Full-Stack Software Engineer

EngRadar / Clera

Software Engineer

Clera

A well-funded, early-stage B2B SaaS startup building self-improving conversational agents that run product demos 24/7.

Berlin Full-time Posted today sales automationai

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About The Role

Join a small, fast-moving engineering team at a Y Combinator-backed conversational AI voice startup building the infrastructure that powers thousands of AI-driven phone calls every day. This is a high-impact, full-stack engineering role where you'll own projects end-to-end, influence core architecture decisions, and work directly alongside customers to ship meaningful product experiences in an AI-first, communications-enabled platform.

The company is on-site in Berlin, Germany — visa sponsorship is available for the right candidate.

What You'll Do

• Work closely with customers to deeply understand their problems and design product experiences that solve real challenges.
• Build and scale backend infrastructure capable of handling thousands of concurrent AI phone calls per day.
• Craft intuitive front-end user experiences tailored to an AI-first product paradigm.
• Own high-stakes projects from initial concept through production launch and post-release support.
• Contribute to core architectural decisions alongside a senior, driven engineering team.
  
  

What We're Looking For

Required

• 2+ years of professional software engineering experience.
• Strong PostgreSQL skills — including complex queries, performance tuning, and optimization.

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• Experience designing scalable backend architectures and making core product/architectural decisions.
• Hands-on experience with scalable async processing or real-time processing systems.
• Experience building products for AI-first or communications-enabled platforms.
• Proficiency with TypeScript, React, Node.js, and/or Python.
• Demonstrated ability to take a product from 0 to 1 and own it end-to-end.
• Strong collaboration instincts — comfortable translating customer problems into product decisions with cross-functional teams.
• Willingness to work on-site in Berlin, Germany (this is a dealbreaker requirement).
  
  

Nice To Have

• Familiarity with Temporal.io, Twilio, or Modal.
• Prior experience at a startup or early-stage company.
  
  

Tech Stack

• Languages & Frameworks: TypeScript, React, TanStack, Node.js, Python
• Database: PostgreSQL
• Infrastructure & Tooling: Temporal.io, Twilio, Modal
  
  

Compensation & Benefits

• Salary: $75,000 – $160,000 USD annually (range reflects experience level)
• Visa sponsorship available
• Opportunity to work on a high-growth product from the ground floor with a lean, driven team
  
  

Location

This role is on-site in Berlin, Germany. Remote or hybrid arrangements are not available for this position. Visa sponsorship is offered to qualifying candidates.

Posted by Clera on their own careers page — you apply directly, no recruiter in between. View original / apply →

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