Python Cyber Security Software Engineer

Client Server Limited; Greater London; Hybrid; GBP 40,000 - 70,000; Full time

Benefits offered by this job

Bonus

Pension

Private medical insurance

Life assurance

Enhanced parental leave

Employee assistance program

23 days of holiday + birthday

Training budgets

Free lunches

Job summary

Client Server Limited in London is seeking a Python Software Engineer to join our R&D team. You will develop a new greenfield product to counter AI-based security attacks, using Python and Rust on backend systems with an emphasis on robust, scalable design.

The role is based in London with two days a week in the office. We offer a salary range of £40,000–£70,000 per year (up to £80,000 with bonus), plus pension, private medical insurance, life assurance, enhanced parental leave, an employee

Qualifications

• Advanced Python and backend software engineering experience
• Advanced problem-solving and critical-thinking skills
• Interest in learning and adopting new technologies
• Experience with AWS, Azure, or GCP
• Some experience with Rust, TypeScript, and/or C++
• Strong knowledge of software engineering best practices
• Degree in a STEM discipline

Responsibilities

• Develop a new greenfield product to combat AI-based security attacks
• Work on projects ranging from rapid prototyping of new ideas to structured development of existing platforms
• Drive continuous improvement and innovation
• Use backend Python, Rust, and emerging technologies, selecting the right tools for each task
• Solve problems and iterate in a rapid development environment

Skills

Python

Backend engineering

Problem solving

Technical learning

Cloud platforms

Education

Degree in a STEM discipline

Tools

AWS

Azure

GCP

Rust

TypeScript

C++

Job description

Salary: £40,000 - 70,000 per year

Requirements

• Advanced Python and backend software engineering experience
• Advanced problem-solving and critical-thinking skills
• Interest in learning and adopting new technologies
• Experience with AWS, Azure, or GCP
• Some experience with Rust, TypeScript, and/or C++
• Strong knowledge of software engineering best practices
• Degree in a STEM discipline

Responsibilities

• Develop a new greenfield product to combat AI-based security attacks
• Work on projects ranging from rapid prototyping of new ideas to structured development of existing platforms
• Drive continuous improvement and innovation
• Use backend Python, Rust, and emerging technologies, selecting the right tools for each task
• Solve problems and iterate in a rapid development environment

Technologies

• AI
• AWS
• Azure
• Backend
• GCP
• Python
• Rust
• Security
• TypeScript
• Cloud

More

We are an advanced cybersecurity technology business using AI to help protect clients around the globe from advanced cyber threats. Youll join our R&D team as a Python Software Engineer, working with a friendly, supportive, talented, and diverse team. The role is based in London, with two days a week in our office, where we offer free lunches and team problem-solving sessions. The salary is up to £80,000, plus a bonus, pension, private medical insurance, life assurance, enhanced parental leave, an employee assistance program, 23 days of holiday plus an additional day for your birthday, charity giving schemes, and personal training and development budgets.

last updated 40 week of 2026