My Experience

From Paris to Taipei to San Francisco — 6 years building backends and cloud infra

Professional Experience

Backend Tech Lead (GERMEN/POLYSEME)

SprintMob (Freelance)

Aug 2024 — Present

Paris, France

Existing backend to redesign as full AWS serverless. 5 backend engineers to structure.

  • Backend stabilized and cleaned up — easier to ship new features
  • Complete test pipeline reducing regressions
  • Reliable CI/CD → faster deployments
  • Better DX — team spends time coding, not fighting tooling
Node.jsTypeScriptAWS ServerlessTerraformPostmanGitHub/GitLab CI

Backend & Infrastructure Lead (SALVA/Cagn'Up)

SprintMob (Freelance)

Aug — Dec 2024

Paris, France

Built the backend and AWS infrastructure from scratch for SALVA/Cagn'Up product.

  • Complete backend delivered from scratch
  • Modular and maintainable AWS infra via Terraform/Terragrunt
  • Clean dev environment → fast onboarding
NestJSNode.jsPostgreSQLAWSTerraformTerragrunt

Principal Engineer

Infodeck.io (Freelance)

Jun — Nov 2024

Paris, France

The platform had stability and code quality issues. I cleaned up processes and reviews.

  • Reduced critical incidents
  • Improved code quality via structured code reviews
  • Clear eng process — team knows who does what and how
AWSNode.jsCI/CDMonitoring

DevOps Engineer

UnaBiz (CDI)

Apr 2021 — Jun 2024

Taipei, Taiwan

High-traffic IoT platform — 8M+ requests/day. Cloud infra had to handle the load and stay maintainable.

  • -50% CloudFormation deployment time
  • -30% AWS costs via FinOps
  • Resilient architecture handling millions of events/day
  • Tightened security, passed IEC 27001 audit
AWS LambdaAPI GatewayDynamoDBS3CloudFormationGCPTerraformFinOps

Cloud Engineer

RAVACAN (CDI)

Mar 2020 — Mar 2023

San Francisco, USA

Cut AWS costs and set up dashboards so the team could actually see what was happening in prod.

  • -10% AWS costs
  • More stable and maintainable infrastructure
  • Automated processes → fewer errors
AWSTerraformTerragruntMonitoring

Backend Engineer

Mayday (CDI)

Jul 2020 — Mar 2021

Paris, France

Backend dev and Heroku-to-Azure migration for a fast-growing SaaS platform.

  • Successful Heroku → Azure cloud migration
  • Automated CI/CD → fast deployments
  • Unified multi-application authentication
Node.jsAzureTerraformCI/CD

Technical Skills

AWS Serverless

LambdaAPI GatewayDynamoDBS3IAMCloudFormationCloudWatchX-Ray

Backend

Node.jsTypeScriptNestJSREST APIsPostgreSQL

Infrastructure as Code

TerraformTerragruntAWS CDK

DevOps

CI/CDGitHub ActionsGitLab CIDockerMonitoring

Cloud

AWSGCPAzureFinOps

Leadership

Architecture decisionsCode reviewsMentoringDX improvement

Education

EPITECH — European Institute of Technology

Master's degree, Computer Science (2016 — 2021)

Feng Chia University

MCA, Computer Science — Taipei, Taiwan (2019 — 2020)

Certifications & Awards

AWS Certified Solutions Architect – Associate
Startup Weekend Pau — 3rd place
Hackathon Warner — Innovation Prize
Artificial Intelligence Certification

See my work

Detailed client case studies and SaaS products I build.

View projects