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James Sheldon

@jamessheldon

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Founding engineer and CTO at Cashew Research, who built an AI market-research platform from the first commit.

Canada

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At Cashew Research, I built an AI market-research platform from the first commit and led its engineering team. I designed a Claude Code agent system for reviewed, merge-ready work and shipped the Cashew Collective respondent panel.

At Contra, I built Discover Independents search and an automated job-to-freelancer matching engine. Earlier, at Critical Mass, I led development teams on Nissan configurators and built a colour-administration tool for creatives.

Experience

Work history, roles, and key accomplishments

Chief Technology Officer (Founding Engineer)

Cashew Research

Jan 2024 - Jan 2026 (2 years)

Built an AI market-research platform from the first commit, leading the engineering team and designing an AI-agent system. Achieved TechCrunch Disrupt 2025 Best Enterprise Company recognition.

TypeScript Next.js tRPC PostgreSQL Temporal Claude Code AI Agents SOC2 Stripe Twilio Sentry Playwright Mutation Testing Terraform AWS GCP Vercel

Senior Fullstack Engineer

Contra

Jan 2021 - Jan 2024 (3 years)

Built the Discover Independents search end-to-end using Meilisearch and developed an automated job-to-freelancer matching engine. Championed Playwright end-to-end coverage and mentored engineers.

Meilisearch Playwright Search Matching Engines TypeScript React NodeJS PostgreSQL Prisma tRPC GraphQL Temporal Stripe Twilio Vercel GCP AWS Terraform Sentry PostHog

Technology Director

Critical Mass

Jan 2014 - Jan 2021 (7 years)

Promoted from Senior Developer to Technology Lead to Technology Director. Set department-level development standards, owned hiring and mentorship, and led development teams on major projects.

React WebGL Pixi Leadership Hiring Mentorship Resource Allocation Career Development