Software Engineer II, AI

This is a fully remote position, open to applicants in Czechia.

📋 Description

• Take full ownership of Voice AI agent capabilities, overseeing all stages from problem discovery and experimentation to architecture, implementation, testing, deployment, and impact assessment.

• Enhance conversational quality by improving aspects such as latency, turn-taking, barge-in, speech recognition, multilingual capabilities, protocol adherence, and transfer processes.

• Design fail-safe mechanisms to bolster service resilience and observability.

• Address production issues through analysis of contributing factors, mitigation strategies, and preventative measures.

• Develop and utilize automated evaluations, call-replay tools, production metrics, and controlled traffic trials.

• Identify regressions, evaluate trade-offs, and optimize model and system performance.

• Engage with the complete stack, encompassing Python backend, AI model behavior, and React/TypeScript user interface.

• Employ AI tools for coding, testing, call analysis, and incident triage while managing architecture, safety parameters, and production decisions.

⛳️ Requirements

• 2-3+ years of experience in back-end or full-stack engineering with a track record of delivering production software from start to finish.

• Practical experience in developing AI/LLM applications.

• Strong foundational knowledge in distributed systems, APIs, and operational reliability.

• Experience with real-time voice, streaming media, or conversational agents is highly advantageous.

• Proficient in Python, including experience with asynchronous programming.

• Willingness to work across the full stack with TypeScript/React frontend; prior experience is a plus, or a strong desire to learn.

• Capability to assess non-deterministic AI behavior using datasets, automated metrics, qualitative call reviews, controlled experiments, and statistical analysis.

• A self-starter with an ownership mentality and a proactive approach.

• Product-centric problem-solving abilities and skills in evidence-based decision-making.

• Excellent written and verbal communication skills and a collaborative mindset.

• Familiarity with AI-assisted coding and modern AI-driven work practices.

• Willingness to participate in a weekly on-call rotation.

• Openness to travel 1-2 times a quarter for in-person team meetings, primarily within Europe.

🏝️ Benefits

• Competitive salary and benefits package.

• Equity participation opportunities.

• A dynamic, flexible, and enjoyable start-up work environment.

• Chance to collaborate with a dedicated team on a global challenge.