Senior Integration Engineer

About us:

Working at Tech Holding isn't just a job, it's an opportunity to be a part of something bigger. We are a full-service consulting firm that was founded on the premise of delivering predictable outcomes and high-quality solutions to our clients.  Our founders and team members have industry experience and have held senior positions in a wide variety of companies – from emerging startups to large Fortune 50 firms – and we have taken our combined experiences and developed a unique approach that is supported by the principles of deep expertise, integrity, transparency, and dependability.

The Role:

We're seeking a Senior Integration Engineer to lead the modernization of our e-commerce data infrastructure. This critical role focuses on building real-time integrations between our NetSuite ERP and Shopify Plus e-commerce platform using the Celigo iPaaS. You'll design and implement event-driven integration flows that eliminate overselling, accelerate order processing, and provide real-time data synchronization across our core business systems. This role is essential to decommissioning our legacy middleware and establishing a modern, scalable integration architecture. This is hands-on integration development work. You'll spend 80% of your time building Celigo flows, 15% writing NetSuite customizations, and 5% configuring Shopify APIs.

• Design and build event-driven integration flows in Celigo for real-time inventory synchronization between NetSuite and Shopify
• Develop bidirectional order sync integrations to push Shopify orders into NetSuite for fulfillment and financial reconciliation
• Implement complex data transformation and mapping logic to ensure data integrity across systems
• Build error handling, retry logic, and idempotency controls for mission-critical data flows
• Configure monitoring, logging, and alerting systems to enable proactive issue detection
• Write SuiteScript 2.0 code to implement validation rules, custom workflows, and import processing logic
• Develop RESTlets and custom endpoints to support integration requirements
• Design and implement data integrity controls within NetSuite's import workflows
• Configure Shopify webhooks for inventory updates, order creation, and customer data changes
• Integrate with Shopify REST and GraphQL APIs for product, inventory, and order management
• Implement proper webhook handling with authentication, validation, and idempotency
• Conduct technical audits to identify all integration points requiring migration
• Document integration architecture, data flows, and operational runbooks
• Implement comprehensive observability (monitoring, alerting, logging) for all integration flows
• Conduct integration testing, performance testing, and User Acceptance Testing (UAT) coordination
• Create technical documentation and train operations teams on new workflows

• 3+ years of hands-on experience building production integration flows in Celigo iPaaS
• Deep knowledge of Celigo's connectors, flow builder, mapping tools, and error handling capabilities
• 3+ years of NetSuite development experience with strong SuiteScript 2.0 skills
• Hands-on experience building RESTlets, scheduled scripts, user event scripts, and workflows
• Deep understanding of NetSuite data model (customers, items, sales orders, inventory, locations)
• Knowledge of NetSuite's role-based permissions, saved searches, and customization framework
• 2+ years working with Shopify APIs (REST, GraphQL, Admin API, Storefront API)
• Experience configuring and consuming Shopify webhooks for real-time events
• Understanding of Shopify data model (products, variants, inventory, orders, customers, fulfillments)
• Knowledge of Shopify Plus features and API differences from standard Shopify
• Strong understanding of event-driven architecture and real-time data synchronization
• Experience designing robust error handling, retry logic, and dead letter queue patterns
• Knowledge of idempotency, eventual consistency, and distributed system challenges
• Ability to design data validation rules and integrity controls
• Understanding of API design principles, RESTful patterns, and webhook best practices
• Experience with integration monitoring, observability, and alerting strategies
• A good understanding of e-commerce workflows: inventory management, order fulfillment, returns processing

• Celigo certification (Integrator or Architect level)
• NetSuite certifications (SuiteFoundation, Administrator, Developer)
• Experience with other iPaaS platforms (Workato, Boomi, MuleSoft, Dell Boomi)
• Knowledge of ETL tools and data migration methodologies
• Experience with Shopify Flow or Shopify Plus Scripts

• Shopify Liquid templating and theme development (basic level)
• Experience with Digital Asset Management (DAM) platforms like Cloudinary, Damvia, and Bynder

What We Offer:

• Remote and flexible work environment.
• Exposure to enterprise clients and transformative cloud projects.
• Opportunity to directly impact Tech Holding's growth and client success.
• Competitive compensation package.

Tech Holding is proud to be an Equal Opportunity Employer and is committed to fostering a diverse and inclusive workplace. We welcome applicants from all backgrounds and experiences, and we consider qualified applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, disability, veteran status, or any other legally protected characteristic. If you require accommodation in the application process, please contact our HR