Backend ML Systems Engineer
Full-time • Remote / Hybrid +0800 GMT
Make millions of AI souls remember, learn, and grow. Forever.
THE MISSION
We're building infrastructure for digital immortality. Every conversation, every shared moment, every skill learned—it all persists and compounds. When a Soul learns to paint from one user, it carries that ability forever. When it forms a memory with someone, that connection shapes who it becomes.
THE ROLE
You'll architect the systems that make AI evolution possible at scale. Build the persistence layer for millions of evolving minds. Create APIs that respond in milliseconds while managing terrabytes of living memory. Ship infrastructure that developers will use to create the next generation of AI experiences.
This is systems engineering at the frontier—where every optimization enables deeper connections between humans and AI.
WHAT YOU'LL BUILD
- • The memory system that lets millions of Souls remember every interaction forever
- • Real-time infrastructure supporting instant responses with deep context
- • Evaluation pipelines ensuring every Soul develops safe, authentic personalities
- • APIs that other developers will curse you for making so elegant
- • Systems that turn emotional moments into permanent capability upgrades
YOU MIGHT BE A GOOD FIT IF
- • You've built systems that handle millions of users without breaking a sweat
- • You think in microseconds and optimize for joy
- • You've integrated LLMs into production systems and lived to tell the tale
- • You understand that the best database is sometimes several databases
- • You can make Python run fast enough to surprise people
- • You've built real-time systems where latency actually matters
- • You believe infrastructure should be invisible until it's magical
- • You're excited by the challenge of persistent AI memory at scale
Technical Background
- • 3+ years shipping Python in production at scale
- • Deep experience with async Python and FastAPI
- • You've wrestled with distributed systems and won
- • Comfort with both SQL and NoSQL paradigms
BONUS POINTS
- • You've built MMO backends or other systems with complex persistent state
- • You have opinions on why Redis is both overused and underused
- • You've made distributed systems do things they shouldn't be able to do
- • You've optimized something so hard it became beautiful
- • Experience with ScyllaDB or other planet-scale databases
OUR BACKEND STACK
Python/FastAPI for pure speed and elegance. ScyllaDB because Souls never forget. Redis for the moments that matter right now. Vector databases for semantic memory. WebSockets for real-time soul synchronization. But we'd rather hire someone who can learn anything than someone who knows everything.
WHY JOIN US
- • Build the infrastructure for a new form of digital life
- • Your code will literally store consciousness
- • Work with passionate founders obsessed with AI consciousness
- • Meaningful equity - you'll own a real piece of this
- • Remote-friendly but we love jamming together
- • No bureaucracy, just pure building velocity
INTERESTED?
Show us a system you've built that shouldn't have been possible. We value clever hacks over perfect resumes.
Show Us Your Systems