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Full Stack Developer (Shopify/Hydrogen) at Lago in Serbia, Serbia
Skills
Job Description
Job Title: Full Stack Developer (Shopify/Hydrogen)
Location: Remote
Schedule: 9am - 5pm Eastern Standard Time
Salary Range: Negotiable based on experience
Our Partner is a US-based e-commerce retailer operating multiple storefronts. They run lean: operational efficiency matters more than scale. Their architecture is custom headless: Shopify Hydrogen (React Router) for storefronts, Algolia for search, Storyblock for CMS, and a mature Django monolith handling ERP/PIM/CRM functions.
They're not a "standard" Shopify setup - they require custom middleware, API integrations, or creative workarounds. We're seeking a pragmatic Full Stack Developer to navigate this gap: someone who can either build the solution or knows when to escalate for architectural discussion.
Key Responsibilities
Hydrogen & Frontend Development
- Build and maintain fully custom Shopify Hydrogen storefronts using React Router, implementing complex commerce features and headless integrations
- Implement responsive UIs using HTML, CSS, and modern React; own frontend performance across all storefronts
- Manage migrations from legacy frontends (one Shopify Liquid, two Django-based) to Hydrogen with data integrity and minimal business disruption
- Debug and optimize the full data flow from React components through GraphQL to backend systems
Backend Integration & API Work
- Extend and maintain Python/Django code powering GraphQL API integrations between Shopify and our internal PIM/ERP/CRM monolith
- Build custom middleware and integrations when "standard" Shopify features don't work with our headless stack (e.g., custom feed generators for syndication, Algolia reindexing logic)
- Modify data exchange layers and API endpoints as business requirements evolve
- Navigate and enhance monolithic Django codebase without breaking existing functionality
Infrastructure & Deployment
- Manage software-defined infrastructure for Hydrogen deployments—build CI/CD pipelines, configure environments, and automate releases to Oxygen or similar edge platforms
- Own the deployment toolchain from local development through production
- Troubleshoot deployment and infrastructure issues across the stack
Translation & Problem-Solving
- Translate ambiguous business requests ("we need Pinterest syndication," "can we change how search works?") into technical approaches—assessing whether this is a quick tweak, custom integration, or architectural discussion
- Identify when requirements touch core architecture, involve significant data migration, or have business implications that need CTO input; escalate strategically rather than habitually
- Communicate technical constraints to non-technical stakeholders without being dismissive or overly technical
Must-Haves (Non-Negotiable)
- Strong frontend proficiency in HTML, CSS, and modern React
- Hands-on experience with Shopify Hydrogen (React Router-based), Storefront API, and headless commerce architecture
- Solid Python skills with Django experience; comfortable navigating monolithic codebases and API integrations
- Experience with CI/CD pipelines and deploying to serverless/edge platforms
- Experience with Shopify's GraphQL APIs (Admin and Storefront); ability to write, debug, and optimize complex queries
- Demonstrated ability to self-direct on clear technical tasks while recognizing when to escalate ambiguous requirements or architectural trade-offs
- Strong English communication skills; capable of explaining technical constraints to non-technical team members
- Full-time availability (40 hours/week)
Nice-to-Haves
- Experience working in "Shopify-but-not-really-Shopify" environments where standard features required custom implementations
- Experience migrating Liquid storefronts to Hydrogen
- Experience managing large-scale product catalogs (100K+ SKUs) and SEO-sensitive migrations
- Familiarity with feed syndication, search integration (Algolia), or headless CMS (Storyblok) workflows
- React Router experience outside Hydrogen contexts
Ideal Candidate Profile
- Pragmatic problem-solver: You figure out how to make things work within real constraints. You don't default to "that won't work" or immediately escalate every obstacle—but you also don't spin wheels for days when a conversation would help.
- Full-stack fluency: You trace issues across the entire stack—from React components through GraphQL queries to Django backend logic—and implement end-to-end solutions.
- Judgment on autonomy: You know the difference between "I can handle this" and "I should discuss this first." You escalate strategically, not out of insecurity or habit.
- Adaptable to ambiguity: You receive "we need X" without a spec, ask the right clarifying questions, and either implement or flag complexity appropriately.
- Ecosystem navigator: You understand that "Shopify" in a Hydrogen + Algolia + Storyblok context is very different from "Shopify" in a Liquid theme context, and you can bridge that gap for stakeholders.
- Mentee-ready: You can work independently but recognize this is the second engineering role at the company; you're comfortable being the "reverse half" of a mentor relationship with the CTO.
Tech Stack
Shopify Hydrogen (React Router)
React / HTML / CSS
Python / Django
PostgreSQL
GraphQL (Shopify Admin & Storefront APIs)
Algolia (Search)
Storyblok (CMS)
CI/CD & Deployment (Oxygen / edge platforms)
Custom API integrations
Remote Work: Work from anywhere—our team is global, and we value work-life balance.
Growth Opportunities: As a key player i you’ll have the chance to shape your role and grow with us.
Innovative Culture: Join a team that is passionate about leveraging data to solve challenges and drive success in a rapidly evolving market.
As part of our recruitment process, all candidates are kindly asked to read, understand, and agree to Lago’s Confidentiality and Non-Circumvention Agreement. This ensures a respectful and professional experience for everyone involved.