Technical Lead

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

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.