Founding Engineer jobs in United States
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Convexia (YC S25) · 1 day ago

Founding Engineer

positionSan Francisco, CA
timeFull-time
remoteOnsite
seniorityMid, Senior Level
money$90K/yr - $200K/yr

Convexia is a company focused on building innovative frameworks for decision-making products. As a Founding Engineer, you will develop core systems for agentic orchestration and evaluation, manage product delivery, and collaborate with founders on strategic initiatives.

Artificial Intelligence (AI)BiotechnologyInformation TechnologyMachine LearningReal TimeWeb Apps

Responsibilities

Build and iterate on agentic orchestration frameworks: Develop robust systems for tool calling, routing, memory management, guardrails, provenance tracking, and failure recovery to ensure seamless agent performance
Design evaluation and backtesting harnesses: Create comprehensive tools for our agents and PoS model, including offline replay, regression testing, and confidence calibration to validate and refine system accuracy
Own end-to-end product delivery: Manage the full lifecycle from data ingestion and processing to user experience and system reliability, incorporating tight feedback loops from customers to drive rapid improvements
Enhance system performance and correctness: Tackle challenges with messy, real-world inputs like PDFs, tables, slides, non-English sources, and conflicting evidence to deliver reliable results
Partner with founders on strategy: Collaborate on the product roadmap, customer integrations, and technical direction as we transition from a platform to owning and advancing key assets

Qualification

Backend systemsMachine LearningSystem reliabilityEvaluation toolsObservabilityClear communicationOwnershipAdaptability

Required

You've built and shipped complex backend or ML systems in production, with a bias toward reliability
You obsess over evaluation, observability, and failure modes
You thrive in ambiguity and move fast without waiting for permission
You communicate clearly and take ownership in low-process environments

Preferred

You've been underestimated before
You've been told you're 'too intense'
You get bored in the absence hard problems
Hacker house vibes appeal to you

Company

Convexia (YC S25)

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Convexia is an AI-native platform that finds and evaluates overlooked drug assets faster than anyone else.
dateFounded in 2025
location
San Francisco, California, USA
people-size2-10 employees
web-link
https://www.convexia.bio

Funding

Current Stage
Early Stage
Total Funding
$0.5M
Key Investors
Y Combinator
2025-09-09Pre Seed· $0.5M
Company data provided by crunchbase