The Senior Front-End Engineer will design and deliver scalable applications, mentor junior engineers, and collaborate with cross-functional teams to enhance a SaaS product.
ParcelHero is one of the UK’s biggest parcel delivery price comparison sites. With over 5 million visitors a year, and over 100 remote employees worldwide, we’re a technology-driven company that’s going places, delivering innovative solutions to ensure exceptional customer care. As a forward-thinking and dynamic business, we offer excellent career growth opportunities.
In 2025, we will be rolling out worldwide our new TMS (Transport management solution) Parcelhero Pro, which enables retailers to pay a monthly subscription to centralise all orders and ship on their own carrier accounts using our cutting-edge shipping platform.
At ParcelHero, we foster a collaborative and innovative culture where every team member's voice matters. We're a fast-paced, remote-first company that values initiative, adaptability, and a strong sense of ownership. If you're someone who thrives in a dynamic, ambitious, and forward-thinking team, you’ll fit right in with us.
Our engineering team is tackling exciting challenges such as designing scalable front-end architectures, building reusable component libraries, implementing advanced state management, and optimising performance for millions of users.
Our remote-first culture is collaborative and innovative, where every voice is heard, and we encourage initiative, adaptability, and ownership. If you're a dynamic and ambitious individual looking for a forward-thinking team, ParcelHero is the right fit for you.
Our Core Values:
We believe in clean code, peer reviews, and continuous learning. Engineers are encouraged to propose new technologies, contribute to open source, and influence technical direction.
Overall Purpose of Role
We are looking for a Senior Front-End Engineer specialising in React with 5+ years of professional experience. You will take ownership of designing and delivering scalable, maintainable, and performant front-end applications. Beyond coding, you’ll set best practices, mentor junior engineers, and work closely with design, product, and back-end teams to deliver seamless experiences
Why join?
- Direct impact: you’ll play a key role in evolving the front end of an established SaaS product used by real customers.
- Autonomy: influence architectural decisions and tooling choices.
- Growth: opportunities to progress as the team scales.
Skills and Competencies - Must haves
- Expert in JavaScript (ES6+) and TypeScript.
- Deep expertise with React (hooks, context, state management, component architecture, performance optimisation).
- Strong knowledge of CSS and responsive design principles.
- Proficient in accessibility (WCAG standards) and cross-browser compatibility.
- Testing experience: unit, integration, and end-to-end.
Optional positives
- Experience with Mantine UI library.
- Experience with Zustand for state management.
- Familiarity with React Query and Axios.
Qualifications and Experience
- 8+ years of professional front-end development experience, with at least 5 years focused on React in large-scale applications.
- Track record of building and deploying production-grade React applications.
- Experience mentoring developers and contributing to engineering culture.
- Excellent communication and collaboration skills in cross-functional teams.
- Bachelor’s degree in Computer Science, Engineering, or related field preferred (or equivalent practical experience).
9am to 5:30pm Mon-Fri (GMT).
15 days holiday per year.
You work as a contractor and are responsible for your own tax.
You need a min 20 MB broadband line, and your own PC/Laptop and headset.
Top Skills
Axios
CSS
JavaScript
Mantine Ui
React
React Query
Typescript
Zustand
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