Senior Engineer, Full Stack Engineering

## Senior Engineer, Full Stack Engineering Apply locations:
New York, NY:
Princeton, NJ:
Waltham, MA - Headquarters time type:
Full time posted on:
Posted Yesterday job requisition :
JR100730

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, Web Sockets, 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 Dev Ops 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), Type Script, modern JavaScript, and responsive component libraries
* Expert in building AI applications with Lang Graph, Lang Chain, Llama Index, 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, No

SQL, and semantic databases, including schema design and query optimization
* Proficiency with testing frameworks (Jest, Pytest, Selenium) and build tools (Webpack, Vite) with Git workflows and trunk-based development
* Experience with monitoring and logging tools (Cloud Watch, Sentry, Langfuse)
* Clear communicator who takes initiative, follows through, and thrives as a collaborative problem-solver in fast-paced environments
* Life sciences background
* Cloud or AI developer certifications (AWS/Azure/GCP)
* Shipped AI-powered features to production
* LLM and AI agent development experience
* Open-source contributions
* PWA development and edge computing optimization
** About Trinity
** Trinity powers the future of life sciences commercialization through the fusion of human and artificial intelligence. By blending deep therapeutic expertise and trusted human ingenuity with a purpose-built technology platform,…