# **Serkan Yersen** Lead Software Engineer \- Frontend Architecture & Developer Infrastructure **Email:** [serkanyersen@gmail.com](mailto:serkanyersen@gmail.com) • **Website:** serkan.dev • **Location:** Bay Area, CA --- ## **SUMMARY** Senior Software Engineer with 19+ years of experience and most recently 6 years at Meta working across WhatsApp Web, WhatsApp Mobile Infrastructure, release engineering, and agentic AI developer workflows. Deep expertise in JavaScript/TypeScript, large-scale frontend architecture, build systems, release automation, and developer experience tooling. Led teams delivering highly reliable release systems powering WhatsApp for **3+ billion users** across all platforms. Results-driven engineer with a strong focus on performance, stability, and tooling that massively amplifies developer velocity. --- ## **EXPERIENCE** ### **Meta (Facebook / Meta Platforms) \- *Staff Software Engineer*** **Sept 2019 – Present | Menlo Park, CA** #### **WhatsApp Web – Frontend Architecture & Desktop Apps** * Architected core components of **WhatsApp Web**, including performance-critical UI systems and long-term frontend infra used by millions daily. * Built and maintained foundational tooling for the web client (Webpack/Babel/ESLint/PostCSS customizations, build performance improvements, bundling strategies). * Co-developed and shipped **WhatsApp Desktop (Electron)**, owning desktop-specific integration points and build distribution workflows. * Drove modernization of the codebase toward monorepo and stricter architectural boundaries. #### **WhatsApp Mobile Infra – Release Infrastructure & Developer Tooling** * Led the engineering effort for **WhatsApp’s release infrastructure**, supporting Android, iOS, Web, and Desktop. * Owned reliability, automation, and scalability of systems responsible for delivering WhatsApp to **3B+ users worldwide**. * Designed and implemented advanced internal tools including: * **Release Hub** (central release management) * **On-Demand Dev Environments** * **Release Data Architecture** * **Developed APIs and Automations for code delivery workflows.** * **CI/CD code reliability tooling** (internal Meta infra) * Led a team of developers to ship resilient, high-automation pipelines reducing human error and drastically shortening release turnaround times. * Partnered with cross-functional teams (mobile clients, backend, QA, security) to unify release practices across multiple platforms. #### **Agentic AI Developer Flows \- WhatsApp** 2024–Present * Building agentic AI workflows that assist developers in understanding, modifying, debugging, and shipping features across WhatsApp’s massive codebases. * Designing systems enabling LLM-powered code navigation, release awareness, and scheduling. * Focused on bridging developer tools, AI orchestration, and WhatsApp’s complex distributed architecture. * Collaborating with Meta AI teams to operationalize agentic capabilities for real engineering use cases at scale. --- ## **EARLIER EXPERIENCE** ### **TechShed / RedBeacon (Acquired by Home Depot) \- Frontend Architect** **2013 – 2019** * Worked as tech lead on companies various frontend applications, focused on scalability, reliability and delivery for Homedepot’s many online workflows. * Build various developer tooling and APIs for productivity. * Formed and mentored a strong frontend team capable of delivering high quality applications in a short amount of time. ### **JotForm.com \- Founding Engineer** **2006 – 2013** * Built Jotform’s first of its kind Drag\&Drop WHYSIWYG form builder. * Built core frontend and backend architecture used across millions of form submissions daily. * Developed internal libraries, tools, and infrastructure that accelerated company-wide development. --- ## **TECHNICAL SKILLS** **Languages & Core:** JavaScript (ESNext), TypeScript, Flow, HTML, CSS, SQL, GraphQL **Frontend Architecture:** React, Redux, Webpack, Babel, Electron, build systems, design systems, performance optimization **Backend & Infra:** Node.js, Express, microservices, CI/CD systems, containerized workflows, internal Meta infra, distributed pipelines **Tooling & Developer Experience:** Custom linting/transforms, code mods, static analysis, CLI tooling, dev-workflow automation, release pipelines **AI / LLM Work:** Agentic workflows, developer-tool integration, code intelligence, in-context orchestration --- ## **PROJECT HIGHLIGHTS (Meta)** * **WhatsApp Release Hub** \- Unified release coordination platform across Android/iOS/Web/Desktop. Reduced release friction and improved stability. * **WAJS On-Demand Dev Environments** \- Provided instant testing environments, cutting dev iteration time. * **AI Powered Knowledge and Productivity tools** \- Helps developers navigate highly complex release infrastructure, schedule releases, hotfixes and product launches. * **WhatsApp Desktop Architecture** \- Key contributions to the Electron-based desktop client. * **Meta-wide Dev Infra Integrations** \- Improved reliability and visibility across internal CI systems used by hundreds of engineers. --- ## **EDUCATION** 2005 Bilkent University \- Computer Technologies & Programming