Full Stack Engineer

Role Title: Full Stack Engineer - Tech & Delivery Lead

Location: Sheffield (3 days onsite mandatory)

Duration: 30/11/2026

Total cost to Capgemini: £530p/d via Umbrella

Role Description:

We are seeking an experienced Full Stack Engineer - Tech & Delivery Lead to lead the design, build, and delivery of an end‑to‑end internal AI‑enabled helpdesk and workflow automation platform.

This role combines hands‑on full‑stack engineering with technical leadership and delivery accountability, owning solutions across web UI, backend services, APIs, AI/agent orchestration, and enterprise integrations. The successful candidate will lead technical delivery within an agile team, ensuring solutions meet standards for security, resilience, scalability, and compliance, while delivering tangible business outcomes.

Key Responsibilities

Technical Leadership & Architecture

Act as the technical lead for the platform, defining end‑to‑end solution design across frontend, backend, APIs, and AI/agent workflows.

Make architectural decisions aligned to technology standards, cloud strategy, and engineering best practices.

Provide hands‑on guidance, code reviews, and mentoring to engineers within the delivery team.

Ensure non‑functional requirements are met, including security, performance, observability, and resilience.

Full‑Stack Engineering

Design and build user‑facing applications for employees, support agents, and administrators.

Develop frontend, backend, and API layers supporting chat, ticket submission, case management, status tracking, and escalation.

Build and enhance AI/LLM‑powered agent workflows to automate repetitive IT helpdesk tasks (e.g. password resets, account unlocks, access requests, knowledge‑based troubleshooting).

Implement prompt flows, guardrails, human‑in‑the‑loop mechanisms, fallback logic, and error handling suitable for enterprise use.

Delivery Ownership

Own delivery from discovery and design through development, testing, and deployment.

Work closely with Product Owners, Delivery Managers, and business stakeholders to plan, prioritise, and deliver incremental value.

Drive agile delivery rhythms (sprint planning, backlog refinement, demos, retrospectives).

Proactively manage delivery risks, dependencies, and technical debt.

Integration & Enterprise Enablement

Integrate solutions with enterprise platforms such as ticketing, identity, collaboration, and ITSM systems.

Ensure secure integration patterns including authentication, RBAC, auditing, and logging.

Support production releases and live service handover, including documentation and operational readiness.

Governance & Stakeholder Engagement

Ensure adherence to governance, security, and risk management requirements.

Communicate progress, risks, and technical decisions clearly to both technical and non‑technical stakeholders.

Contribute to continuous improvement of engineering and delivery practices across the team.

Required Skills & Experience

• Strong hands‑on full‑stack engineering experience with modern frontend and backend frameworks.
• Proficiency in Python, Node.js, or Java, and experience building production‑grade APIs and services.
• Demonstrated experience leading technical delivery in an agile environment.
• Experience designing and building REST APIs, workflow engines, and enterprise web applications.
• Working knowledge of LLM APIs, prompt engineering, agent/tool‑calling patterns, and responsible AI implementation.
• Solid understanding of security fundamentals including authentication, authorisation, secure coding, and auditability.
• Experience working in regulated or large enterprise environments.

Preferred Skills & Experience

• Experience integrating with ServiceNow, Jira, Zendesk, or similar ITSM platforms.
• Experience with collaboration tools such as Microsoft Teams or Slack integrations.
• Background in building internal employee tools or enterprise support platforms.
• Experience operating in financial services or similarly regulated industries.
• Familiarity with DevOps practices, CI/CD pipelines, and cloud‑native architectures.