eCommerce Full Stack Developer

Posted 4 weeks ago

Worldwide

Summary

We’re looking for a Full Stack Developer who has experience with frontend conversion, backend automation, and data-driven optimization. You’ll build high-performing landing pages and checkout experiences, set up accurate tracking and analytics across our eCommerce stack, and script the automations that keep orders, data, and insights flowing on a cloud-native AWS infrastructure. What You’ll Do • Build and maintain Shopify store and standalone landing pages using HTML, CSS, and JavaScript (pixel-perfect from Figma). • Craft high-converting landers, product pages, and promotional microsites with responsive design and cross-browser compatibility. • Own the frontend inside CheckoutChamp: style checkout flows, order bumps, and upsell pages to match brand guidelines and maximize CRO. • Optimize page load speed, Core Web Vitals, and mobile experience. • Implement and maintain client-side and server-side tracking across Shopify, CheckoutChamp, and custom landers: Google Tag Manager DataLayer, GA4, and other ad platform scripts. eCommerce Development & Customization • Extend Shopify functionality using Liquid templates, Storefront API, and custom apps. • Integrate funnels with third-party APIs. • Build and manage webhook-driven workflows between Shopify, CheckoutChamp, and backend systems. Automation & Scripting • Write automation scripts in Node.js, Python, or PHP to handle worflows across the organization. • Build lightweight internal tools that replace manual spreadsheet work. AWS & Infrastructure • Deploy and maintain services on AWS: Lambda, API Gateway, S3, RDS, CloudWatch, SQS/SNS, EC2 • Apply security best practices for handling customer data, PII, and payment information. Collaboration & Version Control • Use Git for all development. feature branches, PRs, code reviews, and CI/CD pipelines. • Partner closely with media buyers, CRO specialists, and marketing ops to translate business needs into technical implementations. • Document all tracking setups, automation flows, and integration architecture. Must-Have Qualifications • 3+ years of full-stack or frontend-leaning development experience in web and ecommerce. • Strong frontend fundamentals: HTML5, CSS3, responsive design, and vanilla JavaScript - you can build a lander from scratch without a framework. • Hands-on experience with Google Tag Manager, GA4, Meta Pixel, and first-party data layers. • Experience with Shopify (Liquid templating, REST/GraphQL APIs, webhooks) • Proficiency in at least two scripting languages: Node.js / Python / PHP. You are comfortable writing API bridges, cron jobs, and data transformation scripts. • Working knowledge of AWS • Fluent in Git Nice-to-Have • Experience with CheckoutChamp. • Exposure to CI/CD (GitHub Actions, Bitbucket Pipelines) • Experience SQL Optimization. What’s in it for you • Build systems, automations, and eCommerce experiences that directly impact a fast-growing DTC business • Work closely with founders and business leaders, giving you real ownership and influence over technical decisions • Enjoy a fully remote work environment with the flexibility and autonomy to do your best work • Competitive salary package based on experience, technical expertise, and overall contribution • Be part of a high-performing team focused on scaling products, improving operations, and building solutions that drive measurable business growth

  • More than 30 hrs/week
    Hourly
  • 6+ months
    Duration
  • Expert
    Experience Level
  • $20.00

    -

    $40.00

    Hourly
  • Remote Job
  • Ongoing project
    Project Type
Skills and Expertise
Mandatory skills
Shopify Development
Design Enhancement
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:3 weeks ago
  • Interviewing:
    2
  • Invites sent:
    0
  • Unanswered invites:
    0
About the client
Member since Dec 8, 2016
  • United States
    Flushing11:27 PM
  • $52K total spent
    45 hires, 10 active
  • 1,723 hours

Explore similar jobs on Upwork

Ecommerce exicutiveFixed-price‐ Posted 3 weeks ago
Amazon Seller Central
Shopify
Shopify Lead Magnet IntegrationFixed-price‐ Posted 3 weeks ago
Shopify
HTML
Shopify Templates
JavaScript

How it works

  • Post a job icon
    Create your free profile
    Highlight your skills and experience, show your portfolio, and set your ideal pay rate.
  • Talent comes to you icon
    Work the way you want
    Apply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
  • Payment simplified icon
    Get paid securely
    From contract to payment, we help you work safely and get paid securely.
Want to get started? Create a profile

About Upwork

  • Rating is 4.9 out of 5.
    4.9/5
    (Average rating of clients by professionals)
  • G2 2021
    #1 freelance platform
  • 49,000+
    Signed contract every week
  • $2.3B
    Freelancers earned on Upwork in 2020

Find the best freelance jobs

Growing your career is as easy as creating a free profile and finding work like this that fits your skills.

Trusted by

  • Microsoft Logo
  • Airbnb Logo
  • Bissell Logo
  • GoDaddy Logo