Do you need a Sharetribe marketplace development team with Y-Combinator, StartX, and Alchemist experience that gets sh*t done? Try us!
















Horizon Labs is a product development agency in California & Washington D.C.
Quick & Cost-Effective
Led by a YC alum and an ex-VC, we help startups rapidly build quality apps—without the engineering headaches and at a fraction of the cost—so you can focus on growing your business.

Horizon Labs' Accelerated Flair's Ability To Go-to-Market
"Horizon Labs has strong skills and experience with OpenAI, LLMs, API development, Kubernetes, and cloud deployment. Their engineering support helped us deliver a production-ready application we could roll out to customers fast."
- Samir Sen, Co-Founder & CEO at FlairLabs.ai (YC S22)
We Know Sharetribe.
We've been building on Sharetribe since 2022 and have been part of the Sharetribe Expert Network since 2023. Whether you need a marketplace built from scratch, your existing store ported over from Wordpress/Shopify, or need help enhancing your Sharetribe app, we've got your back!

Testimonials.
It doesn't matter what sized project you give us, Horizon Labs is dedicated to providing the very best engineering experience to teams who trust us to build with them.

Sonny Mo
Co-Founder & CEO @ Bloom (YC W21)
“HorizonLabs Team is one of the most technically gifted leaders and engineering teams I've ever worked with! They are swift executors and also generally very likable people who are fun to work with. We are very fortunate to have worked with them!”

Josh Archer
CTO @ Arketa (YC S22)
"They absolutely nailed it, getting everything done on time and without busting the budget. Seriously, their game was on point! They kept things smooth throughout. Major props to them and can't wait to work on more stuff together."

Dan Lee
Co-Founder & CEO @ Yura Health
“Horizon Labs is a high quality, responsive team with fast turnaround on sprints."

Samir Sen
Co-Founder & CEO @ FlairLabs (YC S22)
"Horizon Labs has strong skills and experience with OpenAI, LLMs, API development, Kubernetes, and cloud deployment. Their engineering support helped us deliver production-ready application we could roll out to customers fast."

Marcus Ellison
Chief Technology Officer @ TrueChoice
“Horizon Labs vastly increased our visibility into technical workflows and capacity to achieve projected outcomes. They have a fast and reliable team with exceptional integrity and commitment to doing a good job. Thanks horizonlabs!”

Victor Tang
Chief Product Officer @ Corros
“We worked with another agency and faced surprising costs because of unthought estimations. Working with HorizonLabs enabled us to work without surprises with well set estimations and expectations.”

Shraysi Tandon
Co-Founder & CEO @ Kidsy
“Horizon Labs feels like part of our company, even though they’re outsourced. They have a strong skill set and are proactive about getting things done.”

Haamid Ali
Founder @ Cresance (Alchemist + StartX)
"They brought fresh energy, were very collaborative, and had excellent communication and technical expertise. It felt like they cared!"
Successful Sharetribe Projects
We've worked with companies of all sizes in healthtech, e-commerce, marketplaces, AI, and more. We are tech-agnostic and can work around your stack or build one from scratch.

Sick Day Sports Club turns your sick days into epic adventures with personalized outings guided by local adventure pros.
Read more
Kidsy offers affordable, open-box and gently-used kids' gear from top brands, saving your wallet and the planet.
Read more
RareWaters offers exclusive fly fishing access to hundreds of miles of private, scenic waters and a vibrant community.
Read more
Patcom centralizes live Speech-Language Pathology (SLP) training, simplifying searches for FEES and mentorship courses.
Read more
BoatRent connects renters directly to boat owners, simplifying bookings and yacht charters with zero commission fees.
Read moreExperienced Engineers.
We're startup founders who love building products with ambitious founders! Find us on Bookface or contact any one of us below to talk about how we can help you build products your customers need.
Sinan Sari

Sinan is based in Irvine, CA and is a systems and processes nut. He was co-founder & CTO of Cuboh (YC S19), a senior software engineer at Tasso & Oscar Health, and a co-founder at Kidsy. He loves working on healthtech & e-commerce/marketplace projects. He does a little bit of everything depending on what our clients need. Sinan has a Bachelor's in Computer Science from Bilkent University.
Serdar Pehlivan

Serdar is based in Turkey and oversees developer output & training. A math Olympiad medalist, PhD in Computer Engineering from the University of Connecticut, Bachelor's in Computer Science from Bilkent University, and ex-Vice Dean of Engineering at Zirve University, Serdar's work ensures our developers deliver quality code on time and on schedule. He prepares every proposal, bi-weekly report, and financial reports for each client personally.
Esra Nur

Esra is based in Newport Beach, CA and is our lead Product Manager, bridging the gap between client business objectives and our technical teams. She's responsible for crafting user stories our engineers use to understand each client's customer needs before we begin writing code. Esra has a Bachelor's in Computer Science from Bilkent University, and a Master's in Graphic Design from the Istanbul Arel University.
Mairah Karim

Mairah is based in Pakistan and is our swiss army knife. She is the "voice of the customer" for Horizon Labs' clients and the projects we incubate internally. She built our process for prioritizing client requests, escalating emergencies, and updating customers about the status of their tasks regularly. She also runs our Founding Engineer's program by conducting every applicant interview personally. Mairah has her Bachelor's in Psychology from the Istanbul Bilgi University.
Basmah Masood

Basmah is based in Berkeley, CA and is responsible for providing UI/UX support for our clients and incubated projects. A self-described visual story teller, Basmah has 10+ years of experience as a photographer, videographer, and illustrator before she made the plunge into UI/UX design. She has her Bachelor's in Social Sciences from IBA Pakistan.
Gorkem Bendin

Gorkem is based in Turkey and is responsible for overseeing the code we deploy for clients. A full-stack web, mobile, and embedded developer with 9+ years of experience across a variety of startups and enterprises, Gorkem is one of our best coders and project managers ensuring successful client outcomes. He has a Bachelor's in Computer Engineering from Erciyes University.
Saif Akhtar

Saif is based in Berkeley, CA and is responsible for keeping our clients happy (and the lights on). He's been an early employee, co-founder, investor/VC, and advisor to various startups, most recently on the founding team of Cresance (part of Stanford's StartX & Alchemist Accelerator) and Intellus.ai. Saif has a Bachelor's in Mechanical Engineering from San Jose State University.
For Startup Builders
We've been founders ourselves and know how valuable the right communities, tools, and network can be, especially when bootstrapped. Here are a few that we recommend.
Need Developers?
We help build marketplace ideas into Sharetribe apps (without the engineering headaches).