Chief Technology Officer

Serable; New York (NY); On-site; USD 180,000 - 280,000; Full time

Benefits offered by this job

Flexible salary plus meaningful co‑far

Job summary

A startup in clinical trial technology is seeking a CTO/Cofounder to build the platform from the ground up. You will architect and ship the first production system, grow the engineering team, and make critical technical decisions. Ideal candidates are those with experience in creating platforms, particularly in high-stakes environments, who thrive in fast-paced settings. The position offers a flexible salary along with co-founder-level equity.

Qualifications

• Experience designing or building platforms from the ground up in real‑world environments.
• Experience as a Cofounder in a venture‑backed startup or a Founding Engineer at a high‑growth company.
• Strong full‑stack engineering skills with infrastructure.
• Knowledge of RAG pipelines.
• Experience with agent workflow orchestration.
• Experience with model adaptation and fine‑tuning.
• Familiarity with LangChain or comparable agent frameworks.

Responsibilities

• Build the first version of the platform end‑to‑end.
• Design workflows for clinical trial execution.
• Build production‑grade RAG pipelines and automation systems.
• Own technical decisions across various systems.
• Develop agent frameworks using tools like LangChain.
• Ensure reliability in autonomous task execution.
• Partner closely with the founder on strategy.
• Join customer meetings to understand workflow pain points.
• Support fundraising efforts with technical narrative.
• Hire and lead the first engineering team.
• Support fundraising efforts through technical narrative and credibility.
• Hire and lead the first engineering team as the company scales.

Job description

Our client is building the Agentic Operating System for Clinical Trial Execution.

Clinical trials are one of the most operationally complex, expensive, and failure-prone systems in healthcare. Despite massive innovation in therapeutics, trial execution still runs on fragmented tooling, manual workflows, and overloaded clinical operations teams.

Our client is changing that by building an agent-native platform that can execute, coordinate, and automate the workflows that power modern clinical trials.

The founder has already raised a seed round and has signed customers.

roleThis is a CTO/Cofounder to build the platform from 0 to 1. The right person will architect and ship the first production system, then grow the engineering team around it. This individual will be the technical counterpart to the founder, owning platform decisions, execution velocity, and technical strategy. The goal is to deliver a functioning V1 platform ready to deploy with customers in the next 2 to 3 months.

What You Will Do

• Build the Product (0 to 1): Architect and ship the first version of the platform end‑to‑end.
• Design agentic workflows for clinical trial execution.
• Build production‑grade RAG pipelines, orchestration layers, and automation systems.
• Own technical decisions across backend, frontend, infrastructure, and AI systems.
• Develop Agentic Infrastructure: Implement agent frameworks using tools like LangChain or equivalents.
• Build retrieval, memory, and tool‑use systems for real‑world enterprise workflows.
• Fine‑tune or adapt models where needed for domain‑specific execution.
• Ensure reliability, observability, and safety in autonomous task execution.
• Operate as a Co‑Founder: Partner closely with the founder on strategy, product direction, and roadmap.
• Join customer meetings to deeply understand workflow pain points.
• Support fundraising efforts through technical narrative and credibility.
• Hire and lead the first engineering team as the company scales.

What Our Client Is Looking For

• Background: Experience designing or building platforms from the ground up in real‑world environments.
• Experience as a Cofounder in a venture‑backed startup or a Founding Engineer at a high‑growth company.
• Strong full‑stack engineering skills with infrastructure.
• Knowledge of RAG pipelines.
• Experience with agent workflow orchestration.
• Experience with model adaptation and fine‑tuning.
• Familiarity with LangChain or comparable agent frameworks.

You Might Be a Fit For

• If you have built 0 to 1 systems before, especially in high‑stakes domains.
• Want to be the technical founder, not a CTO.
• Thrive in ambiguity and move extremely fast.
• Care about building durable software, not demos.
• Want massive ownership, equity, and long‑term upside.

Compensation

Flexible salary plus meaningful co‑founder‑level equity.