Senior Engineer, Full Stack Engineering

Senior Full Stack Software Engineer

Location: Waltham, MA; New York, NY; Princeton, NJ

Employment Type: Full-Time

Work Mode: Hybrid

Position Summary

We're looking for an exceptional engineer who loves building cloud-native applications with AI at their core.

If you thrive where modern infrastructure meets intelligent software, this is your role.

What You'll Do


* Architect and ship scalable cloud apps on AWS, Azure, or GCP (Lambda, ECS, Kubernetes) with event-driven microservices and serverless architectures 


* Build AI/ML integrations using modern frameworks while driving best practices for prompt engineering, RAG patterns, and agent orchestration 


* Lead technical architecture decisions, code reviews, and define development standards and technical roadmaps 


* Own the full stack—from pixel-perfect, accessible UI implementation to robust Django REST and GraphQL APIs 


* Build real-time features using WebRTC, WebSockets, and Server-Sent Events 


* Create and enforce engineering excellence through coding standards, comprehensive testing strategies (unit, integration, agent-based, E2E), documentation, and deployment patterns 


* Champion DevOps practices, security compliance, and CI/CD pipelines while establishing observability with APM tools 


* Lead and mentor teams through agile delivery, establishing engineering culture through technical leadership and knowledge sharing 


* Collaborate with data engineering teams on pipeline integration and consumption patterns 


* Lead production incident response, post-mortems, and evaluate emerging AI/ML tools and frameworks 


* Bridge product, design, and engineering to deliver fit-for-purpose client solutions 

What You'll Bring


* 8+ years building production-grade solutions with proven tech leadership 


* Expert in React web apps, React native with state management (Redux, Zustand), TypeScript, modern JavaScript, and responsive component libraries 


* Expert in building AI applications with LangGraph, LangChain, LlamaIndex, AWS Bedrock, OpenAI APIs, including token optimization, cost management, and streaming responses 


* Expert in  Python and Django with REST and GraphQL API design, plus async patterns (asyncio, FastAPI) for AI workloads 


* Experience with multi-modal AI (text, images, documents), fine-tuning, model adaptation, and understanding of data quality and governance in AI contexts 


* Hands-on Docker and containerization with CI/CD pipeline creation (Git, Jenkins, Artifactory) 


* Deep cloud platform development experience (AWS, Azure, GCP) with serverless, containers, and understanding of security, IAM, and authentication patterns (OAuth, JWT, SSO) 


* Experience with RDBMS, NoSQL, and semantic databases, including schema design and query optimization 


* Proficiency with testing frameworks (Jest, Pytest, Selenium) and build tools (Webpack, Vite) with Gi...