Sheyda Rezaei

Senior Mobile Engineer with nine years shipping consumer product at VC-backed SF startups. Deep native module experience across iOS (Swift, Objective-C) and Android (Kotlin, Java) paired with React Native cross-platform ownership. In my most recent mobile role at Gametime, I rebuilt a fast, streamlined checkout flow and added Affirm and PayPal as native payment options, which drove $1MM Affirm GMV at 6% of ticketing volume, 4% lift in new app revenue per active user on iOS, and 2.5% iOS conversion improvement.

Also founded Build to Scale in June 2025 and built the agentic systems that run a B2B GTM agency end to end, directly transferable to mobile teams shipping AI features. Looking for a Senior or Staff Mobile Engineer role where native performance, cross-platform architecture, and AI-native mobile experiences intersect.

Founder & GTM Engineer at Build to Scale (2025-06 – 2026-08)

AI-powered GTM agency serving active B2B clients.

• Built and deployed an agentic system on Claude API, MCP, N8N, and Python: webhook and scheduled workflows that classify inbound with an LLM, route to Slack for human approval, and fire approved actions through third-party APIs (HeyReach, Instantly, Lemlist, SmartLead)
• Built a signal-based data pipeline in Python + Claude API: Apify scrapes LinkedIn engagement and intent signals, Claude qualifies each record against ICP criteria, and results route automatically downstream; best campaign hit 64% connection acceptance and 32% reply rate across ~1000 leads over 3 months
• Deep hands-on with LLM APIs, MCP integrations, agentic workflows, and prompt engineering

Senior Mobile Engineer at Gametime United (2021 – 2024)

• Built the redesigned checkout flow end-to-end with custom native animations; implemented Affirm and PayPal payment integrations natively on iOS and Android with a fast, streamlined checkout funnel. Affirm reached $1MM GMV at 6% of all ticketing volume; combined with PayPal, drove 4% lift in new app revenue per active user on iOS and 2.5% iOS conversion improvement
• Led full mobile attribution platform migration from Kochava to Adjust across iOS and Android; ran both platforms in parallel behind an Apptimize flag so marketing could switch over smoothly without a new release
• Migrated push and marketing infrastructure from Iterable to Braze, shipping the cutover release timed to the vendor contract expiry; implemented purchase tracking, push notifications, and user events on iOS and Android
• Shipped hard-deadline compliance features: NY Face Value law (all-in pricing for NY state venues), Android API upgrades (Google Play deadline), and MLB TDC Certification (direct-delivery ticket transfer)
• Worked on the native-to-React-Native migration, removing legacy native bridge components as functionality moved to JS, toward a goal of zero unused native code
• Architected the client layer for a rebuilt listings screen against a new backend contract: server-driven layout, separate data and state for feed and map views at each zoom level, and cryptographically signed pricing to prevent client-side tampering
• Owned search and discovery tracking across the app: integrated Algolia query attribution end to end with backend and data teams so click, view, and conversion events could train ranking, and built the search session identity layer

Mobile Engineering Lead at Upturn (2019 – 2021)

• Led mobile engineering for a fintech app serving 400K+ iOS and Android users; built modular React Native and Redux components with responsive design for performance and extensibility across device sizes
• Designed and built a customized in-app feedback system that gave users a direct channel to rate and review, lifting the iOS App Store rating from 3.8 to 4.9
• Integrated Segment and AppsFlyer across the app to track user events and views, enhancing monetization, marketing attribution, and personalized credit product offers
• Shipped push notifications for credit score and account updates via Salesforce Marketing Cloud MobilePush and Firebase; implemented biometrics and OAuth2 authentication for onboarding
• Built RESTful APIs; improved email verification and login via deep linking; implemented TDD with Jest and CI/CD via CircleCI and GitHub Actions

Software Engineer at GoNitely (2017 – 2019)

• Built modular front-end components across web and mobile for a short-term rental marketplace using React, React Native, ReactXP, and Redux; implemented responsive design with Flexbox and Sass
• Built core product features: real-time chat and intercom system between hosts, guests, and admin; shareable global calendar for bookings, cleanings, and maintenance; per-property financial reporting with monthly income and expense breakdowns
• Built an in-app photo capture flow for house cleaners to document receipts and property damage; coordinated and shipped cross-platform mobile app releases

Technical Consultant / Product Lead at MAAZ Learning Solutions (2014 – 2017)

• Built a content-agnostic Learning Management System on the open-source Moodle platform; gathered technical and functional specs from clients, hired and supervised programmers, and managed the release cycle

Supply Chain Coordinator at IOMC (2009 – 2012)

• Managed global supply chain operations end-to-end covering procurement, logistics, warehousing, distribution, and sales of office equipment and technology systems from Sharp, LG, and Optima
• Forecasted and ordered $25M+ per year in supplies; monitored distribution across 200+ dealers; analyzed sales data and built proposals for new procurement, product launches, and sales opportunities

Advanced Software Engineering Immersive Program – Hack Reactor (2016 – 2016)

Post-Baccalaureate in Pre-Med – San Francisco State University & City College of SF (2013 – 2015)

B.A. in English Literature & Business Administration – Allameh Tabataba’i University (2003 – 2007)