Enterprise Security Engineer London

Mesh-AI Limited; Greater London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A deep-tech company in the UK is seeking a Security Engineer to enhance and safeguard its SaaS infrastructure. You will design and implement security tools while maintaining policies to protect corporate IT. This role requires over 10 years of experience in IT security and a hands-on approach to building secure automated workflows. Candidates with a practical mindset and proficiency in Microsoft Entra and IAM tools are encouraged to apply. The organization values diversity and offers equal employment opportunities.

Qualifications

• 10+ years in IT security, endpoint security, or corporate security engineering.
• Experience deploying and configuring security tools and building zero-trust environments.
• Proficient with Microsoft Entra and identity access management.

Responsibilities

• Partner with IT, Operations, and engineering for secure onboarding.
• Harden and monitor corporate devices ensuring compliance.
• Respond to and remediate internal security events.

Skills

IT security

Endpoint security

Automation-driven security

Microsoft Entra

SSO/SAML

Device management

Job description

PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software.

We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries. By enabling high-fidelity, multi-physics simulation through AI inference across the entire engineering lifecycle, PhysicsX unlocks new levels of optimization and automation in design, manufacturing, and operations — empowering engineers to push the boundaries of possibility. Our customers include leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive.

The Role

As a Security Engineer, you’ll be foundational in building and securing our internal systems and SaaS infrastructure. You will design, implement and maintain the security tooling and policies for protecting our corporate infrastructure. You'll partner with teams across the business to build strong security foundations that enable the business to grow safely.

What you will do

• Partner with IT, Operations and engineering to support secure onboarding/offboarding and access reviews.
• Harden and monitor corporate devices (MacOS, Windows, etc.) and ensure compliance with security policies.
• Respond to and remediate internal security events and misconfigurations
• Automate user lifecycle and SaaS security hygiene wherever possible
• Deploy and manage enterprise security tooling
• Manage identity and access management (IAM) across SaaS apps, SSO, and internal systems
• Partner with the IT and security incident response teams to support the creation and maintenance of a security corporate environment

What you bring to the table

• 10+ years in IT security, endpoint security, or corporate security engineering
• Experience deploying and configuring security tools and building zero-trust environments
• A practical, automation-driven approach to internal security at scale
• A hands-on mindset and willingness to wear multiple hats.
• Experience building secure automated workflows for common IT tasks
• Proficient with Microsoft Entra, SSO/SAML, device management tools
• Practical knowledge of endpoint and network security principles

Nice to Have Skills

• Experience supporting SOC 2, ISO 27001
• Familiarity with SaaS security posture management (SSPM) tools

We value diversity and are committed to equal employment opportunity regardless of sex, race, religion, ethnicity, nationality, disability, age, sexual orientation or gender identity. We strongly encourage individuals from groups traditionally underrepresented in tech to apply. To help make a change, we sponsor bright women from disadvantaged backgrounds through their university degrees in science and mathematics.

We collect diversity and inclusion data solely for the purpose of monitoring the effectiveness of our equal opportunities policies and ensuring compliance with UK employment and equality legislation. This information is confidential, used only in aggregate form, and will not influence the outcome of your application.