Senior Backend Developer - (NodeJS)

General Details: 

• Fully remote position.
• Working hours (40 hours/week any timezone) 
• Employment type: Contractor.
• Compensation in USD.

The Backend Developer will build, test, and deploy serverless functions and data integrations, primarily using AWS Lambda, Step Functions, and DynamoDB.

Key Responsibilities:

• Serverless Function Development: Build and maintain serverless functions in AWS Lambda, with a focus on data processing and integration with third-party systems like Shopify, Xero, and Salesforce.
• Data Management and Caching: Implement data management (i.e. Redis, DynamoDB) solutions for optimized data management and caching.
• API Development: Develop robust APIs to interface between the front end (NextJS) and back end, managing data transfers, business logic, and validation.
• Data Integrity & Security: Ensure data integrity and security across integrations, focusing on secure data transfer protocols, error handling, and resilience in distributed systems.

Qualifications:

• 5+ years of experience with NodeJS for serverless development.
• Strong expertise in AWS serverless services like Lambda, DynamoDB, and API Gateway.
• Hands-on experience in API-first development and microservices architectures.
• Experience with AWS Data Stores (e.g. DynamoDB), including caching strategies and performance optimization.
• Understanding of MACH principles, focusing on efficient data handling and integration with front-end and third-party systems.
• Advanced English proficiency is a must (C1/C2).
• Bachelor's Degree in Computer Science or equivalent work experience.