DOOR3

Sr Fullstack Software Engineer

DOOR3 Responds Quickly
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We are seeking a Senior Full-Stack Software Engineer to join a high-impact project building a next-generation unified pharmacy e-commerce platform. The platform combines OTC commerce and prescription workflows within a single customer journey, following a headless commerce architecture with a React-based storefront and Node.js backend, integrating with existing pharmacy systems (PrimeRx, POS, Admin Portal). This role is critical in delivering an MVP within a ~28-week roadmap in an Agile environment.

 

Required Skills & Experience

 

Core Engineering

  • 6+ years in software development; Senior-level full-stack background
  • Node.js / TypeScript โ€” 4+ years (backend APIs, services, integrations)
  • React.js โ€” 4+ years (modern React, hooks, state management)
  • Strong proficiency in JavaScript / TypeScript

 

Architecture & Design

  • Ability to operate close to architect level: evaluate tradeoffs, define implementation patterns, and guide other developers
  • Strong understanding of API design, service-oriented architecture, and integration patterns
  • Experience with authentication/authorization and secure development practices
  • Relational database experience, preferably PostgreSQL (schema design, query optimization, migrations)
  • Ensure performance, scalability, and security across the platform (including PII and healthcare-sensitive data)

 

E-Commerce & Integrations

  • Experience designing scalable, production-grade web applications โ€” ideally e-commerce, marketplace, ordering, checkout, or transactional systems
  • Comfortable integrating with third-party systems: payment processors, fulfillment providers, CRM/ERP, CMS platforms
  • Understanding of cart & checkout flows, order lifecycle, and payment integration

 

Delivery & Collaboration

  • Strong engineering discipline: clean code, automated testing, CI/CD, code reviews, documentation
  • Experience working in Agile/Scrum teams; active participation in sprint planning, demos, and retrospectives
  • Ability to work closely with Solution Architect, Engineering Leadership, Business Analysts, QA engineers, and external client teams
  • Ability to work closely with product, UX, and business stakeholders to translate requirements into technical solutions
  • Client-facing communication skills (English Upper-Intermediate+)

 

Ownership & Mentorship

  • Strong ownership mindset โ€” takes full accountability for features from design through to production
  • Proactive problem-solver, comfortable operating in ambiguity and validating technical approaches
  • Ability to support and mentor mid-level engineers
  • Contributes to improving engineering processes and standards

 

Desirable Skills & Experience

  • Hands-on experience with headless commerce frameworks (Medusa.js, Shopify Hydrogen, CommerceTools, or similar)
  • Experience building e-commerce capabilities: catalogs, carts, checkout, promotions, pricing, inventory, customer accounts, order workflows
  • Familiarity with modern React architecture: component libraries, SSR frameworks, design system implementation
  • Cloud platforms โ€” AWS preferred
  • GraphQL APIs and event-driven architectures
  • CI/CD pipelines and DevOps practices
  • Experience in healthcare, pharmacy, or regulated domains
  • Experience optimizing performance in e-commerce or high-traffic applications

 

Additional Notes

  • Platform technology is not fully locked โ€” comfort with a technical discovery and validation phase is essential
  • Strong emphasis on integration-heavy architecture; standalone product experience alone is not sufficient
  • Healthcare context implies sensitivity to PII, data privacy, and complex workflows
  • MVP-first mindset: ability to prioritize, iterate, and operate comfortably with evolving requirements
  • Time zone overlap with US-based stakeholders may be required

Required skills experience

Node.js 5 years
React.js 5 years

Required languages

English B2 - Upper Intermediate
Ukrainian Native
Published 30 April
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