Back end developers Work, Jobs in Boyce, Ess (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
4d
Web Developer
Desi Tailors Limited —Barking
- £34,000 - £44,000 a year
- Full-time
- CRM software
- Computer Science
- Software troubleshooting
- Relocation assistance
- Flexitime
Quick apply
21h
AI Automation Developer
SS&C Technologies —Basildon
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Master's degree
Software Engineer
Investa —London
- £60,000 - £85,000 a year
- Full-time
- Hybrid work
- System design
- Annual leave
Quick apply
13d
Developer
Watchfinder —West Malling
- Full-time
- AWS
- Employee discount
Senior Frontend Engineer (Web & App)
Quantum —Maidstone
- Full-time
- Hybrid work
- Communication skills
9d
Go Developer
Onwave UK Ltd —West Malling
- From £50,000 a year
- Full-time
- Hybrid work
- Azure
- Communication skills
- Free parking
- Employee discount
Quick apply
7d
ICT Lead PHP Developer (Jadu Platform & Digital Services)
Medway Council —Chatham
- £45,795 a year
- Mentoring
5d
AI Engineer
IFS —London
- Full-time
- Hybrid work
- Machine learning
- AI
Quick apply
Securities Finance Developer (Vice President)
Jefferies & Company, Inc. —London
- Full-time
- SQL
- AWS
- Software development
Senior Developer - Risk Technology - C# .NET, Python, Snowflake SQL (Vice President)
Jefferies & Company, Inc. —London
- Full-time
- Computer Science
- Engineering
- AWS
iOS Engineer - Swift - London
Photon —London
- Hybrid work
- Software troubleshooting
- Continuous improvement
- APIs
Mid-Level Backend Engineer (Driver Squad)
HIVED —London
- Full-time
- Hybrid work
- Computer Science
- Master's degree
- AWS
Experienced .NET Engineer
Influential Software —Maidstone
- Full-time
- Azure
- Team management
- Conflict management
- Annual leave
- Employee discount
Quick apply
Lead / Senior Software Engineer || Enterprise Asset Management AI & Agentic Systems
IFS —London
- Full-time
- Computer Science
- Engineering
- Analysis skills
Quick apply
Equity Derivatives Development Lead (Senior Vice President)
Jefferies & Company, Inc. —London
- Full-time
- Java
- Bachelor's degree
- Software development
Lead Backend Engineer (Routing Squad)
HIVED —London
- Full-time
- Hybrid work
- Analysis skills
- Leadership
Senior Principal Platform Lead || AI & Agentic Systems
IFS —London
- Full-time
- Hybrid work
- Mentoring
- AI
Quick apply
14d
Senior .NET Developer (Desktop/SDK)
Proton —London
- Master's degree
- Bachelor's degree
Quick apply
8d

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Full-Stack JavaScript Developer

P & J Moore Limited
Upminster

Quick apply

Job details

Full-time
£40,000 - £60,000 a year
4 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

back end developers jobs in boyce, ess

Full-Stack JavaScript Developer

Web Developer

AI Automation Developer

Software Engineer

Developer

Senior Frontend Engineer (Web & App)

Go Developer

ICT Lead PHP Developer (Jadu Platform & Digital Services)

AI Engineer

Securities Finance Developer (Vice President)

Senior Developer - Risk Technology - C# .NET, Python, Snowflake SQL (Vice President)

iOS Engineer - Swift - London

Mid-Level Backend Engineer (Driver Squad)

Experienced .NET Engineer

Lead / Senior Software Engineer || Enterprise Asset Management AI & Agentic Systems

Equity Derivatives Development Lead (Senior Vice President)

Lead Backend Engineer (Routing Squad)

Senior Principal Platform Lead || AI & Agentic Systems

Senior .NET Developer (Desktop/SDK)

Other jobs to consider

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