Lead Full Stack Engineer

Who you are

• Strong proficiency with JavaScript & TypeScript and back-end languages (.NET must, Node.js or Python preferred)
• Expertise in modern front-end frameworks (React, Vue, or Angular)
• Knowledge of component-based architecture, state-management patterns (Redux, Zustand, Vuex, etc.)
• Experience building and consuming REST, GraphQL, streaming/event-driven APIs, and microservices
• Familiarity with modern build tools (Vite, Webpack, Babel) and CI/CD pipelines (GitHub Actions, GitLab, Azure DevOps, etc.)
• Experience with CSS frameworks (Tailwind, Bulma, MUI, Chakra)
• Strong understanding of automated testing (Jest, Cypress, Playwright)
• Solid grounding in accessibility (WCAG), security best practices, observability, and performance tuning
• Experience with cloud environments (AWS, Azure, or GCP)
• Experience working with Salesforce
• Experience leading technical decision-making and mentoring experienced engineers
• Exposure to agentic AI, data-driven UI architectures, or AI-powered developer tools (Cursor, Claude Code, Copilot)
• Experience with design systems, component libraries, or Storybook
• Familiarity with programmable networks, observability tooling, or network automation concepts
• Understanding of advanced security practices (CSP, threat modeling, RBAC patterns, dependency scanning)
• Experience in distributed systems or event-driven architectures
• You treat the product as your own and prioritize long-term stability over short-term "hacks"
• Code-first and automation-first approach to solving problems
• You are eager to work across the full stack and stay curious about the evolving tech landscape

What the job involves

• As a Lead Engineer within our new Digital Office, you will play a critical role in accelerating Expereo’s transformation through the Single-Threaded Owner (STO) model. Operating within either the Commercial XP or In-Life XP STO, you will join a full-stack, outcome-driven squad focused on delivering intuitive, performant, scalable digital experiences across the Expereo customer journey
• You will design and build modern front-end and back-end applications, mentor engineers, shape engineering best practices, and contribute to a truly programmable, automated digital platform. This role is ideal for engineers who thrive in high-impact, cross-functional environments and enjoy building elegant user experiences backed by robust, scalable distributed systems
• Lead the design and maintenance of scalable front-end applications (React, Vue, Angular) and back-end services (Node.js, Python, or similar), creating reference implementations and documentation for the team to follow
• Develop reusable UI components, design systems, shared libraries, and internal service frameworks
• Build and integrate APIs (REST, GraphQL, event-driven and microservices architectures)
• Ensure applications meet the highest standards of performance, security, accessibility, and reliability
• Lead automated testing across unit, integration, contract, and end-to-end layers
• Implement observability in both front-end and back-end systems, including logging, metrics, tracing, and alerting
• Champion reliability engineering practices and performance optimization
• Contribute to and evolve CI/CD pipelines, build tooling, infrastructure automation, and quality gates
• Drive engineering standardization across STOs, including coding guidelines, architectural patterns, and platform abstractions
• Lead initiatives that reduce friction, improve developer experience, and accelerate delivery cycles
• Partner with designers, architects, product managers, and engineers to ensure the technical direction aligns with long-term platform goals
• Partner directly with designers and your team’s Product Manager to evaluate the technical feasibility of new capabilities and provide effort estimations
• Foster a high-ownership engineering culture through active mentorship and by setting the bar for code quality and testing layers
• Lead explorations of new technologies, including agentic AI enablement, data-driven UX, programmable networks, and developer tooling
• Contribute to reference implementations, architectural blueprints, and engineering guardrails
• Identify technical risks early in the product lifecycle and propose pragmatic solutions to mitigate them