Key skills
KubernetesPythonTerraformGoAIMLLLMAgenticLangGraphCachingCI/CDCollaboration
About this role
Role Overview
- Build and iterate on LLM features, including agentic workflows, using LangGraph and LangSmith.
- Scale the platform foundations behind these features — orchestration, performance, and reliability.
- Partner closely with the team's ML Engineer on design, evaluation, and productionization of AI systems.
Requirements
- 5+ years of experience in software engineering and a proven track record of shipping production systems.
- Hands-on experience building LLM-powered features in production, with a clear understanding of the trade-offs (quality, cost, latency, safety) and how they connect to product and business needs.
- Know how to systematically improve LLM systems: versioned prompts, offline/online evaluations, data analysis, and iteration based on real-world signals.
- Can industrialize LLM systems at scale (caching, batching, model routing, observability, rate limiting, ML CI/CD pipelines).
- Strong in Python and comfortable working with REST APIs and making pragmatic architectural decisions.
- Operate as a senior engineer: debugging complex systems, refactoring with intent, reviewing code thoughtfully, and thinking ahead about scalability.
- Take ownership: identify gaps, propose solutions, and go beyond immediate scope.
- Connect technical decisions to product and business outcomes.
- Regularly use AI tools in daily workflow.
- Communicate clearly and collaborate effectively, especially with ML teams.
- Fluent in English (written and spoken) and comfortable working in an international environment.
- Basic knowledge of Kubernetes and Terraform to independently deploy and operate services is a plus.
- French is a plus for day-to-day collaboration in our Paris office.
Tech Stack
- Kubernetes
- Python
- Terraform
Benefits
- Package that includes BSPCE
- Lunch voucher (Swile, 9€ at 50%)
- Sponsored Wellpass (gymlib)
- Non-charged health insurance for children (Sidecare / Generali)
- Up to €300 to improve your home office set-up
- Yearly holiday allowance
- Referral bonus of 4000€ for any new Guardian we might hire thanks to you
- Team building: monthly budget dedicated to each employee that you can spend as you wish, with colleagues (latest examples to date: Michelin star restaurant, karaoke, stand-up show, kitesurfing week-end, ...)
- Remote policy: hybrid (3 days/week at the office in Paris)
- Opportunities for career development in the long term