Back end developer Work, Jobs in Heathrow (with Salaries)

Backend Developer
National Gas —East London
- £40,000 a year
- Full-time
- Azure
- In-person
Quick apply
9h
Frontend Developer (React) Junior/Mid
Careerswift —London
- Full-time
- Remote
- JavaScript
- APIs
Junior Front End Developer
Byte9 —London
Web Designer/Front end developer
Amplefuture —London
- Software troubleshooting
- HTML
Full Stack Developer
StoryTerrace —London
- £4,000 a month
- Remote
- AI
Quick apply
8d
Software Engineer
Longshot Systems Ltd —London
- Full-time
- Hybrid work
- English
- Java
- Master's degree
- Gym membership
Quick apply
Python Developer
Durlston Partners —London
- £150,000 - £175,000 a year
- Remote
- C++
- Python
Full-Stack Developer
Applied Data Science Partners —London
- Hybrid work
- Analysis skills
- Organisational skills
- Agile
- Annual leave
12d
Junior Software engineer
vServices —London
- Computer Science
- SQL
- C++
Software Engineer, Frontend (TypeScript)
Motorola Solutions —Uxbridge
- Full-time
- Travel
- AI
- Employee stock purchase plan
- Employee assistance programme
4d
Solar Web UI Developer
Standard Chartered —London
- English
- Communication skills
- Annual leave
- Employee assistance programme
1d
Developer - Dynamics 365 CE
Safetykleen —Brentford
- £70,000 - £75,000 a year
- Full-time
- Azure
- AI
- Employee assistance programme
- Referral programme
Quick apply
Software Engineer - Customer Capabilities
Compare the Market —London
- APIs
Quick apply
S/4HANA ABAP Developer (Back-end)
Capgemini —London
- Software troubleshooting
- Continuous improvement
1d
Full Stack PHP Developer
Gemex —London
- £30,000 - £40,000 a year
- 8 hour shift
- Hybrid work
- JavaScript
- APIs
Quick apply
5d
S/4HANA ABAP Developer (Back-end)
Capgemini Sogeti —London
- Software troubleshooting
- Continuous improvement
1d
Junior Web Developer (C# / Blazor)
Simpson Spence Young —London
- Microsoft Excel
- Azure
- Java
Full Stack Developer
LEWIS —London
- JavaScript
- HTML
Full-Stack Engineer (Front-End Leaning)
ElevenLabs —London
- Full-time
- Remote
- System design
- APIs
Front End Software Engineer
Leidos —Farnborough
- £61,500 - £78,800 a year
- Full-time
- Java
- Software development
- APIs
- Annual leave
- Work from home

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Backend Developer

National Gas
East London

Quick apply

Job details

Permanent | Full-time
£40,000 a year
9 hours 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

back end developer jobs in heathrow

Backend Developer

Frontend Developer (React) Junior/Mid

Junior Front End Developer

Web Designer/Front end developer

Full Stack Developer

Software Engineer

Python Developer

Full-Stack Developer

Junior Software engineer

Software Engineer, Frontend (TypeScript)

Solar Web UI Developer

Developer - Dynamics 365 CE

Software Engineer - Customer Capabilities

S/4HANA ABAP Developer (Back-end)

Full Stack PHP Developer

S/4HANA ABAP Developer (Back-end)

Junior Web Developer (C# / Blazor)

Full Stack Developer

Full-Stack Engineer (Front-End Leaning)

Front End Software Engineer

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