Cryptographic Software Engineer - Assembler

End Date

Thursday 30 October 2025

Salary Range

£70,929 - £106,394

Flexible Working Options

Hybrid Working, Job Share

Job Description Summary

Job Description

JOB TITLE

Cryptographic Software Engineer - Assembler

SALARY

From £70,929 dependent on experience and location

LOCATION(S)

Edinburgh or London

HOURS

Full time (This role will include a requirement to work as part of a 24x7 on-call rota)

WORKING PATTERN

Our work style is hybrid, which involves spending at least two days per week, or 40% of our time at our location listed above.

About this opportunity

The Chief Security Office (CSO) plays a vital role in delivering Lloyds Banking Group's vision of putting customers at the heart of everything we do, helping Britain prosper, and protecting the Group and its customers and suppliers from security threats.

In this role, you will be involved in the planning and migration of legacy code written in assembler and assisting with rewriting this in C. You’ll help maintain and help migrate services according to Group security standards and policies (and to agreed service levels) and will assist with the delivery of investment funded work within mainframe environments – this includes out of hours. Additionally, you’ll provide technical support (including incident and problem resolution for systems and processes in complex environments) – again this includes out of hours support.

Key responsibilities

• Provide support for our crypto environment to tight timescales.
• Help drive the crypto strategy and design across the mainframe development and test estate.
• Work closely with our key stakeholders to deliver against the technology roadmap.
• Work collaboratively across the wider Cyber Security teams to develop, promote, and implement process initiatives.
• Ensure processes and procedures are strictly adhered to.

Why Lloyds Banking Group

Like the modern Britain we serve, we’re evolving. Investing billions in our people, data, and tech to transform the way we meet the ever-changing needs of our 26 million customers. We’re growing with purpose. Join us on our journey and you will too.

What you’ll need

• Assembler and C programming and support skills on IBM mainframe systems
• Operational experience on z/OS systems
• Experience with transformation and decommissioning of legacy systems
• Bug fixing and troubleshooting in complex environments

Any experience of these would be really useful

• A working knowledge of encryption key management required for debit/credit card production
• Diagnostic skills and an ability to analyse technical information from multiple sources, allowing the provision of highly effective solutions in complex environments

About working for us

Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities and we’re committed to creating an environment in which everyone can thrive, learn and develop.

We were one of the first major organisations to set goals on diversity in senior roles, create a menopause health package, and a dedicated Working with Cancer Initiative.

We offer reasonable workplace adjustments for colleagues with disabilities, including flexibility in office attendance, location and working patterns. And, as a Disability Confident Leader, we guarantee interviews for a fair and proportionate number of applicants who meet the minimum criteria for the role with a disability, long-term health or neurodivergent condition through the Disability Confident Scheme.

We provide reasonable adjustments throughout the recruitment process to reduce or remove barriers. Just let us know what you need.

Benefits

We also offer a wide-ranging benefits package, which includes:

• A generous pension contribution of up to 15%
• An annual performance-related bonus
• Share schemes including free shares
• Benefits you can adapt to your lifestyle, such as discounted shopping
• Up to 30 days holiday, with bank holidays on top
• A range of wellbeing initiatives and generous parental leave policies.

Want to do amazing work, that’s interesting and makes a difference to millions of people? Join our journey.

At Lloyds Banking Group, we're driven by a clear purpose; to help Britain prosper. Across the Group, our colleagues are focused on making a difference to customers, businesses and communities. With us you'll have a key role to play in shaping the financial services of the future, whilst the scale and reach of our Group means you'll have many opportunities to learn, grow and develop.

We keep your data safe. So, we'll only ever ask you to provide confidential or sensitive information once you have formally been invited along to an interview or accepted a verbal offer to join us which is when we run our background checks. We'll always explain what we need and why, with any request coming from a trusted Lloyds Banking Group person.

We're focused on creating a values-led culture and are committed to building a workforce which reflects the diversity of the customers and communities we serve. Together we’re building a truly inclusive workplace where all of our colleagues have the opportunity to make a real difference.