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# Sr. API Developer

- **Company:** DEREX Technologies, Inc.
- **Location:** Jersey City, NJ, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, Application Performance Management, Cloud Engineering, Code Review, Continuous Integration, DevOps, Enterprise Messaging Systems, MongoDB, Node.Js, Scrum Methodology, Cloud Services, Software Engineering, TypeScript, Enterprise Software Applications, Spring Cloud, GitHub Copilot, Large Language Models, Prompt Engineering, Software Security, Database Performance, Generative AI, Git, Cloudformation, Event Driven Architecture, AI Platforms, Kubernetes, Data Lineage, NestJS, Restful APIs, Terraform, Guidewire, Docker, Microservices
- **Published:** July 8, 2026
- **Apply:** https://jobs.smartrecruiters.com/DerexTechnologiesInc/744000136497834-sr-api-developer

## About the Role

* Bachelor's degree in Computer Science, Engineering, or a related field.
 * 5-8 years of software development experience.
 * Strong problem-solving, analytical, and communication skills.
 * Experience working in Agile development teams
 * Strong experience in NestJS, Node.js, and TypeScript
 * Hands-on experience with MongoDB
 * Experience with AWS Cloud services and cloud-native application development
 * Good understanding of Microservices Architecture and REST APIs
 * Experience with Docker, Kubernetes, and CI/CD pipelines
 * Experience using Generative AI tools (e.g., GitHub Copilot, Amazon Q, OpenAI APIs, Claude) to improve development productivity and build AI-enabled solutions
 * Familiarity with Prompt Engineering, AI-assisted development, and LLM integrations
 * Knowledge of application security, Git, Agile methodologies, and DevOps practices
 * Insurance Domain Experience
 * Experience in the Mortgage Insurance domain is preferred.
 * Experience working with insurance platforms or enterprise policy systems is an advantage., * Experience with event-driven architectures and messaging platforms.
 * Knowledge of Infrastructure as Code (Terraform/CloudFormation).
 * Exposure to Guidewire or other insurance platforms.
 * Experience integrating AI services, vector databases, RAG, or AI agents into enterprise applications.
 * Passion for continuous learning and adopting emerging AI technologies.

## Description

* Design, develop, and maintain applications using NestJS and Node.js.
 * Build scalable RESTful APIs and microservices for enterprise insurance applications.
 * Design and optimize MongoDB data models and database performance.
 * Develop and deploy cloud-native applications on AWS.
 * Able to develop golden records, mapping, data lineage, ontology services using Mongo DB and NestJS.
 * Integrate Generative AI capabilities into applications where applicable.
 * Collaborate with architects, product owners, QA, and DevOps teams throughout the software development lifecycle.
 * Participate in technical design discussions, code reviews, and sprint planning.
 * Write clean, maintainable, and well-tested code following engineering best practices.
 * Troubleshoot production issues and continuously improve application performance and reliability.


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