• Led backend architecture roadmap discussions for new distributed ledger platform offering.
• Improved existing ecosystem by implementing an observability stack, CI/CD pipeline, and other business automation.

Tech: AWS, Node.js, Typescript, React.js, RabbitMQ, MongoDB, CDK/Cloudformation, CircleCI, Grafana, Salesforce

• Built/extended a number of AWS Lambda based microservices to support mobile apps focused around intermittent fasting, healthy eating, exercise, and surrounding social features. Sample functionality: mobile device push notification registration/delivery, user management, file management, social circles/relationships, social feeds (posts, commenting, likes, images, etc), patient observations, content management, and more. Improved and optimized parts of the system as user count grew from 0 to millions.
• Led/maintained an effort to build an ecosystem of modules within the mobile apps that extended the apps' capabilities in a way that was more rapidly iterable (no app store release cycle). This ecosystem was used across two mobile apps both as standalone app functionality and as components of multiple other larger corporate/personal wellness oriented product offerings. Over a dozen contributors and 20+ modules built to date.
• Built an entire (99% of all back/front work) blood biomarker test ordering integration with a 3rd party vendor. Web based, but mobile friendly and integrated into existing mobile apps with some native components. Worked with the vendor to negotiate API contracts. This had three main use cases - lone users paying for tests, personal wellness users redeeming bundled tests they paid for during sign up, and corporate wellness users redeeming employer paid tests (subsidized). This also involved new payment/auth flows, integration with other internal billing services, and extending native app functionality for seamless integration with web based modules.
• Misc corporate wellness offering contributions: self-service billing, custom corporate billing models, significant scalability/monitoring improvements, billing system scalability improvements.

Tech: many AWS services with an emphasis on serverless/managed, Nodes.js, Typescript, React, GraphQL, REST, Jenkins, Terraform, ETL (Glue/Spark/Athena/python ecosystem)

• Maintained an XMPP based chat service used for customer support and internal communications. (node.js)
• Investigated and resolved live production issues while on-call for the service. Number of peak concurrent users in production ranged from 100s to more than 12,000 in four different regions.
• Improved deployment automation using AWS Lamba and other tools to support graceful one click
deploys and auto scale-up based on user traffic.
• Migrated service over to being HIPAA compliant gracefully with no downtime (TLS, disk encryption, caching changes, etc)