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About the Role
Modjo is building an AI dedicated to B2B sales to help sales representatives focus on what truly matters by capturing commercial interactions, prioritizing opportunities, and detecting risks. Joining Modjo means participating in a revolution that will redefine how millions of sales professionals work.
Responsibilities
- Design, build, and optimize the agentic stack for conversational and autonomous agents, focusing on reliability, scalability, and low latency.
- Architect and maintain end-to-end LLM features, including model orchestration, routing, monitoring, logging, and evaluation.
- Develop and improve ML infrastructure, covering observability, load balancing, scaling patterns, and deployment workflows.
- Build robust datasets and evaluation pipelines for deterministic (ASR) and non-deterministic (LLMs and agents) systems to continuously enhance quality.
- Collaborate with Software Engineers to implement scalable, observable, and automated infrastructure for ML services.
- Work closely with Product Managers to assess feasibility, refine specifications, and reliably deliver ML features.
- Contribute to technical strategy, including model and tool selection, architectural decisions, and the long-term roadmap for the agentic platform.
- Stay updated on the latest research, frameworks, and open-source developments in LLMs, agentic systems, and evaluation methodologies.
Requirements
- 2 to 5 years of experience in ML Engineering or Data Science.
- Solid proficiency in Python (experience with low-level languages like Java or C is a plus; a purely scripting profile is insufficient).
- Good foundation in ML, including model types, data science best practices, and evaluation methods.
- Strong command of LLMs, including prompt design, evaluation, and cost/performance trade-offs.
- Experience with agentic systems such as tool execution, workflows, memory architectures, and frameworks like LangChain/LangGraph.
- Exposure to MCP (Model Context Protocol), DeepEval, FastAPI, and Uvicorn.
- Understanding of NLP concepts like transcription, embeddings, and language comprehension.
- Intellectual curiosity, a proactive approach to learning, and the ability to form independent viewpoints.
- Ownership mentality and good communication skills; ability to overcome blockers, ask pertinent questions, and drive progress.
Skills
- Python
- ML Engineering
- Data Science
- Machine Learning
- Large Language Models (LLMs)
- Agentic Systems
- Prompt Design
- NLP
- FastAPI
- Uvicorn
- LangChain
- LangGraph
Location
- Remote (2 days per week)
Work Type
- Full-time
- Hybrid
Experience Level
- Mid-level
Benefits
- 2 days of remote work per week
- 9 to 11 days of RTT per year
- Meal vouchers via Swile card
- Transport coverage (Pass Navigo) or sustainable mobility allowance up to €42/month
- Gym membership via Gymlib
- Alan Blue health insurance
- Access to Pluxee, the employee benefits platform
- Structured onboarding and accompanied skill development
- Regular performance reviews
- Parental Leave Soft Landing: 1 day off per week for the first 4 weeks upon return from maternity or paternity leave, at full salary
About the Company
- Modjo is building the leading European AI for Sales, aiming to revolutionize how sales professionals work.
- The company values continuous learning, excellence, user focus, positivity, resilience, entrepreneurial spirit, action, impact obsession, team spirit, raising the bar, and coachability.
- Modjo is focused on building foundations and offers a role where employees can create, innovate, and have a direct impact.
- Employees will work on a product that significantly changes daily work for thousands of professionals through AI.
- The company fosters a high-talent environment that encourages personal and collective growth.