Senior Backend Engineer, Business Technology

Ernesta•New York, NY

12h

About The Position

The Ernesta business technology team builds the technology solutions that power the end-to-end business operation of an industry-leading custom rug purchasing experience. This includes a custom-built order management system, manufacturing workflow tools, and delivery management systems. These systems work together to power a self-service-first purchasing experience that exceeds customer expectations before and after their rug purchase. As a Senior Backend Engineer, you will be a foundational member of the engineering team building Ernesta’s in-house order management system from the ground up. You will own the backend architecture for transactional systems that manage order lifecycles, fulfillment workflows, inventory, and integrations with Shopify, Salesforce, and third-party logistics providers. You will be designing and building the core systems that run the business.

Requirements

5+ years of backend software engineering experience with strong proficiency in Node.js and relational database such as PostgreSQL
Experience designing and building transactional data models for systems that manage orders, inventory, fulfillment, or similar operational workflows
Hands-on experience building and maintaining integrations with external platforms (e.g., external APIs, payment processors)
Strong understanding of relational database design: normalization, indexing, constraints, and migration strategies
Experience with event-driven architecture patterns (message queues, webhooks, pub/sub) for system-to-system communication
Experience building and documenting RESTful APIs
Familiarity with cloud infrastructure (AWS or GCP), containerization (Docker), and CI/CD tooling
Ability to work autonomously in a small team environment where you own significant portions of the system end to end
Strong communication skills to collaborate with product, operations, and business stakeholders

Nice To Haves

Domain experience in order management, e-commerce fulfillment, supply chain, or manufacturing systems is strongly preferred

Responsibilities

Design, build, and maintain backend services for Ernesta’s custom order management system using Node.js and PostgreSQL
Own the data model and transactional logic for core business entities: orders, line items, fulfillments, inventory, customers, and product SKUs
Build and maintain integrations with external systems including Shopify, Salesforce, and third-party logistics and fulfillment providers
Implement order lifecycle workflows: creation, confirmation, production, fulfillment, shipping, delivery, and returns
Design RESTful APIs that serve internal tools and connect to the broader e-commerce ecosystem
Collaborate closely with the Business Systems Product Manager to translate domain model specifications and business rules into reliable, performant backend systems
Translate product specifications — including entity definitions, state machines, and business rules — into physical database schemas, migration strategies, and API contracts
Ensure data integrity across systems, defining source-of-truth sync logic and integration contracts between the ERP and external platforms
Write automated tests and contribute to CI/CD pipelines to maintain code quality and deployment reliability