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 and instrumentation fluen

📌 Senior Software Engineer (Bengaluru)
🏢 Saas Labs
📍 Bengaluru