About Us
deltaflare is a leading provider of cutting-edge cyber security solutions. We are building Phoenix Platformphoenix, our flagship product designed to protect industrial control systems and operational technology (OT) environments.
We are looking for a Lead Engineer to work alongside the Head of Development in setting the technical direction of our Golang backend, enforce the engineering standard for the team, and stay hands-on in the code while doing it. This is an opportunity for an engineer who wants real influence over architecture and team practice without stepping away from building.
About the Role
This is the technical bridge between the Head of Development and the wider backend team, and it is fully hands-on in development. This role contributes proposals and technical direction into technical design discussions and owns the detailed design, turning it into concrete, unambiguous technical detail the rest of the team can build from. The effect is that the team always has the precise specifics and technical guidance it needs to produce high-quality deliverables. The role works AI-first: directing and rigorously reviewing AI-assisted implementation rather than hand-coding the bulk of it.
This is a technical leadership position rather than a pure people-management one. You will mentor and guide engineers and may hold dotted-line responsibility for their growth.
What You’ll DoTechnical Ownership & Detailed Design
- Contribute proposals and technical direction into architecture and Functional Design Specification (FDS) discussions.
- Own the detailed design: take the agreed functional design and architecture and translate it into concrete, unambiguous technical specifications that the development team can implement directly.
- Act as the team’s technical reference point for detailed design and implementation decisions.
- Run detailed-design reviews and continuously raise the engineering standard
- Maintain coding conventions, testing discipline, code review quality, and operational readiness.
- Produce high fidelity prototypes to facilitate detailed design discussions
- Support effort estimation and workload planning
Hands-On Backend Engineering
- Design and build highly scalable, secure Golang microservices, staying actively in the codebase.staying close to the code by directing and rigorously reviewing AI-assisted implementation, and intervening hands-on where judgement and security demand it.
- Design and implement RESTful and gRPC APIs with strong guarantees around secure communication and data integrity.
- Lead containerisation efforts and ensure secure orchestration practices for production.
AI-Augmented Engineering
- Define and mature the team’s AI-assisted development practice, setting the standard for how AI tooling is used across design, implementation, and testing.
- Establish and enforce review standards for AI-generated code, with rigorous verification of correctness, security, and maintainability.
- Raise team leverage and throughput through effective tooling, prompting practice, and automation, keeping human judgement firmly in control of design and security decisions.
Security & DevSecOps
- Champion DevSecOps: embed security throughout the CI/CD pipeline and ensure secure, automated deployments.
- Enforce robust Role-Based Access Control (RBAC), sound encryption practices, and compliance with standards such as ISO 27001, IEC 62443, and OWASP.
- Proactively identify and remediate vulnerabilities in distributed systems, applying best practices for memory safety and secure coding.
Team & Mentorship
- Mentor mid- and senior-level engineers, growing their technical depth and judgement., systems-design judgement, and ability to lead AI-assisted delivery.
- Lead by example in code reviews, pairing, and design discussions.
- Help shape hiring, onboarding, and the team’s technical culture.
Delivery, Quality & Operations
- Be accountable for the technical delivery, reliability, and operational health of your team’s services.
- Lead the creation and maintenance of comprehensive unit, integration, and securitysystem, integration, unit, and security tests.
- Drive performance and scalability improvements through rigorous debugging, profiling, and architectural refinement.
Cross-Functional Collaboration
- Work closely with front-end developers, UI/UX designers, and DevOps engineers to deliver a cohesive, secure product.
Documentation & Knowledge Sharing
- Maintain clear documentation for system architecture, security policies, and compliance requirements.
What We’re Looking ForEssential
- 7+ years of professional backend development experience, with strong, recent Golang expertise and deep grounding in microservices architecture and secure coding.
- A demonstrable track record of technical leadership at the detailed-design and implementation level
- Deep expertise with Docker, container orchestration, and secure deployment workflows.
- Proven experience designing and operating security-focused CI/CD pipelines.
- Strong knowledge of relational (e.g. PostgreSQL) and NoSQL (e.g. MongoDB) databases, with a focus on database security.
- Solid command of messaging protocols, distributed-system design, and advanced debugging techniques.
- Hands-on experience enforcing security frameworks such as OWASP, CIS Benchmarks, or NIST.
- Professional experience working in a regulated industry
- Demonstrated ability to lead AI-assisted development at scale, directing and rigorously reviewing AI-generated code.
- Proven ownership of system-level and integration test strategy, not only unit testing.
Desirable
- Contributions to open-source projects or security tooling.
- Experience with threat detection, vulnerability management, and secure software lifecycle frameworks.
- Experience leading or coordinating across multiple engineers.
- Understanding of industrial control systems (ICS) security and OT environments.
Leadership & Soft Skills
- Strong communication and stakeholder-management abilities.
- A genuine mentor, able to grow engineers and foster a collaborative, high-standards environment.
- A proactive, solution-oriented approach to complex problems.
- Sound judgement in balancing delivery pressure against technical and security risk.
What We Offer
- Highly competitive salary tailored for experienced technical leaders, plus performance and yearly bonuses.
- Genuine technical ownership of groundbreaking technology with direct impact on industrial security.
- Access to professional development opportunities and conferences.
- A dynamic, collaborative culture that encourages innovation.
Requirements & How to Apply
- Provide links to your GitHub or other repositories showcasing publicly available work.
- Ability to commute to / relocate to Richmond, TW9 1DL before starting.
- Valid United Kingdom work authorisation (required).[MJ1]
- Education: Bachelor’s degree (preferred).
Join deltaflare and lead the charge in building innovative, secure solutions for industrial control systems.
Skills Required
- 7+ years of professional backend development experience with strong, recent Golang expertise, microservices architecture, and secure coding
- Demonstrable track record of technical leadership at the detailed-design and implementation level
- Deep expertise with Docker, container orchestration, and secure deployment workflows
- Proven experience designing and operating security-focused CI/CD pipelines
- Strong knowledge of relational (e.g. PostgreSQL) and NoSQL (e.g. MongoDB) databases, with a focus on database security
- Solid command of messaging protocols, distributed-system design, and advanced debugging techniques
- Hands-on experience enforcing security frameworks such as OWASP, CIS Benchmarks, or NIST
- Professional experience working in a regulated industry
- Demonstrated ability to lead AI-assisted development at scale, directing and rigorously reviewing AI-generated code
- Proven ownership of system-level and integration test strategy (not only unit testing)
- Provide links to GitHub or other repositories showcasing publicly available work
- Ability to commute to / relocate to Richmond, TW9 1DL before starting
- Valid United Kingdom work authorisation
- Bachelor’s degree
- Contributions to open-source projects or security tooling
- Experience with threat detection, vulnerability management, and secure software lifecycle frameworks
- Experience leading or coordinating across multiple engineers
- Understanding of industrial control systems (ICS) security and OT environments
deltaflare Limited Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about deltaflare Limited and has not been reviewed or approved by deltaflare Limited.
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Flexible Benefits — Job ads explicitly list flexitime, indicating some schedule flexibility. Roles are in person in Richmond, so flexible hours appear to be the primary stated perk.
deltaflare Limited Insights
What We Do
deltaflare is the category leader in protecting critical national infrastructure from cyber attack. The power grids, water networks, and transport systems that keep the country running were never built for a connected, adversarial world; we make them defensible without ripping them out and starting again. Our platform, phoenix, gives infrastructure operators centralised command over the security of their operational technology (OT) estates: thousands of distributed, often decades-old assets that legacy IT security simply cannot reach. Operators dial protection to their own risk appetite, scale it across the fleet, and stay compliant with sector regulation, all without costly upgrades or downtime. The threat is not theoretical. State actors and criminal groups are actively targeting CNI, and the consequences of failure are measured in blackouts and contaminated water supplies, not lost data. That is the problem we exist to solve.
Why Work With Us
We are a fast-moving team building genuinely hard things at the intersection of cybersecurity, OT, and AI-augmented engineering. The problems are real, the stakes are national, and the work ships to operators running infrastructure people rely on every day. If you want your code to matter, this is where it does.
