Software engineer (backend) Work, Jobs in London, Eng (with Salaries)

Software Engineer
Squid —London
- £75,000 - £200,000 a year
- Full-time
- AI
Quick apply
Software Engineer
Investa —London
- £60,000 - £85,000 a year
- Full-time
- Hybrid work
- System design
- Annual leave
Quick apply
14d
Software Engineer, Backend
Normal Computing Corporation —London
- £200,000 - £400,000 a year
- Full-time
- Hybrid work
- Software troubleshooting
- APIs
Senior Software Engineer, Backend (Payments)
Affirm —London
- £120,000 - £168,000 a year
- Remote
- Team management
- Communication skills
- Employee stock purchase plan
Frontend Software Engineer
TransitionZero —London
- £62,885 - £77,884 a year
- Software troubleshooting
- Agile
- AI
Quick apply
7d
Backend Engineer
Metamindz —London
- From £70,000 a year
- Full-time
- System design
- Master's degree
- In-person
Quick apply
2d
Backend Software Engineer
Lloyds Banking Group —London
- £76,760 - £115,140 a year
- Full-time
- Hybrid work
- Software troubleshooting
- Mentoring
- Agile
Software Engineer I (New Grad)
Samsara —London
- £67,575 - £79,500 a year
- Overtime
- Hybrid work
- Computer Science
- Bachelor's degree
- In-person
7d
Software Engineer (Backend)
Duffel —London
- Full-time
- APIs
Quick apply
Staff Software Engineer -Backend
Socure —London
- Full-time
- Hybrid work
- Databases
- Mentoring
- Communication skills
1d
Software Engineer – Backend
DDN —London
- Full-time
Quick apply
Software Engineer, Agent Systems
Normal Computing Corporation —London
- £200,000 - £400,000 a year
- Full-time
- Hybrid work
- APIs
- AI
13d
Fullstack Engineer (Backend leaning)
Ben —London
- Full-time
- Hybrid work
Python Software Developer - Backend
Xelix —London
- £60,000 - £80,000 a year
- Full-time
- Hybrid work
- Computer Science
- Annual leave
- Employee discount
Quick apply
Backend Engineer
nPlan —London
- £75,000 - £90,000 a year
- Call to connect
- Hybrid work
- Travel
Backend Developer (Node.js)
RGH‑Global Limited —Canary Wharf
- £60,000 - £65,000 a year
- Databases
- APIs
Software Engineer
Murphy AI —London
- £50,000 - £100,000 a year
- Hybrid work
- AI
- Communication skills
Quick apply
Junior Full Stack Software Engineer
Informed Solutions —London
- Hybrid work
- Communication skills
- Gym membership
- Referral programme
Quick apply
Junior Engineer - .NET Backend (London)
Trainline —London
- Full-time
- Hybrid work
- AWS
Full Stack Engineer (Backend Heavy)
QuantumLoopAI —London
- Full-time
- Remote
- Azure
- Analysis skills
- Mentoring
Quick apply

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software engineer (backend) jobs near london, eng

Software Engineer

Squid
London

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Job details

Full-time
£75,000 - £200,000 a year

Qualifications

Cloud infrastructure
Relational databases
Back-end development
Front-end development
Data visualisation
AI
Software development or architecture experience

Full job description

About Squid (www.squid.energy)

AI and data centres are booming, electrification is accelerating, and trillions in generation, storage, and connection projects are queued - but the real bottleneck is the grid.

Grid planning and operations are becoming a national-scale systems problem: complex network models, messy legacy data, strict governance, overloaded teams, and high-stakes decisions that affect real infrastructure.

Squid is building the agentic modelling platform for power grids: a versioned, auditable source of truth where network models, data, changes, assumptions, and decisions can be tracked - and where humans and AI agents can safely work together.

We unify legacy planning models, operational data, and grid workflows into software that helps teams run checks, compare models, explain changes, validate assumptions, and move faster without losing engineering rigour.

Based in London, Squid is backed by premier investors like Y Combinator and partners with industry leaders including National Grid and Northern Powergrid.

About the role

Pay Range: £75k-£200k (salary + equity), based in London, UK.

We are hiring a Software Engineer to join Squid as one of our first engineers.

You will work closely with the founders and early engineering team to build production software for grid operators. This is a broad software engineering role spanning backend systems, frontend products, data-intensive applications, cloud infrastructure and applied AI.

You will help turn complex engineering workflows into reliable, intuitive software used by planners, operators and engineers. This is a high-ownership role based in our central London office, with the opportunity to shape the product, technical architecture and engineering culture from an early stage.

What you'll do

Build and ship production software across backend services, frontend applications and cloud infrastructure.
Design APIs, data models and product interfaces for complex, data-heavy workflows.
Develop tools for loading, validating, comparing, visualising and explaining technical datasets.
Build reliable systems for versioning, collaboration, approvals and auditability.
Integrate AI models and agents into practical, human-in-the-loop product workflows.
Create benchmarks and evaluation tools for testing AI systems on real customer tasks.
Improve system performance, reliability, security and developer experience.
Work directly with customers to understand problems, test solutions and improve the product.
Use modern AI development tools to prototype, test and ship software quickly.

Qualifications

You do not need to meet every requirement. We are looking for strong, product-minded software engineers who are comfortable working across a broad technical surface area.

You may be a strong fit if you have:

Professional software engineering experience building and maintaining production systems.
Experience with Python, TypeScript, React, Postgres, APIs, cloud infrastructure or data pipelines.
Experience with Columnar storage, Relational DB’s, Object stores.
Experience working across multiple parts of a software stack rather than within one narrow specialism.
Strong product judgement and the ability to turn unclear, real-world problems into practical software.
Experience designing reliable systems for complex or data-intensive workflows.
An interest in applied AI, model evaluation, agent systems and AI-assisted software development.
The ability to communicate clearly and work directly with technical customers.
High ownership, curiosity and a willingness to learn quickly.

Experience with developer tools, data visualisation, geospatial products, collaborative software, workflow engines, technical computing or regulated industries would be valuable, but is not required.

The pay range for this role is:
75,000 - 200,000 GBP per year(London)

Quick apply

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software engineer (backend) jobs in london, eng

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Software Engineer – Backend

Software Engineer, Agent Systems

Fullstack Engineer (Backend leaning)

Python Software Developer - Backend

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Junior Engineer - .NET Backend (London)

Full Stack Engineer (Backend Heavy)

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