Javascript Developer

Location: Fareham, Onsite or Hybrid (minimum 3 days a week)

Salary: Up to £65,000 + bonus and benefits

We’re working with a high-growth technology business that’s scaling fast and building innovative digital security products used by millions of customers worldwide.

They’re now looking for a Senior Front End Developer to join their front-end team, working on products used by millions of people. This is an exciting opportunity to have real ownership of high-traffic products and work with modern technologies in a business that’s shipping to production daily.

You’ll be joining a collaborative team of front-end engineers, including another Senior Front End Developer who built the frameworks from the ground up, and a Mid-Level Developer. You’ll also work closely with backend and QA teams, reporting to an Engineering Manager who’s grown through the business from a hands‑on developer.

This role is ideal for someone who enjoys mentoring, thrives in a fast‑paced environment, and wants to help shape and scale a front‑end architecture used by millions.

• Designing and building robust, high‑performance applications using React and Type Script.
• Working across technologies including Redux, Webpack, and Jest.
• Driving performance optimisations and improving UI responsiveness at scale.
• Collaborating in a Kanban environment with daily deployments.
• Sharing knowledge, mentoring others, and contributing to front‑end best practices.
• Bringing fresh ideas on how to improve scalability, maintainability and developer experience.

• Solid understanding of Redux, Webpack, and Jest (or similar frameworks).
• Experience delivering front‑end applications at scale.
• Strong communication skills and a collaborative mindset.
• A pragmatic approach to shipping high‑quality code quickly‑ “perfection is the enemy of success.”
• Experience mentoring others or taking a technical lead role is a plus.

You’ll be joining a product‑led company that values creativity, initiative, and craftsmanship. The engineering culture is collaborative and supportive— the leadership team has strong technical roots, and many engineers have progressed internally.

It’s a great fit if you want to work on products used by millions, contribute ideas freely, and be part of a business that deploys daily and is always improving.

• Annual bonus
• 28 days’ holiday (+ length of service accrual & birthday off)
• Gym and golf memberships
• Food allowance and local perks
• Free state‑of‑the‑art onsite gym, bar, barista, barbers and amazing (Interior designed) social spaces
• Team events and personal development support

• Stage 1: Video call / introductory screen
• Stage 2: Live coding exercise
• Stage 3: Face‑to‑face with Engineering Manager, VP and Principal Engineer

This role requires a minimum of 3 days a week in the office in Fareham.

If this sounds like you then please click apply now!