Security systems engineer Work, Jobs in Mayfair, Gtl (with Salaries)

Quality Assurance Engineer
H2 Cognitive Designs Ltd —London
- £55,000 - £60,000 a year
- Full-time
- Hybrid work
- APIs
- Communication skills
Quick apply
2d
Security Systems Commissioning Engineer
Johnson Controls —London
- Overtime
- Customer service
- Employee assistance programme
- Referral programme
Network Engineer - Secure Cloud Services (DV Security Clearance)
CGI —London
- Full-time
- Oracle
- Computer networking
- Agile
Quick apply
Machine Learning Engineer
Valent —London
- From £55,000 a year
- Full-time
- Hybrid work
- Azure
- Master's degree
- AWS
- Employee stock purchase plan
- Sick pay
Quick apply
3d
Office Manager / Facilities Manager
R1CH.uk —Knightsbridge and Belgravia
- £82,000 - £155,000 a year
- Full-time
- Hybrid work
- Maintenance
- Administrative experience
- Supervising experience
Quick apply
3d
Infrastructure Engineer (DV Security Clearance)
CGI —Leatherhead
- Full-time
- Computer networking
Quick apply
Information Security Officer
BAM UK & Ireland —Hemel Hempstead
- Monday to Friday
- Bachelor's degree
- Travel
- Organisational skills
Security Engineer (Access Control )
THE WIGGETT GROUP —South East London
- £40,000 - £45,000 a year
- Full-time
- Customer service
- Maintenance
- Driving
Quick apply
1d
Systems Engineer (Product Security)
Frankenburg Technologies Group —London
- Hybrid work
- Engineering
- Communication skills
13d
Information Security Engineer
Bupa —London
- From £55,000 a year
- Full-time
- Annual leave
- Work from home
Quick apply
9d
Junior Network Engineer
Systematic Security Services Ltd. —London
- £26,000 - £28,000 a year
- English
- Windows
- Microsoft Office
- Employee assistance programme
Quick apply
2h
Anthropic Fellows Program, AI Security
Anthropic —London
- £2,310 - £4,300 a week
- Part-time
- Remote
- Master's degree
- Maths
- Bachelor's degree
- Flexible schedule
Scrum Master - SC Eligible - Government Projects
ByDesign Secure —London
- £575 a day
- Temporary
- Hybrid work
- Azure
- Agile
- In-person
Quick apply
7d
IT Systems & Infrastructure Engineer - Security
L3Harris Technologies —London
- Hybrid work
- AWS
- Bachelor's degree
- Travel
- Gym membership
9d
Infrastructure Engineers
CGI —London
- Full-time
- Azure
- AWS
- Agile
Quick apply
Tech Lead (EU/UK Based - Remote)
Duvo Inc —London
- £110,000 - £220,000 a year
- Full-time
- Remote
- Management
- APIs
Security Engineer
Kennedys Law - UK —London
- Full-time
- Remote
- Azure
- Scripting
Staff QA Engineer
Freetrade —London
- £95,000 - £115,000 a year
- Full-time
- Hybrid work
- English
- APIs
- Communication skills
Anthropic Fellows Program, AI Safety
Anthropic —London
- £2,310 - £4,300 a week
- Part-time
- Remote
- Maths
- Bachelor's degree
- APIs
- Flexible schedule
Service Desk Engineer (Field)
Charles Square —London
- £42,500 a year
- Full-time
- Hybrid work
- Azure
- Microsoft Outlook
- Software troubleshooting
- Annual leave
- Gym membership
Quick apply
9d

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security systems engineer jobs near mayfair, gtl

Quality Assurance Engineer

H2 Cognitive Designs Ltd
London

Quick apply

Job details

Full-time
£55,000 - £60,000 a year
2 days ago

Qualifications

Clinical research
iOS
Selenium
REST
Data pipeline
APIs
Communication skills

Full job description

About Us

H2 Cognitive Designs (H2CD) is a health technology company working at the intersection of cognitive science, clinical research, and large-scale digital assessment. We build platforms used to measure cognitive performance across clinical trials, occupational health programmes, and large institutional deployments in the UK and internationally.

Our clients include demanding and security-conscious organisations across healthcare, national institutions, and sectors where the performance and reliability of what we build genuinely matter. Our infrastructure is cloud-native, and our engineering team is distributed, collaborative, highly skilled and highly specialised. We have a rapidly growing portfolio of significant projects, and this role sits at the heart of how we deliver them.

The Role

This is a core quality engineering position. You will work day-to-day alongside developers through the full development cycle — from defining test criteria to automated testing, release validation, and monitoring. You will test systems — APIs, pipelines, and integrations — and build the automation that keeps them reliable as the platform grows.

You will own quality as a discipline within the team. That means being in the conversation early, pushing back when something is not testable, and making automation a first-class part of how the team ships.

What You Will Be Doing

Collaborating on the creation of test cases and acceptance criteria in a sprint cycle
Reviewing tickets and PRs to catch issues before they reach staging
Owning the automated test suite — writing, running, and maintaining tests as part of the CI/CD pipeline
Coordinating with DevOps on environment provisioning, deployment validation, and release sign-off
Running regression, integration, and load tests against each release candidate
Triaging and reproducing bugs reported from production, working with engineers to get them resolved

What We Are Looking For

Strong, practical QA engineering experience on web-based software products
Strong cross-browser — cross-device testing experience, including mobile (iOS and Android)
Proficiency writing and maintaining automated tests with Playwright, Cypress, Selenium, or equivalent
Experience testing REST APIs and validating data pipelines (Postman, REST-assured, or similar)
Familiarity with performance and load testing tools (k6, JMeter, Locust, or similar)
An investigative mindset — able to spot subtle defects that could compromise system performance, not just surface-level UI bugs
Clear written communication — well-structured bug reports, test plans, and the ability to discuss quality risks with non-engineers
Experience in a healthcare, clinical research, or academic software environment is a strong advantage

To apply, submit a CV and a short cover letter explaining your interest and relevant experience. Informal enquiries to [email protected]. No agency applications. This role is not eligible for UK visa sponsorship. Applicants must have the right to work in the UK independently and for the duration of their employment.

Pay: £55,000.00-£60,000.00 per year

Work Location: Hybrid remote in London EC2A

Quick apply

Refine Your Search

security systems engineer jobs in mayfair, gtl

Quality Assurance Engineer

Security Systems Commissioning Engineer

Network Engineer - Secure Cloud Services (DV Security Clearance)

Machine Learning Engineer

Office Manager / Facilities Manager

Infrastructure Engineer (DV Security Clearance)

Information Security Officer

Security Engineer (Access Control )

Systems Engineer (Product Security)

Information Security Engineer

Junior Network Engineer

Anthropic Fellows Program, AI Security

Scrum Master - SC Eligible - Government Projects

IT Systems & Infrastructure Engineer - Security

Infrastructure Engineers

Tech Lead (EU/UK Based - Remote)

Security Engineer

Staff QA Engineer

Anthropic Fellows Program, AI Safety

Service Desk Engineer (Field)

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