AI Front End Engineer

AI Front End Engineer** (Contract)

Duration: 6 Months (Possibility for extension)

Location: London/Hybrid (2 - 3 days on site)

Rate: A highly competitive Umbrella Day Rate is available for suitable candidates

Role Profile

In this development-heavy position, you will be responsible for creating production-ready user interfaces for AI-powered tools and GenAI applications. Working in a greenfield, lab-first environment, you will prototype, iterate, and deploy solutions that adhere to the highest standards of performance, security, and compliance in a regulated financial setting.

Key Responsibilities:

Design and develop modern, responsive front-end applications from the ground up using React, TypeScript, and Next.js.
Build secure, performant user interfaces that integrate with LLM APIs (e.g., Gemini, Azure OpenAI) and internal systems.
Implement advanced front-end security features, including token handling, session management, data masking, and audit logging.
Translate UX/UI designs into modular, reusable components aligned with enterprise design systems.
Integrate front-end applications with REST/GraphQL APIs, WebSockets, and backend services.
Collaborate closely with AI engineers, backend developers, and cloud architects to deliver end-to-end solutions.
Ensure compliance with cybersecurity and data privacy standards through secure coding practises and regular code reviews.
Deploy applications to GCP (Firebase, Cloud Run) and Azure App Services using CI/CD pipelines hardened for security and compliance.
Participate in code reviews, technical design discussions, and architecture planning sessions.

Required Skills & Experience:

Proven experience building secure, production-grade front-end applications in regulated environments (e.g., finance, healthcare, government).
Strong proficiency in modern JavaScript/TypeScript frameworks (React, Next.js) and responsive UI development.
Demonstrated ability to build front-end applications from scratch in greenfield or innovation lab settings.
Experience developing interactive UIs, dashboards, chat interfaces, and data visualisations for AI-powered tools.
Skilled in integrating front-end applications with APIs (REST, GraphQL, WebSockets) and backend services.
Deep understanding of front-end security practises (e.g., OWASP, CSP, input sanitization, role-based access).
Familiarity with secure API design, token management, and data privacy obligations (e.g., GDPR, ISO 27001).
Ability to build modular, reusable components aligned with enterprise design systems (e.g., MUI, Tailwind).
Exposure to secure SDLC practises, cyber risk assessments, and security posture reporting.
Comfortable working in agile, cross-functional teams with product managers, AI engineers, and cloud architects.

Candidates will need to show evidence of the above in their CV in order to be considered.

If you feel you have the skills and experience and want to hear more about this role 'apply now' to declare your interest in this opportunity with our client. Your application will be observed by our dedicated team.

We will respond to all successful applicants ASAP however, please be advised that we will always look to contact you further from this time should we need further applicants or if other opportunities arise relevant to your skillset.

Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.

As part of our standard hiring process to manage risk, please note background screening checks will be conducted on all hires before commencing employment