Senior Full Stack AI Developer - MERN

We are looking for a highly skilled Senior Full Stack Developer with strong hands-on experience in MERN stack development , Epic EHR/EMR integrations , and modern AI/GenAI technologies . The ideal candidate will be responsible for designing, developing, integrating, and maintaining scalable healthcare applications that interact with Epic and other healthcare systems. The candidate should have a strong understanding of healthcare interoperability standards such as FHIR and HL7 , along with experience working with APIs, clinical data, authentication, and secure healthcare integrations. In addition to strong full-stack engineering skills, the candidate should have practical hands-on experience with AI/GenAI , including integrating AI capabilities into applications, working with LLMs, AI APIs, prompt engineering, RAG, or AI-assisted workflows. The candidate must be comfortable taking ownership of technical assignments independently and participating in architecture and technical discussions the stakeholders.

Key Responsibilities:

1. Full Stack Development – MERN

• •Design, develop, and maintain scalable web applications using:
• •MongoDB
• •Express.js
• •React.js
• •Node.js
• •Develop reusable, maintainable, and secure frontend and backend components.
• •Build responsive and user-friendly healthcare application interfaces using React.
• •Develop scalable RESTful APIs and backend services using Node.js.
• •Implement appropriate application architecture, design patterns, validation, error handling, logging, and exception management.
• •Optimize application performance across frontend, backend, and database layers.
• •Participate in code reviews and ensure adherence to coding standards and engineering best practices.

2. Epic Integration & Healthcare Interoperability

• •Design and implement integrations between applications and Epic EHR/EMR .
• •Develop and consume Epic APIs and healthcare interoperability interfaces.
• •Work extensively with FHIR-based APIs and resources for exchanging healthcare information.
• •Understand and work with healthcare data such as:
• •Patient demographics
• •Patient/clinical records
• •Encounters
• •Appointments
• •Providers
• •Medications
• •Allergies
• •Diagnoses/conditions
• •Lab results
• •Clinical observations
• •Work with HL7 interfaces and healthcare integration workflows.
• •Understand Epic integration concepts such as FHIR APIs, SMART on FHIR, OAuth 2.0, and Epic App Orchard .
• •Build reliable workflows for retrieving, transforming, validating, and synchronizing healthcare data between Epic and external applications.
• •Handle API authentication, authorization, token management, error handling, retries, rate limits, and integration failures.
• •Troubleshoot and resolve issues across Epic and application integration layers.
• •Collaborate with healthcare domain experts, product teams, and client stakeholders to understand clinical workflows and integration requirements.

3. AI / Generative AI Development

• •Design and implement AI/GenAI capabilities within healthcare applications.
• •Work hands-on with LLMs and AI APIs to build practical business and healthcare use cases.
• •Experience integrating models/services from platforms such as OpenAI, Azure OpenAI, or equivalent is highly desirable.
• •Develop AI-powered features such as:
• •Intelligent search
• •Summarization
• •Clinical/document summarization
• •Natural-language interfaces
• •Knowledge assistants
• •Content generation
• •Intelligent classification
• •Data extraction
• •AI-powered workflow automation
• •Develop and optimize prompts and workflows using prompt engineering techniques.
• •Build RAG (Retrieval-Augmented Generation) solutions using appropriate vector databases/search technologies.
• •Understand concepts such as embeddings, vector search, context management, hallucination mitigation, and LLM evaluation.
• •Integrate AI capabilities securely into existing applications and APIs.
• •Evaluate AI-generated responses for accuracy, reliability, relevance, and safety.
• •Identify opportunities where AI can improve operational efficiency, user experience, and productivity.

4. Healthcare Security & Compliance

• •Develop applications following HIPAA and healthcare security best practices .
• •Ensure appropriate protection of PHI/PII throughout application and integration workflows.
• •Implement secure authentication and authorization mechanisms.
• •Work with OAuth 2.0, JWT, RBAC, and secure API practices .
• •Ensure sensitive healthcare data is appropriately protected in transit and at rest.
• •Follow secure coding practices and contribute to vulnerability remediation.
• •Understand the security implications of using AI/LLMs with healthcare data.
• •Ensure AI solutions are designed with appropriate controls around PHI, data privacy, access, logging, and auditability.

5. API & Integration Engineering

• •Design and develop scalable REST APIs and integration services.
• •Integrate Epic and other third-party healthcare systems.
• •Implement API validation, error handling, retries, logging, monitoring, and observability.
• •Build asynchronous and event-driven workflows where required.
• •Transform healthcare data between different formats and systems.
• •Troubleshoot API and integration issues across development, staging, and production environments.

6. Performance, Quality & Production Support

• •Identify and resolve application performance bottlenecks.
• •Optimize API response times, database queries, and frontend performance.
• •Troubleshoot production issues and perform Root Cause Analysis (RCA) .
• •Implement logging, monitoring, and alerting mechanisms.
• •Write unit, integration, and API tests.
• •Participate in production deployments and release activities.
• •Ensure applications remain stable, scalable, secure, and maintainable.

7. Collaboration & Technical Ownership

• •Work directly with the product team, engineering, healthcare, and business stakeholders.
• •Independently analyze requirements and convert them into technical solutions.
• •Participate in technical design and architecture discussions.
• •Provide effort estimates and identify technical risks and dependencies.
• •Collaborate with frontend, backend, QA, DevOps, product, and healthcare integration teams.
• •Mentor junior developers and provide technical guidance where required.
• •Take ownership of assigned features from requirement analysis through development, testing, deployment, and production support.

Must-Have Skills:

Full Stack Development

• •5+ years of professional software development experience .
• •Strong hands-on expertise in Node.js, React.js, Express.js, and MongoDB .
• •Strong JavaScript/TypeScript skills.
• •Excellent understanding of REST APIs and modern web application architecture.
• •Experience building scalable and maintainable backend services.

Epic & Healthcare Integration

• •Strong hands-on experience with Epic EHR/EMR integration .
• •Experience working with Epic APIs / FHIR APIs .
• •Strong understanding of HL7 and FHIR .
• •Experience with SMART on FHIR and OAuth 2.0 .
• •Understanding of healthcare data structures and clinical workflows.
• •Experience troubleshooting healthcare system integrations.

AI / GenAI

• •Strong practical, hands-on experience with AI/Generative AI .
• •Experience integrating LLMs or AI APIs into software applications.
• •Experience with prompt engineering .
• •Hands-on experience with RAG, embeddings, vector search, or AI agents is highly desirable.
• •Ability to identify and implement meaningful AI use cases rather than simply consuming AI tools for coding assistance.
• •Understanding of AI security, privacy, hallucination, evaluation, and responsible AI practices.

Healthcare & Security

• •Good understanding of HIPAA, PHI, and healthcare data security .
• •Experience implementing secure APIs and authentication mechanisms.
• •Understanding of OAuth2, JWT, RBAC, and secure token management.

Good-to-Have Skills:

• •Experience with Epic App Orchard .
• •Experience with SMART on FHIR application development.
• •Experie