Principal Architect - Secure Platforms

Salary: £40,000 - 70,000 per year

Requirements:

• Experience as a Principal, Staff Engineer, Lead Architect or equivalent level within a technically complex environment
• Deep expertise in systems and security
• Experience across several of the following: Linux, operating systems and systems engineering, security architecture, threat modelling and secure-by-design
• Experience across several of the following: networking such as TCP/IP, DNS, routing, firewalls, TLS and VPNs
• Experience across several of the following: PKI, certificates, authentication and identity
• Experience across several of the following: enterprise Microsoft and/or Linux environments
• Experience across several of the following: virtualisation, isolation and separation technologies
• Experience across several of the following: architecture across multiple teams or products
• Strong technical communication with engineers, customers and senior stakeholders
• Strong architectural judgement and comfort making decisions where there is not an obvious answer
• Ability to balance security, engineering effort, customer requirements and long-term product strategy
• UK citizen and able to achieve SC / DV Security Clearance

Responsibilities:

• Define the architecture and technical direction for new products and major initiatives
• Make complex architectural decisions and navigate technical trade-offs
• Embed security, assurance and maintainability into product design
• Provide architectural input into complex customer deployments and integrations
• Identify opportunities for shared platforms, services and tooling
• Act as a technical escalation point for challenging engineering and customer issues
• Develop architectural capability across the senior engineering community
• Be hands-on with complex systems, investigating problems and working alongside engineers to find the right solution

Technologies:

• Architect
• CTO
• Linux
• REST
• Security
• TCP/IP

More:

We are a successful and expanding Cyber Security software house providing encryption and information security products to finance, government, defence, law enforcement and pharmaceutical companies. You will join as a Principal Architect in a senior individual contributor role within a secure technology environment, working closely with our CTO, engineering, product, security and customer-facing teams. We offer a hybrid setup with two days a week in our Central London office and the rest from home, plus a salary up to 130k + OTE, 25 days holiday rising to 27 in two years, the ability to buy 5 extra days per year, private medical care, life cover, pension, subsidised gym membership and hybrid working.

last updated 37 week of 2026