Full stack javascript developer Work, Jobs in Chelmsford, Eng (with Salaries)

Full-Stack JavaScript Developer
P & J Moore Limited —Upminster
- £40,000 - £60,000 a year
- Full-time
- SQL
- In-person
- Communication skills
- Free parking
Quick apply
6d
Full Stack Developer
Eccentric IT Solutions Ltd —Colchester
- £40,000 - £55,000 a year
- Full-time
- Hybrid work
- Azure
- Java
- AWS
- Free parking
- Work from home
Quick apply
3d
Full stack developer
Click4Assistance —Basildon
- Scripting
Developer
The Delta Group —Bishop's Stortford
- Remote
- Software troubleshooting
- Travel
Quick apply

Related jobs to explore

Based on your search for full stack javascript developer

Frontend Developer - HTML, CSS, JavaScript, jQuery
Kate Matthews Solutions —London
Ideally, this will take the form of some commercial PHP/Python/Ruby on Rails, however, private or university based experience would also acceptable as long as…
£45,000 - £55,000 a year
Fullstack Developer - Python, Django, HTML, CSS, JavaScript
Kate Matthews Solutions —London
BSC in Computer Science or an equivalent analytical/numerate subject. Having built their technology and platform through contract resource they are now looking…
£65,000 - £75,000 a year

I want to receive the latest job alerts for full stack javascript developer in chelmsford, eng

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

full stack javascript developer jobs near chelmsford, eng

Full Stack Developer jobs in Colchester

Full Stack Developer jobs in Manchester

Full Stack Developer jobs in Canning Town Station

Full Time jobs in Leominster

Full Stack Developer jobs in Berkshire

Full Stack Developer jobs in Birmingham

Python Developer jobs in Manchester

React Js Developer jobs in London

Full Stack Developer jobs in Sheffield

Full Time Visa Sponsorship Nhs jobs in London

Full Time jobs in Rochdale

Full Stack Developer jobs in Glasgow

Full Stack Developer jobs in Cherry Burton

Full Time jobs in Dorset

Reading Full Time Jobs jobs in Reading

Full-Stack JavaScript Developer

P & J Moore Limited
Upminster

Quick apply

Job details

Full-time
£40,000 - £60,000 a year
6 days ago

Benefits

Free parking
Casual dress
On-site parking

Qualifications

React
SQL querying
Microsoft SQL Server
SQL
Express.js
Docker
SCSS
Redis
Back-end development
Front-end development
Web services
Unit testing
Communication skills
NGINX

Full job description

Location

Upminster, Essex, UK

Working pattern

On Site

Salary

£40,000-£60,000, depending on experience

Employment type

Full-time

The opportunity

We're building a multi-brand claims-acquisition platform that guides consumers through the complete online claims journey, from their first visit through identity verification, e-signature and submission.

As a Mid-Level Full-Stack JavaScript Developer, you'll work across the platform: a React single-page application on the front end, Node.js APIs and background workers on the back end, and Microsoft SQL Server as the system of record.

This is a hands-on product engineering role where you'll ship customer-facing journey steps, build and consume REST APIs, write database migrations and integrate third-party services behind clean, maintainable interfaces.

What you'll do

Build and maintain customer-journey screens and shared components in React 19, using React Router 7, Vite and Sass/SCSS across multiple branded sites from a single codebase.
Develop back-end features in Node.js, including a Fastify API, an Express backend-for-frontend and durable background jobs processed through a SQL-backed outbox queue.
Design and evolve the SQL Server schema through forward-only migrations, using parameterised queries and transactional business logic.
Integrate and mock third-party services, including identity-verification and lead-management providers, while keeping transport details behind well-defined interfaces.
Write meaningful tests at every layer: Vitest unit and route tests, Testing Library component tests, and Playwright end-to-end journeys against a real database running in Docker.
Build with the needs of a regulated consumer product in mind, including robust input validation, careful PII handling, audit trails, idempotent retries and graceful degradation.
Work collaboratively to document technical decisions, follow established conventions and improve the platform as it grows.

What you'll bring

At least three years of professional JavaScript development experience, with meaningful hands-on work across both front-end and back-end development.
Strong React fundamentals, including hooks, controlled forms, routing and state management, together with confidence using modern ESM tooling.
Experience building and consuming REST APIs in Node.js using Fastify, Express or a comparable framework.
Practical SQL knowledge covering schema design, joins, transactions and indexes. SQL Server experience is helpful but not essential.
A genuine testing habit: you write useful tests because they prevent defects and support confident delivery, not simply because the CI pipeline requires them.
Clear written communication and the ability to document decisions, explain trade-offs and work within established conventions.

Nice to have

Experience working on multi-tenant or multi-brand products.
Familiarity with queue or outbox patterns, Redis, PM2, nginx or Cloudflare.
Exposure to regulated industries such as claims, finance or insurance, or experience with KYC and identity-verification journeys.

Our technology stack

Pay: £40,000.00-£60,000.00 per year

Benefits:

Casual dress
Free parking
On-site parking

Work Location: In person

Quick apply

Refine Your Search

full stack javascript developer jobs in chelmsford, eng

Full-Stack JavaScript Developer

Full Stack Developer

Full stack developer

Developer

Related jobs to explore

I want to receive the latest job alerts for full stack javascript developer in chelmsford, eng

Explore jobs in more locations

Jobseeker tools

Employer Tools

Browse

Stay Connected