David Livingston Email & Phone Number

Memphis, Tn, Us

* Fullstack web development, particularly edge and BFF (backend for frontend) services* Designed systems that are infrastructure agnostic (run on-prem, at the edge, or in various clouds)* Developed a search recommendation system that aggregates multiple data sources including a parser for query correction / suggestions* Implemented observability in systems with unique requirements (e.g. air gapped)* Developed custom UI components (e.g. a hex viewer similar to Wireshark)* Developed microservices for auth, blob storage, configuration, jobs, and search* Developed custom OpenLayers visualizations: movement tracking with heat mapping, sensor coverage with polygonal approximation for unsupported shapes* Quickly acquired various certifications as required by specific engagements (e.g. Security+ for DoD 8570 IAT2)* NodeJS, React, AWS, Express, NestJS, TypeScript, Redis, Elasticsearch, MongoDB, Nginx, Docker, K8s, MinIO, OpenLayers

Birmingham, Alabama, United States

* Built React Micro Frontends and Node Edge Services (GraphQL) to migrate and replace a Ruby on Rails monolith* Introduced structured logging and distributed tracing* Implemented CI/CD including GraphQL runtime schema validation* Planned a cloud provider migration (AWS -> GCP)* NodeJS, NestJS, React, Apollo GraphQL, AWS

Foster City, California, United States

* Created a serverless prototype of the payments microservice.* Created a client side SDK which provides a consistent interface to multiple payment processors. This SDK is used by multiple customer facing, white label applications.* Created the admin UI for a payments microservice.* Contributed to our Kubernetes provisioning platform (auth and security improvements) and an IDE for configuring white-label software products.* Member of the API standards committee.* Designed Java to React UI migration strategy including transactional updates.* Limited work on Java / Spring microservices (e.g. a config microservice).* NodeJS, React, AWS, Express, TypeScript, JavaScript, Redux, DynamoDB, PostgresSQL, K8s, Docker

San Jose, California, United States

* Lead web development for white labelled, customer facing web apps (sales portals, customer self service portals)* Lead modernization effort for web apps (mostly migrating AngularJS to React / TypeScript / Redux and improving code quality through unit testing / static analysis). * Developed PCI compliant payments UI; primary point of contact for pen testing.* Hired, mentored, and managed web developers.* Lead developers weekly learning group.* React, AWS, TypeScript, JavaScript, AngularJS

Cleveland, Ohio, United States

* Migrated the UI for an ASP.NET application to a single page application (Knockout.js) as part of the modernization effort for a white labelled product.* That modernization drove new sales and increased revenues from six to seven figures.* Advocated for React and did POC work with server side rendering and AWS hosting.

Westfield Center, Ohio, United States

* Worked on a small team which maintained and enhanced 20+ internal applications (mostly Java web apps and message queue applications).* Developed the first JSON web services and single page applications at the company.* Flexed into Business Analyst (Predictive Analytics) and Project Management (Geocoding) roles.* Java, Javascript, Python* Various things I am no longer skilled with or very interested in: Sharepoint, KnockoutJS, Java Swing, JEE (JMS; Spring; JSF; JSP; JPA / Hibernate; JAX-WS, Struts)

Bs (With Honors), Computer Science

Master'S Degree, Computer Science

Bba, Finance (Minors In Economics And Philosophy)