Founding Full-Stack Engineer (Backend-leaning)

Solstice Health • New York City, NY

3d

About The Position

Solstice is redefining how life sciences organizations commercialize their products. We are building a commercial engine that allows pharmaceutical marketers to take control of their content supply chain. We have raised $3.5mm+ from investors like Twelve Below, Virtue and the founders of Datavant, Commure, and Paradigm to supercharge our growth and build an elite team of engineers and operators. We’re looking for someone who has the fire to prove others wrong. We’re building Solstice to automate compliant, reference-backed pharma marketing. As a founding full-stack engineer, you’ll own core parts of the application stack, designing APIs, background workflows, and deployment pipelines, and you’ll be responsible for packaging and shipping LLM “agents” to production. Beyond development, you will be collaborating closely with co-founders Yiwen and Aris on all facets of the startup as we grow Solstice in the coming years as we ship fast, safe, and observable systems.

Requirements

• Relevant experience building systems & deploying enterprise-grade products
• Ability to make decisions and drive results on their own.
• Strong proficiency in full-stack web development technologies such as Python, FastAPI, Docker, AWS
• Experience working with LLMs such as GPT, Claude and Gemini to create LLM-based workflows, RAG Pipelines and agentic solutions. (Either formally or through projects/experimentation)
• Superb communication and collaboration skills.
• Unreal work ethic.

Responsibilities

• Build and harden FastAPI services; design clean interfaces for ingestion, retrieval, annotation, and compliance checks.
• Stand up a reliable background job platform with Celery + Redis (scheduling, retries, idempotency, backoff, result stores).
• Package LLM/RAG agents (e.g., LangGraph/LangChain) into production service.
• Ship to AWS, manage secrets, networking, autoscaling, and cost controls.
• Building robust, enterprise integrations with cloud platforms such as Veeva Promomats, Adobe, and Figma.
• Orchestrate file processing (PDFs, images), OCR, embedding pipelines, and metadata enrichment at scale (S3-first design).
• Model clean schemas and access patterns for Postgres; use Redis for caching and rate-limiting; integrate vector DBs (Pinecone).
• Contribute to our Next.js frontend where necessary.

Benefits

• Medical insurance
• Relocation support
• Opportunity to work at a high-velocity and high-energy startup
• Visa sponsorship (O-1) for internationals

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Education Level: No Education Listed