Lead Full-Stack Engineer — AI Avatar Platform

Genies; Pays de la Loire; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Equity

Health insurance

Unlimited PTO

Parental leave

Hybrid work structure

Wellness reimbursement

Job summary

Genies is seeking a contract Lead Full Stack Engineer to guide architectural direction for avatar-driven products. You’ll mentor engineers while contributing hands-on work across frontend and backend, using React, Next.js, TypeScript, Node.js, and Go.

You’ll collaborate with product and design to deliver scalable, AI-enabled web solutions in a fast-paced environment. You will drive engineering best practices, security, and observability, balancing leadership with hands-on coding to ship complex

Qualifications

• 7+ years of full-stack development experience with leadership or mentoring roles.
• Bachelor's degree in Computer Science or related field.
• Proven ability to design and scale distributed, high-performance web apps.
• Expertise with React, TypeScript/JavaScript, Node.js, Next.js.
• Strong frontend usability focus and design sensibilities.
• Strong backend with Go or Python; databases including NoSQL/SQL.
• RESTful and GraphQL APIs, event-driven architectures knowledge.
• Security fundamentals: OWASP, OAuth 2.0; AWS + CI/CD experience.
• AI workflow maturity and ability to apply AI tools effectively.
• Excellent communication; capable of leading technical and non-technical discussions.

Responsibilities

• Define architectural vision for full-stack systems and scalable frameworks.
• Mentor and coach engineers; perform code reviews and provide feedback.
• Contribute hands-on to code with emphasis on reliability and performance.
• Develop intuitive frontend UI with high standards and robust APIs.
• Collaborate with product, design, and other teams to plan deliverables.
• Drive developer velocity, observability, and security practices.

Skills

React

TypeScript/JavaScript

Go

Python

REST/GraphQL

AWS

CI/CD

Distributed systems

Communication

Education

Bachelor's degree in Computer Science

Tools

AWS

CI/CD pipelines

GraphQL

Job description

Genies is seeking a contract Lead Full Stack Engineer to guide architectural direction for avatar-driven products. You’ll mentor engineers while contributing hands-on work across frontend and backend, using React, Next.js, TypeScript, Node.js, and Go.

You’ll collaborate with product and design to deliver scalable, AI-enabled web solutions in a fast-paced environment. You will drive engineering best practices, security, and observability, balancing leadership with hands-on coding to ship complex