Senior Back-end Developer
2022 - 2022Scratch Engine LLC- Handled data engineering for an ML project learning to predict NFT prices.
- Worked with the ML engineer to locate data sources, like social media APIs, NFT, and crypto APIs, and to evaluate data quality.
- Built, deployed, and monitored the project's data pipeline (AWS Lambda functions writing to DynamoDB).
- Developed a detailed data inventory describing the data assets generated by the project.
- Architected and built the back-end services to support the project's web app in Node.js/TypeScript and Python.
Technologies: Back-end, Node.js, APIs, TypeScript, Amazon Web Services (AWS), Data Science, Amazon DynamoDB, Non-fungible Tokens (NFT), Python, AWS Lambda, Docker, ServerlessSoftware Expert
2017 - 2021Kudelski Security- Architected and built the Use Case Manager, an internal-facing web application used by Kudelski's MDR team to benchmark their threat detection capabilities against the MITRE ATT&CK framework.
- Wrote the code for much of Secure Blueprint, a SaaS web application for CISOs to assess, manage and report on their company’s cybersecurity program.
- Built a POC API to provide medical cannabis product recommendations as part of a blockchain-related venture. Utilized a Drools-based expert system meant to bootstrap data collection for future machine learning.
- Served as an alpha customer for Kudelski's internal DevOps platform and contributed to its design.
- Introduced the idea of database versioning to my team and converted our database deployment process to use Flyway.
- Served as a careful and detailed code reviewer with a good track record of catching bugs in review.
Technologies: Elasticsearch, TypeScript, Auth0, Kubernetes, Docker, Java, Web Development, Agile Software Development, IntelliJ, JavaScript, HTML, CSS, SQL, Python, Node.js, Go, MySQL, Redis, React, Spring, Git, MacOS, Guava, JUnit, Jira, Microservices Architecture, Full-stack Development, DevOps, Automated Testing, Full-stack, gRPC, Gradle, GitLab CI/CD, Code Review, Scrum, Apache Tomcat, PostgreSQL, Google Guava, REST APIs, Logback, Spring Boot, Docker Compose, Redux, Hibernate, Cypress, Prometheus, Flyway, Postman, Amazon Web Services (AWS), Integration Testing, Unit Testing, Multithreading, OAuth, Back-endSenior Software Developer
2016 - 2017ThoughtWorks- Worked on greenfield development of Java web APIs to be used by all customer-facing applications at a major airline.
- Influenced the decision to use a JWT-based client-side cache, which greatly simplified the API while maintaining performance and statelessness.
- Trained junior developers through pair programming.
Technologies: Java, Agile Software Development, IntelliJ, Spring, Git, MacOS, Guava, Automated Testing, Gradle, Scrum, REST APIs, Logback, Google Guava, Postman, Apache JMeter, Integration Testing, Unit Testing, Back-endSoftware Engineer
2015 - 2016DEVEXI (Toptal Client)- Wrote Java and SQL to execute retrospective longitudinal studies over a database of medical records and correlated environmental/socioeconomic data. Queries ran on AWS Redshift over billions of records.
- Sped up a central algorithm for matching cases to controls to run 50 times faster. Optimizations included re-representing a join table to be 10X smaller and reducing the size of the input by randomly sampling from the set of controls.
- Coded data perturbation and suppression algorithms to satisfy HIPAA de-identification requirements.
- Designed HTML emails for invoicing and built the service that generates and sends invoice emails.
Technologies: Dropwizard, Amazon Simple Email Service (SES), Redshift, PostgreSQL, Java, Web Development, IntelliJ, SQL, AngularJS, MacOS, Full-stack Development, Automated Testing, Full-stack, REST APIs, JavaScript, CSS, HTML, Flyway, Unit Testing, Back-endSoftware Engineer
2011 - 2014Georgia Tech Research Institute- Developed a new SPA-style web app for administering firewalls and specifying access policies for classified web-based services.
- Overhauled a complicated GWT-based application module for handling the workflow for requesting and approving personnel access to classified programs.
- Designed and implemented a stand-alone service to perform content inspection on uploaded files for use in a classified file-sharing system.
- Integrated new and existing applications into an OpenAM-based single-sign-on framework to support access-controlled user sessions based on authorizations returned by the SSO server.
- Profiled and diagnosed performance issues in our SSO service until it met performance requirements and doubled the requests/minute.
- Offered meaningful and polite feedback in hundreds of code reviews for teammates and student co-ops.
Technologies: Google Web Toolkit, Guava, Ext JS, JMS, Hibernate, Spring, JavaScript, Java, Web Development, Agile Software Development, IntelliJ, HTML, CSS, SQL, MacOS, Full-stack Development, Automated Testing, Full-stack, Code Review, Google Guava, REST APIs, Unit Testing, Multithreading, Back-endSoftware Engineer
2006 - 2011Veloxiti, Inc.- Designed and implemented the next version of Veloxiti's core product, a C++-based cognitive engine, as part of a small development team.
- Developed a graphical knowledge editing tool for Veloxiti's cognitive engine, built as a set of Java plugins to the Protege ontology editor.
- Built a Java application to extract structured data from military operation orders and tactical chat using the GATE natural language processing toolkit.
- Implemented Java and Soap-based web services to communicate among Veloxiti's cognitive engine, a tool processing tactical mIRC chat, and the Army's Command Post of the Future.
- Performed background research, interviewed experts, and wrote the final report for an SBIR Phase I projected to build an expert system to assist in estimating Human Systems Integration costs in Naval acquisitions.
Technologies: SOAP, Natural Language Processing (NLP), Protégé, Java, C++, SQL, Artificial Intelligence (AI), Unit Testing, Maven, Back-end