AI Engineer

Everfox; Greater London; Hybrid; GBP 59,000 - 97,000; Full time

Benefits offered by this job

Competitive annual leave

Pension match

Private medical insurance (PMI)

Dental coverage

Health cash plan

Income protection

Hybrid work environment

Job summary

Everfox in London (Hybrid) seeks an AI Software Engineer who thrives in unfamiliar codebases and ships AI-driven features. You will enhance workflows using modern AI tools and collaborate across teams to deliver high‑quality, maintainable software.

You have 4+ years of professional software development, experience with agentic tools, strong CS fundamentals, and a willingness to obtain government clearance if required. The role offers a competitive benefits package in a hybrid work environment.

Qualifications

• 4+ years of professional software development experience.
• Experience with agentic coding tools (Claude Code, Codex) and building custom extensions.
• Strong in at least one programming language and the ability to learn others quickly.
• Solid CS fundamentals: data structures, algorithms, concurrency, networking, APIs, testing, security.
• Ability to read unfamiliar code and reason about changes impact.
• Clear communicator who collaborates well with partner teams.
• Willingness to obtain Government Security Clearance if needed.

Responsibilities

• Implement and maintain features across varied languages and internal codebases.
• Add AI capabilities to products: model/API integration, prompt/context design, retrieval.
• Build evaluation, testing, and guardrails for measurable AI behavior.
• Use AI tooling to improve development speed, testing, and docs.
• Prototype quickly to de‑risk complex problems.
• Ramp up fast in unfamiliar systems and contribute early.
• Work as guest engineer across teams with clean handovers.
• Share patterns and tooling to improve engineering practices.
• Uphold quality, security, logging, testing, and responsible AI data handling.
• Contribute to CI/CD and developer tools to accelerate delivery.

Skills

4+ years software dev

Agentic coding tools

Strong programming language

CS fundamentals

Read unfamiliar code

Clear communication

Security clearance willingness

Education

Degree in Computer Science or related field

Tools

GitLab

Docker

Python

Job description

Trusted Connectivity for AI-Powered Dominance.

Everfox delivers trusted connectivity to protect the world’s most critical environments and safeguard the sensitive data powering decision advantage.

Built for mission-critical operations, Everfox protects what matters most by securing how data moves, how users access it, and how threats are neutralized across every domain.

We enable mission speed and secure collaboration across networks, domains, and allies, while ensuring the data powering AI and advanced analytics remains trusted and protected.

We don’t just defend systems; we deliver decision dominance.

Our Purpose. Protect what matters most by enabling organizations to operate security in the most complex and high‑risk digital environments.

Our Vision. To be the most trusted authority in high‑assurance cybersecurity, enabling secure collaboration across every domain.

Our Belief. Security should never limit mission success – it should enable it.

Our Promise. We deliver absolute confidence in environments where failure is not an option.

Everfox is seeking a versatile AI Software Engineer who thrives in unfamiliar codebases, learns quickly, and improves systems across diverse, fast‑moving projects. You’ll build AI‑driven features, enhance engineering workflows using modern AI tools, and work across multiple teams to deliver high‑quality, maintainable software.

Location

Hybrid – London, UK

Key responsibilities

• Implement, and maintain features across varied languages, frameworks, and internal codebases.
• Add AI capabilities to products: model/API integration, prompt and context design, retrieval, orchestration, and the surrounding infrastructure.
• Build evaluation, automated testing, and guardrails to ensure AI behavior is measurable and stable.
• Use and extend AI tooling and agentic workflows to improve development speed, test coverage, documentation, and reduce manual effort.
• Prototype quickly to de‑risk ambiguous or complex problems.
• Ramp up fast in unfamiliar systems—map key components, ask good questions, and contribute early.
• Work as a guest engineer in other teams’ codebases, aligning on scope, following conventions, and delivering clean, maintainable handovers.
• Share knowledge, patterns, reusable tooling, and guidance to improve engineering practices across the organization.
• Uphold high standards for quality, security, logging, testing, failure‑mode thinking, and responsible AI data handling.
• Contribute to CI/CD, automation, and developer tools where they accelerate project delivery.

Key Knowledge & Skills

• Degree in Computer Science or related field, or equivalent practical experience.
• 4 years plus professional software development experience and a record of shipping reliable software.
• Experience with agentic coding tools (e.g., Claude Code, Codex) and building custom extensions.
• Strong in at least one programming language and ability to become productive in others quickly.
• Solid understanding of CS fundamentals: data structures, algorithms, concurrency, networking, APIs, testing, and basic security.
• Able to read unfamiliar code, build a working mental model of it, and reason about the impact of your changes.
• Clear communicator who collaborates well and works effectively with partner teams.
• Self‑motivated, adaptable, and comfortable diving into challenging, ambiguous projects with support.
• If needed capable and willing to obtain Government Security Clearance

Nice to Have

• AI/LLM integration experience (APIs, RAG, tool calling, agent frameworks, hosted or local inference).
• Background improving legacy systems through testing, refactoring, and reducing technical debt.
• Breadth across desktop, mobile, backend, or systems software.
• CI/CD experience (GitLab, Docker) and Python for automation.
• Experience or interest in security‑sensitive environments.
• Awareness of usability and user experience.
• Empathy, clear communication, and ability to disagree constructively.

A reasonable estimate of the base salary range for this role is: £59,200.00-97,000.00 GBP The actual salary offered may vary within the range based on a candidates' unique experience, locale, and business needs.

In addition to base salary and either bonus or commission, Everfox offers a generous benefits package including competitive annual leave, pension match, PMI, dental, health cash plan, income protection, in a hybrid work environment.

Equal Employment Opportunity

Everfox is an equal employment opportunity employer and complies with all applicable federal, state, and local laws prohibiting discrimination.

Everfox does not discriminate against any employee or applicant based on race, color, religion, sex, age, national origin, disability, veteran status, marital status, medical condition, or any other category protected by applicable law.

Accessibility and Accommodations

If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access the Company’s career webpage as a result of your disability. You may request reasonable accommodations by sending an email to [e-mail].

Eligibility and Work Rights

Applicants must have the right to work in the location to which you have applied.