Backend-focused engineer with deep experience in Rails API design, PostgreSQL, and distributed systems. I care about correctness over cleverness — well-tested, maintainable code that runs in production without surprises.
| Layer | Tools |
|---|---|
| ⚙️ Backend | Ruby · Rails · Go · Node.js · Python · GraphQL · REST · gRPC · Sinatra · Grape · Express · FastAPI |
| 🎨 Frontend | React · TypeScript · Redux · Angular · Ember · Vue · Next.js · Tailwind · Sass · Bootstrap · Webpack · Vite · Babel |
| 🗄️ Databases | PostgreSQL · MySQL · MongoDB · Redis · Elasticsearch · Cassandra · SQLite · MariaDB · DynamoDB · Firebase · Oracle · SQL Server |
| ☁️ Cloud & Infra | AWS (EC2 · S3 · RDS · Lambda · ECS · EKS · SQS · SNS · CloudFront · IAM) · GCP · Azure · Heroku · Fly.io |
| 🐳 DevOps | Docker · Kubernetes · Terraform · Ansible · Nginx · Linux · Bash · Vagrant |
| 📨 Messaging & Jobs | Kafka · Sidekiq · RabbitMQ · SQS · ActionCable · ActiveJob · Delayed Job |
| 🔄 CI/CD | GitHub Actions · CircleCI · Jenkins · Travis CI · GitLab CI · Bitbucket Pipelines |
| 🧪 Testing | RSpec · Minitest · Capybara · Jest · Cypress · Selenium · Mocha · factory_bot · WebMock · VCR |
| 📊 Observability | Datadog · New Relic · Sentry · Grafana · Prometheus · ELK Stack · PagerDuty · Honeybadger |
| 🔐 Security | OAuth 2.0 · JWT · SSL/TLS · Devise · Brakeman · OWASP · bcrypt · Pundit · CanCanCan |
| 🔗 APIs & Integrations | Stripe · Twilio · SendGrid · Algolia · Zapier · Salesforce · HubSpot · Anthropic · OpenAI |
| 🎨 Design & Collab | Figma · Invision · Jira · Linear · Notion · Confluence · Postman · Insomnia |
| 📦 Other | GraphQL · gRPC · Websockets · Server-Sent Events · React Native · Electron · TensorFlow |
- 🔥 High-throughput APIs — Designed and maintained Rails APIs serving millions of requests/day with PostgreSQL query optimization, Redis caching, and Sidekiq background pipelines
- ⚡ Real-time features — WebSocket systems with ActionCable and Kafka for event-driven architectures and live dashboards
- 🔀 Platform migrations — Led monolith-to-microservices migrations with zero-downtime deployments and blue-green strategies
- 🔐 Auth & security — Implemented OAuth 2.0, JWT, role-based access control with Pundit, and passed SOC 2 audits
- 💳 Payments & billing — Stripe subscriptions, metered billing, webhook handling, and reconciliation pipelines
- 🤖 LLM integration — Production API integrations with Anthropic Claude and OpenAI, including prompt engineering, streaming, and cost-aware model selection
- 👥 Team leadership — Mentored engineers across all levels, established PR review standards, and drove testing culture adoption
- 📱 Cross-platform — Built companion mobile apps with React Native and web apps with Next.js on shared Rails API backends
- 👀 Open to senior backend or full-stack roles at product companies with strong engineering culture
- ✍️ Writing about Rails and backend architecture on Medium
- 📚 Deepening AWS expertise (Solutions Architect track)
📧 kenneth1870@hotmail.com
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🚴 Road cycling