Robin Tang

Skills Profile

Go

Python

AWS & GCP

Kubernetes

Bigtable

DynamoDB

Java

SQL, NoSQL

Work Experience

• Worked with Head of Engineering and CTO on scaling existing services and new product launches
• Worked with product and engineering to deploy incubating ideas like IVR proxy

• Led Marketing Infrastructure 2019-2020
• Led Seller Conversion and Seller Growth 2020-2021
• Leading the Consumer Organization 2021-Present


• Reduced Opendoor offer creation by 12 seconds and increased view rate from 75 -> 92%
• Identified and fixed the Offer data model to increase accuracy by 25% from 70% -> 95%
• Identified and optimized Opendoor's Offer Refresh pipeline and 2x'ed contracts in 2021
• Designed architecture to bypass adblockers and increase metrics visibility by 28%
• Stood up a Consumer Platform team to build product tooling for the org
• Unified customer data model
• Unified authentication and access controls
• Introduced best practices around telementary, autoscaling and gRPC
• Added K8 HPA and custom metrics such that every team can enable autoscaling (This led us to be able to autoscale by 30x during spikes around IPO and large announcements)
• Added Datadog APM to all Opendoor services
• Added version control, baseline monitors and dashboards to every service within Consumer
• Added the ability to serve gRPC from our Ruby on Rails monolith
• Designed server-side paid marketing pipeline as Opendoor has outgrown Google Tag Manager

• Product #1: Outbound by Zendesk (Connect)
• Part of the original Outbound team (1 of 5), working on Outbound by Zendesk.
• As the only full-time engineer on Outbound, on-boarding and transitioning ownership of service to 16+ engineers
• Automation of our Infrastructure with Terraform
• Cloud consolidation: moved AWS + DigitalOcean + Azure into GCP
• Migrated 200+ TB Bigtable from SSD to HDD to save $27,000+/month
• Optimized network by using private subnets to talk to managed services on GCP. Saved over $10k a month
• Product #2: Sunshine, Zendesk's CRM
• Led the Zendesk Sunshine engineering team to stitch all Zendesk products together for upmarket initiative
• Ingestion pipeline for all internal and external integrations (REST API and gRPC w/ TLS)
• Design & implementation of Event and User persistence layer for low latency and high writes
• Design & implementation of proxy services (Envoy) to allow our regional service to be available to all Zendesk accounts
• Designed migration scripts on EMR with Spark for DynamoDB (40m items copied in less than 30 min)
• Interviewed and hired 9 engineers
• Designed and filed 3 patents
• Deterministic way to rank events based on occurrence, relevancy and importance
• Segmentation of users and events to provide actionable insights for Ecommerce
• Maintaining time-based sessions to facilitate dynamic segmentation of users in an ecommerce system

• Worked on "User Search and Journey", a way for customers to see all of their users data
  • The ability to search over any of the user's traits, actions that they have taken (not taken)
  • Powerful feature, that can search millions of users in seconds.
  • To see it in action, and to read more click here
• Worked on Server Infrastructure
  • Setting up and maintaining monitors and pagers
  • Managing 3 MongoDB clusters
  • Set up the first automation deployment (previously had to SSH into every worker)
• Ownership of Android and iOS SDK

• Ownership and maintenance of Practice Management Software (PMS) which integrates DoctorBase with 17 other software applications
• Led code reviews for production deployment
• Training fellow team members and customer success
• Developing Integration test framework
• Worked on the technical transition from DoctorBase to Kareo

Education