Front-End JavaScript Engineer

Hitchin, Hertfordshire | Hybrid (2–3 Days Onsite) | £60,000–£70,000

We’re working with a high-growth construction technology company that builds innovative software and hardware solutions used across major infrastructure and road construction projects.

With international expansion underway and continued investment into the business, they’re looking to strengthen their in-house engineering team with an experienced Front-End JavaScript Engineer.

This is an opportunity to work on real-world technology that improves construction quality, site safety, efficiency, and automation across the infrastructure sector.

The Role

Joining a close-knit R&D team of around five developers, you’ll focus on building modern web and mobile applications that integrate with hardware systems used on live construction sites.

You’ll work across a varied technical environment, contributing to product design, front-end development, and software that operates within Raspberry Pi and connected device environments.

Key Responsibilities

• Building front-end applications using React.js and modern JavaScript
• Developing software for web, mobile, and hardware-integrated systems
• Working with Node.js, Electron.js, REST APIs, and data synchronisation
• Collaborating closely with the wider R&D team in an agile environment
• Contributing to performance optimisation, testing, and product improvements

Tech Stack

• JavaScript
• React.js
• Node.js
• Electron.js
• HTML & CSS
• REST APIs & OAuth
• PostgreSQL
• AWS
• Linux / Git

What They’re Looking For

• 5+ years of commercial JavaScript development experience
• Strong front-end development background across web and mobile
• Experience working within agile software teams
• Comfortable working in smaller, fast-moving environments
• Strong communication skills and ability to work autonomously

Desirable Experience

• GIS or mapping platforms
• Mobile app development
• IoT or hardware/software integrated products
• Start-up or scale-up environments

Why Join?

• Fast-growing technology business with international expansion plans
• Opportunity to work on products with real-world impact
• Broad technical exposure across software, hardware, and automation
• Flexible hybrid working environment
• Strong progression opportunities as the business scales
• Training and professional development support

Package

• £60,000–£70,000 salary
• 25 days holiday + bank holidays
• Share option scheme after 12 months
• Flexible working hours
• Hybrid working (2–3 days onsite in Hitchin)
• Equipment and training provided

Interview Process

Two-stage informal process including an introductory Teams call followed by an onsite technical and culture discussion with the leadership team. No formal testing involved.