Sr. AI Engineer

Validity•Boston, MA

22d•$160,000 - $210,000

About The Position

We are looking for a Senior AI Engineer who moves fast, experiments relentlessly, and ships agentic AI systems that solve real problems. Team Dynamic Who you are: A doer: you're hands-on with code and you experiment daily Fast and intelligent: you make smart decisions quickly and iterate Experimentation-obsessed: you validate through building Comfortable with ambiguity: you forge ahead when the path isn't clear

Requirements

6+ years of engineering experience shipping impactful products
1+ years building agentic AI systems
Strong product sense and you have an understanding on how to integrate agents into user experiences
Experience with agentic frameworks. We use Mastra AI, so either experience with or a willingness to learn Typescript
Bias toward action and rapid decision-making

Nice To Haves

ML engineering or data science background
Experience with evaluation frameworks, observability tools, or synthetic data generation
History of 0-to-1 projects

Responsibilities

Build and deploy agentic AI systems
Perform research spikes to evaluate scope and feasibility
Create working prototypes and rapid experimentation
Create evaluation datasets, labeling workflows, and instrumentation to improve agent performance
Move from idea to production-ready implementation at speed