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Alton Zheng

About

Detail

San Francisco, California, United States
Contact Alton regarding: 
work
Full-time jobs
Starting at USD7k/month
Flexible work
Starting at USD50/hour

Timeline

work
Job
school
Education

Résumé

Jobs verified_user 0% verified
  • Block
    Senior Backend Engineer
    Block
    Oct 2022 - Current (3 years 10 months)
    • Architected and delivered high-throughput Golang microservices supporting payments and commerce content ecosystems; scaled to handle billions of user and merchant events per day. • Designed gRPC APIs and GraphQL/JSON gateways using Go frameworks such as viper (config management), zap (structured logging), and testify (unit/integration testing), improving P99 latency by 35% and API reliability. • Migrated Node.js services to Golang + Kubernetes (AWS EKS), cutting infrastructure costs by 20% and improving horizontal scalability under peak loads. • Implemented internal platform services using FastAPI and Go, enabling rapid prototyping and reducing service development time for data and ML teams by 40%. • Optimized Redshift and Postgres analyt
  • S
    Senior Software Engineer - Content Platform
    Dec 2019 - Aug 2022 (2 years 9 months)
    • Owned backend Golang and Java content services powering over 20 content types such as articles, newsletters, live posts, and polls. • Developed lightweight FastAPI services for internal tooling and content-moderation workflows, integrating them with existing Golang/Java microservices. • Combined DNNs with SVM, KNN, and tree models using grid search and increased performance. • Implemented structured logging via zap and enhanced observability with OpenTelemetry + Prometheus across Azure and AWS clusters. • Designed and rolled out a schema evolution system (Avro/Protobuf) with zero downtime migration and strong backward compatibility. • Designed high-level architecture for content authorization, GraphQL gateways, and event pipelines; establ
  • S
    Senior Software Engineer - Publishing & Curation
    Dec 2017 - Dec 2019 (2 years 1 month)
    • Designed and launched the article publishing system serving millions of authors and readers daily. • Implemented Kafka to Flink real-time streaming pipelines to power instant content updates, author notifications, and analytics. • Drove GDPR/CCPA automation: deletion orchestration, data retention rules, and privacy-first content lifecycle. • Broke down a legacy Rails monolith into Golang and Java microservices; reduced build and deploy time from 40 minutes to less than 10 minutes. • Enhanced GraphQL federation for content rendering and author workflows, improving schema evolution safety and cutting cross-service query failures. • Developed schema linting and validation tooling for safe content format evolution across more than 100 interna
  • S
    Software Engineer
    Jul 2015 - Nov 2017 (2 years 5 months)
    • Built a content analytics pipeline to process over 500 million daily events; migrated batch ETL to Flink streaming jobs, reducing data delay from 24 hours to near real-time. • Designed hybrid multi-cloud deployments using Terraform across AWS and Azure. • Used Azure Key Vault and AWS KMS to enforce secure storage and cryptographic key management. • Optimized distributed caching systems (RocksDB, Redis) to decrease query latency from seconds to under 100 milliseconds. • Developed self-service React dashboards powered by Node.js backends, enabling content teams to track engagement metrics without infrastructure support. • Co-developed feature flags and an experimentation framework to enable rapid rollout and A/B testing.
  • S
    Software Engineering Intern
    May 2014 - Aug 2014 (4 months)
    • Designed and implemented internal Python and Golang automation tools to optimize data center configuration and workload placement, reducing deployment time and manual errors. • Built monitoring scripts to surface network and server health metrics, improving visibility and incident response speed for site reliability teams. • Contributed to infrastructure reliability by integrating tooling with LinkedIn’s large-scale production environment.
  • Yelp
    Software Engineer Intern
    Yelp
    May 2013 - Aug 2013 (4 months)
    • Revamped iOS search filtering UX and modernized Yelp’s mobile codebase; implemented a highly requested feature to let users sort results by “Most Reviewed.” • Built and optimized API endpoints in Python/Flask and integrated them with the mobile app to support new search filters and faster response times. • Worked closely with design and product teams to validate user experience improvements, contributing to a measurable increase in mobile engagement.
  • A
    Engineer Extern
    Astrid & Co.
    Jan 2012
    • Added new calendar integration features to Astrid’s Android to-do app, enabling event sync and reminders with Google Calendar. • Improved background sync and notification reliability with Java and Android SDK, enhancing app usability for thousands of daily active users. • Contributed bug fixes and UI polish to improve user retention and satisfaction.
Education verified_user 0% verified
  • University of California, Berkeley
    Bachelor of Electronic Engineering and Computer Science
    University of California, Berkeley
    Jan 2011 - Jan 2015 (4 years 1 month)
    Bachelor of Electronic Engineering and Computer Science