Deloitte
Software Development Team Lead
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Job Title: Software Developer Team Lead
Location: London (3 days onsite)
Duration: 12 Month
Contract Start Date: ASAP
IR35: Inside
Clearance: Active DV Security Clearance required
Deloitte
Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client-related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.
Role
We are seeking an experienced Senior Developer to provide technical leadership for the delivery of an AI-enabled Defence tasking and workflow platform. The role will help shape a secure application that combines Python/FastAPI services, React and TypeScript user interfaces, Camunda workflow orchestration, modular services, data persistence, and integration with existing Defence tasking processes.
Responsibilities:
- Lead the design and development of scalable microservice-based applications.
- Define technical architecture, engineering standards, and delivery guardrails for the development team.
- Guide implementation of workflow orchestration using BPMN, Camunda 8, and Zeebe-style patterns.
- Provide hands-on leadership across frontend, backend, platform, and integration workstreams.
- Ensure the solution is secure, maintainable, and suitable for deployment within Government environments.
- Support integration with existing Defence systems, intelligence workflows, and platform services.
- Champion DevSecOps, CI/CD, automated testing, and secure cloud-native engineering practices.
- Conduct code reviews, mentor team members, and support technical assurance activity.
- Champion responsible AI-coding (e.g., Claude Code) practices combining speed with security and resilience.
- Support customer demos, technical reviews, sprint planning, and architecture discussions.
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Essential Skills:
- Significant experience delivering software solutions in MOD, Defence Intelligence, National Security, or comparable secure environments.
- Proven experience leading agile software development teams.
- Strong engineering background across Python, FastAPI, REST APIs, React, and TypeScript.
- Experience designing and delivering microservice architectures.
- Experience with PostgreSQL, MongoDB, and mixed data-store architectures.
- Experience with Kubernetes-based platforms and containerised deployment.
- Knowledge of secure system design, identity/access controls, and service-to-service security.
- Experience working directly with Defence stakeholders, architects, and delivery teams.
- Experience establishing engineering standards, code quality practices, and technical governance.
- Experience with MOD development and deployment environments.
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Desirable Skills:
- Camunda 8, Zeebe, BPMN, or equivalent workflow orchestration platforms.
- AI-enabled applications, LLM integrations, semantic search, or agentic workflow concepts.
- GCP experience.
- Event-driven architectures and asynchronous messaging patterns.
- DevSecOps and platform engineering leadership experience.
IR35
As a means of managing tax, commercial, and reputational risks, Deloitte prohibits the use of Associates through Personal Service Companies ('PSCs'). All Associates must contract under PAYE arrangements through a Deloitte approved 'Employment Company' (aka 'umbrella company.')
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