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Atos

Lead Full Stack Engineer

Atos

. Lead the design and delivery of secure, resilient and production-grade applications .

Posted 9/29/2026full-timeRemote • United KingdomSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in designing and delivering secure, resilient applications while leading teams through complex delivery processes. Proficient in AI-enabled application development, system architecture, and ensuring high standards of security, performance, and reliability.

Highest-signal resume keywords
Software Engineering ExperienceSystem Design and ArchitectureAI-Enabled Application DevelopmentLeadership and MentoringClient-Facing Communication

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Software EngineeringSystem DesignAI Application DevelopmentAgent OrchestrationAutomated TestingCI/CDCloud PlatformsData IntegrationPerformance EvaluationSecurity Assessment
Soft Skills
Excellent CommunicationJudgementProblem SolvingMentoringLeadership
Tools & Technologies
GoJavaC#PythonJavaScriptTypeScriptReactAWSAzureKubernetes
Certifications & Qualifications
SC Clearance Eligibility
Industry Keywords
GovernmentRegulated EnvironmentsEnterprise SystemsAI SecurityProduction-Grade Systems

Tech Stack

Tools & technologies
AWSAzureCloudJavaJavaScriptKubernetesPythonReactTypeScriptGo

About the role

Key responsibilities & impact
  • Lead the design and delivery of secure, resilient and production-grade applications
  • Remain hands-on across frontend, backend, APIs, data, integration, cloud and deployment
  • Build AI-enabled applications and agentic workflows connecting models, tools, data and enterprise systems
  • Design agent orchestration, retrieval, context, state, memory, permissions and human oversight
  • Establish robust approaches to AI evaluation, security, reliability, observability and cost
  • Solve complex problems across architecture, performance, scalability and production operations
  • Make pragmatic technical decisions based on evidence and explain trade-offs
  • Lead teams through ambiguity and complex delivery
  • Raise engineering standards through leadership, mentoring and constructive challenge
  • Work closely with clients, architects, product teams and delivery leaders
  • Shape programmes from discovery through production
  • Influence engineering standards, reusable patterns and technical strategy
  • Act as a trusted technical adviser to senior client stakeholders

Requirements

What you’ll need
  • Exceptional and recent hands-on software engineering experience
  • Record of personally delivering complex, production-grade systems
  • Deep understanding of modern systems operating end to end
  • Strong system-design and architecture capability with ability to implement and validate decisions
  • Broad experience across frontend, backend, APIs, databases, automated testing, CI/CD, containers and cloud platforms
  • Experience diagnosing issues across application, infrastructure and runtime boundaries
  • Ability to master unfamiliar tools and platforms quickly
  • Strong judgement across security, performance, reliability, maintainability, observability and cost
  • Experience leading and mentoring engineers while remaining technically credible
  • Excellent communication and client-facing skills
  • Experience working in government, regulated or complex enterprise environments
  • Eligibility and willingness to obtain SC clearance
  • Practical experience building applications using large language models or other modern AI models
  • Experience designing agentic workflows involving tool use, structured outputs and external system integration
  • Experience with retrieval-augmented generation, embeddings, grounding and context management
  • Experience with agent orchestration, state, memory, permissions, error recovery and human-in-the-loop controls
  • Experience evaluating quality, reliability, safety and measurable business outcomes
  • Experience with AI security, including prompt injection, data protection, access control and auditability
  • Experience with hosted, private, open-weight, sovereign or disconnected deployment patterns
  • Experience with AI-assisted software engineering and rigorous validation of generated code and designs
  • Experience with technologies such as Go, Java, C#, Python, JavaScript, TypeScript, React, AWS, Azure, Kubernetes, relational databases, event-driven systems, open-weight models, vector search or agent orchestration frameworks

Benefits

Comp & perks
  • Diversity, Equity & Inclusion commitment
  • Reasonable adjustments to the application and assessment process
  • Additional application support for care leavers
  • Opportunity to work on technically ambitious government and enterprise programmes
  • Opportunity to work across modern software engineering, cloud, AI and agentic AI
  • Opportunity to test new technologies and approaches
  • Influence over engineering standards, reusable patterns and technical strategy
  • Direct work with senior client stakeholders
  • Mentoring and team-building opportunities
  • Meaningful impact across major government and enterprise services