Senior Full-Stack Web Developer: Shopify Plus, AI, and Custom API Integration Expert

I’m helping Ballpoint Marketing, LLC find a top candidate to join their team full-time for the role of Senior Full-Stack Web Developer: Shopify Plus, AI, and Custom API Integration Expert.

You will architect innovative web solutions, driving growth and shaping future digital experiences across multiple platforms.

Compensation:

USD 3.5K - 5K/month

Location:

Remote (specific timezones)

Mission of Ballpoint Marketing, LLC:

"To help businesses generate predictable, high-quality leads through performance-driven direct mail by combining data, strategy, and execution—without the complexity, waste, or guesswork traditionally associated with mail marketing."

What makes you a strong candidate:

• You are an expert in JavaScript, HTML5, CSS3.
• You are proficient in Zapier, UX/UI, Shopify Plus, Shopify Liquid, React.js, REST API, PostgreSQL, Performance optimization, Node.js, NestJS, MySQL.
• English - Fully fluent

Responsibilities and more:

You will be responsible for helping us maintain and add new features to our current website and process flow, including but not limited to an entire new site creation, implementing API's and tracking for our customers, gamification, and automations into our direct mail system. Direct knowledge with shopify plus is a must as our site is currently hosted there.

Our sister company will also need help building a call center platform for our agents to utilize that will be managed by you and our team.

Below are some of the requirements needed for this position. Even if you don't have them all, we invite you to apply!

* Senior-level full-stack web developer with 5–8+ years of experience.

* Expert in HTML5, CSS3, and modern JavaScript (ES6+).

* Strong React experience, preferably with Next.js.

* Advanced responsive UI/UX development skills.

* Proficient with Tailwind CSS or similar modern CSS frameworks.

* Backend development with Node.js (Express or NestJS) and/or PHP (Laravel).

* Design and development of REST and GraphQL APIs.

* Expert in API integrations, including building and consuming APIs.

* Experience with webhooks, background jobs, and event-driven systems.

* Database design and management with PostgreSQL, MySQL, and MongoDB.

* Implementation of authentication systems (OAuth2, JWT, SSO).

* Shopify Plus production store experience.

* Shopify Liquid templating and development.

* Knowledge of Shopify Admin and Storefront APIs.

* Development of Shopify Functions and custom checkout extensions.

* Headless Shopify development and custom Shopify app creation.

* Stripe API integration.

* Integration of CRM and financial platforms such as HubSpot and QuickBooks.

* AI implementation, including OpenAI/LLMs, prompt engineering, and production use.

* AI-powered automation and workflow development.

* Familiarity with vector databases and RAG systems (preferred).

* Experience with Zapier/Make and building custom solutions when needed.

* Git-based version control using GitHub or GitLab.

* CI/CD pipeline setup and deployment workflows.

* Docker fundamentals.

* Cloud hosting experience (AWS, Vercel, or similar platforms).

* Performance optimization and monitoring.

* Web security best practices, including API security, RBAC, and rate limiting.

* Ability to manage and prioritize projects across multiple companies.

* Experience collaborating directly with founders and executives.

* Strong written and spoken English.

* Excellent documentation and communication skills.

* Ability to work independently in a full-time role.