* Engineered the greenfield rebuild of the LiquidPlanner platform, achieving significant performance enhancements while reducing infrastructure costs by 80%.* Improved the algorithms used for database tree storage and user-prioritizable lists for heavily increased write performance.* Designed a GraphQL-inspired REST API supporting a complex frontend with a minimal number of network calls for 95% of pages. Utilized websockets for live page updates.* Orchestrated cross-team collaboration as the primary liaison between product and engineering teams, providing estimates, available trade-offs, and requirements.* Developed a novel scheduling algorithm improvement that eliminates unnecessary bookkeeping to further increase scheduling performance by 200-400%.* Built a TypeScript plugin to support incrementally migrating to strict mode on a per-file basis. Mentored frontend team members on complex type definitions, null safety, and data performance.* Created a robust billing integration with Chargebee with a powerful entitlements model for managing customer features and limits. Supported custom pricing and upselling opportunities for enterprise clients without extra code.

* Migrated a monte carlo scheduling engine from NodeJS to Java, achieving a 1000% performance increase. Compared outputs from both services across all production customers to ensure no regressions in performance or correctness.* Optimized PostgreSQL queries, improving system performance and stability. Reduced the runtime of key admin reports from hours to seconds. Introduced tooling to simplify the development of performant features.* Architected data anonymization tooling to support performance and bug testing on real data while maintaining data confidentiality.* Stabilized the company’s core application, slashing incident rates from 2-4 times per week to a handful annually, enhancing system reliability and customer satisfaction.* Replaced manual deployment processes with a TeamCity-based continuous integration pipeline, reducing average deployment times to under five minutes while minimizing human error.

* Developed SPA admin interfaces and designed RESTful backend APIs, enhancing user experience and system cohesiveness.* Simplified software build processes, improving development workflow efficiency.

* Designed an ASP.NET MVC/WebAPI platform, enabling scalable application and web service delivery.* Led technical stack modernization and spearheaded the migration to C#, enhancing maintainability.

* Created a low-code framework using C# and WPF, simplifying application development.* Implemented a custom business rules engine for defining customer promotions and discounts.* Optimized critical Hibernate SQL queries widely used across the company’s applications, resulting in improved application responsiveness.

* Transitioned the codebase to ASP.NET MVC, developing a web portal framework to over 30 applications.* Trained a team of nine developers on writing high quality SQL code via code reviews.* Managed the organization’s Linux servers and maintained approximately 10 Plone based websites.