Why this role exists
You'll be the first engineer dedicated to owning those critical paths: onboarding, activation flows, monetisation infrastructure, and the experimentation systems that help us improve all of it. As JustCall expands how it serves customers - from individual sales reps to small teams to mid-market organisations running AI-powered call workflows - you'll play a central role in building the growth engine that scales with them.
We're looking for a Senior Full-Stack Growth Engineer who is excited to build those journeys end-to-end. You'll work at the intersection of engineering, product, and data to create rapid, reliable growth systems that turn first-time users into activated users, and activated users into expanding accounts.
What you'll actually do
- Own and improve key product journeys from sign-up through onboarding, feature discovery, and purchase
- Build and refine onboarding experiences that help users - individual reps, team admins, growing accounts - quickly understand and realise the value of JustCall
- Design and implement self-serve billing flows:



subscriptions, plan gating, trial logic, seat expansion, and upgrade paths that work without a salesperson
- Wire AI into the growth experience: personalised onboarding, intelligent nudges, value demonstrations - built to production standard
- Iterate quickly, delivering thoughtful, incremental improvements that compound over time
- Contribute to the evolution of our onboarding and discovery systems as the product and customer base continue to grow.
- Integrate third-party and AI tools that enrich the product experience.

What we're looking for
- 5+ years of full-stack engineering experience, with meaningful time on growth, self-serve, or PLG systems
- Frontend depth - solid JavaScript, HTML, CSS. You care about what users experience, not just whether the backend call succeeded
- Strong Next.js fluency - you understand SSR, CSR, and ISR and choose deliberately, not by default
- Experimentation an

📌 SDE III (Bengaluru)
🏢 Saas Labs
📍 Bengaluru