Robert Charles
@robert
I am a full-stack engineer building scalable, secure web platforms.
United StatesWhat I'm looking for
I am a senior full-stack software engineer with 10 years' experience building scalable web applications across startups and high-growth tech companies.
At Oscar Health I collaborated in cross-functional teams to build secure, reliable healthcare platforms — improving frontend load times by 35% and backend performance by 30% while ensuring HIPAA compliance and delivering analytics dashboards.
At Robinhood I engineered the viral pre-launch referral system that helped build a waitlist of nearly 1 million users, implemented event-driven architectures processing 5M+ daily transactions at high reliability, and automated CI/CD to accelerate releases.
I work across modern JavaScript frameworks, Python, Java, Go and Ruby on Rails, and leverage cloud-native infrastructure, Kubernetes, Terraform and observability tooling. I focus on developer experience, clean architecture, mentorship, and leading end-to-end product features.
Experience
Work history, roles, and key accomplishments
Led development of scalable healthcare platforms serving thousands of users, improving frontend load times by 35% and reducing frontend defects by 30%. Optimized backend performance by 30%, implemented HIPAA-compliant security practices, and automated deployments on AWS EKS.
Engineered a viral pre-launch referral system that built a ~1M-user waitlist and reduced signup time to seconds, driving 25% user growth. Built and scaled microservices and event-driven systems processing 5M+ daily transactions at 99.8% reliability and cut deployment time by 25% via CI/CD automation.
Education
Degrees, certifications, and relevant coursework
California State University, Long Beach
Bachelor of Science, Computer Science
2011 - 2015
Completed a Bachelor of Science in Computer Science at California State University, Long Beach (2011–2015), focusing on software engineering and systems.
Tech stack
Software and tools used professionally
OpenAPI
Sidekiq
Apache Spark
D3.js
Chart.js
Highcharts
Microsoft Azure
Google Cloud Platform
DigitalOcean
GitHub
GitLab
Bitbucket
Kubernetes
Docker Compose
Cloudflare
AWS CodePipeline
Jenkins
CircleCI
GitHub Actions
Jenkins X
GitLab CI
NumPy
Pandas
DB
MySQL
PostgreSQL
MongoDB
SQLite
MariaDB
Cassandra
CouchDB
ReadMe.io
Gmail
Node.js
Django
Spring Boot
Ruby on Rails
Next.js
NestJS
Spring MVC
Tailwind CSS
Material-UI
Vuetify
three.js
Neo4j
Microsoft Teams
OpenCV
Redis
Terraform
AWS CloudFormation
Azure DevOps
styled-components
React
axios
Lodash
anime.js
JavaScript
Python
HTML5
Java
CSS 3
TensorFlow
PyTorch
scikit-learn
Keras
NLTK
Mapbox
Kafka
RabbitMQ
FastAPI
TypeORM
Grafana
Prometheus
SQLAlchemy
Datadog
Heroku
Apollo
Basecamp
GraphQL
Prisma
OData
Firebase
Socket.IO
gRPC
Elasticsearch
Spring Security
Serverless
Deepgram
Zustand
vuex
Vercel
Netlify
TypeScript
RSpec
pytest
JUnit
React Testing Library
OAuth2
Docker
WebRTC
Formik
uWSGI
NGINX
Apache HTTP Server
LiteSpeed
Gunicorn
Zapier
IFTTT
Toolkit
s3-lambda
Fomo
MobX
SQL
Octopus Deploy
Workato
SciPy
Hugging Face
Integromat
Playwright
ElevenLabs
Jotai
Availability
Location
United StatesAuthorized to work in
Salary expectations
Job categories
Skills
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