Marcus T.
✓ Vetted CrafterPrincipal Software Engineer – New Features & Integrations
I ship reliable features fast, using AI to close the gap between idea and production.
About
I have spent twelve years building product features at scale — from billing systems at a Series B fintech to API integrations at enterprise SaaS companies. Cursor and Copilot have become my daily drivers: I use them to scaffold boilerplate, write tests, and explore unfamiliar codebases. The result is that I ship faster without cutting corners on quality.
My sweet spot is greenfield features that connect systems: new user flows, payment integrations, third-party API connections. I design for maintainability from day one — clear boundaries, typed interfaces, and tests that actually catch regressions. I have led feature teams of 5–7 engineers and I care deeply about code review and documentation.
I work primarily with TypeScript, React, and Node.js, with PostgreSQL and Redis for data. I have shipped Stripe integrations, OAuth flows, webhook handlers, and event-driven architectures. AI tools accelerate my work, but the product thinking and architecture decisions are always mine.
AI Expertise
Notable Projects
Billing & Subscription Management Feature
Designed and built a complete billing feature for a B2B SaaS: Stripe integration, subscription tiers, usage-based metering, and invoice generation. Used Cursor for rapid scaffolding of API routes and React components.
✓ Launched in 8 weeks; 94% of customers self-serve billing changes; reduced support tickets by 40%.
Third-Party Integrations Hub
Built an integrations platform connecting a CRM product to 12 external services (Salesforce, HubSpot, Slack, etc.). OAuth flows, webhook handlers, and sync jobs. Used AI-assisted debugging to trace edge cases across vendor APIs.
✓ Reduced integration build time from 3 weeks to 5 days per service; 99.9% webhook delivery reliability.
Real-Time Collaboration Feature
Shipped a real-time collaborative editing feature using WebSockets and CRDTs. Built the backend sync layer, conflict resolution, and React UI. Copilot helped with test coverage for edge cases.
✓ Supports 50 concurrent editors per document; zero data loss in 12 months of production use.
Work Experience
Principal Software Engineer
Veridia Financial
2022 – Present
Lead a team of 7 engineers building billing, integrations, and core product features. Own the feature roadmap and use AI tools to accelerate delivery without compromising quality.
Staff Software Engineer
Databricks
2018 – 2022
Built product features for the data platform UI and API. Contributed to integration patterns with enterprise data sources. Introduced Cursor to the team for faster feature development.
Senior Software Engineer
2014 – 2018
Shipped user-facing features for the ads platform. Owned API integrations with third-party measurement partners. Built internal tools that improved developer productivity.
Education & Certifications
M.S. Computer Science
Carnegie Mellon University · 2013
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