Senior Frontend Engineer

Job Responsibility

Designing, implementing, and maintaining workflow-related UI features in hx Renew, delivering user interfaces that are both performant and reliable
Translating designs into production-ready React components using shadcn and tailwindcss, ensuring alignment with hx's design system
Acting as the primary frontend voice within your product team, collaborating with product managers, backend engineers, and designers to define requirements and solutions
Extending and maintaining hx's shared component library, driving consistency and scalability across multiple product teams
Leading by example within the frontend community, supporting less-experienced engineers through mentoring, reviews, and shared learning
Improving reliability through rigorous testing (unit, component, integration) and strengthening CI/CD processes for frontend delivery

Delivered large-scale React applications in production, demonstrating mastery of component design, state management, and frontend architecture
Built and maintained design systems or component libraries that enabled consistent and accessible UIs across multiple products or teams
Implemented complex frontend features involving API integrations and business logic that improved usability and performance for end users
Strengthened engineering practices by introducing or enhancing testing frameworks and CI/CD pipelines for frontend systems
Led or mentored peers within a frontend engineering community, raising quality through code reviews, documentation, or technical guidance
Worked effectively in cross-functional product teams, demonstrating ownership, adaptability, and a focus on delivering impact for users

Share Options at a highly successful Series B company
25 days of non-working + 14 Polish bank holidays
£5,000 budget for Learning & Development
Mental Health Support and Therapy via Spectrum Life
Optional for you: access to Healthcare package provided by Luxmed + Multisport (fully funded by yourself as B2B Contractor)
Top-spec laptop (MacOS or Windows)
Share Options at a highly successful Series B company
£5,000 budget for learning & development
26 days of holiday + 14 Polish bank holidays
Company pension
10 days company sick pay at 100% salary, thereafter in line with labour law
Mental health support and therapy via Spectrum Life
Monthly wellbeing allowance via Juno
Healthcare package provided by Luxmed
Multisport card at Classic level
Top-spec work equipment (MacOS / Windows + additional monitors, mechanical keyboards etc)
Top-spec equipment (laptop, screens, adjustable desks, etc.)
Regular remote and in-person hackathons, lunch and learns, socials, and game nights
Team breakfasts and lunches, snacks, drinks fridge, and a fun office at The Brain Embassy
Exceptional opportunities for personal development and growth as we build something remarkable together