iOS Cyber Mobile Specialist in London

About the Company

L3Harris is dedicated to recruiting and developing high‑performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work‑life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission‑critical needs always in mind, our employees deliver end‑to‑end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Description

Working at Trenchant means working alongside the best security researchers and product engineers from across the security research and intelligence communities. You will be engaged on the most challenging problems in the toughest environments and delivering solutions supporting the cutting edge of cyber security research. The primary work location is Central Piccadilly Circus. Infrequent travel to our Ottawa, London and Sydney offices in support of technical exchanges is highly encouraged. We require team members with an eye for security, to serve as key contributors on the Global Engineering Support team. The candidate must possess first‑class System Engineering, Networking, and infosec skills and an eye for organization. Trenchant is an elite global team of engineers and security researchers charged with building world‑class computer security products. Trenchant’s expertise is the by‑product of the L3Harris acquisition of two highly‑regarded information security businesses – Azimuth Security and Linchpin Labs. United under Trenchant, we are a key component of L3Harris’ Cyber Division. We are a trusted, discrete partner furnishing security products, consultancy, training and integration services to allied security, defense, and law enforcement agencies.

Essential Functions

• Collaborate with security researchers to adopt working research output into commercial products.
• Transform vulnerability writeups and proof of concept code into mature capabilities.
• Effectively communicate status and technical challenges using language that is appropriate to your audience.
• Participate in planning and prioritization activities with members of the commercial arm of the organization.
• Provide engineering support to customer reported issues.
• Provide guidance to less experienced engineers in technical fields relevant to the platform and the domains of cyber security and software engineering.
• Monitor industry trends and publicly disclosed techniques for incorporation into our products.

Qualifications

• Bachelor’s Degree in Computer Science (or related field) and 6 years of experience or Master’s and 4 years of experience. In lieu of a degree, 10 years of experience in cyber security and software engineering.
• Working knowledge of OS and application vulnerability classes.
• Proven experience analysing malware samples, producing vulnerability proofs of concept, and understanding mitigations provided by software patches.
• Demonstrated proficiency in all aspects of a mobile platform (Android or iOS) including OS internals, native programming languages (Objective‑C, Swift, Java, and/or Kotlin), and system security mechanisms.
• Comfortable with C programming, memory management concepts, assembly languages, and private (un‑documented) APIs.
• Demonstrated proficiency using reverse engineering tools such as IDA Pro, Ghidra, or Hopper and dynamic tools such as Frida or ADB.
• Demonstrated proficiency using common software development tools such as git, gitlab CI, and cmake.

Preferred Additional Skills

• Advanced degree in Computer Science, Cybersecurity or a related field.
• Demonstrated ability to take ambiguous or incompletely defined problems and resolve them through consultation with appropriate stakeholders.
• Demonstrated a collaborative and team‑oriented mindset for accomplishing goals and a bias to action.
• Substantial experience in CNO development/offensive cyber security.
• Experience working in an air‑gapped development environment.

Employee Benefits

• Bonus scheme.
• 25 days holiday per year (plus bank holidays), increasing with long service and with the opportunity to buy/sell up to 5 days.
• Private medical insurance with optional family cover.
• Pension scheme of up to 8% employer contribution.
• Life Assurance 4x salary (flexible up to 10x).
• Group income protection.
• Flexible opt‑in extras such as a health care cash plan, dental insurance, gym membership, critical illness cover, cycle to work scheme, travel insurance and electric car scheme.
• Employee Family Assistance Programme providing mental health and wellbeing support.

Important to Know

Due to the nature of our work some roles require a UK nationality and the ability to obtain a security clearance. Applicants who accept a conditional offer of employment must meet the requirement of right to work in the UK and must meet eligibility requirements for access to classified information and will be subject to government security checks.

Equal Opportunity Statement

L3Harris Technologies is proud to be an Equal Opportunity Employer. We are committed to maintaining a workplace that is free from unlawful discrimination and offers equal opportunities for all. Applications from individuals are encouraged regardless of age, disability, sex, gender reassignment, sexual orientation, pregnancy and maternity, race, religion or belief, and marriage and civil partnerships.