E-Commerce Development · San Francisco

E-Commerce Development
in San Francisco

Storefronts that convert and checkouts that don't break at scale.

We build e-commerce storefronts for founders in San Francisco — headless Shopify Hydrogen when you need custom UX, a hardened Shopify Plus theme when speed matters more, custom carts when the platform gets in the way. One senior engineer owns checkout, inventory sync, and the storefront, so launch day isn't held together by three unrelated apps.

Get a E-Commerce Development quote San Francisco overview

Engagement shape

From

$3,000

Flat price, quoted after 30-min call

Timeline

2–3 weeks

First production deploy

Senior engineer, named

Day 1

Code in your GitHub

Retainer, equity, lock-in

How this works

One AI-native engineer.
The output of a team.

One senior engineer plus AI agents now ships e-commerce development that used to need a four-person team. Same code quality, half the cost, three-week timelines instead of three months. Built for pre-seed to Series A founders in San Francisco who need to ship before the next round closes.

The local read

Why e-commerce development is hard in San Francisco

SF founders compete with OpenAI, Anthropic, and every Series B sitting on $200M in dry powder. A senior engineer offer that actually wins here is $400K all-in, plus relocation, plus equity refreshers. At seed stage that's most of the round.

One named engineer with AI agents now does what a four-person team used to. Three-week timelines instead of three months. Flat-price quote in 24 hours after a discovery call. Pacific Time, overlap with your Sand Hill investors and your early customers in the same window. Code in your GitHub from commit one.

Hiring one senior engineer here is a ~$310K year-one outlay and a 60–90 day search. Our e-commerce development engagement starts at $3,000 with a first deploy in 2–3 weeks.

Did you know · San Francisco

Y Combinator has funded over 5,000 startups since 2005. Combined valuation is north of $600B.

Time zone

--:--:--

Pacific Time. You can DM us at 9am and get a response at 9:01am.

Sectors in San Francisco

AI and ML infrastructureDeveloper toolsConsumer appsClimate techFintech

Stack we use

Shopify / Shopify PlusHydrogen (headless)Next.jsTypeScriptKlaviyo / Postscript

What you actually get

Concrete deliverables.
Live in 2–3 weeks.

No discovery phase that bills for itself. No Figma-only delivery. Every item below is something you can open, click, and ship to a user.

Storefront live — headless Hydrogen build or a hardened Shopify Plus theme, whichever fits your timeline and design ambition

Checkout wired correctly: discounts, bundles, subscriptions via Shopify's native checkout, no third-party checkout hacks that break at scale

Inventory and order sync with your fulfillment provider or 3PL — no manual CSV exports

Email/SMS flows wired (Klaviyo or Postscript) for abandoned cart, post-purchase, win-back

Performance budget held — Core Web Vitals green on the product and collection pages that actually drive conversion

Why us

Why founders in San Francisco pick us for this

Senior engineer who has shipped headless Hydrogen builds, not just installed theme apps

We know where Shopify's app ecosystem is worth using and where it becomes technical debt

Checkout and inventory correctness treated like fintech-grade problems — a broken checkout is lost revenue, not a bug ticket

Flat price includes the launch-week firefighting most agencies bill as a change order

E-Commerce Development we've shipped

Founders we shipped e-commerce development with

Real founders, real product, real testimonials. The kind of e-commerce development work we'd do for you in San Francisco.

AI Tool · 2025

Irresistible Bot

The platform combines structured onboarding, intelligent prompts, and brand-specific logic to ensure every output is grounded in real context. The more details users provide, the better and more accurate the results become. This allows the AI to act as a true copy coach, not just a writing tool.

Visit the product

“I came to the team with a clear vision of what I wanted to build -- a coach bot that could truly reflect my voice, my methodology, and my years of experience in copywriting and coaching. Start Matter helped turn that vision into a real product, handling everything from the technical foundation to the branding elements like the logo and overall experience. What stood out most was how thoughtful and collaborative the process felt. The team asked the right questions, took the time to understand my brand, and helped structure the system in a way that makes the bot both powerful and easy for clients to use. It never felt generic -- it felt tailored to me and my audience. They also helped shape the onboarding and content flow, making sure the questions and prompts guide users to give meaningful input, so the results are genuinely useful and aligned with the message: "Let's Create Irresistible Copy Together." Start Matter didn't just build a tool -- they helped me bring my coaching approach into a scalable, digital format. I'm truly grateful for their care, clarity, and commitment, and I would absolutely recommend them to anyone building an AI-powered product rooted in real expertise.”

Vrinda Normand

CEO at Irresistible Online Marketing, Inc.

Content Platform · 2022

Sweet and Savory Meals

Homemade recipes blog and e-commerce platform for food lovers. Easy and delicious dishes with integrated recipe management and shopping features.

Visit the product

“When we started, there was no website, no technical foundation, just an idea and a clear vision of what I wanted to build. Valery and the Start Matter team took that vision seriously and helped me turn it into a real product from scratch. What I appreciated most was how easy and human the collaboration felt. They listened carefully, explained things in a way I could understand, and genuinely cared about building something that would work long-term, not just "finish a task." I always felt supported and involved in the process. Start Matter handled everything end to end and made the whole journey smooth and stress-free. Today, Sweet and Savory Meals is live, growing, and built on a solid foundation I trust. I’m truly grateful for their work, their patience, and their commitment, and I would happily recommend Start Matter to anyone looking for a reliable and thoughtful development partner.”

Catalina Castravet

Founder, Sweet and Savory Meals

E-commerce Platform · 2023

Idlecorp

E-commerce platform with AI-powered product recommendations and personalized shopping experiences. Streamlined checkout and inventory management.

Visit the product

“I had the pleasure of working with Start Matter on Idle, Corp, where they helped bring our e-commerce vision to life. From the beginning, the team was professional, responsive, and deeply committed to delivering results. Start Matter handled the full e-commerce implementation, expertly translating our business needs into a seamless online experience and integrating payment systems that were reliable and user-friendly. What stood out most was their technical expertise and ability to navigate complex integration challenges with clarity and efficiency. The team communicated clearly throughout the process, ensured each step was aligned with our goals, and delivered on time. Thanks to Start Matter, our e-commerce platform is now fully operational and positioned for growth. I’m grateful for their partnership and would recommend them to any business looking for a dependable and skilled development team.”

Slava Shishov

Founder, Idlecorp

FAQ

Common questions about e-commerce development
in San Francisco

How fast can you start?

Most builds begin within seven days of the first call. We don't sell discovery — we go from problem statement to first deploy on the same day-one timeline.

Is the price really flat?

Yes. After a 30-minute call we send a single number and a scope you can accept or reject. No hourly billing, no change-order games. If we underestimate, we eat it.

Headless Hydrogen or a Shopify Plus theme?

Theme-based if you need to launch in two weeks and the design is close to what Shopify templates support well. Headless Hydrogen if you need custom UX, sub-second page loads, or you're integrating commerce into a larger product rather than shipping a standalone storefront.

Do you migrate from another platform?

Yes — most commonly from WooCommerce or a custom cart to Shopify. Product catalog, customer accounts, and order history migrate; we flag anything that won't map cleanly before we start.

Who owns the code?

You do, from commit one. The repository is created in your GitHub org. Infrastructure is provisioned in your cloud account. We don't host your stack on ours and we don't lock you in.

More questions → /faq/tech · /faq/timeline · /faq/cost

Got a question about e-commerce development in San Francisco?