Senior Web Security Engineer (ProdSec)

iProov; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

25 days annual leave

Growth shares

Pension scheme

Cycle to work

Life Assurance

Private health

Job summary

iProov is seeking a Senior Web Security Engineer to design, build and secure high‑performance web applications in demanding environments. You will protect client‑side code from tampering, implement anti‑tamper and runtime protection, and build WebAssembly modules using C++, Rust or AssemblyScript.

You will collaborate with developers and red teams to integrate security into the SDLC, research new attack techniques, and mentor engineers in secure development practices.

Qualifications

• 5+ years of software engineering experience.

Responsibilities

• Develop techniques to protect client-side code from tampering and reverse engineering.
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Job description

Senior Web Security Engineer (ProdSec) at iProov

Senior Web Security Engineer

About iProov

iProov provides science-based biometric solutions that enable the world’s most security-conscious organizations to streamline secure remote onboarding and authentication for digital and physical access. Our award-winning liveness technology and iSOC offer unmatched resilience against deepfakes and generative AI threats while ensuring effortless, scalable user experiences. Trusted by leading governments and enterprises, including the U.S. Department of Homeland Security, U.K. Home Office, GovTech Singapore, ING, and UBS, iProov sets the standard in biometric identity assurance.

This global trust is built not only on our technology but on the strength of the people behind it. For us, diversity at iProov is about reflecting the customers we serve, holding the principles of equality and inclusion at the heart of everything we do and all that we stand for, embracing differences, creating possibilities, and growing together. We aim to foster a culture where individuals of all backgrounds feel confident in bringing their whole selves to work, feel included, and their talents are nurtured, empowering them to contribute fully to our purpose.

The Role

Reports to: Head of Red Team

Location: UK (Flexible)

Comp: Negotiable (Base) + Company Performance Bonus (10%) + Share Options + UK iProov Benefits

We're looking for an experienced Senior Web Security Engineer to design, build, and secure high-performance web applications that run in some of the world's most demanding environments.

How you can make an impact

• Develop techniques to protect client-side code from tampering, reverse engineering, debugging, automation, and exploitation.
• Design and implement anti-tamper, integrity verification, and runtime protection mechanisms.
• Build high-performance WebAssembly modules using C++, Rust, or AssemblyScript.
• Research emerging attack techniques targeting web applications and develop practical mitigations.
• Collaborate closely with developers, product, and red teams to integrate security into the development lifecycle.
• Investigate vulnerabilities, perform root-cause analysis, and develop long-term remediation strategies.
• Contribute to technical architecture and mentor other engineers on secure development practices.

What we would like to see from you

Technical Expertise

• Strong experience developing production WebAssembly applications.
• Experience with Rust, C++, or another systems programming language used to produce WASM modules.
• Experience securing client-side applications against:
  • Reverse engineering
  • Runtime modification
  • Instrumentation frameworks
  • Code injection
• Experience with secure software architecture.

Security Knowledge

Experience in several of the following:

• WASM binary analysis
• Static and dynamic analysis
• Anti-debugging techniques
• Runtime integrity verification
• Secure code signing and integrity checking
• Software protection techniques
• Secure SDLC practices
• 5+ years of software engineering experience.
• Strong testing, debugging, and profiling skills.
• Experience working with CI/CD pipelines and automated security testing.
• Excellent communication skills with the ability to explain complex technical concepts clearly.

Nice to Have

• Knowledge of WebGPU, WebRTC, or WebCodecs.
• Experience with binary instrumentation and compiler toolchains.
• Experience building SDKs or developer platforms.
• Experience with biometrics, identity verification, or fraud prevention technologies.
• Contributions to open-source security tools or security research publications.
• 25 days Annual Leave, plus 8 Bank Holidays (more holiday with service - up to an extra 5 days off per year based on your continuous service)
• Growth Shares allocated after passing probation (6 months of service)
• Salary sacrifice schemes including: Pension, Cycle To Work and Electric Car Scheme
• Nursery Sacrifice Scheme
• Work Overseas Perk - Work globally for up to 2 weeks
• Life Assurance
• SmartHealth - Access to private GP, Psychologist, Nutritionist along with tailored fitness plans for both you and your family
• Benefit from personalized 1:1 career coaching with our in-house Occupational Psychologist
• Award winning L&D platform with personal allocated training budgets
• Enhanced paid family leave
• Flexible hybrid working environment
• Free Barista Coffee/Tea, biscuits with fruit in the WeWork office
• Free access to WeWork discounts and free online well-being sessions
• Vitality Health - a range of options available on this below

The Vitality Programme includes a number of reward benefits that all employees have access to as part of the plan, for example:

• Private Health cover including Dental, Optical, and Audiology
• 50% off monthly gym memberships
• Apple watches significantly discounted based member vitality status
• Half price trainers with Runners Need
• Weekly rewards – Free coffee with Café Nero
• Monthly rewards – Free Cinema ticket
• Discounts on travel with Expedia (hotels) and Mr & Mrs Smith with discounts getting greater throughout the year based on a members vitality status
• Amazon prime free months based on activity
• Up to 25% cashback at Waitrose when buying healthy foods
• 75% off stays at Champneys Health Spas
• Allen Carr’s £299 no smoking programme for freeAccess to Vitality Healthy Mind with 30% off Headspace subscriptions and the ability to earn Vitality points for using Buddhify, Calm and Headspace
• Discounts on Weight Watchers

Our Culture & Recruitment Process

At iProov, we're incredibly proud of the culture we've carefully curated. Our culture enables diverse thought, curiosity and innovation. Our team strives to do everything to the highest standard possible to achieve the remarkable. To do that we need different perspectives, experiences and ideas alongside an environment where these are welcomed - we want everyone to feel confident in bringing their full capabilities to work. We firmly believe psychological safety is key to building and nurturing great teams. We’re a small and dynamic company, that means having the right skills is important, and we know that our best work emerges when people feel secure, welcomed and respected.

As an equal opportunities employer, we encourage applications from people of all backgrounds. We’re committed to building a workforce that is representative of the people we serve. We will not put someone at a disadvantage or treat them less favourably because of race, color, national origin, ancestry, age, disability, creed, religion or belief, sex, sexual orientation, gender reassignment, marriage or civil partnership, or pregnancy and maternity. Our goal is to find people who are passionate about creating a safer, more secure world.

Our recruitment process is designed to be fair and transparent, focusing solely on your qualifications, competence, and suitability for the role. We review all applications carefully and will be in touch with shortlisted candidates regarding the next steps in our interview process. If you need an adjustment for a disability or any other reason during the hiring process, please send a request to [e-mail]