Software Engineer

Join a small, fast-moving team at a Y Combinator-backed conversational AI SaaS startup building an AI voice platform that automates customer call operations at scale for B2C companies. You’ll work on a product that handles thousands of AI-powered phone calls every day - spanning sales, support, and operations - and you’ll do it in person alongside a sharp, low-ego team in Berlin.

This is a high-ownership, end-to-end engineering role. You’ll shape core architecture, ship features with speed, and work directly with customers to turn real problems into elegant product experiences.

What You’ll Do

• Work closely with customers to understand their challenges and design product experiences that genuinely solve them.
• Build scalable backend infrastructure capable of handling thousands of concurrent AI phone calls per day.
• Create intuitive, AI-first user experiences on the frontend.
• Own high-stakes projects end-to-end - from initial concept through production launch and post-release support.
• Contribute to core architectural decisions that shape the direction of the platform.

Required

• 2+ years of professional software engineering experience.
• Proficiency with TypeScript, React, Node.js, and Python.
• Strong PostgreSQL experience.
• Proven ability to design scalable backend architectures and make meaningful product/architectural decisions.
• Experience taking a product from 0 to 1 - you’ve built something from the ground up.
• Ability to own projects end-to-end: concept production post-release support.
• Strong collaboration skills - you’re comfortable working directly with customers and cross-functional teammates to translate problems into solutions.

Nice to Have

• Familiarity with Temporal.io, Twilio, or Modal.
• Experience with scalable async or real-time processing systems.
• Background building products for AI-first or communications-enabled platforms (e.g. voice, telephony, conversational AI).

• Salary: $75,000 - $160,000 USD annually (depending on experience)
• Visa sponsorship available
• Early-stage equity opportunity
• Work at a well-funded, high-growth startup backed by top-tier investors