Developer Work, Jobs in Harlow, Eng (with Salaries)

Backend Developer
National Gas —East London
- £40,000 a year
- Full-time
- Azure
- In-person
Quick apply
1d
Software Engineer
WeRevamp Store Ltd —London
- £55,000 - £60,000 a year
- Full-time
- Hybrid work
- Computer Science
- Analysis skills
- Machine learning
Quick apply
Assistant Developer (maternity cover)
Westminster School —London
- £43,287.43 a year
- Full-time
- Software development
- School
Quick apply
6h
Full-Stack Developer
Applied Data Science Partners —London
- Hybrid work
- Analysis skills
- Organisational skills
- Agile
- Annual leave
13d
Full-Stack Developer (Remote)
Softblues —London
- Remote
- English
- SQL
- AWS
- Annual leave
- Flexible schedule
Software Engineer IV
Indeed —London
- £98,000 - £148,000 a year
- Full-time
- Doctoral degree
- Computer Science
- Engineering
- Annual leave
- Life insurance
Quick apply
Full Stack Developer
StoryTerrace —London
- £4,000 a month
- Remote
- AI
Quick apply
9d
Member of Technical Staff
OpenClaw Foundation —London
- £200,000 - £300,090 a year
- Full-time
- Machine learning
- Software development
- APIs
Quick apply
Associate Software Engineer
Mimecast —London
- £40,000 - £57,000 a year
- Full-time
- Hybrid work
- Java
- Agile
- AI
8d
Full Stack Developer
LEWIS —London
- JavaScript
- HTML
Data Developer
News Corp —London
- AI
- Employee assistance programme
- Employee discount
1h
Associate Product Manager
Trainline —London
- £55,000 - £65,000 a year
- Full-time
- Hybrid work
- Agile
- Communication skills
9d
Web Developers (Remote Position)
WizzHosting —London
- Monday to Friday
- Remote
Frontend Developer (React) Junior/Mid
Careerswift —London
- Full-time
- Remote
- JavaScript
- APIs
Graduate Quantitative Programmer
Peloton Social Ventures Limited —London
- £2,200 a month
- Full-time
- English
- Maths
- In-person
Quick apply
9d
Software Engineer - Customer Capabilities
Compare the Market —London
- APIs
Quick apply
Junior Business Developer
GrantTree —London
- £30,000 - £35,000 a year
- Hybrid work
- CRM software
- Business development
- Communication skills
- Employee assistance programme
- Referral programme
14d
Quantitative Developer
Janus Henderson —London
- Hybrid work
- Mentoring
- AI
- SDLC
SAP Developer (Digital Technology)
Raytheon —Harlow
- Full-time
- Hybrid work
- Writing skills
- Travel
- Communication skills
Developer
The Delta Group —Bishop's Stortford
- Remote
- Software troubleshooting
- Travel
Quick apply

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Backend Developer

National Gas
East London

Quick apply

Job details

Permanent | Full-time
£40,000 a year
1 day ago

Benefits

Company pension

Qualifications

Authentication
Website maintenance
Performance tuning
ASP.NET
Website management
Azure
ASP.NET Core
IIS
Microsoft SQL Server
Software development operations experience
Docker
CI/CD pipelines
Cloud development
Continuous integration
Back-end development
REST
GitHub
Microsoft Azure
Entity Framework

Full job description

We are looking for a Backend Developer to take ownership of the backend architecture, APIs, and core services that power both our existing web platforms and a new, modern, real-time operational system.

This is a hands-on role focused on developing scalable backend solutions, maintaining and enhancing our existing ASP.NET applications, and building cloud-based services using ASP.NET Core and Microsoft Azure. You will work closely with our developers to deliver modern, API-driven applications while helping to modernise our technology stack and improve the performance, security, and reliability of our systems.

You can find out more about us here: https://nationalgas.org.uk/

WHAT YOU’LL DO

Maintain, enhance, and support existing ASP.NET-based websites hosted on IIS
Build and extend backend services and REST APIs using ASP.NET Core / .NET
Implement real-time features using SignalR.
Support and integrate WebRTC audio-only calling functionality.
Design, optimise, and maintain SQL Server and MariaDB databases.
Build features involving mapping, GPS, geolocation, and geofencing.
Collaborate with product, engineering, and DevOps teams on system architecture.
Write clean, testable, and maintainable code across the full stack.
Contribute to performance, scalability, and security improvements.
Participate in code reviews, technical planning, and system design discussions

REQUIRED SKILLS AND EXPERTISE

Strong experience with ASP.NET Core / .NET
Experience maintaining or building ASP.NET websites
Strong background building RESTful APIs
Solid knowledge of SQL Server or MariaDB
Experience with Entity Framework Core and/or Dapper
Understanding of async programming, concurrency, and performance
Experience implementing authentication and authorisation (JWT, OAuth2)

DevOps & Cloud

Experience with CI/CD pipelines (Azure DevOps, GitHub Actions)
Comfortable using Docker for development and deployment
Exposure to Microsoft Azure (App Services, SignalR Service, Storage)
Familiarity with logging and monitoring tools (Application Insights, Serilog)
Comfortable working with IIS and Windows-based hosting environments

WHAT WE OFFER

Ownership of both existing platforms and new system builds
Opportunity to modernise and shape our long-term tech stack
Engineering-led environment with real technical ownership
Clear career progression and skills development

Pay: £40,000.00 per year

Benefits:

Company pension

Work Location: In person

Quick apply

Refine Your Search

developer jobs in harlow, eng

Backend Developer

Software Engineer

Assistant Developer (maternity cover)

Full-Stack Developer

Full-Stack Developer (Remote)

Software Engineer IV

Full Stack Developer

Member of Technical Staff

Associate Software Engineer

Full Stack Developer

Data Developer

Associate Product Manager

Web Developers (Remote Position)

Frontend Developer (React) Junior/Mid

Graduate Quantitative Programmer

Software Engineer - Customer Capabilities

Junior Business Developer

Quantitative Developer

SAP Developer (Digital Technology)

Developer

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