Senior OT Security & Cloud Engineer

deltaflare; Greater London; On-site; GBP 83,000 - 95,000; Full time

Benefits offered by this job

25 days annual leave

Employer contributed pension

MacBook and EC2 Linux dev environment

Job summary

deltaflare, the UK specialist in OT cybersecurity for Critical National Infrastructure operators, seeks a Senior Software Engineer to lead technical evaluation, develop PoCs, and engage with customers and regulators in London. You will own secure architectural controls across AWS-based systems and mentor engineers within the Technology team.

The role sits under the Head of Technology, is in-person in London, and offers a salary of £83,000–£95,000 per year, 25 days annual leave, a pension, and a

Qualifications

• Several years hands-on engineering experience delivering complex technical and security work independently and to a high standard.
• Ability to review, critique and constructively challenge technical work produced by others.
• Strong working knowledge across networking, Linux, architectural security, infrastructure as code, containers and cloud platforms.
• Software development ability in at least one language, with the judgement to assess system-level impact of code produced by others.
• Clear technical communication skills, including engaging credibly with customers, regulators and senior stakeholders.
• A degree in Computer Science, Software Engineering, Network Engineering, Cybersecurity or a related STEM discipline, or equivalent capability demonstrated through substantial industry experience.
• Professional-level certifications such as CISSP, cloud security, or ISC2 certifications.
• Experience in OT/ICS security, regulated industries or Critical National Infrastructure environments.
• Applied experience of NIS2, NCSC CAF, IEC 62443, OT/ICS protocols or architecture, or mentoring junior engineers.

Responsibilities

• Lead the evaluation and proving of new technology before delivery, including software development for proofs of concept, demonstrators and structured technical assessments.
• Iterate customer technical and security commitments into practical controls, configuration, software changes and mitigations for the systems you own.
• Provide independent technical challenge to Development and Assurance, reviewing source code, infrastructure-as-code and architecture against requirements and good practice.
• Front direct technical engagement with customers, regulators and industry bodies for owned systems and areas, preparing materials and evidence that stand up to scrutiny.
• Design, implement and maintain architectural controls across our AWS based systems, identifying, remediating and evidencing security and resilience issues across the business.
• Oversee and review work produced by Graduate Engineers and Engineers, giving constructive, standards-based feedback that raises the technical bar.
• Deepen your primary technical specialism while building cross-functional awareness across OT cybersecurity, cloud security, assurance and UK Critical National Infrastructure.

Skills

Senior engineering

Security engineering

Independent delivery

Stakeholder engagement

Technical leadership

Education

CS/SE/Cybersecurity degree

Tools

AWS

EC2

Linux

Cloud

MacBook

Network

Security

Job description

deltaflare, the UK specialist in OT cybersecurity for Critical National Infrastructure operators, seeks a Senior Software Engineer to lead technical evaluation, develop PoCs, and engage with customers and regulators in London. You will own secure architectural controls across AWS-based systems and mentor engineers within the Technology team.

The role sits under the Head of Technology, is in-person in London, and offers a salary of £83,000–£95,000 per year, 25 days annual leave, a pension, and a