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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 powering conversational and autonomous agents, focusing on reliability, scalability, and low latency in production.
- 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.
- Construct 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 around 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, including transcription, embeddings, and language comprehension.
- Intellectual curiosity, a proactive approach to learning, and the ability to form independent viewpoints.
- Ownership mentality and strong communication skills, with the ability to overcome blockers, ask pertinent questions, and drive progress.
Skills
- Python
- ML Engineering
- Data Science
- Machine Learning
- Large Language Models (LLMs)
- Prompt Design
- Agentic Systems
- LangChain
- LangGraph
- NLP
- ASR
- MCP
- DeepEval
- FastAPI
- Uvicorn
Location
- Remote (2 days per week)
Work Type
- 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 reimbursement (Pass Navigo) or sustainable mobility package up to €42/month
- Gym membership via Gymlib
- Health insurance via Alan Blue
- 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 platform.
- Values: Continuous Learning, Excellence & User First, Positivity, Resilience & Entrepreneurial Spirit, Action & Impact Obsession, Team Spirit, Raise the Bar & Coachability.
- Obsessed with quality in product, decisions, and hires.
- Focus on the real-world problems of sales teams.
- Act as owners, take initiative, and transform constraints into opportunities.
- Prioritize movement over perfection, execute, and learn quickly.
- Build strong teams based on trust, transparency, and mutual support.
- Embrace feedback for collective progress and challenge each other to achieve more.