actions/Workflows)
- Testing expertise:
- Unit, integration, and e2e tests using Jest, React Testing Library, Cypress, or Playwright
- Adherence to accessibility standards (WCAG, ARIA) and SEO best practices
- API integration and backend communication experience
- Comfortable with data formats (JSON, REST, GraphQL), authentication, and secure data handling
- Familiarity with frontend component libraries or design systems
- Experience with Supabase or equivalent backend-as-a-service platforms
- State management knowledge (XState, Zustand)
- Cloud experience (AWS+, Azure)
- Mentoring experience for junior developers
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Desirable (Nice-to-Have)
- Python proficiency
- LLMs, Pydantic, LangChain/LangGraph, or similar orchestration experience
- Adobe Experience Manager (AEM) familiarity
What You’ll Gain
- Global maternity/parental leave
- Competitive benefits package
- Flexible leave (wellness days, compassionate leave, flex hours)
- Family/new parents’ support access
- Early Friday dismissal (3 PM weekly)
- Diversity & Inclusion Board with 13+ affinity groups
- Internal learning & development programs
- Enterprise-wide employee discounts
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