Isabelle Marchand
isabelle.marchand@email.fr | +33 6 47 82 91 35 | 42 Rue de la Fontaine, 75010 Paris | https://github.com/isabelle-marchand

PROFESSIONAL SUMMARY

Results-driven Lead Software Engineer with 10+ years of experience architecting and delivering scalable web applications and AI-powered solutions. Proven track record of leading cross-functional engineering teams, driving technical strategy, and implementing modern full-stack technologies. Expertise in building high-performance systems using JavaScript ecosystems, Python, and cloud-native architectures.

PROFESSIONAL EXPERIENCE

Lead Software Engineer
TechVision Solutions | Lyon, Rhône-Alpes
March 2021 - Present

• Lead a team of 8 engineers in designing and implementing microservices architecture serving 2M+ daily active users, resulting in 40% improvement in system reliability
• Architect and oversee development of AI-powered features using Python and TensorFlow, increasing user engagement by 35%
• Drive technical roadmap and technology stack decisions, successfully migrating legacy Ruby applications to modern Node.js and TypeScript infrastructure
• Establish engineering best practices including code review standards, CI/CD pipelines, and automated testing frameworks, reducing production incidents by 60%
• Mentor junior and mid-level engineers through pair programming, technical design reviews, and career development planning
• Collaborate with product management and design teams to translate business requirements into scalable technical solutions

Senior Software Engineer
Nexus Digital | Toulouse, Occitanie
June 2018 - February 2021

• Developed and maintained full-stack applications using React, Node.js, and PostgreSQL, supporting critical business operations for enterprise clients
• Designed and implemented RESTful APIs and GraphQL endpoints handling 50K+ requests per minute with 99.9% uptime
• Led migration of monolithic application to microservices architecture, improving deployment frequency from monthly to daily releases
• Optimized database queries and indexing strategies in PostgreSQL, reducing average response time by 55%
• Collaborated with DevOps team to containerize applications using Docker and orchestrate with Kubernetes

Software Engineer
CloudFrame Technologies | Bordeaux, Nouvelle-Aquitaine
January 2016 - May 2018

• Built responsive web applications using JavaScript, React, and Ruby on Rails for B2B SaaS platform
• Implemented real-time data synchronization features using WebSockets and message queues
• Developed automated testing suites achieving 85% code coverage using Jest and RSpec
• Participated in agile development processes including sprint planning, daily standups, and retrospectives
• Contributed to open-source projects and internal tooling to improve developer productivity

Junior Software Developer
DevStart Innovations | Nantes, Pays de la Loire
July 2014 - December 2015

• Developed web application features using JavaScript, HTML/CSS, and backend APIs
• Fixed bugs and implemented enhancements based on user feedback and QA testing
• Participated in code reviews and learned software engineering best practices from senior team members
• Collaborated with cross-functional teams to deliver features on schedule

TECHNICAL SKILLS

Programming Languages: JavaScript, TypeScript, Python, Ruby, SQL
Frontend Technologies: React, HTML5, CSS3, Redux, Next.js
Backend Technologies: Node.js, Express, Ruby on Rails, RESTful APIs, GraphQL
Databases: PostgreSQL, MongoDB, Redis
AI/ML: TensorFlow, PyTorch, Natural Language Processing, Machine Learning pipelines
Tools & Platforms: Git, Docker, Kubernetes, AWS, Jenkins, CI/CD, Agile/Scrum
Other: System Architecture, Microservices, Performance Optimization, Team Leadership

EDUCATION

Master of Science in Computer Science
Université Pierre et Marie Curie | Paris, Île-de-France
Graduated: May 2014

Bachelor of Science in Computer Engineering
École Polytechnique de Marseille | Marseille, Provence-Alpes-Côte d'Azur
Graduated: May 2012

CERTIFICATIONS

AWS Certified Solutions Architect - Associate
Certified Scrum Master (CSM)

PROJECTS & ACHIEVEMENTS

• Led development of AI-powered recommendation engine that increased conversion rates by 28%
• Open-source contributor to popular JavaScript libraries with 500+ GitHub stars
• Speaker at regional tech conferences on topics including microservices architecture and AI integration
• Established engineering mentorship program that improved team retention by 45%