Senior software developer (python) Work, Jobs in London, Eng (with Salaries)

Mid-Level Python Developer (Outside IR35)
Mossend Software —London
- From £350 a day
- Hybrid work
- Azure
- Software troubleshooting
- SQL
Quick apply
12d
Quantitative Software Developer
CompatibL —London
- Full-time
- C++
- Presentation skills
- Software development
- Flexible schedule
Full Stack Developer
Consilience Group —London
- £55,000 - £85,000 a year
- Computer Science
- AWS
Staff/Lead Python Engineer (FastAPI, Orchestration)
Mimica —London
- Full-time
- Remote
- English
- Machine learning
- Mentoring
- Annual leave
- Flexible schedule
Staff / Senior Software DevOps Engineer
OLIX —London
- Full-time
- Computer Science
- DevOps
- Bachelor's degree
Senior Backend Software Engineer - Application Development
Palantir Technologies —London
- Full-time
- Java
- In-person
- Communication skills
- Work from home
Dev Ops - Java/Python - London
Photon —London
- Full-time
- Computer Science
- Java
- Analysis skills
Senior Quant Developer
T. Rowe Price —London
- Full-time
- Hybrid work
- Computer Science
- Databases
- Analysis skills
Senior Python Developer
NCC Group —London
- Full-time
- Hybrid work
- Computer Science
- Software troubleshooting
- Engineering
- Annual leave
Quick apply
Senior+ Software Engineer
Syntasso —London
- £80,000 - £120,000 a year
- Hybrid work
- Software development
Quick apply
Senior Software Engineer, Chem-Bio
AI Security Institute —London
- £61,620 - £74,605 a year
- Hybrid work
- Master's degree
- Presentation skills
- Machine learning
- Annual leave
AI Automation Developer
SS&C Technologies —Basildon
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Master's degree
Senior Software Engineer
Mako —London
- Hybrid work
- C++
- Mentoring
- Python
Quick apply
Senior Full-Stack Developer
Applied Data Science Partners —London
- Hybrid work
- Analysis skills
- Presentation skills
- Mentoring
- Annual leave
Senior Software Engineer (Backend)
Canonical —London
- Remote
- Computer Science
- Bachelor's degree
- Mentoring
Quick apply
Senior Python Developer
TreasurySpring —London
- Full-time
- Hybrid work
- Bachelor's degree
- No degree
- Mentoring
- Annual leave
- Employee assistance programme
Quick apply
Senior Software Engineer - Advisory Suite
Alpaca —London
- Remote
- Databases
Quick apply
Senior ML Software Developer (Brahma AI - A DNEG Dedicated Unit of Brahma)
DNEG —London
- Software troubleshooting
- Machine learning
- Linux
Python Counterparty Credit Risk Senior Developer, Vice President
Citi —London
- Full-time
- English
- C++
- Mentoring
- Annual leave
- Employee assistance programme
Senior Developer
Menzies LLP —Woking
- Full-time
- Hybrid work
- No degree
- Travel
- Software development

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senior software developer (python) jobs near london, eng

Mid-Level Python Developer (Outside IR35)

Mossend Software
London

Quick apply

Job details

Fixed term contract
From £350 a day
12 days ago

Qualifications

CI/CD
Technical troubleshooting
Cloud infrastructure
Azure
Software troubleshooting
Test automation
Microsoft SQL Server
SQL
CI/CD pipelines
Terraform
Back-end development
REST
APIs
Financial services
Root cause analysis
Flask
Microsoft Azure
Python
Infrastructure provisioning automation
Terraform provisioning
Debugging

Full job description

Python Developer (Azure / FastAPI) — £350/day — Outside IR35 — Hybrid, Central London (3 days on-site)

About the role

A significant opportunity to work with a leading global independent financial services firm, delivering a loan management platform that handles complex servicing workflows in a regulated environment. You'll be working to a high bar for correctness, traceability and testing — and you'll be based out of excellent offices in central London three days a week.

We are looking for a mid-level Python developer to join the delivery team. This is a hands-on engineering role in a small, senior team — you'll own features end to end and you'll have direct visibility of the client and the business problems you're solving.

What you'll be doing

Building and maintaining Python services — FastAPI applications and Azure Functions
Designing and consuming REST APIs, with an eye on validation, versioning and clear contracts
Working with MS SQL Server: query tuning, stored procedures and migrations
Working with Azure infrastructure — storage, queues, app configuration, monitoring
Writing and maintaining automated tests
Debugging and resolving defects in a live platform, including root cause analysis

Essential

Solid commercial Python (typically 3+ years)
Production experience with FastAPI, or a close equivalent such as Flask or Django REST
Practical experience building serverless services on Azure Functions
Strong MS SQL Server — you can write and optimise non-trivial queries, not just ORM calls
Working knowledge of Azure cloud services and infrastructure
Git, CI/CD pipelines, and a genuine testing habit
Comfortable working directly with client stakeholders

Nice to have

Financial services, lending or another regulated domain
SQLAlchemy or Alembic
Infrastructure as code (Bicep or Terraform)
Azure DevOps
Experience in a consultancy or client-facing delivery setting

Details

Rate: £350 per day
IR35 status: Outside IR35
Contract length: 6 months minimum, with strong potential to extend
Location: Hybrid — 3 days per week on-site, central London
Start: [ASAP / September 2026]

To apply

Send your CV through Indeed with a short note on a recent Python and Azure project you worked on and what your part in it was. No agencies.

Pay: From £350.00 per day

Work Location: Hybrid remote in London EC4M

Quick apply

Refine Your Search

senior software developer (python) jobs in london, eng

Mid-Level Python Developer (Outside IR35)

Quantitative Software Developer

Full Stack Developer

Staff/Lead Python Engineer (FastAPI, Orchestration)

Staff / Senior Software DevOps Engineer

Senior Backend Software Engineer - Application Development

Dev Ops - Java/Python - London

Senior Quant Developer

Senior Python Developer

Senior+ Software Engineer

Senior Software Engineer, Chem-Bio

AI Automation Developer

Senior Software Engineer

Senior Full-Stack Developer

Senior Software Engineer (Backend)

Senior Python Developer

Senior Software Engineer - Advisory Suite

Senior ML Software Developer (Brahma AI - A DNEG Dedicated Unit of Brahma)

Python Counterparty Credit Risk Senior Developer, Vice President

Senior Developer

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