# Full-Stack Engineer (Lead Product Engineer)

> Activate Talent · Philippines (Remote) · — · Posted 2025-11-06

**Workplace:** remote

**Department:** 029

## Description

**Type:** Full-time | long-term independent contractor

**Reports to:** CTO

**Location:** Remote / (EST, CST) time zone

**About the client**  
A marketing agency specializing in **e-commerce growth and conversion optimization**, they help brands streamline the **customer journey** to boost sales and lifetime value. Their services focus on improving site conversion, reducing cart abandonment, and increasing repeat purchases through targeted creative and technical strategies. With an emphasis on data-driven impact, they present clear metrics like higher conversion rates, more repeat buyers, and stronger LTV growth.  
  
**About the role**  
You're the one in charge to build and scale the first production version of our AI-powered Marketing Intelligence Layer for Shopify brands. You’ll turn prototypes into robust, secure, and fast web applications that integrate deeply with Shopify, Klaviyo, and future MarTech tools.

**Responsibilities**

-   Design, develop, and maintain the main app (front-end + back-end)
-   Integrate with Shopify Admin API, Klaviyo API, and future partner APIs
-   Implement data ingestion flows and user authentication (OAuth 2.0)
-   Build dashboards and insight views that deliver actionable recommendations
-   Work closely with the CTO and AI team to implement API endpoints for LLM interaction
-   Set up CI/CD pipelines, testing, and documentation

## Requirements

**Required Skills & Experience**

-   Frontend: React, Next.js (or Remix), TypeScript, TailwindCSS
-   Backend: Node.js + Express or NestJS, PostgreSQL (via Prisma ORM)
-   DevOps: Docker, GitHub Actions, AWS (Lambda, ECS, or Amplify)
-   Integrations: Experience with Shopify GraphQL Admin API and Klaviyo REST API
-   Data: Understanding of marketing KPIs (LTV, CAC, ROAS, retention)
-   3–5 years building production SaaS applications with multi-tenant architecture

**Bonus:** experience with Stripe Billing, auth0, or Supabase Auth

**What Success Looks Like**

-   V1 of the product deployed to real Shopify stores
-   <1s API response time for recommendations
-   Stable connection with Shopify/Klaviyo even under heavy usage

## Apply

[Apply at Activate Talent](https://apply.workable.com/careersactivatetalent/j/69683C5C78/apply)

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