Frontend Engineer

Hybrid in London·Added yesterday (last checked 28 Oct)

Agency

Harnham

176 open roles

Apply

Our summary

Salary: £70,000 - £80,000 a year
About £4,260 - £4,750 a month after tax.
Work mode: Hybrid, London
Contract: Permanent

Skills

Nice to have

Requirements

What we're looking for

You will have:

Strong commercial experience building applications with React and TypeScript.
Experience developing complex enterprise software, SaaS platforms, or data-rich products.
Expertise in state management, front-end architecture, testing, and performance optimisation.
Understanding of front-end security principles and best practices.
Experience working within cloud-based development environments and modern CI/CD processes.
Regular use of AI-assisted development tools such as Cursor, Claude Code, or similar.
A product-focused mindset with a passion for delivering high-quality user experiences.

Nice to have

React Native development.
AI-powered or agentic product development.
Design systems, theming frameworks, or micro-frontend architectures.
Financial or data visualisation products.

Pay & benefits

What you'll get

London (Hybrid, minimum 3 days in office) | £70,000-£80,000 + Bonus + Benefits

The role

You will:

Build and enhance complex front-end applications using React and TypeScript.
Develop data-heavy dashboards, analytics tools, and workflow-driven user experiences.
Design intuitive interfaces for AI-powered features and agent-based workflows.
Create responsive, performant, and accessible user experiences for enterprise users.
Contribute to shared component libraries and scalable front-end architecture.
Collaborate closely with product, design, and engineering stakeholders.
Implement robust testing practices and maintain high standards of code quality.
Optimise application performance, scalability, and front-end security.

What you'll do

This is an opportunity to join a well-funded AI software business at a pivotal stage of growth. You'll help shape the front-end experience of a sophisticated platform used to manage complex workflows, data-rich processes, and AI-powered decision making. Working within a small, high-calibre engineering team, you'll have significant ownership, direct exposure to leadership, and the chance to influence both product and technical direction.

What They Offer

Competitive salary, bonus, and benefits package.
The opportunity to help build a cutting-edge AI platform from an early stage.
High levels of autonomy, ownership, and technical influence.
Direct access to senior leadership and decision-makers.
Clear opportunities for career development as the engineering function grows.
Modern London office environment with a collaborative engineering culture.

About Harnham

Industry: Staffing and Recruiting

In their own words

About the company & team

They are building an AI-powered enterprise platform that helps organisations work more efficiently with complex data, workflows, and decision-making processes. Their technology combines proprietary information, external data sources, and AI capabilities into a secure, scalable product used in highly demanding environments.
Backed by an established international business with deep domain expertise, they are investing heavily in product and engineering growth. The team operates in a collaborative, high-ownership environment where engineers play a key role in shaping the product's future.

All open roles at Harnham