Senior Back-End Engineer (Python)

We’re Senvio, a software agency based in Brno and Prague, specializing in helping companies modernize outdated systems and migrate to scalable, high-performance architectures. We collaborate with clients worldwide, with a strong presence in the Nordic region and the USA.

Position Description

We're looking for an experienced Back-End Engineer to join our team and help build the platform from the ground up for our US client in the media intelligence industry. You'll work directly on the product with real impact - not just on isolated tasks, but on the overall architecture, data pipelines, and AI-powered systems. 

Our company is built on people, especially people with an ownership mindset - competent enough to take responsibility, drive projects, be aware of dependencies, and overcome obstacles. We offer support and consultation, but try to stay away from micromanagement.

What You'll Work On

• Designing and building the core platform architecture from scratch - scalable, maintainable backend systems and services
• Defining and implementing a microservices architecture with clear system boundaries
• Building data pipelines that transform raw and unstructured data into production-ready insights
• Developing systems that leverage LLMs (with a strong emphasis on Claude) for agent-driven use cases and automation
• Collaborating with Data Science and ML engineers to productionize models and experimentation workflows
• Owning reliability, performance, and observability across platform services
• Mentoring engineers and helping shape engineering best practices as the team grows

What You Should Bring

• 5+ years of experience building backend or platform systems
• Strong knowledge of Python and modern backend frameworks (FastAPI, Django, Flask, or similar)
• Experience with distributed systems, microservices, or event-driven architectures
• Experience with cloud infrastructure (AWS) and containerized environments (Docker, Kubernetes, or similar)
• Experience with data pipelines, streaming systems, or large-scale data processing
• Hands-on experience integrating LLMs (Claude strongly preferred) and building AI-powered applications
• Ability to operate effectively in fast-moving, ambiguous environments with minimal structure

Bonus Points For

• Experience with agent-based systems, orchestration layers, or LLM-driven workflows
• Familiarity with vector databases, RAG architectures, or unstructured data processing
• Experience with event streaming technologies (Kafka, Kinesis, or similar)
• Experience building 0→1 products in a startup or high-growth environment
• Interest in AI-first development (Cursor, Claude Code, and similar tools)

What We Offer

• Real influence over architecture and product direction
• Opportunities to experiment with AI-first development
• A friendly and open company culture with plenty of shared activities (sports, console gaming, movie nights, table football, teambuilding events, shared breakfasts…)
• Flexible working hours and the option to work from home
• Offices in the center of Brno and in Prague
• Opportunities to attend conferences, workshops, and training

Sounds like you? Send us your CV or GitHub profile — we review every application personally and respond quickly.