nyefan.org

About

Skills

Rust PostgreSQL Kubernetes AWS / Azure / GCP Developer Experience
Java Redis / Valkey EKS / kOps / AKS / GKE Terraform / Crossplane Incident Management
Python DynamoDB Helm / Kustomize / Flux OpenTelemetry / Observability Platform Engineering
Bash Cassandra Docker / containerd CircleCI / GitHub Actions / Jenkins Site Reliability

Experience

Staff Platform Engineer

ZenGRC
May 2022 – Present
  • Attained FedRAMP Moderate authorization by rebuilding CI/CD, processes, and service and cloud architectures
  • Reduced logging, monitoring, and alerting costs by 95% by replacing Datadog with Fluent, Prometheus, OpenSearch, Jaeger, and Grafana
  • Increased deployment velocity by 630% by improving developer confidence in CI and testing
  • Led single-tenant to multi-tenant migration via a strangler-fig rearchitecture, reducing production resource usage by 50% across the board
  • Created and led the release management working group
  • Authored and implemented a trunk-based, feature-flagged, decentralized release process and then disbanded the release management working group
  • Advised on and reviewed architectural decisions across all teams to ensure product stability and maintainability
  • Established on-prem and bring-your-own-cloud product versions
  • Executed a top-level domain surrender and multiple domain migrations with no downtime
  • Led adoption of modern Kubernetes and AWS tooling, including Helm, Crossplane, Terraform, and GitOps
  • Mentored junior and senior engineers

Lead Engineer

all.health
April 2021 – April 2022
  • Built a developer-managed ephemeral environment platform, allowing each developer to work on their own versioned copy of the business platform
  • Architected, prototyped, and built core SaaS platform subsystems: authn/authz, notifications, actions, zero-trust service-to-service communication, user administration, data ingest, analytics ingest and aggregation, and monitoring and alerting using Java, Spring, Jooby, Rust, Rocket, Kafka, PostgreSQL, Druid, and Kubernetes

Senior DevOps Engineer

Lifesize
February 2019 – April 2021
  • Optimized our Kubernetes environment and tooling, enabling a 20x scale-up over 3 weeks in response to COVID-19
  • Increased deployment velocity by 212% by condensing 41 custom Jenkins deployment scripts into a set of composable CircleCI jobs and reducing the deployment error rate from 61% to 3% (as measured after 8 months)
  • Drove toward a complete Infrastructure as Code implementation of our AWS and Kubernetes environments using Terraform and Helm
  • Led adoption of AWS, Docker, and Kubernetes best practices across acquired companies’ cloud resources
  • Centralized Helm and CloudFormation templates into importable libraries accessed and applied via CI/CD
  • Implemented automated error rate anomaly detection and rollback in production service deployments
  • Reduced incident time to detection and time to resolution by implementing metric and log monitors with Prometheus, Grafana, Alertmanager, CloudWatch, and OpsGenie

Software Engineer

Spanning Cloud Apps
July 2018 – January 2019
  • Developed Java and TypeScript services for managing data at petabyte scale

Software Engineer I

Spectrum (via Nuovo Solutions)
January 2017 – June 2018
  • Developed a Helm- and Terraform-based Kubernetes bootstrapping and deployment tool for creating and maintaining a versioned infrastructure and service mesh with seamless rollback capability
  • Implemented OAuth-based authn/authz infrastructure
  • Developed, containerized, and deployed Java microservices
  • Converted stateful cron jobs to stateless event-stream services

Researcher

University of Kansas
November 2011 – May 2014
  • Optimized chemical vapor deposition (CVD) growth and polymer transfer techniques for graphene and other 2D materials
  • Designed and constructed Hall effect and quantum Hall effect devices and transistors from various 2D materials
  • Created an electron-beam lithography process for etching trace circuits into CVD graphene

Space Sciences Research Intern

NASA Goddard
August 2012 – December 2012
  • Designed and constructed a prototype 300 millikelvin refrigerator for the Cosmic Large Angular Scale Surveyor (CLASS) project
  • Automated the crystal growth process, removing the need for 24/7 human maintenance during salt pill formation
  • Integrated a technique used to spin up MRI machines to reduce the amount of high-Tc superconducting wire required
  • Reduced the projected cost of the system by ~$8,000 per unit