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PhantomBuster

PhantomBuster opens a new era of lead generation.

Senior ML Engineer – AI Platform, Agents

AI EngineerMachine Learning EngineerFull TimeRemoteSeniorTeam 51-200H1B No SponsorCompany SiteLinkedIn

Location

France

Posted

18 days ago

Salary

0

Seniority

Senior

Job Description

Senior ML Engineer – AI Platform, Agents

PhantomBuster

• Define and evolve our infrastructure to allow for better ML and AI capabilities, with a focus on LLM-based and agentic systems. • Contribute to the development and expansion of our agentic AI framework powered by AWS Bedrock, enabling both internal tools and customer-facing features. • Identify, source, and refine datasets to allow tuning models, powering retrieval pipelines, or expanding agentic workflows. • Pre-process data by using techniques such as data cleaning, feature engineering, and transformation. • Train, evaluate, and deploy both LLM-based systems and traditional machine learning models into production. • Monitor, debug, and continuously improve deployed models and AI tools. • Support machine learning usage throughout the company, including selecting the right modeling approach for the use case (LLM vs. traditional ML). • Support the integration and use of LLMs, including approaches such as fine-tuning, prompt tuning, and retrieval-augmented generation (RAG), to improve accuracy.

Job Requirements

  • 5+ years of experience as an ML Engineer, AI Engineer, or Software Engineer with a strong AI focus.
  • Hands-on experience building AI agents using frameworks such as LangChain, Amazon Bedrock AgentCore, or similar.
  • Strong understanding of LLM-based systems: prompt engineering, agent orchestration, tool use, and multi-agent workflows.
  • Familiarity with MCP (Model Context Protocol) and experience integrating agents with external APIs or data sources.
  • Experience working with Agents for Amazon Bedrock AgentCore or similar agent setups.
  • Strong understanding of machine learning algorithms, statistical methods, and data preprocessing techniques.
  • Experience with cloud platforms for model training and deployment, especially AWS.
  • Proficiency in Python, including LangChain, and standard data libraries (Pandas, NumPy, etc.).
  • Fluency in English.

Benefits

  • Fully remote working environment (France, Spain, or Portugal)
  • Real ownership: you will define how agentic AI is built at PhantomBuster, not follow someone else's decisions.
  • Freedom to research and adopt new technologies as the space evolves & to make an impact at a small, self-funded, and profitable tech startup by laying the foundation for machine learning and AI.
  • Collaborative and open-minded culture based on rationality, humility, honesty, and long-term thinking.
  • €40/month for remote work
  • Home office budget up to €1500
  • 100% of an Alan Blue subscription (french-based contracts)
  • Lunch vouchers - €8 (50% The Phantom Company) / worked day (french-based contracts)
  • Partnership with MokaCare
  • €70 a month benefit for entertainment expenses
  • Book Allowance and Sharing Program

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