About Discovery & Scout
The Discovery team sits at the core of Harmonic’s product and data engine. We make it possible to search, research, analyze, compare, and evaluate across the entire universe of startups (we track tens of millions of companies, hundreds of millions of operators and, tens of thousands of investors along with their deal activity, and counting). We source and ingest data from first-, second- and third-party sources, including hundreds of fragmented and unstructured sources, and turn them into structured insights and searchable indices. Recently, we built the industry leading agentic layer for startup search and research, that’s unlocking new paradigms for VCs to make sense of this vast amount of data on startups and automate critical tasks in their sourcing and diligence workflows.
We’re in the middle of a massive platform shift where AI and LLMs are transforming what "software" is. Agentic product- and user-experience patterns will be spelled out in playbooks before long – and we’re building those playbooks, not waiting for them. This includes conversational interfaces, deep research, dynamic agentic frameworks purpose built for venture, and AI-first product workflows.
We’re looking for folks that want to help redefine software and push on this frontier with deep curiosity, an insatiable growth mindset, and high agency.
To learn more about the team:
The role
Architect the core intelligence behind Scout
Own the end to end architecture of our sourcing engine from data ingestion, ranking, personalization, and model orchestration.
Define scalable frameworks for retrieval, reranking, and LLM driven evaluation to ensure we deliver highly personalized and high quality results.
Create architectural patterns that integrate Scout seamlessly with our existing products to power repeatable sourcing workflows.
Lead agentic experimentation and evaluation
Drive technical discovery for emerging technologies (e.g. memory systems, schema, prompt libraries, embedding models, and agentic frameworks).
Improve and extend our evaluation pipelines to test new models and determine lifts in specific parts of our product.
Build systems that allow fast iteration without compromising quality or reliability. Our priorities are reliability, performance, cost, and then developer productivity.
Shape AI native product experiences
Partner with product and design to define patterns that make LLM powered sourcing intuitive and fast.
Translate ambiguous product goals into scalable technical designs that unblock new workflows for our users.
Establish best practices for building AI-first UX patterns (agentic flows, async interactions, structured outputs).
Provide architectural leadership across engineering
Mentor and guide engineers on the team raising the bar for system design, documentation, and technical decision making.
Drive clarity in cross team architecture with Flow, Data, and Infra ensuring Sourcing evolves as a cohesive, maintainable system.
Set long term technical direction for how we build AI powered sourcing systems.
X5 Labs is a stealth-mode AI startup building a work model for regulated enterprises. The company develops an ambient discovery platform that observes everything an employee does on their computer — watching screen activity, mouse movements, and keyboard inputs — then augments and enhances their workflows using custom AI models deployed end-to-end within the customer's environment.
Founded by repeat entrepreneurs with deep roots in Israeli Defense Force intelligence and AI research, X5 Labs is on its second venture together. The company focuses on large regulated enterprises, primarily in finance — serving top-tier banks and financial institutions with production-grade, self-hosted AI solutions.
X5 Labs operates as an applied research lab with an execution-first mindset. The team has academic AI backgrounds but prioritizes shipping production systems, deploying custom models, and delivering real customer value over publishing papers. The company buys its own GPUs rather than renting, self-hosts models, and maintains full control of its AI infrastructure stack.
Backed by Insight Partners and other top-tier investors with tens of millions in funding, X5 Labs is rapidly scaling — currently around 25 people with plans to grow to approximately 70 by end of year. The company has already closed seven-figure deals with top-5 US banks and is deploying its platform across multiple enterprise customers.
Salary
$200,000 - $280,000
Location
New York, United States
Experience
8+ years
Total raised
$23M
Last stage
Series A
Investors
Bryan Casey
Co-founder
Max Ruderman
Co-founder
No applications, no recruiter spam. Just the intro.
A few questions to make sure this role is the right shape for you. Two minutes.
I write the intro, send it to the founder, and handle the back-and-forth.
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.