Mark Sherer Email & Phone Number

New York, NY, US

San Francisco, CA, US

San Francisco, CA, US

Using Haskell and TypeScript to create cool banking experiences

• (Left due to company shutting down)
• Developed an accessible, highly performant NextJS (React, TypeScript) app with server-side rendering, Redux, WASM-based DuckDB for a browser-based query engine, and Vega for visualization.
• As one of the founding engineers, I built many of the core systems, UX library components, APIs, and integration from the ground up. We aggressively experimented with the platform and actively adapted to user feedback.
• Was responsible for major architectural decisions, including our NodeJS API design, user and token-based authentication, and event-driven architecture using lambda functions.
• Built Notion integrations to unfurl interactive charts in documents.
• Built significant portions of a Chrome extension that enriched existing webapps (e.g. BigQuery),with visualization. The extension utilized the same core tech as the app.

San Francisco, California, US

• Improved the seller’s search experience by adding dynamic filters to the Algolia-based search UI.
• Improved package label readability and processing speed by utilizing dynamic PDF designs.
• Contributed many accessible components to Deliverr’s component library (React, TypeScript,Storybook). This involved deep collaboration with library maintainers and UX designers.
• Built product features such as bulk product uploads via CSV file.

Toronto, Ontario, CA

• Developed data-heavy internal apps for the sales, marketing, private equity, and real estateteams (React, SQL Server, Redis). The apps led to increased profits by improving data transparency for business stakeholders.
• Developed a component library (React, TypeScript, Storybook) based on Manulife’s UX system.
• Architected core webapp services from the ground up, including SSO-based auth (Azure AD),integration with the Azure Graph API, and multi-environment CI/CD with GitHub Actions.

Cambridge, Massachusetts, US

• Renovated large portion of the webapp’s UI (Angular 2), with an emphasis on enhancedusability and feature-rich product redesigns, increasing customer engagement.
• Developed a performance-monitoring suite for Composable’s dataflow engine to debugperformance bottlenecks and track dataflow progress in real time (C#, dotnet framework, SQL Server, SQLite).
• Enhanced the dataflow development process with module output caching, allowing incremental, iterative development (analogous to incremental compilation vs. full recompilation on each dataflow run).
• Deployed resilient, high-performance data-engineering pipelines, enhancing robustness of production-level data ingestion and refinement