Principal software engineer Work, Jobs in London Ec4y (with Salaries)

Principal Software Engineer - AI Trainer - Freelance - 8-20hrs/week - Remote
10x Team —London
- £93 - £159 an hour
- Remote
- Software development
- AI
- SDLC
Quick apply
Principal Software Engineer
Northrop Grumman —London
- £80,200 - £120,400 a year
- DevOps
- Travel
- Mentoring
- Relocation assistance
Principal Software Engineer, FDE
Microsoft —London
- £93,500 - £161,800 a year
- Full-time
- Computer Science
- Master's degree
- Bachelor's degree
4d
Principal Software Engineer
Codurance —London
- £100,000 - £125,000 a year
- Full-time
- Hybrid work
- Travel
- IT
- AI
- Employee assistance programme
Quick apply
Principal Python Software Engineer
CBOE —London
- Full-time
- Computer Science
- Java
- SQL
- Employee stock purchase plan
- Employee assistance programme
Principal Software Engineer
Simple Machines —London
- Full-time
- Hybrid work
- Agile
Quick apply
12d
Principal Software Engineer - UK
DISCO —London
- Remote
- Azure
- AWS
- APIs
Principal Software Engineer
Durlston Partners —London
- £150,000 - £260,000 a year
- Computer Science
- Java
- C++
Principal Software Engineer
Collinson —London
- Hybrid work
- Salesforce
- DevOps
- AWS
Principal Software Engineer
WeBuild-AI —London
- Hybrid work
- DevOps
- Mentoring
- AI
Quick apply
Principal Software Engineer / Principal AI Engineer
RELX —London
- Full-time
- Azure
- Computer Science
- Engineering
- Employee assistance programme
- Employee discount
Senior/Principal Software Engineer
Gemba Advantage —London
- £70,000 - £100,000 a year
- Hybrid work
- Java
- AWS
- Python
Quick apply
Principal Software Engineer / Principal AI Engineer
Elsevier —London
- Full-time
- Azure
- Computer Science
- Engineering
- Employee assistance programme
- Employee discount
Principal Software Engineer - C#
TP ICAP —London
- Full-time
- Computer Science
- Engineering
- Mentoring
Senior Software Engineer
Investa —London
- £85,000 - £105,000 a year
- Full-time
- Hybrid work
- Azure
- Java
- AWS
- Annual leave
Quick apply
Principal Software Engineer - Full Stack Python/AWS - Executive Director
JPMorganChase —London
- Full-time
- Master's degree
- AWS
- Scripting
Principal Product Engineer (Software)
Automata —London
- AI
- Employee assistance programme
9d
Principal Software Engineer - Product Platforms
AlphaSense —London
- Remote
- System design
- APIs
- AI
Analytics Forward Deployed Engineer Principal
Salesforce —London
- Full-time
- SQL
- Scripting
- APIs
Senior Software Engineer
Nandos —Putney
- Full-time
- Mentoring
- Agile
- AI
14d

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Principal Software Engineer - AI Trainer - Freelance - 8-20hrs/week - Remote

10x Team
London

Quick apply

Job details

Fixed term contract
£93 - £159 an hour

Qualifications

Software development
AI
SDLC

Full job description

Updated: 07 July 2026

Freelance | 8–20 hrs/week | Remote (EU/UK)

Are you an accomplished Principal Software Engineer passionate about shaping the future of artificial intelligence? Join 10x Team as a Freelance Principal Software Engineer – AI Trainer and leverage your technical expertise to enhance advanced AI models, all while enjoying the freedom of remote, project-based work.

About Us:
10x Team connects top independent professionals with leading AI labs to drive artificial intelligence advancement. We are looking for skilled software engineers based in the EU or UK to contribute to the training of AI systems in software architecture, engineering best practices, and technical problem-solving.

Key Responsibilities:

Review and refine AI-generated outputs related to software engineering, system architecture, and coding standards
Assess the accuracy and practicality of AI-driven recommendations on software design, testing, and implementation
Develop real-world case studies and technical scenarios from your professional experience
Create scenario variations covering software development lifecycle, technical challenges, and industry best practices
Identify and articulate gaps or risks in AI recommendations, providing clear, structured feedback
Influence how AI systems interpret and apply engineering principles and coding standards

About You:

Experienced Principal Software Engineer with a strong background in software architecture, development, and technical leadership
Based in the EU or UK
Deep understanding of multiple programming languages, architectural patterns, and software development best practices
Analytical and detail-oriented, capable of delivering actionable, structured feedback
Available 8–20 hours per week and comfortable with remote, asynchronous collaboration

Why Join 10x Team?

Flexible, project-based freelance assignments – 100% remote
Help shape how AI systems understand and apply software engineering principles
Access ongoing professional development through the 10x Team AI Academy
Supportive community of independent experts with clear briefs and streamlined onboarding

How to Apply:

After applying, you’ll receive an email detailing the steps to:

⁠Complete a short written assessment
Participate in an AI-powered interview

Important: Your application is only complete once you finish all steps via the email link.

Please note: these AI Lab missions are not traditional job openings with fixed start dates. Project demand is highly dynamic and matching depends on your expertise, availability, and current AI Lab needs. Some experts are matched within days, while others may wait longer for a suitable project.

Step into the future of AI-powered software engineering – apply today!

NOTE

At 10x, there are two types of opportunities:

1. Traditional freelance missions
These are regular project-based opportunities where the listed mission is the actual project you may work on.

2. AI Lab roles
For AI Lab roles, we scout, review, and approve profiles for access to future project opportunities.

The missions listed for AI Lab roles are not traditional job openings. AI Lab work is often highly confidential as this exposes information of what an AI Lab is working on, and project requests are unpredictable. When an AI Lab request comes in, we often need to respond within 24 hours with suitable talent.

Matching depends on the specific needs of each AI Lab project and your niche expertise. Once your profile is reviewed and approved, you may be matched to relevant AI Lab projects when suitable opportunities arise.

This can happen within hours, but it may also take months, depending on the researchers at the AI labs and their project needs.

Quick apply

Refine Your Search

principal software engineer jobs in london ec4y

Principal Software Engineer - AI Trainer - Freelance - 8-20hrs/week - Remote

Principal Software Engineer

Principal Software Engineer, FDE

Principal Software Engineer

Principal Python Software Engineer

Principal Software Engineer

Principal Software Engineer - UK

Principal Software Engineer

Principal Software Engineer

Principal Software Engineer

Principal Software Engineer / Principal AI Engineer

Senior/Principal Software Engineer

Principal Software Engineer / Principal AI Engineer

Principal Software Engineer - C#

Senior Software Engineer

Principal Software Engineer - Full Stack Python/AWS - Executive Director

Principal Product Engineer (Software)

Principal Software Engineer - Product Platforms

Analytics Forward Deployed Engineer Principal

Senior Software Engineer

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