Senior Mobile Security Developer at Waracle

Waracle are looking for a Senior Mobile Security Developer for an exciting new role joining our world-class digital technology consultancy, home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.

We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.

This is a Hybrid role, offering the flexibility to balance your professional and personal life, with 2 days a week spent connecting with colleagues in our London office or on client site.

The Role

As a Senior Mobile Security Developer, you will define squad-level technical architecture and technical approach. You are a technical expert who ensures quality, security, and compliance across projects, driving robust and scalable solutions.

This role will be pivotal in building, delivering, and driving the security of our mobile platform, while being an integral part of our full-stack mobile practice, contributing to end-to-end development and security excellence across both front-end and back-end mobile systems.

Key aspects of the role include:

• Design and Delivery of a World-Class Security Framework: Lead the design and delivery of security services, including mobile penetration testing, research, consultancy, and advisory engagements.

• Technical Strategy & Architecture: Define secure technical approaches, identify risks, and develop effective threat models and mitigation strategies.

• Strategic Planning: Translate business objectives into technical strategy and ensure technical roadmaps align with long-term client goals.

• Agile Practices: Expertise in Agile methodologies, with a focus on resolving impediments and driving adoption across teams.

• Client Engagement: Communicate effectively with clients, manage expectations, and provide practical, risk-based security recommendations.

• Continuous Improvement & Collaboration: Drive innovation, adopt emerging security practices, share knowledge, and support team success.

What you'll bring:

We are seeking a highly technical expert with a strong focus on mobile platform security. You should bring:

• Mobile Security Expertise: Strong hands-on knowledge of Android and iOS security fundamentals, common mobile threats and vulnerabilities, security architecture, controls, and mitigation techniques.

• Mobile Security Testing: Practical experience in mobile penetration testing, security assessments, threat modelling, and implementing or assessing security controls.

• Security Problem Solving: A systematic and analytical approach to identifying, investigating, and resolving mobile security issues.

• Authentication & Cryptography: Strong understanding of authentication, authorisation, cryptography, encryption, and secure design principles, with the ability to recommend appropriate cryptographic controls.

• Continuous Improvement: A proactive approach to improving security practices, tooling, controls, and ways of working.

Desirable knowledge & experience:

• Mobile Security Tooling & Analysis: Experience with reverse engineering, analysis techniques, and tools such as Burp Suite Pro, Frida, Objection, JADX, IDA Pro, Hopper, Radare, ADB, Apktool, YARA, Xcode, and Android Studio.

• Mobile Development & DevSecOps: Knowledge of Android/iOS development, secure development practices, DevSecOps tooling, testing, and automation frameworks.

• Development & Reverse Engineering: Familiarity with C, Java, Kotlin, Objective-C, Swift, JavaScript, Python or Bash, and ideally ARM/ARM64 assembly.

• Security Research: Awareness of emerging security technologies, Cloud security, and developments in mobile operating systems, APIs, tools, and security libraries.

What to expect from our hiring process

• 1. First Hello: An informal chat with your dedicated Talent Attraction Partner to talk about Waracle, what you want out of your next move, salary, benefits, and office hybrid working model.

• 2. Craft Showcase: A chance to demonstrate your real-world expertise. Depending on the role, this will be a focused take-home task (capped at 2–3 hours to respect your time) or a practical presentation.

• 3. Talking Impact: A collaborative deep dive into how you solve problems, work with others, and raise the bar, guided by our core values and competency framework.

Your Talent Attraction Partner will be in your corner through every step right up to your Welcome Ritual on day one

Our Benefits

We believe in supporting our team, inside and outside of work. Here's a glimpse of what you can expect:

• Rest & Recharge: You'll receive 27 days of annual leave, plus 8 bank holidays, totaling 35 days of holiday to unwind and pursue your passions.

• Financial Future & Security: Plan for retirement with our company-matched 5% pension contribution. For added peace of mind, we also offer a Death in Service benefit, providing 2 x your annual salary for your loved ones.

• Health & Wellness: Our Medicash Health Cash Plans help cover everyday healthcare costs, complemented by an Employee Assistance Programme for confidential support, and Group Sickness Cover for peace of mind.

• Flexible Working: We champion hybrid working, providing a home office setup budget to ensure you're comfortable and productive wherever you are.

• Learning & Development: Invest in yourself with access to Udemy Business and a dedicated learning and development budget for continuous growth.

• Lifestyle Perks: Make the most of our Cycle to Work Scheme, and enjoy exclusive gym and retail discounts.

• Family First: Our enhanced parental leave policies include support for fertility journeys, recognising diverse family needs.

• Community & Connection: We foster a vibrant culture with regular fun meet-ups and lunch on us in the office once a month. You'll also have the opportunity to make a local impact through Spirit of Waracle, our initiative for getting involved in charitable causes locally, building strong team bonds and giving back.

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, gender, disability, religion/belief, sexual orientation or age.

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