I build end-to-end products from concept to launch, specializing in consumer apps, creator platforms, and real-time systems.
With over 14 years of experience, I've shipped products that handle payments, messaging, video pipelines, and monetization infrastructure—including
the SERHANT platform that secured $45M in Series A funding.
Currently building Elithr, a creator monetization platform with subscriptions and real-time messaging,
ClassCrafter, an AI-powered curriculum generator, and
Hanii, a mobile dating app with video features. I enjoy working with early-stage startups where I can take ownership
of complex features and turn ambitious ideas into production-ready systems.
* Hand-designed; AI-augmented where it earns its keep.
As a product engineer with over 14 of experience building consumer apps and creator platforms, I specialize in taking ideas from concept to fully functional products. My work sits at the intersection of product design and engineering, allowing me to ship complete features independently while working closely with founders and early-stage teams.
React Native applications with video pipelines, camera integration, and real-time features. I've built mobile apps handling everything from recording workflows to content monetization, focusing on performance and native user experiences.
Stripe integrations, subscription tiers, credit systems, and webhook infrastructure. I've implemented complete monetization platforms supporting creators with recurring payments and real-time balance management.
WebSocket messaging, Supabase Realtime, and notification systems. I build scalable real-time features for chat platforms, live updates, and collaborative applications with proper state synchronization.
End-to-end product development with Next.js, TypeScript, and cloud functions. I handle the complete stack from database design to API architecture to production deployment and monitoring.
Three products I designed and built end-to-end — two React Native iOS apps and a desktop market-intelligence platform. Each is live and in the hands of real users today.
Peter was a breath of fresh air when it comes to developers. He was quick, professional and took all of my comments into consideration. The end result exceeded my expectations.
Danny Courisou – Managing DirectorI can’t thank you enough for having no life the last 3 months to seriously improve our user experience and mobile. I appreciate your dedication and efforts immensely
Marshall – CEO and Founder, AquariumHubMr. Garcia did a fantastic job creating a design for our application, on demand with a great turnaround time. His work has exceeded our expectations and we would recommend him without hesitation to anyone looking for a great designer. His code was clean, concise, and easy to work with, and he was very communicative throughout the process. Thanks, Peter!.
REDACTED - NDAI needed a refresh of one of my websites in preparation for a marketing push. /u/mserenio was prompt, courteous, understood what I was looking for, and got the job done well and on time. Extremely responsive to feedback and emails. Highly recommend.
REDACTED - NDAA mobile-first platform designed to help creators distribute and monetize short-form video content. Building the complete stack from React Native mobile app to content delivery infrastructure.
I'm currently open to senior product engineering and founding engineer roles where I can help build ambitious products from the ground up.
Early-stage startups (Pre-seed to Series A)
Product-driven teams building consumer apps
