Conan McNicholl

Payroc · Remote

• Architected a Turborepo monorepo with a Next.js 15 portal app and a 61-component Storybook-driven React library built on Radix UI primitives, used across 4 product teams
• Owned the full delivery lifecycle: requirements analysis, feature definitions, task breakdowns, test plans, acceptance criteria, and sprint estimations for a team of 6
• Implemented OIDC-based authentication with react-oidc-context, contract testing against OpenAPI specs, and Chromatic visual regression testing across chromium, firefox, and webkit
• Set up Docker Compose development environment orchestrating OIDC mock server, Mountebank API stubs, Storybook, and the portal app for fully offline local development
• Established coding standards, led technical interviews, and mentored 3 junior developers through promotion cycles

Songtradr · Remote

• Promoted to Staff Engineer within 8 months, the fastest promotion in the engineering org at that time
• Designed and shipped an internal headless React component library adopted across 3 product verticals, eliminating duplicate UI code
• Increased page performance scores by 37% using Lighthouse profiling, code-splitting, and targeted bundle optimisations
• Led frontend architecture decisions across a distributed team spanning 4 time zones

Flexera · Remote

• Led a team of 4 EMEA-based engineers delivering features across 6 micro-frontend applications serving enterprise IT asset management customers
• Created an internal React component library that became the standard across all frontend projects, reducing new feature delivery time by ~30%
• Drove adoption of TypeScript and modern testing practices (Jest, React Testing Library) across the frontend org

Made to Engage · Belfast, UK

• Delivered client-facing web applications for brands including Tourism Ireland and Invest NI at a digital agency
• Introduced component-driven development with React, migrating legacy jQuery codebases and improving maintainability
• Conducted usability testing and iterated on designs based on client feedback and analytics

Synergy Learning · Belfast, UK

• Built interactive e-learning platforms on Moodle and Totara for clients including the NHS and UK Civil Service
• Led the migration of legacy PHP templates to modern responsive frontends

Learning Pool · Belfast, UK

• Designed and developed e-learning modules and platforms for enterprise clients across healthcare and government
• Built responsive, accessible interfaces reaching 100k+ end-users across the UK and Ireland

Founder / Solo Engineer · Open Source

• Built a 67+ component React design system on Base UI headless primitives with full WCAG AA compliance, seed-based theming (~200 CSS tokens from 4 config values), and automatic light/dark mode
• Designed a metadata-first architecture where every component ships with a co-located .contract.json, the single source of truth for both human developers and AI agents
• Created 9 MCP tools enabling AI assistants (Claude, Cursor) to query real component contracts, discover composition patterns, enforce design tokens, and run accessibility checks at generation time
• Building Fragments Cloud, a governance layer for AI-generated UI with drift detection, design system compliance scoring, and team dashboards
• Built the CLI toolchain (Babel AST parsing, visual regression, component scaffolding) and the docs site with blog, all as a solo engineer

Stack: TypeScript, Next.js, React, Vite, Base UI, Playwright, Anthropic SDK, Babel, Commander.js, Vitest, PostHog