Istanbul, Türkiye
Migrating features from Trendyol Go to the Uber Eats platform as part of the M&A process.
• Built tgoyemek.com, the storefront of Trendyol Go’s delivery platform, from scratch; now handling 3,000+ orders/day. • Engineered Next.js SSR and platform-level SEO, growing organic traffic to 250K impressions / 20K clicks per month. • Worked across all domains of the greenfield web platform in a 4-person frontend team, including major delivery of Search, Promotions, and Flash Sale. • Shipped Flash Sale end-to-end on web, from merchant setup and management pages to the end-user experience on tgoyemek.com • Implemented production-ready client request handling patterns, including caching and retry mechanisms, improving reliability under real traffic. • Delivered ~8 greenfield projects primarily as microfrontends using React and Vue.js (seller/admin tools for promotions and operations). • Built a B2B brand partner platform from scratch enabling large firms to manage grocery operations and promotions, implementing RBAC to support secure multi-role workflows. • Core maintainer of Baklava (open-source design system) used by 100+ internal teams, contributed to 25+ type-safe, accessible components. • Built an MCP Server integrating Baklava with AI-enabled IDE workflows, reducing UI development time via faster component discovery and usage. • Contributed to an emerging vertical product initiative (Classified/Search, Real Estate) under tight timelines; later suspended due to external constraints.
ToDiagram is a visual editor that turns complex data and systems into interactive, editable diagrams. • Built ToDiagram, a diagramming editor powered by a high-performance canvas enabling real-time, two-way editing and large-scale visualizations. • Engineered a rendering pipeline that can display tens of thousands of nodes instantly, keeping pan, zoom, and editing smooth under heavy graphs. • Implemented OffscreenCanvas rendering, incremental redraw strategies, and geometry-based hit testing for responsive interaction at scale. • Built race-safe async loading with cancellation and action queueing to prevent stale renders and lost interactions. • Developed the product in a Turborepo monorepo with shared packages across the web app, extensions, and backend tooling. • Extended the product across platforms via PWA, Chrome extension, VS Code extension, and an MCP server. • Shipped end-to-end monetization including subscriptions, payments, entitlements, and operational workflows. • Built an AI Copilot to generate diagrams, answer data questions, and apply structured modifications. • Secured a strategic partnership with GitHub Education, shipping in the Student Developer Pack 2025. • Served customers including people working at Fortune 500 companies, supporting documentation and communication workflows.
JSON Crack is an open-source tool that visualizes JSON as an interactive graph, making nested data easy to explore, debug, and share. • Built and maintained JSON Crack, an open-source JSON visualization tool (41k+ GitHub stars) that turns complex JSON into interactive, explorable diagrams. • Designed core UX for navigating large nested data (zoom/pan, expand/collapse, search, focused inspection) to make debugging and understanding faster. • Improved performance and responsiveness for big payloads via rendering optimizations, memoization, and efficient data transformations. • Implemented a secure, lightweight iframe embed flow for interactive diagrams, enabling easy sharing and integration across external websites and internal documentation. • Established maintainable OSS practices (issue/PR templates, CI checks, reviews, contributor docs) to scale contributions and releases. • Iterated rapidly based on user feedback, shipping frequent UX improvements and reliability fixes.
• Built data-intensive dashboards for real-time infrastructure monitoring using React, Redux, and React Flow. • Implemented a virtualized datatable component with dynamic row heights, infinite scroll, and sorting, optimized to render millions of records smoothly. • Developed a node-based service map using React Flow to visualize live system dependencies and topology, improving alerting workflows and incident response times.
• Explored multiple programming languages and domains early through hands-on projects, including Visual Basic, C, C++, C#, and Java, progressing from desktop apps to full web applications. • Built and customized community forums and websites using vBulletin and XenForo, handled deployments via FTP, managed databases with phpMyAdmin, and developed features with PHP and MySQL. • Studied web security fundamentals based on OWASP guidance and applied practical improvements to personal projects. • Built SSR blog-style web apps using Node.js, MongoDB, and Handlebars, focusing on server-rendered pages and production-ready deployment workflows. • Built and shipped a cross-platform 2D sandbox Minecraft-like game using GameMaker Studio and GML, integrated AdMob monetization, reached 250K+ downloads on Android and 30K+ downloads on Windows. • Built and scaled a Discord bot end to end using Node.js and MongoDB, including an in-bot economy, caching, rate limiting, and web scraping, reached 3K DAU and 2,000+ servers, partnered with Ubisoft to support their official game Discord community. • Volunteered full-time for 3 months on a CRM app built with React, integrating data visualization components, implementing authentication, and using Redux and Redux-Saga for state management. • Built and maintained multiple open-source projects. GitHub: https://github.com/AykutSarac