Frontend developer (senior) m/w/d Work, Jobs (with Salaries)

Senior Frontend Engineer
Levels Technologies —London
- £85,000 - £95,000 a year
- Full-time
- JavaScript
Quick apply
Senior Frontend Engineer
Simple Machines —London
- Full-time
- Hybrid work
- Machine learning
- Software development
- Agile
Quick apply
Senior Frontend Developer
Kolleno —London
- Full-time
- Remote
- JavaScript
- APIs
- HTML
Senior Frontend Developer
TradingView —London
- Hybrid work
- JavaScript
- APIs
- Flexible schedule
Senior Web Designer & Developer
Reason8 Marketing Ltd. —Hinckley
- £38,000 - £50,000 a year
- Full-time
- In-person
Quick apply
Senior Front End Engineer
1st Formations —London
- £90,000 - £110,000 a year
- Full-time
- Hybrid work
- JavaScript
- HTML
Senior Frontend Engineer
Housekeep —London
- AWS
- JavaScript
- APIs
- Employee discount
- Gym membership
Senior Frontend Engineer
TransPerfect —London
- Full-time
- Hybrid work
- Bachelor's degree
- JavaScript
- Software development
Quick apply
Senior Frontend Engineer
Halos Body Cams —Belfast
- £70,000 - £80,000 a year
- Full-time
- Hybrid work
- AWS
- JavaScript
- APIs
- Annual leave
Quick apply
Senior Frontend Engineer
Benifex —Southampton
- £70,000 - £90,000 a year
- Remote
- APIs
- Agile
- Communication skills
- Employee assistance programme
- Employee discount
Developer / Senior Developer
NEXT —Leicester
- £40,800 - £53,800 a year
- Full-time
- Azure
- Analysis skills
- JavaScript
- Free parking
- Employee discount
Software Engineer (React)
CGI —Glasgow
- Full-time
- Hybrid work
- Continuous improvement
- JavaScript
- Travel
Quick apply
Senior Frontend Developer
Global Relay —London
- Hybrid work
- JavaScript
- APIs
- Agile
Digital Innovation Assistant
Aspen Pumps —Remote
- From £35,000 a year
- Full-time
- Remote
- JavaScript
- APIs
- HTML
Quick apply
6d
Senior Frontend Engineer, Growth
Incard —London
- Full-time
- JavaScript
- APIs
- Annual leave
- Sick pay
Quick apply
Senior WooCommerce Developer / E-commerce UX & UI Lead
Photonic Universe —Orpington
- Up to £75,000 a year
- Part-time
- ERP systems
- Business development
- JavaScript
Quick apply
13d
Senior Frontend Engineer (UK)
Pigment —London
- Full-time
- English
- APIs
- Leadership
Sr. Front-end Engineer
Galytix —London
- English
- JavaScript
- APIs
Senior Developer - Drupal
Box UK Limited —Cardiff
- Up to £55,000 a year
- Full-time
- Hybrid work
- JavaScript
- Mentoring
- Software development
- Employee discount
- Life insurance
Quick apply
8d
Lead Frontend Engineer
Ember —Edinburgh
- £70,000 - £110,000 a year
- Full-time
- AWS
- Bachelor's degree
- Python
- Flexible schedule
Quick apply
2d

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Senior Frontend Engineer

Levels Technologies
London

Quick apply

Job details

Full-time
£85,000 - £95,000 a year

Qualifications

MCP
Test-driven development
JavaScript
UX
Figma
TypeScript

Full job description

Role summary: A product-minded senior frontend engineer who thrives in fast-growth environments, owns features (and their quality) end-to-end, and uses agentic development workflows to ship faster. Works closely with product and design, not just executing tickets.

Responsibilities: Work closely with the Product team to build out core applications for both internal and external users.

Evaluation criteria (in priority order):

1. Fast-growth / high-performance startup or scaleup experience (highest weight)

Has worked at a Series A/B (or comparable) startup through a period of rapid scaling, ideally not just a large, stable org.
Comfortable with ambiguity, shifting priorities, and shipping under pressure without over-engineering.
Signals: early/founding engineer roles, "first N engineers," ownership of significant surface area, demonstrable velocity. Be wary of CVs showing only big-company or agency/consultancy backgrounds.

2. Strong agentic workflows / development optimisation

Actively uses AI coding agents (Claude Code, Cursor, etc.) as a core part of how they work, not as an occasional aid.
Thinks about optimising their own and the team's development workflow - tooling, automation, spec-driven development.
Signals: mentions of agentic/AI-native development, internal tooling, DX improvements, side projects built with agents, relevant OSS contributions (MCP, agent frameworks). Recency matters - this should be current, not aspirational.

3. Strong product engagement / design collaboration

Engages with the "why," contributes to product decisions, and pushes back constructively rather than waiting for fully-specced tickets.
Collaborates directly with designers; comfortable with Figma handoff and translating design intent into polished UI.
Signals: product-led teams, mentions of shaping features, user-facing ownership, design-system or UX-quality work.

4. React experience

Solid, current production React. Adjacent modern stack (TypeScript, Next.js) is a plus.
Note: lowest-weighted of the ranked criteria - a strong agentic, product-minded scaleup engineer with a slightly different framework background may still be worth considering.

Ownership of quality (baseline expectation):

Used to owning their own testing and quality - writes and maintains their own tests, doesn't rely on a separate QA function to catch issues.
Signals: TDD/testing discipline, mentions of test coverage ownership, "you build it, you run it" cultures.

Disqualifiers / flags:

Cannot commute to London.
Purely backend or infrastructure focus with no frontend ownership.
No evidence of any of the top three criteria.

Levels is an equal opportunity employer. We welcome applications from all qualified candidates regardless of background, and we're committed to building a diverse and inclusive team.

Compensation Range: £85K - £95K

Quick apply

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