Overview

Joined BFA (Beauty For All Industries) as a DevOps Engineer, managing infrastructure for one of the largest beauty subscription e-commerce platforms. Supported 40 million concurrent users and led a major database migration from PostgreSQL to MongoDB.

Key Responsibilities

Infrastructure Management

  • Managed infrastructure supporting 40M concurrent users
  • Built and maintained Kubernetes clusters
  • Implemented auto-scaling for peak traffic periods
  • Designed disaster recovery and backup strategies

Database Migration

  • Led PostgreSQL to MongoDB migration project
  • Planned zero-downtime migration strategy
  • Implemented data synchronization pipelines
  • Optimized MongoDB queries for performance

DevOps Pipelines

  • Built CI/CD pipelines for microservices
  • Implemented infrastructure as code with Terraform
  • Set up monitoring and alerting systems
  • Created developer tooling and workflows

Technical Challenges

Scale Management

BFA operated at massive scale:

  • 40 million concurrent users during peak events
  • Thousands of transactions per second
  • Petabytes of product and user data
  • Global content delivery requirements

Database Migration

The PostgreSQL to MongoDB migration was one of the most complex projects:

  • Zero downtime requirement
  • Data consistency validation
  • Query optimization for document structure
  • Gradual rollout with rollback capability

High Availability

  • Multi-region deployments
  • Database replication and failover
  • CDN integration for static assets
  • Real-time monitoring and alerting

Technologies

  • Cloud: AWS (EKS, RDS, S3, CloudFront, Route53)
  • Containers: Docker, Kubernetes, Helm
  • IaC: Terraform, Ansible
  • Databases: PostgreSQL, MongoDB, Redis, Elasticsearch
  • Monitoring: Datadog, PagerDuty, CloudWatch
  • CI/CD: Jenkins, GitLab CI, ArgoCD

Key Achievements

40M User Scale

  • Successfully handled 40M concurrent users
  • Achieved 99.99% uptime during peak events
  • Reduced infrastructure costs by 30%

Database Migration

  • Completed zero-downtime PostgreSQL to MongoDB migration
  • Improved query performance by 40%
  • Reduced database operational costs
  • Enabled horizontal scaling of data layer

Learnings

Working at BFA taught me:

  • Scale Operations: Managing infrastructure at massive scale
  • Migration Strategy: Planning and executing major data migrations
  • Cost Optimization: Balancing performance with infrastructure costs
  • Team Coordination: Working with engineering teams during transitions

Transition

After BFA, moved into blockchain consulting with Dcycle and later founded Euler Tools, bringing DevOps best practices to Web3 infrastructure.