senior back end developer Work, Jobs in england (with Salaries)

Senior Software Developer (Back-end)
ONYX Insight —Nottingham
- AWS
- APIs
Quick apply
12d
Back-End Developer (Remote)
Emperor —Birmingham
- Remote
- Azure
- SQL
- JavaScript
Senior Front-End Developer – Equity Derivatives Technology – VP
Citi —London
- Full-time
- Hybrid work
- Bachelor's degree
- JavaScript
- No degree
- Annual leave
- Employee assistance programme
FX Technology – Cross Border Payments, Senior Developer (VP)
Citi —London
- Full-time
- Hybrid work
- Annual leave
- Employee assistance programme
Senior Frontend Developer – E-Commerce (Shopify)
Durlston Partners —London
- £100,000 a year
- Hybrid work
- AWS
- JavaScript
- APIs
Senior Front-End Developer (Nuxt / Vue)
Shortlister —York
- £60,000 - £80,000 a year
- Full-time
- Remote
- JavaScript
- Mentoring
- APIs
Quick apply
Senior PHP Web Developer - Back End
Venditan —Manchester
- Full-time
- AWS
- JavaScript
- Software development
Senior Developer
NEXT —Leicester
- £51,400 - £59,400 a year
- Full-time
- Azure
- Analysis skills
- JavaScript
- Free parking
- Employee discount
6d
Senior Developer (Integrations)
University of Bath —Bath
- £42,784 - £50,049 a year
- Full-time
- Oracle
- SQL
- University
- Annual leave
- Employee discount
5d
Senior Software Developer
Apollo Scientific —Denton
- £50,000 - £60,000 a year
- Full-time
- Azure
- Computer Science
- English
- Free parking
- Flexitime
Quick apply
5d
Senior Front-End Developer
DigiTickets —Exeter
- £48,000 - £56,000 a year
- Full-time
- Hybrid work
- JavaScript
- HTML
- Annual leave
Quick apply
19h
Senior Developer (£44,241 - £58,997)
Driver and Vehicle Standards Agency —Birmingham
- £44,241 - £58,997 a year
- Part-time
- Hybrid work
- Presentation skills
- Continuous improvement
- JavaScript
- Annual leave
- Employee assistance programme
6d
Head of Product Design
n8n —London
- £190,000 a year
- Full-time
- Remote
- English
- Life insurance
8d
Senior Business Analyst
NHSProfessionals —Hemel Hempstead
- £55,000 a year
- Azure
- Data analysis skills
- Analysis skills
- Annual leave
- Employee assistance programme
Quick apply
Senior Technical Consultant
Clio —Manchester
- £81,600 - £110,400 a year
- Full-time
- Azure
- SQL
- JavaScript
- Life insurance
Architect
Insurity —London
- £73,000 - £116,000 a year
- Bachelor's degree
- No degree
- Travel
- Referral programme
Quick apply
Front End Developer
Solirius Reply —London
- £40,000 - £65,000 a year
- Full-time
- Hybrid work
- Azure
- AWS
- Analysis skills
- Annual leave
- Employee assistance programme
Quick apply
Senior System Developer - 1 Year Fixed Term Contract
Basingstoke and Deane Borough Council —Basingstoke
- £46,796 - £50,456 a year
- Full-time
- Hybrid work
- Azure
- APIs
- Leadership
- Annual leave
- Employee assistance programme
6d
Senior/Lead Full stack Developer (Angular & .NET)
EPAM Systems, Inc. —London
- Hybrid work
- SQL
- AWS
- JavaScript
- Employee stock purchase plan
- Employee assistance programme
Senior Software Engineer, Banking Connectivity
Ripple —London
- Full-time
- Java
- AWS
- APIs

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senior back end developer jobs near england

Senior Software Developer (Back-end)

ONYX Insight
Nottingham

Quick apply

Job details

Fixed term contract
12 days ago

Qualifications

React
C#
.NET
AWS
PostgreSQL
Distributed systems
APIs
TypeScript

Full job description

The Role

Are you a senior backend engineer who thrives on distributed systems, clean architecture, and complex data problems? At ONYX Insight, we're looking for a Senior Software Developer (Contractor) to make an immediate impact on our core platform, a sophisticated distributed system processing data from wind turbines around the world.

This is not a typical SaaS CRUD role. You'll work across a distributed architecture including asynchronous messaging, worker processes, and data ingestion pipelines.

Frontend exposure is a bonus, not a requirement.

Key Responsibilities:

Backend Delivery: Implement robust, well-tested C# .NET services following clean architecture principles — domain logic, data access, messaging, and background processing.

Distributed Systems: Contribute to service boundary design, asynchronous messaging flows, and worker processes within our modular monolith, with an eye on future decomposition.

Data Pipelines: Build and maintain backend ingestion flows that sanitise, standardise, and process high-volume sensor data reliably and at scale.

Code Quality: Write clean, well-tested code with strong unit and integration coverage. You care about correctness, not just delivery.

Collaboration & Deployment: Support frontend engineers with clean API contracts, and contribute to our CI/CD pipeline and artifact-based deployment process.

Ideally, you'll have/be:

Deep, commercial C# .NET experience (5+ years) — comfortable with clean architecture, SOLID principles, and building maintainable systems at scale.

Solid experience with distributed systems and async patterns — service buses, message queues, background workers, and event-driven architecture. You understand the tradeoffs, not just the tooling.

Experience building data ingestion or processing pipelines — handling high-volume, real-world data with a focus on reliability and fault tolerance.

Strong PostgreSQL skills — schema design, migrations, and efficient queries against complex data models.

A genuine testing culture — unit and integration tests written as standard, with an understanding of what makes a test suite valuable.

Familiarity with AWS and how backend services are deployed and monitored in production.

Experience with modular or service-oriented architectures — you appreciate well-defined boundaries and can work pragmatically within a monorepo.

A contractor mindset: self-directed, fast to ramp up, and able to deliver independently — while communicating clearly when things need to be challenged.

Some React or TypeScript exposure is useful, but frontend delivery is not an expectation of this role.

About ONYX

ONYX Insight is a growing technology and engineering organisation in the renewable energy sector. Our vision is to build a more efficient future by becoming the world's most innovative provider of predictive technology solutions. Our advanced sensing, software and analytics combined with our engineering experience are deployed on wind turbines around the world to maximise production and make turbines more reliable for longer, optimising energy production.

ONYX Insight is part of the Macquarie Group. Macquarie is a global financial services group operating in 34 markets in asset management, leasing and asset financing, market access, commodity trading, renewables development, specialist advisory services, capital raising and principal investment. The diversity of the Macquarie Group operations combined with a strong capital position and robust risk management framework has contributed to a 54 year-record of unbroken profitability.

For any further information, or to understand our products and services better, please feel free to look through our website:

ONYX">https://onyxinsight.com/ ... (https://onyxinsight.com/

ONYX) Insight are an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

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Refine Your Search

senior back end developer jobs in england

Senior Software Developer (Back-end)

Back-End Developer (Remote)

Senior Front-End Developer – Equity Derivatives Technology – VP

FX Technology – Cross Border Payments, Senior Developer (VP)

Senior Frontend Developer – E-Commerce (Shopify)

Senior Front-End Developer (Nuxt / Vue)

Senior PHP Web Developer - Back End

Senior Developer

Senior Developer (Integrations)

Senior Software Developer

Senior Front-End Developer

Senior Developer (£44,241 - £58,997)

Head of Product Design

Senior Business Analyst

Senior Technical Consultant

Architect

Front End Developer

Senior System Developer - 1 Year Fixed Term Contract

Senior/Lead Full stack Developer (Angular & .NET)

Senior Software Engineer, Banking Connectivity

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