Top 480 Pos Developer Jobs

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Shopify Experienced Middleware Developer (Contract) - North America

Anatta Design
Remote

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Job Details

Part-time
$80 - $120 an hour

Qualifications

Systems integration
Software engineering
XML
Writing skills
Data structures
English
E-commerce
Enterprise software systems development
Version control systems
SaaS platforms
Integration with Third-Party Services (system development)
GraphQL APIs
JSON
GraphQL
DevOps automation
Database software proficiency

Full Job Description

Overview

Anatta is a leading Shopify Plus partner building enterprise-grade commerce ecosystems for ambitious brands. We don't just implement—we architect solutions that solve real business problems. Our clients choose us when complexity demands expertise, and when the stakes are too high for generic execution.

We're looking for an expert Middleware Developer to act as the technical bridge between the Shopify Plus ecommerce ecosystem and backend enterprise services. In this role, you will design, build, and maintain the integration layer that ensures seamless data synchronization across different business systems. As a key member of our engineering team, you'll ensure our solutions are performant, reliable, and perfectly aligned with our clients' business needs.

You will be responsible for extracting, transforming, and loading (ETL) complex datasets, ensuring that data flowing between Shopify and internal systems (ERP, CRM, WMS, POS) is accurate, timely, and formatted correctly.

Responsibilities

Integration Architecture: Design and develop scalable middleware solutions to connect Shopify with external enterprise systems (e.g., SAP, Oracle, NetSuite, Salesforce).
Middleware Experience: Must have hands-on experience with at least one of the following SaaS technologies: Mulesoft, Celigo, Workato, N8N, Pipe17, etc.
Data Transformation: Write robust code to ingest data from various sources, apply complex business logic to transform data formats (e.g., converting Shopify JSON payloads to SOAP/XML for legacy ERPs), and deliver it to the target system.
Shopify API Management: Utilize the Shopify Admin API (REST and GraphQL) and Storefront API to manage products, orders, customers, and inventory programmatically.
Workflow Automation: Automate data flows for critical business processes such as Order-to-Cash, Inventory Synchronization, and Shipment Updates.
Monitoring & Error Handling: Implement logging, alerting, and retry mechanisms to handle API rate limits, connection timeouts, and data validation errors without disrupting business operations.
Security & Compliance: Ensure all data in transit is encrypted and handled in accordance with PII and PCI compliance standards.

Requirements

Experience: 3+ years of backend development experience with a focus on middleware, iPaaS (e.g., Celigo, Mulesoft, Workato), or custom integration microservices.
Celigo experience is a must.
Shopify Expertise: Deep understanding of the Shopify API ecosystem. You must know the nuances of Shopify’s rate limiting, bulk operations, webhooks, and the transition between REST and GraphQL endpoints.
Data Handling: Proven ability to read, parse, and transform data structures. Mastery of JSON, XML, CSV, and SQL is essential.
Programming Languages: Strong proficiency in server-side languages such as Node.js or Laravel/PHP.
Enterprise Protocols: Experience working with enterprise data exchange protocols, including REST, SOAP, FTP/SFTP, and EDI.
Version Control: Proficiency with Git and CI/CD pipelines.
Integrations: Proven integrations with payment gateways, tax engines, loyalty/fraud platforms, ERP, Inventory, OMS.
Education: Degree or certification in software development.
Communication: Fluent writing and speaking in English.
Organization: Good organizational and documentation skills with a detail-oriented mindset.

Preferred Skills & Technologies

Experience with cloud functions (AWS Lambda, Azure Functions, or Google Cloud Functions) for serverless data processing.
Knowledge of queueing systems (RabbitMQ, Kafka, AWS SQS) to manage high-volume data spikes during flash sales.
Experience integrating with ERP’s, PIM’s, CDP’s, OMS’s, etc.
Knowledge of Latest Admin Direct API’s.
Experience in iPaaS and event-driven architectures.
Observability Implementation (New Relic/Datadog/Sentry, alerts, dashboards, SLIs/SLOs).
Knowledge of security best practices Tools & Stack (typical).
Node.js, PHP, Shopify Admin GraphQL, Webhooks, App Bridge.
CI/CD with GitHub Actions (or similar), Shopify Partners deploy.
Bonus to have familiarity with inventory management systems, loyalty programs, or other common retail technologies.

Soft Skills

Excellent problem-solving skills to analyze information appropriately and find the best solutions taking a balanced view to reach logical conclusions and make relevant decisions.
Organizational skills to establish efficient and appropriate plans for self and others and adapt quickly and effectively to unexpected changes whilst still ensuring objectives are met.

The duties and responsibilities described here are not a comprehensive list and the scope of the job may change as necessitated by business demands. Anatta Design reserves the right to revise the job description as circumstances warrant.

This is a contract position, the pay range is $80 - $120 USD(onshore) and $30-$60 USD (offshore) per hour. The hourly pay range listed is an estimate and may vary based on skills, experience, location, and project requirements. Final rates will be confirmed at the time of offer.

Compensation Transparency & Pay Philosophy
At Anatta Design, we believe in fair and competitive compensation based on location. We post salary ranges in compliance with state requirements for U.S.-based roles, ensuring transparency for candidates in those regions. If you are applying from outside the U.S., please note that our pay scales are adjusted based on the cost of living and market conditions in each country.

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