Firmable is the market-leading B2B sales intelligence platform in Asia-Pacific. Our competitive moat is our data: the deepest, most localised company and people dataset in every market we operate in. We've proven the model in ANZ. Now we're scaling it across Southeast Asia and the US.
Our platform runs on AI. This role builds the features that put intelligence into customers' hands every day.
The Role
Senior Full Stack Engineer (AI) ships end-to-end features across our stack: database to frontend to integrations. You'll own work from spec to production, and you'll work alongside product, design, and our Australian engineering team. AI isn't a feature you'll add; it's foundational to how you think about what you build.
This is not a "full stack" role where you pick a layer and own it deeply. It's an ownership role where you move across the whole stack fluidly, making the calls that get features live fast and right.
Reporting to Engineering Lead, based in Melbourne (hybrid, adaptable).
~75% hands-on execution: shipping features across web, API, browser extension,



and integrations; building durable background jobs and webhooks; designing APIs and data flows across Postgres, OpenSearch, DynamoDB and S3; building AI-native features using Mastra, CopilotKit, and LLM APIs.
~25% strategy: technical specs, architecture decisions, code review rigor, and clear communication of trade-offs to engineers and non-engineers alike.
What You'll Own
Feature shipping
• Full stack execution: build and ship features across our customer web app (Next.js), API layer (TypeScript), browser extension, and third-party integrations

• Data and backend design: design APIs and data flows across Postgres (Supabase), OpenSearch, DynamoDB and S3; build durable background job syncs, bulk enrichment, scheduled jobs and webhooks

• Quality standards: keep the codebase typed, tested, and observable; own code review and shipping discipline

AI features
• Agentic systems: build autonomous tools and copilots

📌 Fullstack Engineer (India)
🏢 Firmable
📍 India