# Julien DeFrance

> Principal Software Engineer - Ruby on Rails Developer and Cloud Architect - AWS Certified (Cloud Practitioner, AI Practitioner, Solutions Architect - Associate)

Location: San Francisco, California, United States
Profile: https://flows.cv/juliendefrance

A pragmatic Engineer based in San Francisco, with a bias for action, strong sense of ownership, a taste for well-written code and well-architected, scalable, reliable software.

✓ Driven and dedicated, with excellent communication skills, interacting with all departments of the organization, partners, vendors, customers... 
✓ Able to provide expertise, execute, delegate, throughout all stages of the software development life cycle, from requirements gathering, analysis and planning to delivery.   
✓ Recognized for his ability to hire, build & operate teams of highly skilled and motivated engineers, and his involvement in training, career-building & mentorship
✓ Lead diverse and cross-functional web, mobile, infrastructure teams
✓ Defined and prioritized technology roadmap, ensuring balance with product and business needs
✓ Eliminated technical debt and ensured deprecation/migration out of/complete phase-out of legacy systems
✓ Built large/scalable/distributed, well-architected systems and applications from scratch using micro-services and bleeding-edge technologies such as offered by the AWS Cloud
✓ Drove SmartZip Analytics' Cloud transformation (initial analysis and execution), full revamp of the SmartTargeting Platform, and countless technologies & vendors adoptions
✓ An advocate for innovation, experimentation, learning and development culture

My areas of interest and expertise include:

✓ Ruby on Rails, Rails API, Relational and NoSQL Databases
✓ Amazon Web Services / Cloud Computing / Infrastructure
✓ Project Management, Leadership, Mentorship
✓ Operational Excellence, Scalability, Reliability, Performance & Cost-Efficiency, SRE
✓ Systems Architecture / UML / LucidChart
✓ Docker / Kubernetes / ECS / EKS / Fargate
✓ Serverless, Infrastructure as Code / Lambda / SAM
✓ Machine Learning, Deep Learning, AI, SageMaker, Generative AI, Bedrock...

## Education
### Diplome d'Ingénieur in Informatique (IT/Software development)
Polytech Tours

### Exchange Semester in Software Engineering
Lodz University of Technology

### DUT in Informatique (IT/Software development)
IUT de Lens

### BTS in Informatique de Gestion
Lycée Baudimont Saint-Charles


## Contact & Social
- LinkedIn: https://linkedin.com/in/juliendefrance

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Source: https://flows.cv/juliendefrance
JSON Resume: https://flows.cv/juliendefrance/resume.json
Last updated: 2026-04-12