Senior Back End Engineer

This is a foundational engineering role. Not a role where you just optimize endpoints or manage tickets. You'll be helping architect the backend of a global, privacy-first communication platform built from the ground up, on principles we don't compromise. It's an opportunity to craft a product that users loveand one that holds its own against WhatsApp, Teams, or Signal, not just in UX, but in security, auditability, and data control. You'll build systems that deliver consumer-grade performance and military-grade privacy. We're not iterating on someone else's blueprint. We're carving a new one.

Who are we

We are a young product company scaling fast and outgrowing the startup tagwith global scale in our crosshairs. We don't do okay. We give everything we've got to build the best communication platform in the world. Our team includes engineers from IIT and other top institutionspeople who care deeply about the craft, performance, and purpose. You'll learn more in 6 months here than most engineers do in 3 years elsewhere. We're intense. High-strung. Focused. Our team includes engineers from IIT and other top-tier

backgrounds. But what defines us is not our degreesit's our refusal to compromise on quality, performance, or privacy.

What are we building

WrkTalk is the world's first zero-access, zero-spam enterprise communication product that operates on a structural privacy architecture. One that's already earned the trust of large enterprises like L&T Finance, Adani Group, and Kalyan Jewellers just to name a few of our enterprise clients. This is not an MVP. This is production-grade software that secures communication for thousandsand soon, millionsof professionals worldwide.

What's the role

Design and build blazing-fast, secure APIs using NestJS and Golang

Architect robust microservices that scale and perform under pressure

Engineer real-time communication using WebSockets, WebRTC, and mediasoup

Optimize and tune PostgreSQL and Redis for lightning-fast access and reliability

Lead Dockerized deployments and manage Kubernetes clusters

Collaborate with our high-performance team of frontend devs, DevOps, and product leaders to ship elite-quality code

Build for zero-trust environmentsbecause no data should ever leak

The tech here is serious.

We work on socket-driven comms infrastructure, distributed control towers, multi-category encryption, root detection, app kill-switches, dynamic guest access, device-level lockout, and OOO/ DND logic layered with smart whitelisting. This is not lightweight app dev. This is protocol-layer decision-making.

Why should you join

Because you want to own backend architecturenot just follow it

Because you'll work directly with established founders, not buried under layers

Because you'll ship real, deeply engineered features used by large number of enterprise users

Because you'll grow 10x faster herein experience, learning, and impact

And because if you walk this road with us for 34 years, it'll catapult you into a tech orbit or fame and glory you never imagined

Who should apply

3+ years of backend experience building high-performance systems

Expertise in Golang and Node.js (NestJS)

Deep knowledge of PostgreSQL, Redis, Docker, Kubernetes

Strong command over microservices, RESTful APIs, and authentication protocols

Prior experience with real-time systems (WebSockets, WebRTC, mediasoup is a big plus)

Builders. Owners. With hunger to ship fast, fail fast, and optimize endlessly

Where are we located

We're based in Navi Mumbai and building for the world.