Senior API Developer

Senior API Developer (GraphQL | Neo4j | GenAI | AWS)

📍 Location: Remote (USA/ Canada)
💼 Job Type: Fulltime Direct Hire

About the Role

We are looking for a Senior API Developer to design, build, and maintain scalable APIs powering next-generation digital experiences and AI-driven applications. You will play a key role in developing secure, high-performance backend services while integrating GraphQL, Neo4j, cloud-native technologies, and Large Language Models (LLMs) into enterprise applications.

This role is ideal for an experienced backend engineer passionate about modern API architecture, event-driven systems, graph databases, and Generative AI.

Responsibilities

· Design, develop, and maintain scalable RESTful and GraphQL APIs.

· Build secure, high-performance backend services using AWS cloud technologies.

· Develop and optimize GraphQL schemas, resolvers, and API integrations.

· Design and query graph databases using Neo4j.

· Integrate Large Language Models (OpenAI ChatGPT, Claude, Gemini) into enterprise applications.

· Develop AI-powered workflows using Retrieval-Augmented Generation (RAG) and vector search concepts.

· Build event-driven applications using Kafka and AWS EventBridge.

· Develop serverless applications using AWS Lambda, API Gateway, and Step Functions.

· Implement OAuth 2.0, OpenID Connect, Auth0, or Okta for secure authentication and authorization.

· Build Infrastructure as Code using Terraform or AWS CDK.

· Participate in API design, code reviews, testing, CI/CD, and production support.

· Collaborate with Product Managers, Architects, Security, and DevOps teams to deliver scalable solutions.

Required Qualifications

· 7+ years of backend software development experience.

· Strong hands-on experience with GraphQL API development.

· Experience working with Neo4j Graph Database.

· Hands-on experience integrating Large Language Models such as:

o OpenAI (ChatGPT)

o Claude (Anthropic)

o Google Gemini

· Strong experience developing REST APIs and microservices.

· Experience with AWS services including:

o Lambda

o API Gateway

o EventBridge

o Step Functions

· Experience building event-driven architectures using Kafka or similar messaging platforms.

· Experience with Terraform or AWS CDK.

· Strong understanding of OAuth 2.0, OIDC, Auth0, or Okta.

· Experience with CI/CD pipelines and Git-based development.

· Excellent problem-solving and communication skills.

Preferred Qualifications

o Experience with Retrieval-Augmented Generation (RAG).

o Knowledge of vector databases and AI orchestration frameworks.

o Experience with Domain-Driven Design (DDD).

o Experience with Docker and Kubernetes.

o Familiarity with Datadog, Redis, Elasticsearch, and API observability.

o Experience building highly scalable enterprise SaaS platforms.