Freelance Python / Ruby Engineer | Data & AI Agents

IMPORTANT: TIME ZONE AND APPLICATION PROCESS This role is only open to candidates located within two hours of Paris time. You must be available to work Monday to Friday from 9:30 to 18:30 Paris time, with a one-hour lunch break. Applications from candidates outside this time-zone range will not be considered and will not receive a response. Please apply through this job posting only. We do not accept applications or enquiries by email or phone. Please do not call or email us about this position. Only applications submitted through Join will be reviewed. ---- Adomik is the agentic AI platform for advertising performance and monetization. We unify fragmented advertising data and power specialized AI agents that help advertising and media teams understand performance, make decisions and act faster. We are looking for a freelance engineer to join our Tech team on a long-term, full-time engagement. The role sits at the intersection of Python, Ruby, data analysis and AI agents. Tasks Develop and maintain Python backend services and REST APIs. - Contribute to Ruby codebases, preferably Ruby on Rails. - Build and evolve AI agents and MCP tools for advertising-data use cases. - Connect data processing, SQL queries, analytical methods and statistical reasoning to production features. - Work on use cases such as revenue analysis, anomaly detection and explanations of revenue variations. - Design reliable workflows where numerical computations remain deterministic and AI models handle language-related tasks. - Work with data platforms and cloud services such as Snowflake and AWS. - Deliver features from design to production. - Contribute to testing, code reviews, CI/CD, documentation and sound engineering practices. - Collaborate closely with the Tech, Product, Data Engineering and Data Science teams. Requirements Professional experience with Python in production. - Professional experience or strong familiarity with Ruby. Ruby on Rails experience is a plus. - Experience in data analysis or data science. - Strong SQL skills and experience working with analytical data. - Experience building backend applications or REST APIs. - Experience with Git, testing, code reviews and modern software development practices. - Ability to work independently and deliver production-ready features. - Strong communication skills and a pragmatic approach to problem solving. - Fluent English, both written and spoken, with confidence in technical discussions and documentation. - French is a plus, but not required. - Full-time availability, approximately 40 hours per week. - Availability to work Monday to Friday from 9:30 to 18:30 Paris time. - Location within two hours of Paris time throughout the year. - MCP, LLM agents, Snowflake or AWS Bedrock experience is a plus, but not mandatory. Benefits Long-term freelance engagement. - 100% remote work. - Opportunity to work on real-world AI agents and advertising-data products. - Direct collaboration with Tech, Product, Data Engineering and Data Science teams. - End-to-end ownership, from data and analytics to production features. - Modern technical environment including Python, Ruby, Snowflake, AWS and AI technologies. - International team and daily collaboration in English. Please apply through this job posting only. We review applications submitted through Join and will contact shortlisted candidates directly. The recruitment process may include a technical assessment and a technical interview with the Tech team.