Full-Stack Developer – Websites (On Call - Remote)

Description ICF is seeking a On-call Full-Stack Developer to provide support for a portfolio of provider search and discovery websites as well as e-commerce and rebate platforms. This role requires a flexible engineer who can work across multiple technology stacks—including Shopify/Liquid, Node.js/Express, PostgreSQL, and AWS, as well as Next.js (React), Azure-hosted APIs, and SQL Server—while delivering reliable, high-quality solutions that keep this portfolio of sites running effectively. The successful candidate will bring strong full-stack development experience across both modern JavaScript frameworks and Shopify’s ecosystem, combined with solid cloud and database skills spanning AWS and Azure. They will be comfortable owning work end-to-end—from diagnosing production issues to shipping new features—across platforms with different business contexts. This is a remote, on-call role that provides flexibility to work from 0 to 20 hours per week. About On-Call Employment With ICF Given the seasonal or project-specific nature of this project, ICF often hires professionals as “On-Call” employees. On-Call employees work on an as-needed basis and are not guaranteed for a minimum number of hours. On-Call employees may work on concurrent projects outside of their ICF assignment (as long as their outside work does not create a conflict of interest with the work they do for ICF). When work is available, ICF will contact the On-Call employee with an assignment. On-Call positions are benefits-eligible based on hours worked. This position is not eligible for immigration sponsorship.

Key Responsibilities

• Support, maintain, and enhance websites built on Shopify with Liquid templating and custom Node.js/Express backend integrations, including cart, checkout, and rebate processing flows.
• Develop and maintain features on the provider search and discovery websites using Next.js (React) with server-side rendering, connecting to Azure-hosted APIs and data services.
• Write, optimize, and troubleshoot queries across PostgreSQL and SQL Server databases, ensuring data integrity and query performance.
• Diagnose and resolve production issues across the website portfolio quickly and effectively, with clear communication to stakeholders throughout the incident lifecycle.
• Collaborate with project managers to implement new features, UI enhancements, and QA tests across the website portfolio.
• Manage cloud infrastructure tasks within AWS and Azure environments, including deployments, monitoring, and related operational support.
• Build and maintain CI/CD pipelines and deployment workflows across the website portfolio.
• Maintain clear technical documentation for systems, data models, integration patterns, and deployment procedures across the website portfolio.
• Perform other duties as assigned.

Basic Qualifications

• 5+ years of full-stack web development experience.
• Hands-on Shopify development experience, including Liquid templating, Shopify CLI, theme customization, and app or API integrations.
• Proficiency in Node.js and Express for RESTful backend API development.
• Experience building production applications with Next.js and React, including server-side rendering (SSR) and static generation (SSG) patterns.
• Strong SQL skills with experience in PostgreSQL and/or Microsoft SQL Server.
• Demonstrated experience deploying and operating workloads on AWS (EC2, S3, RDS, Lambda, or equivalent services) and/or Azure (App Service, Azure SQL, Blob Storage, or equivalent).
• Experience with CI/CD pipelines (GitHub Actions, Azure DevOps, or comparable), Git-based version control workflows, and JIRA for transparent task tracking and visibility to project managers.

Preferred Skills/Experience

• Shopify Plus experience, including headless commerce or custom storefront architectures.
• Familiarity with Azure-specific data and integration services (Azure Functions, Azure Cognitive Search, Azure Data Factory, Cosmos DB, or Azure DevOps pipelines).
• Experience with e-commerce domain concepts including rebate processing, promotional pricing engines, product catalog management, and order management.
• Experience building or maintaining provider directory, search, or discovery platforms with faceted filtering, geolocation, or relevance ranking.
• Knowledge of data-driven web application patterns: API-first architecture, server-side caching, and Azure-based data pipelines.
• Familiarity with monitoring and observability tooling (Datadog, Azure Monitor, AWS CloudWatch, Sentry, or similar).
• Experience supporting multiple distinct platforms or products simultaneously in an on-call or shared-services engineering model.

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