Senior Backend Engineer (Platform)

We are now expanding our team and are looking for a skilled, goal-oriented backend developer to help us grow. You'll work on services, APIs, databases, and integrations with external systems, collaborating closely with a small, hands-on, technically strong team that moves fast and makes decisions without unnecessary bureaucracy.

• 6+ years of production experience with Python
• At least 2 years of hands-on experience with async Python (FastAPI, aiohttp, or similar frameworks) in production
• Ability to debug issues across service boundaries
• Strong product mindset, understanding the "why" behind requests and making technical decisions that align with product and business goals.
• Able to navigate ambiguity, adapt quickly to changing priorities, and deliver results despite evolving requirements and limited upfront specifications.
• Open to using AI tools in daily development and troubleshooting

Nice to have:

• Experience with AI Tracing Tools like LangSmith

• Develop and maintain the internal LLM agent framework with focus on scalability, processing, and parallelism
• Ensure system observability and reliability using metrics, tracing and monitoring tools
• Adapt the framework for specific customer use cases and collaborate closely with ML/NLP teams
• Build and support automated LLM evaluation pipelines
• Design backend services using Python () and modern cloud-native architecture.

• The team has built award-winning AI products for tech corporations: devices, voice assistants, products that are actually in the world
• Cutting-edge tech stack: Speech Technologies, NLP, Generative AI (LLMs, diffusion models), voice-first agentic architecture with privacy-first and on-premises deployment
• High engineering bar and real ownership: the team cares about what actually works in production, not what looks good in a demo, and you'll see the impact of your work directly
• Fast career progression: a senior-heavy team and a high volume of real problems means you grow faster than you would anywhere else
• Startup pace with enterprise stability: real clients, real revenue, no bureaucracy
• Fully remote across Europe
• 21 vacation days + public holidays + 5 sick days
• Private English lessons via Preply
• Company-paid subscriptions to top AI tools (ChatGPT, Claude, Cursor, and others)