Tech Lead – Architecting the Next Billion-User Systems
About Us
We’re Primetrace Technologies - the team behind :
- Crafto – 100M+ downloads- https : / / crafto.app /
- Kutumb – 100M+ downloads- https : / / kutumbapp.com /
We build products used by tens of millions. And we don’t have the luxury of things “just working.” They have to scale, survive, and stay fast — always.
About Role :
This isn’t a “manage the team” role. This is a build, break, scale, and own every damn line of backend logic role.Our systems run on Node.js and AWS , and your job is to make them bulletproof under traffic.If you’re the kind of engineer who gets angry when a request takes 500 ms… keep reading.What You’ll Do
Architect Node.js systems that scale from zero to millions - resilient, battle-tested, and ready for anything.Tear apart bottlenecks before they become outages.Build a backend that auto-heals, scales without begging, and doesn’t melt at 1M RPM.Own the full lifecycle - from feature idea to scaling in production.Guide engineers, set the technical bar, and call out flawed designs.Think ahead : design for chaos, failovers, and ugly realities before they happen.You’re Built for This If
You’ve watched a system catch fire and brought it back with grit and caffeine.You’ve scaled services under brutal load and lived to tell the story.You know Node.js beyond frameworks - profiling, event loop internals, async churn.You can rip apart AWS quirks (RDS slow queries, ElastiCache meltdowns, S3 limits) in your sleep.You don’t wait for instructions - you see a mess and fix it.Bonus XP (Things That Impress Us)
You’ve taken systems to 100M+ users or 6-digit RPS.You’ve crushed AWS bills without slowing down a single request.You’ve built real-time madness : Kafka, Kinesis, WebSockets.You’ve designed secure-by-default infra : IAM, VPC, KMS.What’s In It For You
Total ownership. Your code decides if we scale or die.Zero politics, zero handholding. Just outcomes.Massive visibility. If you’re good, everyone will know it.Work with a team that’s already shipped to 100M+ people - and is doing it again.If you’ve fought fires in production, debugged chaos at 3 AM, and still wanted more - you’re our kind of engineer.