We’re Callsy AI, a fast-growing startup backed by Firstpick VC and 500 Global.

Our mission? To help brands turn missed calls into closed deals using AI. We move fast, build faster, and break barriers daily - all in less than a day’s sales cycle 😎 

🚀 Full Stack Engineer - Join the AI Revolution at Callsy.ai

If you’re the kind of engineer who loves to own the full stack - from frontend pixels to backend logic to infrastructure magic - then keep reading.

🧠 What You’ll Work On

You’ll be working on the entire product ecosystem -frontend, backend, and infra - alongside our brilliant CTO Laimonas Sutkus, who architected the whole thing from zero. This is your chance to build real product, not just tickets.

Our stack:

• Remix (React Router V7) for both frontend & backend
• TypeScript everywhere
• Python (AWS CDK) for infrastructure
• AWS (SQS, DynamoDB, AuroraDB, Lambda)
• Vercel for deployments
• Twilio for telephony management (we’re heavy users 👀)

🧩 Who You Are

• You can take a feature from idea → UI → backend → deploy → monitor
• You love autonomy, ownership, and fast iteration
• You get excited about solving tough challenges with smart people
• You’ve touched AWS and enjoy building things that actually scale
• You can handle the chaos (in a fun, startup way)

💡 Why Join Us

• Work directly with a top-tier CTO who’s built the full 360° stack
• Startup that is backed by prestigious 500 Global tier 1 lvl fund.
• Zero corporate fluff. Real product. Real users. Real impact.
• Huge potential for growth, learning, and ownership
• Competitive salary + Stock options.

If this sounds like your kind of challenge, drop us a message or apply directly.

Let’s build something insane together. ⚡