Senior Full Stack Engineer React - AI-Augmented Engineering

Company description Publicis Sapient is a digital transformation partner helping established organizations get to their future, digitally enabled state, both in the way they work and the way they serve their customers. We help unlock value through a start-up mindset and modern methods, fusing strategy, consulting, and customer experience with agile engineering and problem-solving creativity. United by our core values and our purpose of helping people thrive in the brave pursuit of next, our 20,000+ people in 53 offices around the world combine experience across technology, data sciences, consulting, and customer obsession to accelerate our clients’ businesses through designing the products and services their customers truly value. Overview As a Senior Full‑Stack Engineer with a React‑first focus, you will help clients design and build enterprise‑grade digital solutions using modern engineering practices and AI‑assisted development tools. This role is centered on strong frontend ownership with React, while working closely with backend systems primarily built in .NET (C#). Experience with Node.js or Java is also welcome, as long as you are deeply solid in React and comfortable applying AI‑augmented engineering practices in real production environments. You will use tools such as GitHub Copilot, Claude Code, Codex, Cursor, or Windsurf to accelerate development responsibly—maintaining high standards for code quality, security, and long‑term maintainability. Responsibilities Your Impact Design, build, and maintain scalable, secure, and resilient enterprise applications with React as the primary frontend technology. Develop and integrate backend APIs and services, working mainly with .NET (C#) Apply AI‑assisted coding tools to improve productivity while ensuring correctness, governance, and maintainable solutions. Integrate internal and external systems using secure APIs, MCP‑style integration patterns, and asynchronous communication models. Review code and enforce best practices in AI‑augmented engineering workflows, preventing technical debt and unsafe implementations. Collaborate with cross‑functional teams to translate complex business requirements into robust, production‑ready solutions. Promote responsible and disciplined use of AI across the software development lifecycle. Qualifications Skills & Experience 8+ years of professional experience as a Full‑Stack Engineer working on production systems. Strong, hands‑on expertise in React (JavaScript/TypeScript) as your primary frontend framework. Professional backend experience using .NET (C#), Node.js, or Java in enterprise environments. Solid experience designing and integrating RESTful and/or GraphQL APIs. Strong foundation in software engineering principles, system design, and scalable architectures. Practical experience using AI‑assisted development tools (GitHub Copilot, Claude Code, Codex, Cursor, Windsurf) with a clear understanding of their limitations. Experience with CI/CD pipelines, containerization (Docker/Kubernetes), and cloud platforms such as Azure, AWS, or GCP. Ability to critically review AI‑generated code, write effective prompts, and prevent low‑quality or insecure outcomes. Solid understanding of clean architecture, testing strategies, and enterprise code quality standards. Set Yourself Apart With Experience working across multiple backend stacks in complex enterprise systems. Strong understanding of responsible AI practices, prompt engineering, and guardrails for code generation. Experience building cloud‑native, modular, or microservices‑based architectures. Experience with scalable frontend architectures such as design systems or micro‑frontends. Familiarity with AI‑native development patterns, including MCP‑based workflows for extensibility and integration. Contributions to open‑source projects or internal developer productivity tools. Additional information An inclusive workplace that promotes diversity and collaboration. Access to ongoing learning and development opportunities. Competitive compensation and benefits package. Flexibility to support work-life balance. Comprehensive health benefits for you and your family. Wellness program and employee assistance. As part of our dedication to an inclusive and diverse workforce, Publicis Sapient is committed to Equal Employment Opportunity without regard for race, color, national origin, ethnicity, gender, protected veteran status, disability, sexual orientation, gender identity, or religion. We are also committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or an accommodation due to a disability, you may contact us at [email protected]

Skills & Experience 8+ years of professional experience as a Full‑Stack Engineer working on production systems. Strong, hands‑on expertise in React (JavaScript/TypeScript) as your primary frontend framework. Professional backend experience using .NET (C#), Node.js, or Java in enterprise environments. Solid experience designing and integrating RESTful and/or GraphQL APIs. Strong foundation in software engineering principles, system design, and scalable architectures. Practical experience using AI‑assisted development tools (GitHub Copilot, Claude Code, Codex, Cursor, Windsurf) with a clear understanding of their limitations. Experience with CI/CD pipelines, containerization (Docker/Kubernetes), and cloud platforms such as Azure, AWS, or GCP. Ability to critically review AI‑generated code, write effective prompts, and prevent low‑quality or insecure outcomes. Solid understanding of clean architecture, testing strategies, and enterprise code quality standards. Set Yourself Apart With Experience working across multiple backend stacks in complex enterprise systems. Strong understanding of responsible AI practices, prompt engineering, and guardrails for code generation. Experience building cloud‑native, modular, or microservices‑based architectures. Experience with scalable frontend architectures such as design systems or micro‑frontends. Familiarity with AI‑native development patterns, including MCP‑based workflows for extensibility and integration. Contributions to open‑source projects or internal developer productivity tools.

Your Impact Design, build, and maintain scalable, secure, and resilient enterprise applications with React as the primary frontend technology. Develop and integrate backend APIs and services, working mainly with .NET (C#) Apply AI‑assisted coding tools to improve productivity while ensuring correctness, governance, and maintainable solutions. Integrate internal and external systems using secure APIs, MCP‑style integration patterns, and asynchronous communication models. Review code and enforce best practices in AI‑augmented engineering workflows, preventing technical debt and unsafe implementations. Collaborate with cross‑functional teams to translate complex business requirements into robust, production‑ready solutions. Promote responsible and disciplined use of AI across the software development lifecycle.