Mobile Security Engineer

Barclays; Knutsford; On-site; GBP 65,000 - 100,000; Full time

Job summary

Barclays is seeking a Mobile Security Engineer in Knutsford (Radbroke Hall) to build and maintain security controls for mobile apps. You will work in a supportive environment to grow niche mobile security skills while applying cryptographic concepts and secure development practices.

The role emphasizes collaboration with developers and security teams, risk and controls, and the continuous improvement of cryptographic solutions to protect customer data.

Qualifications

• A solid foundation in at least one programming language such as Java, Kotlin, Swift, Objective‑C, C#, or Node.js.
• A good understanding of the software development lifecycle, including source control, build, test, and release activities.
• Some hands‑on experience or exposure to build pipelines using tools such as Jenkins or GitLab Pipelines.

Responsibilities

• Provision of subject matter expertise on security systems and engineering patterns.
• Development and implementation of protocols, algorithms, and software applications to protect sensitive data and systems.
• Management and protection of secrets, ensuring that they are securely generated, stored, and used.
• Execution of audits to monitor, identify and assess vulnerabilities in the bank's infrastructure/software and support the response to potential security breaches.
• Identification of advancements to support the innovation and adoption of new cryptographic technologies and techniques.
• Collaboration across the bank to ensure cryptographic solutions align with business objectives and regulatory requirements.

Skills

Java

Kotlin

Swift

Objective‑C

C#

Node.js

Tools

Jenkins

GitLab Pipelines

Job description

Every day, Barclays’ mobile apps support hundreds of thousands of customers with important financial transactions, and it is critical that these transactions are secure. Our Android and iOS mobile apps use multiple layers of cryptography and encryption to protect customers and their data.

To support this, we are hiring a Mobile Security Engineer who will play a key role in building and maintaining our mobile security containers, controls, and protocols. This role is suitable for applicants who have a strong engineering foundation and a genuine interest in learning mobile security, rather than deep prior experience in the domain. This is an excellent opportunity to grow your technical capability in mobile security within a supportive engineering environment.

We recognise that mobile security is a specialist area. As such, we are looking for someone who is curious, motivated, and keen to develop niche skills, supported by on-the-job learning and mentoring.

Successful candidates will have:

• A solid foundation in at least one programming language such as Java, Kotlin, Swift, Objective‑C, C#, or Node.js.
• A good understanding of the software development lifecycle, including source control, build, test, and release activities.
• Some hands‑on experience or exposure to build pipelines using tools such as Jenkins or GitLab Pipelines.

The following skills or interests would be beneficial, but are not essential:

• An interest in software cryptography concepts and how they are applied in internet‑facing mobile applications.
• Awareness of build and release controls, including versioning, dependency management, and promoting artefacts across environments.
• A well‑organised approach with strong attention to detail.
• The ability to manage multiple work requests and adapt priorities as needed.

You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen, strategic thinking and digital and technology, as well as job‑specific technical skills.

The successful candidate will be based in Knutsford (Radbroke Hall).

Purpose of the role

To develop, implement and maintain solutions that support the safeguarding of the banks systems and sensitive information.

Accountabilities

• Provision of subject matter expertise on security systems and engineering patterns.
• Development and implementation of protocols, algorithms, and software applications to protect sensitive data and systems.
• Management and protection of secrets, ensuring that they are securely generated, stored, and used.
• Execution of audits to monitor, identify and assess vulnerabilities in the banks infrastructure/software and support the response to potential security breaches.
• Identification of advancements in to support the innovation and adoption of new cryptographic technologies and techniques.
• Collaboration across the bank, including developers and security teams, to ensure that cryptographic solutions align with business objectives, security policies and regulatory requirements.
• Development/Implementation and maintenance of Identity and Access Management solutions and systems.
• To perform prescribed activities in a timely manner and to a high standard consistently driving continuous improvement.
• Requires in‑depth technical knowledge and experience in their assigned area of expertise.
• Thorough understanding of the underlying principles and concepts within the area of expertise.
• They lead and supervise a team, guiding and supporting professional development, allocating work requirements and coordinating team resources.
• If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others.
• OR for an individual contributor, they develop technical expertise in work area, acting as an advisor where appropriate.
• Will have an impact on the work of related teams within the area.
• Partner with other functions and business areas.
• Takes responsibility for end results of a team’s operational processing and activities.
• Escalate breaches of policies/procedure appropriately.
• Take responsibility for embedding new policies/procedures adopted due to risk mitigation.
• Advise and influence decision making within own area of expertise.
• Take ownership for managing risk and strengthening controls in relation to the work you own or contribute to. Deliver your work and areas of responsibility in line with relevant rules, regulation and codes of conduct.
• Maintain and continually build an understanding of how own sub‑function integrates with function, alongside knowledge of the organisations products, services and processes within the function.
• Demonstrate understanding of how areas coordinate and contribute to the achievement of the objectives of the organisation sub‑function.
• Make evaluative judgements based on the analysis of factual information, paying attention to detail.
• Resolve problems by identifying and selecting solutions through the application of acquired technical experience and will be guided by precedents.
• Guide and persuade team members and communicate complex/sensitive information.
• Act as contact point for stakeholders outside of the immediate function, while building a network of contacts outside team and external to the organisation.

All colleagues will be expected to demonstrate the Barclays Values of Respect, Integrity, Service, Excellence and Stewardship – our moral compass, helping us do what we believe is right. They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave.