David – Svelte.js, Node.js, Typescript

Gyodi is a Stockholm-based, venture-backed AI platform that generates high-fidelity fashion designs and content instantly for fashion brands, cutting the lead time and sampling waste of traditional design cycles. I lead engineering on the product end-to-end.

• Built and scaled Gyodi's AI-driven web application from zero
• Built a high-performance, server-side rendered frontend in Svelte/SvelteKit for fast load times
• Worked directly with the founders to shape product direction, translating early-stage vision into working, user-facing features
• Architected a production-grade SvelteKit frontend from the ground up, cutting time-to-market for the platform by 40%
• Led technical integration of the generative AI design pipeline, translating complex ML model output into a fast, intuitive interface
• Built a secure Stripe billing architecture handling subscription tiers, credit-based usage, and webhooks across global revenue flows
• Instrumented Sentry and Mixpanel across the generation and billing flows, giving the team real production error visibility and usage data instead of guesswork
• Automated zero-downtime deployments via Google Cloud Run and GitHub Actions CI/CD, accelerating release velocity
• Set the engineering bar: established component patterns, Git hooks, and a testing strategy to keep the codebase scalable as the team grows

BlackRock's Aladdin is the operating system behind the world's largest investment management platform, used internally and by hundreds of external institutions to manage trillions of dollars in assets across public and private markets. I worked on Aladdin Studio, the developer and data platform inside Aladdin.

• Engineered complex, multi-step TypeScript/React data registration workflows used by investment professionals across the platform
• Hardened global application state and performance on high-stakes financial dashboards using Redux and Redux-Saga
• Modernized legacy React architecture and integrated REST APIs, reducing load times and enabling secure, high-throughput data processing
• Maintained strict testing protocols through legacy upgrades, protecting uptime on infrastructure supporting trillions of dollars in assets under management

Wabtec's Port Optimizer™ platform digitizes freight tracking for major global ports, including the Port of Los Angeles, the busiest container port in North America, and the Port of Gothenburg, the largest port in Scandinavia. I built the Angular frontend across several of these tracking platforms.

• Modernized legacy tracking systems in Angular/TypeScript, building real-time reactive data visualizations for large-scale logistics data using NgRx and RxJS
• Standardized UI components with Material UI, improving decision-making speed and end-user retention
• Drove Angular version upgrades and built out unit/e2e testing to full code coverage, keeping the platform reliable for major port and rail operators

SpareMin's Headliner turns podcast audio into shareable video content, used by NPR stations, the BBC, Comedy Central, SiriusXM's Gimlet, and enterprise networks like Townsquare Media's 320+ radio stations.

• Architected and launched a gated PRO subscription tier using Node.js and feature-flagged React components, opening a new revenue stream
• Built Node.js backend integrations to automate social video distribution, cutting content processing time for creators
• Implemented and ran A/B tests and analyzed funnels to improve conversion into paid tiers