IT system tester jobs in Windsor, Berkshire

System Tester - Contract - £450 outside IR35 - Hybrid (London 2 days per week) Kindly note that this is a contract position, and applicants are required to have the legal right to work in the UK. La Fosse has partnered with a leading entertainment business to support the recruitment of a skilled System Tester. The successful candidate will work with enterprise database systems, including...

This post is for our client. We are seeking a candidate with technical experience in a high-paced organization and a genuine passion for addressing business needs through exceptional customer experience. As an individual contributor on this team, you will be managing, deploying, and supporting desktop and office standards. If you are a curious, motivated person and are looking to make an...

You will be the driving force behind maintaining our key business systems and data, IT infrastructure, IT security and digital tools, ensuring they empower our teams, delight our customers and keep us ahead in a fast-moving luxury retail landscape.

Monitoring Senior IT Systems Administrator (OSS) - 20 month FTC Indra is one of the leading global technology and consulting companies and the technological partner for core business operations of its customers worldwide. It is a world-leader in providing proprietary solutions in specific segments in Transport and Defence markets, and the leading firm in Digital Transformation Consultancy and...

We believe in better. And we make it happen. Better content. Better products. And better careers. Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, SkyQ to Sky Glass, we never stand still. We optimise and innovate. We turn big ideas into the products, content and services millions of people love. And we do it all...

Are you an ambitious individual with a passion for uncovering vulnerabilities and strengthening digital defences? As a Penetration Tester you will be playing a key role in protecting our clients’ critical systems. Working in a fast-paced environment you will be working on multiple client engagements. This role has come about due to the amount of requirements they have in the pipeline. Loads of...

You will be an integral part of our testing team responsible for testing our mobile applications and web services across various study builds. The role will bring plenty of interesting technical challenges and provide the opportunity for personal growth. We are looking for someone who is:

Automated & Manual Tester – Mobile Apps, Playwright, .Net, Blazor, SQL, Azure Outstanding opportunity to join this global enterprise and famous brand within the ‘magic circle’ of the legal sector. From a technology perspective, this organisation is a leader in its domain, significantly investing in AI and automation within an established cloud native (Azure), DevOps and Agile environment. We’re...

Non-Functional Tester We’re working with a global financial technology group undergoing a major transformation to modernise its post-trade infrastructure. The organisation is transitioning from legacy systems to a cloud-native, Kafka-based architecture designed for resilience, scalability, and performance. You’ll be part of a growing Non-Functional Testing (NFT) team responsible for ensuring...

Penetration Tester Permanent – up to £85k per annum London based – hybrid working – 2-3 days office based Must have CHECK CTL and certified Role Overview: We are seeking a highly skilled and experienced Offensive Security Consultant with a strong focus understanding on threat intelligence and attack methods. The ideal candidate will be responsible for managing and conducting advanced...

Mid/Senior Penetration Tester - Remote - Up to £60k - New Role (REF46) A leading organisation that delivers IT solutions to over 2000 companies in the public and private sectors, requires a skilled and enthusiastic Penetration Tester to join its growing team. Suitable candidates will have the following: - Proven history in the delivery of penetration testing across web applications, mobile...

QA Technical Tester Location: London | Hybrid / Contract We are seeking an experienced QA Analyst to join a dynamic Quality Assurance team, focusing on the RTB applications in a critical financial services environment. This role offers a unique opportunity to ensure the stability, reliability, and quality of production systems, with a focus on Front Office to Back Office applications. Key...

You will be working under the guidance of a team leader or Head of Assurance testing and will be actively involved in client engagements, while also having dedicated time to develop your skills and work towards industry-recognised certifications. A willingness to learn, adapt, and continuously improve is essential.

Infrastructure and Software Tester +Permanent opportunity +Hybrid working on site in London 2/3 days a week +£42,000 - £45,000 Skills: +Software Testing experience +Infrastructure Testing experience +AWS / Azure +API +Manual and automated testing experience We’re looking for a hands-on Tester who’s as comfortable checking infrastructure deployments and systems performance as they are...

CHECK Registered Penetration Tester - UK remote - £50k - £70k Location: Fully Remote (UK-based) Salary: £50,000 – £70,000 + Excellent Benefits About the Role We’re working with a well-established and fast-growing cybersecurity consultancy that is looking to expand its team of expert penetration testers. This is an exciting opportunity for a CHECK Registered Pen Tester (CTM level or above) to...

You will work closely with the Senior Accessibility Manager to ensure that all platforms, applications, and web interfaces comply with WCAG 2.2 AA and EAA standards, while also enhancing the user experience for all learners, particularly those using assistive technologies. Key Responsibilities

You will work closely with the Product Manager, Quality Assurance Lead, and wider technical team to test new and updated functionality, investigate bugs, and contribute to the ongoing improvement of testing processes. This is a fantastic opportunity to work on a Salesforce-based application that makes a real difference, while also gaining exposure to automation and complex system testing.

Senior Infrastructure Penetration Tester Location: London flexible hybrid Salary: £70,000 – £80,000 We’re hiring on behalf of our client, a growing Penetration Testing Consultancy, for a Senior Infrastructure Penetration Tester to join their elite Testing team. This role is ideal for someone who thrives on deep technical challenges, values autonomy, and enjoys working in a fast paced and...

Penetration Tester – UK/Remote - £65,000 Are you an ambitious individual with a passion for uncovering vulnerabilities and strengthening digital defences? As a Penetration Tester you will be playing a key role in protecting our clients’ critical systems. Working in a fast-paced environment you will be working on multiple client engagements. This role has come about due to the amount of...

Manual Penetration Tester Fully Remote We're proud to be working with a renowned MSP in support of their search for an experienced Manual Penetration Tester. Key Responsibilities - Carry out hands-on penetration testing across applications, infrastructure, and networks, with a particular focus on web apps and security products - Deliver highly technical and effective security engagements...