Sr. Full Stack Engineer
Tapcart Inc. · Santa Monica, CA
Extracted from the posting
Senior full stack engineer role to architect and ship core Tapcart product, a mobile commerce platform for Shopify brands, across frontend, backend, and database layers. Work includes designing proactive AI agent orchestration layers and prototyping human-agent collaboration interaction patterns. The role works side-by-side with the CEO, design, and key stakeholders on a lean team with minimal management.
At Tapcart, we believe every brand needs a direct relationship with their customers - one they actually own.
We are the mobile commerce engine that powers shopping for Shopify's fastest-growing brands. $15B+ in revenue processed. 200M+ shoppers worldwide. Brands like Princess Polly, Béis, Forever 21, and Young LA rely on us to power a large portion of their revenue.
We're a lean team with minimal management and big autonomy. Everyone here builds and code is core to what we do - engineers, product, leadership. We use our own platform, we talk to merchants daily, and we ship constantly. Backed by Shopify, Silver Lake and other top VCs. Profitable and growing
If you want a place where you own real outcomes, not just tickets, you'll fit in.
Why you should join Tapcart, when you have a sea of other options?
- You want to work with colleagues who have high standards and who love building beautiful, performant software
- You prefer the dopamine of working on software that will get into hundreds of millions of users' hands, vs working on enterprise, forward-deployed software
We deeply care about using AI in our work. Don't proceed with applying if:
- You don't love agents / don't use them daily
- You don't value craft and cannot speak to software that inspires you
What you’ll be working on at Tapcart
- Architect and ship core product that feels durable, fast and clean. Work across multiple stacks to deliver impact.
- Design our proactive AI agent orchestration layers used by thousands of high growth brands
- Prototype new interaction patterns for human-agent collaboration
- Raise our bar for engineering craft, help with recruiting, and hold the line on quality
- Dogfood the platform and our apps every day :)
You'll be a true owner, from prototype to production, and work side‑by‑side with the CEO, design, and key stakeholders, all while staying close to merchants to deliver value early and iterate quickly.
Qualifications
- 5+ years of engineering and product work
- Demonstrated skills across frontend, backend and database layers
- A Github that is more green than black
Salary Range
$175,000 - $350,000 - we pay for exceptional
Benefits
Competitive salary and equity. Medical, dental, vision. 401(k). Flexible PTO. Remote-friendly. Home office stipend. Quarterly merchant stipend. Lots of swag drops
Compensation: $175K - $350K
Company stack
This posting doesn’t list technologies. These are the ones Tapcart Inc. uses across its other roles.
