Independent Engineer for Codebase

# Senior Full-Stack Engineer – Next.js, Node.js, AWS & API Integrations We are looking for an experienced Senior Full-Stack Engineer who can work independently, quickly understand an existing codebase, and make sound technical decisions with minimal supervision. ## Required Skills * TypeScript * React * Next.js * Node.js * PostgreSQL * REST API development and integration * OAuth 2.0 / JWT * Webhooks * Docker * Git / GitHub * AWS * CI/CD ## API & Integration Experience Strong practical experience with: * Third-party API integrations * REST APIs * Authentication and token management * JSON * API pagination * Rate limiting * Retry and error handling * Webhooks * Asynchronous processing * Data mapping and transformation * OpenAPI / Swagger ## AWS Experience Hands-on experience with several of: * Lambda * ECS / Fargate * RDS * S3 * API Gateway * SQS * EventBridge * Secrets Manager * CloudWatch * IAM ## Good to Have * Python * AI / LLM API integration * OCR / document processing * Terraform / AWS CDK * Multi-tenant SaaS experience * ERP / CRM / WMS integrations * Event-driven architecture We particularly value strong problem-solving ability, independence, clean code, good communication, and the ability to learn unfamiliar systems quickly. Please apply with examples of relevant API, SaaS or AWS projects you have personally worked on.