Principal Cybersecurity Software Engineer

Barclay Simpson; City Of London; On-site; GBP 168,000 - 280,000; Full time

Benefits offered by this job

Visa sponsorship

BONUS

Job summary

Barclay Simpson is assisting a global financial services organisation in hiring a Principal Cybersecurity Engineer at a senior IC level. The role combines elite hands-on software engineering with high-impact cyber leadership, with about 40–50% of time spent coding.

The successful candidate will tackle threats, analytics and automation at scale, guiding engineering direction and setting new standards across teams. London is ideal; visa sponsorship is available for the right candidate.

Qualifications

• Deep cybersecurity expertise and elite hands-on software engineering ability.
• Senior IC with leadership mindset and ability to influence engineering directions.
• Ability to code 40–50% of time and solve complex security problems.

Responsibilities

• Address complex security challenges across threat detection, anomaly identification, cyber automation and advanced analytics.
• Turn large volumes of security telemetry into practical protection.
• Lead technical workshops and raise standards across teams.

Skills

Cybersecurity expertise

Hands-on coding

Threat detection

Data analytics

Software engineering

Job description

A global financial services organisation seeks a Principal Cybersecurity Engineer to help build the next generation of data-driven security capabilities at exceptional scale.

This is a senior (Director grade) individual contributor position. The role requires a candidate with deep cyber expertise and elite hands‑on software engineering ability, who still wants to spend around 40‑50% of their time coding.

You will work on complex security challenges across threat detection, anomaly identification, cyber automation and advanced analytics, turning vast volumes of security telemetry into practical protection.

The ideal candidate may come from a security product vendor, cyber start‑up, red team/offensive security background, or a large‑scale engineering environment where cybersecurity, data and software genuinely intersect.

You will be a senior thought leader who is looking for a role which offers the opportunity to influence engineering direction, lead technical workshops, raise standards across teams and help solve cutting‑edge problems that do not have obvious off‑the‑shelf answers.

This is a rare opportunity for a cyber‑minded principal engineer who wants to build, challenge, influence and operate at serious scale as an IC technical leader.

Base salary up to £280,000 + bens + bonus

Visa sponsorship is available.

Ideal office base location is London, however other UK and European locations can be considered for the right candidate.