At a Glance
- Tasks: Secure iOS apps and biometric tech against evolving threats with innovative security measures.
- Company: Join iProov, a leader in biometric identity assurance with a diverse and inclusive culture.
- Benefits: Enjoy 25 days leave, growth shares, flexible working, and wellness perks.
- Other info: Collaborate with top teams and contribute to a safer digital world.
- Why this job: Make a real impact in mobile security while working with cutting-edge technology.
- Qualifications: 3+ years iOS development and 2+ years in mobile security required.
The predicted salary is between 60000 - 80000 £ per year.
Senior i OS Security Engineer
About i Proov i Proov 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 i SOC offer unmatched resilience against deepfakes and generative AI threats while ensuring effortless, scalable user experiences.
Trusted by leading governments and enterprises, including the U.
Department of Homeland Security, U.
Home Office, Gov Tech Singapore, ING, and UBS, i Proov 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 i Proov 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
Comp
Negotiable (Base) + Company Performance Bonus (10%) + Share Options + UK i Proov Benefits
We are seeking an i OS Security Engineer to join our Product Security team and help secure our i OS applications, SDKs, and biometric verification technologies against evolving threats.
This role focuses on researching, designing, and implementing advanced mobile security protections, with a particular emphasis on application hardening, Runtime Application Self-Protection (RASP), anti-tampering controls, and runtime trust assessment.
You will play a key role in identifying emerging attack techniques targeting mobile and biometric ecosystems and developing innovative defenses to protect our products and customers.
The successful candidate combines deep i OS engineering expertise with a security mindset and a passion for understanding how attackers operate.
They will work closely with Science and Engineering teams to ensure security is embedded throughout the product lifecycle.
- How you can make an impact
- Mobile Security Architecture & Hardening
- Design and implement security controls for i OS applications and SDKs.
- Develop protections against reverse engineering, runtime manipulation, code injection, dynamic instrumentation, and application tampering.
- Implement and enhance jailbreak detection, application integrity validation, and runtime protection mechanisms.
- Design secure approaches for protecting sensitive data, cryptographic assets, and biometric-related workflows.
- Define and promote mobile security best practices across engineering teams.
- Mobile Security Research & RASP Innovation
- Research emerging mobile attack techniques targeting biometric identity verification systems, including runtime manipulation, device compromise, and application abuse.
- Evaluate, prototype, and implement Runtime Application Self-Protection (RASP) controls for i OS applications and SDKs.
- Assess the effectiveness of commercial and custom mobile protection technologies against evolving threats.
- Develop novel approaches to application integrity, runtime trust assessment, anti-tampering, anti-debugging, and anti-instrumentation controls.
- Investigate bypass techniques used by attackers and security researchers to identify gaps in existing protections.
- Be a key member of the Product Security function, collaborating with Science, Red Team and Engineering teams to evaluate, develop, and enhance security controls for biometric verification products and services.
- Contribute to the security roadmap by identifying opportunities to strengthen trust signals within biometric verification workflows.
- Produce technical research, proof-of-concepts, and recommendations based on threat trends affecting digital identity and biometric ecosystems.
- Security Reviews & Engineering
- Perform security architecture reviews and code reviews.
- Assess security implications of new platform capabilities, third‑party libraries, and architectural changes.
- Build security tooling, frameworks, and libraries that improve the security posture of i OS products.
- Support secure software development lifecycle (SSDLC) initiatives.
- Contribute to security standards, design patterns, and technical guidance for mobile development teams.
- Participate in strategic security initiatives and long‑term product security planning.
- What we would like to see from you
Experience
- 3+ years of professional i OS development experience.
- 2+ years of experience in mobile security, application security, or product security.
- Proven experience designing and implementing security controls for production mobile applications or SDKs.
- Technical Skills
- Expert‑level proficiency in Swift
• Deep understanding of
- i OS architecture and internals
- Entitlements
- Application lifecycle
- Memory management
- Mach‑O binaries
- Apple Security Frameworks
- Knowledge of cryptography, secure communications, and authentication mechanisms.
- Security Expertise
• Experience designing or implementing
- Runtime Application Self-Protection (RASP)
- Application hardening controls
- Anti‑tampering protections
- Anti‑debugging mechanisms
- Certificate pinning
- Application integrity validation
• Strong understanding of
- OWASP Mobile Top 10
- OWASP MASVS
- Secure SDLC practices
- Mobile attack techniques and adversarial behaviour
• Knowledge of
- Frida
- Objection
- Dynamic instrumentation frameworks
- Jailbreak environments
- Runtime hooking methodologies
- Nice‑to‑haves
The ideal candidate brings experience with biometric authentication or identity verification technologies, along with a background in securing mobile SDKs deployed within third‑party applications.
They will have developed custom RASP (runtime application self‑protection) capabilities and have solid knowledge of device attestation and trust assessment technologies.
Benefits
- 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
- Smart Health - 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
- Pension - 5% employee, 3% employer
- Flexible hybrid working environment
- Free Barista Coffee/Tea, biscuits with fruit in the We Work office
- Free access to We Work 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 free
- Access 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
- 50%-80% off Comprehensive Private Health screenings
- Equal Opportunities Mandate
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.
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Senior iOS Security Engineer (ProdSec) at iProov in London employer: iProov
iProov is an exceptional employer that champions diversity and inclusion, creating a supportive environment where every employee can thrive. With a hybrid work model based in the vibrant WeWork Waterloo in London, employees enjoy flexible working arrangements alongside competitive benefits, including a performance bonus and share options. The company prioritises personal growth and innovation, empowering its team to make meaningful contributions to cutting-edge biometric solutions that enhance security for clients worldwide.
StudySmarter Expert Advice🤫
We think this is how you could land Senior iOS Security Engineer (ProdSec) at iProov in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at iProov or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
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We think you need these skills to ace Senior iOS Security Engineer (ProdSec) at iProov in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at iProov.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at iProov and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at iProov
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If iProov uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
