CrawlJobs Logo

Data Scientist Senior - AI Marketplace Platform

France, Paris or Bordeaux · Job Posted April 16, 2026
Apply Position
Job Link Share

Job Description

As part of our Data team (60+ people), your main mission will be to prototype, iterate, and put algorithms into production in collaboration with the Product teams, Data Engineers, and Development teams. The topics you will be working on will have a real impact on 450+ of the world's largest retailers (Best Buy, Decathlon, Leroy Merlin, Macy's, etc.) and 100k+ sellers. The goal is to make the most of our rich and varied data in order to increase their revenue, optimize the operational management of their businesses, and ensure the security of users and transactions.

Job Responsibility

  • Analyze and prepare data, prototype algorithms
  • Put them into production in collaboration with Data Engineers and development teams
  • Create dashboards to illustrate the relevance of algorithms and monitor production
  • Present results at weekly data science meetings and participate in team brainstorming sessions
  • Liaise with other teams to refine use cases, user experience, and integration methods

Requirements

  • Background in machine learning, mathematics, computer science (or a related field)
  • 6-8 years of experience in a similar position
  • Significant experience in applied ML in a business setting
  • Good knowledge of machine learning and deep learning algorithms (particularly state-of-the-art architectures, such as Transformers)
  • Proficient in Python, Tensorflow, and/or PyTorch
  • Pragmatic, data-driven, and business-oriented with good team spirit
  • Like to take ownership of projects and are curious
  • Have a positive attitude: respect and kindness are part of your values

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Similar Jobs for

Data Scientist Senior - AI Marketplace Platform

8 matching positions

Data Scientist Senior - AI Marketplace Platform

As part of our Data team (60+ people), your main mission will be to prototype, i...
Location
Location
France , Bordeaux
Salary
Salary:
Not provided
mirakl.com Logo
Mirakl
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Background in machine learning, mathematics, computer science (or a related field)
  • 6-8 years of experience in a similar position
  • Significant experience in applied ML in a business setting
  • Good knowledge of machine learning and deep learning algorithms (particularly state-of-the-art architectures, such as Transformers)
  • Proficient in Python, Tensorflow, and/or PyTorch
  • Pragmatic, data-driven, and business-oriented with good team spirit
  • Like to take ownership of projects and are curious
  • Positive attitude: respect and kindness are part of your values
Job Responsibility
Job Responsibility
  • Prototype, iterate, and put algorithms into production in collaboration with the Product teams, Data Engineers, and Development teams
  • Analyze and prepare data, prototype algorithms
  • Put them into production in collaboration with Data Engineers and development teams
  • Create dashboards to illustrate the relevance of algorithms and monitor production
  • Present results at weekly data science meetings and participate in team brainstorming sessions
  • Liaise with other teams to refine use cases, user experience, and integration methods
  • Fulltime
Read More
Arrow Right

Senior Data Scientist

As part of Microsoft AI, we run Microsoft’s unified monetization platform across...
Location
Location
China , Beijing
Salary
Salary:
Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Doctorate in Data Science, Mathematics, Statistics, Econometrics, Economics, Operations Research, Computer Science, or related field AND 1+ year(s) data-science experience OR Master's Degree in related field AND 3+ years data-science experience OR Bachelor's Degree in related field AND 5+ years data-science experience OR equivalent experience
  • 5+ years of professional experience using analytics to solve product or business problems in data science, applied research, or related roles
  • 3+ years of experience in the digital advertising, e-commerce, marketplace, or online platform industry
  • Demonstrated track record of driving measurable business impact through data science initiatives
  • Proficiency in Python, SQL, and ML frameworks (e.g., Scikit-learn, TensorFlow, PyTorch)
  • Experience with cloud platforms (Azure preferred) and big data technologies
  • Solid understanding of statistical modeling, predictive analytics, and experimentation design
  • Excellent communication and stakeholder management skills
  • Proficient English communication oral or in written
Job Responsibility
Job Responsibility
  • Define and optimize marketplace health metrics (e.g., supply-demand balance, auction dynamics, fill rates, match rates) to ensure efficiency and revenue protection
  • Monitor and diagnose marketplace anomalies, identify root causes, and implement solutions to maintain stability and uncover growth opportunities
  • Design troubleshooting frameworks and explore AI-driven solutions to improve live marketplace operations
  • Lead experimentation and A/B testing programs to evaluate pricing, matching, and prediction models, driving performance improvements
  • Develop scalable data products, pipelines, and automated reporting systems to support analytics and machine learning initiatives
  • Build self-service dashboards and tools that enable cross-functional teams to make data-informed decisions
  • Partner with stakeholders to translate business needs into actionable insights, influence product strategy, and present recommendations to senior leadership
  • Fulltime
Read More
Arrow Right

Staff Software Engineer, AI Agent Platform

The Geico AI Agent Platform team is seeking an exceptional Staff Software Engine...
Location
Location
United States , Chevy Chase; New York City
Salary
Salary:
115000.00 - 260000.00 USD / Year
geico.com Logo
Geico
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree in computer science, Engineering, Mathematics, or a related field
  • an advanced degree (master’s or Ph.D.) is highly desirable
  • 6+ years of hands-on experience in designing, implementing, and maintaining multi-tenant AIML systems and platforms in production environments
  • 6+ years of experience working with cloud platforms such as Azure and AWS
  • Extensive expertise in designing and deploying large-scale data pipelines and real-time inference systems and managing the end-to-end AI Agent and/or AIML system development lifecycles, including configuration, evaluation, monitoring, observability and AuthN/AuthR considerations
  • 6+ years of experience working with common backend systems & tools (e.g, Kubernetes, Temporal, OpenSearch, PostgreSQL, Redis, Neo4J, etc.)
  • Deep understanding of Docker, container optimization, and multi-stage builds
  • Experience with Prometheus, Grafana, Open Telemetry and distributed tracing
  • 3+ years of experience building front-end web applications using frameworks such as React and/or Next.JS
  • Deep proficiency in programming languages such as Python, Java, Go, etc., with a strong emphasis on coding excellence
Job Responsibility
Job Responsibility
  • Architect and implement scalable multi-tenant backend systems for building AI agent workflows, including agent configuration, offline evaluation, synthetic data generation, workflow simulation, agent marketplace, etc. using Azure Kubernetes Service (AKS), FastAPI, etc., ensuring economy of scale and control cost of maintenance
  • Collaborate with Design team to architect and implement frontend experiences and workflows for onboarding both technical and non-technical stakeholders, maximizing user adoption and successful AI agent development
  • Develop observability frameworks to ensure 99.9%+ uptime for AI agent platforms through robust monitoring, alerting, and incident response procedures
  • Evaluate and (if desirable) integrate cutting-edge GenAI frameworks, libraries and vendors to maintain a state-of-the-art technology stack, including hybrid cloud solutions with AWS/GCP as backup or specialized use cases
  • Architect and implement scalable, high-performance machine learning platforms and systems capable of processing large data volumes and supporting real-time decision making and workflows
  • Oversee the end-to-end lifecycle of AI agent applications, ensuring robust testing, deployment, and ongoing monitoring
  • Ensure adherence to company production readiness standards, security protocols, and regulatory compliance throughout the development lifecycle
  • Continuously optimize platform performance, reducing latency and improving throughput for AI agent workloads
  • Design and implement backup, recovery, and business continuity plans for hosted platform applications & services
  • Design and maintain robust CI/CD pipelines for ML model deployment using Azure DevOps, GitHub Actions, and MLOps tools
What we offer
What we offer
  • Comprehensive Total Rewards program that offers personalized coverage tailor-made for you and your family’s overall well-being
  • Financial benefits including market-competitive compensation
  • a 401K savings plan vested from day one that offers a 6% match
  • performance and recognition-based incentives
  • and tuition assistance
  • Access to additional benefits like mental healthcare as well as fertility and adoption assistance
  • Supports flexibility- We provide workplace flexibility as well as our GEICO Flex program, which offers the ability to work from anywhere in the US for up to four weeks per year
  • Fulltime
Read More
Arrow Right

Senior Engineering Manager, ML Platform

We’re looking for hands-on builders–intellectually curious, deeply technical lea...
Location
Location
United States , San Francisco, CA; Los Angeles, CA; New York, NY; Seattle, WA
Salary
Salary:
255000.00 - 345000.00 USD / Year
whatnot.com Logo
Whatnot
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4+ years of engineering management experience developing production machine learning systems at consumer-scale loads
  • Bachelor’s degree in Computer Science, Statistics, Applied Mathematics or a related technical field, or equivalent work experience
  • 5+ years of hands-on software engineering experience building and maintaining production systems for consumer-scale loads
  • 1+ years of professional experience developing software in Python
  • Ability to work autonomously and drive initiatives across multiple product areas and communicate findings with leadership and product teams
  • Experience with operational, search, and key-value databases such as PostgreSQL, DynamoDB, Elasticsearch, Redis
  • Experience working with with ML-specific tools and frameworks such as MLFlow, LitServe, TorchServe, Triton
  • Firm grasp of visualization tools for monitoring and logging e.g. DataDog, Grafana
  • Familiarity with cloud computing platforms and managed services such as AWS Sagemaker, Lambda, Kinesis, S3, EC2, EKS/ECS, Apache Kafka, Flink
  • Professionalism around collaborating in a remote working environment and well tested, reproducible work
Job Responsibility
Job Responsibility
  • Own the infrastructure powering AI and ML models across critical business surfaces–supporting growth, recommendations, trust and safety, fraud, seller tooling, and more
  • Guide the prototyping, deployment, and productionization of novel ML architectures that directly shape user experience and marketplace dynamics
  • Help design and scale inference infrastructure capable of serving large models with low latency and high throughput
  • Oversee and evolve real-time feature pipelines that feed both our online and offline stores, ensuring single-second feedback from behavioral signals, high reliability, and model training fidelity
  • Drive feature platform improvements and expand scope to cover non-ML use cases such as fraud rules where point-in-time backtesting is also critical
  • Lead the development of distributed training and inference pipelines leveraging GPUs and both model and data parallelism
  • Optimize system performance by managing resource utilization and developing intelligent feature caching strategies
  • Empower scientists to iterate faster by building abstractions, APIs, and developer tools that simplify the development of near-realtime features and model iteration
  • Roll out ever-better ergonomics around model training and deployment
  • Stretch beyond your comfort zone to take on new technical challenges as we scale AI across Whatnot’s ecosystem
What we offer
What we offer
  • Generous Holiday and Time off Policy
  • Health Insurance options including Medical, Dental, Vision
  • Work From Home Support
  • Home office setup allowance
  • Monthly allowance for cell phone and internet
  • Care benefits
  • Monthly allowance for wellness
  • Annual allowance towards Childcare
  • Lifetime benefit for family planning, such as adoption or fertility expenses
  • Retirement
  • Fulltime
Read More
Arrow Right

Senior Principal Architect

We are seeking a deeply technical Senior Principal Architects to define and driv...
Location
Location
India , Bangalore
Salary
Salary:
Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s Degree in Computer Science or related technical field AND 15+ years of professional software engineering experience, or equivalent practical experience
  • 8+ years of senior technical leadership experience influencing engineers, technical leads, architects, applied scientists, or cross-functional engineering teams across complex platform or product areas
  • Proven experience architecting and delivering large-scale production systems with meaningful reliability, scalability, latency, correctness, availability, security, and operational requirements
  • Deep technical experience in one or more of the following platform areas: AI/ML systems, agentic systems, model-serving infrastructure, decisioning systems, distributed systems, data platforms, workflow platforms, risk platforms, security platforms, or Trust & Safety systems
  • Experience building or technically leading production AI/ML systems, including exposure to modern AI patterns such as LLM-based workflows, retrieval-augmented generation, model orchestration, automated reasoning, human-in-the-loop systems, AI-assisted operational tooling, or agentic workflows
  • Strong understanding of the engineering requirements for deploying AI or decision systems in production, including evaluation, observability, quality measurement, rollout safety, fallback behavior, latency/cost tradeoffs, drift detection, explainability, governance, and operational reliability
  • Experience designing high-integrity systems where decisions must be auditable, reproducible, explainable, governed, and secure, especially when handling sensitive signals, advertiser impact, policy enforcement, risk decisions, or compliance-sensitive workflows
  • Ability to drive clarity from ambiguity, define technical direction, create reusable platform abstractions, and influence execution across multiple teams without relying on direct management authority
  • Strong written and verbal communication skills, including the ability to explain architecture, tradeoffs, risks, sequencing, and technical strategy to senior engineering, science, product, policy, security, and business leaders
Job Responsibility
Job Responsibility
  • AI Platform Architecture and Technical Strategy
  • Define the long-term architecture for the Ads Trust & Safety AI Platform across ingestion, signal acquisition, entity intelligence, retrieval, model orchestration, agentic workflows, decisioning, enforcement, human review, audit, and measurement
  • Translate broad Trust & Safety, Risk, Fraud, Security, and Policy needs into reusable platform capabilities
  • Establish reference architectures, design principles, technical standards, and engineering patterns for high-integrity AI and decisioning systems
  • Drive architecture choices across latency, throughput, quality, cost, explainability, governance, reliability, and operational safety
  • Identify critical platform gaps and create a roadmap that balances near-term delivery with long-term leverage
  • Deep Research Agents and AI-Assisted Investigation
  • Architect platform for Deep Research Agents that investigate domains, landing pages, advertisers, business entities, ownership patterns, web presence, reputation, policy risk, and fraud signals
  • Architect workflows that combine retrieval, crawling, structured evidence extraction, LLM reasoning, policy grounding, risk scoring and human in the loop
  • Architect guardrails for agentic systems, including source provenance, confidence scoring, hallucination controls, audit logs, escalation paths, and human override
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

Our team is at the forefront of transforming digital advertising through intelli...
Location
Location
United States , Mountain View
Salary
Salary:
119800.00 - 234700.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
Job Responsibility
Job Responsibility
  • Collaborate with data scientists, ML engineers, and product teams to define requirements for agentic AI-driven bidding capabilities that observe, reason, and adapt autonomously
  • Architect and implement the next-generation agentic bidding platform, enabling AI agents to monitor marketplace signals, interpret advertiser and user behavior, and continuously optimize bidding strategies
  • Build large-scale data validation and quality frameworks to ensure correctness, consistency, and reliability across all auction-critical signals feeding the AI agents
  • Act as a Designated Responsible Individual (DRI): drive operational excellence, incident management, on-call readiness, and high-availability practices for mission-critical bidding services
  • Develop experimentation and simulation frameworks to validate agent behavior and optimize policies before deployment in live auctions
  • Proactively adopt new patterns, technologies, and engineering practices to improve availability, efficiency, performance, and scalability across the bidding stack
  • Set technical direction, mentor engineers, and foster a culture of high-quality execution, innovation, and accountability
  • Explore and invest in emerging AI techniques - multi-agent systems, adaptive optimization - to enhance the autonomy, intelligence, and impact of the bidding platform
What we offer
What we offer
  • Benefits and other compensation
  • Religious accommodations
  • Reasonable accommodations for disability during application process
Read More
Arrow Right

Distinguished Scientist

In this role, you will define and drive the technical vision for long-horizon, s...
Location
Location
United States
Salary
Salary:
270700.00 - 432300.00 USD / Year
Zillow
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • A PhD in Computer Science, Electrical Engineering, or a related field—or equivalent experience—with emphasis in areas such as foundational LLMs, agentic AI, reinforcement learning, AI planning, or natural language processing
  • 10+ years of hands-on experience building and deploying large-scale AI systems, including at least several years focused on agent-based systems, multi-agent collaboration, or long-horizon conversational assistants
  • Deep, current expertise in generative and agentic AI, including multimodal foundation models, transformers, advanced reasoning models, and post-training techniques (SFT, DPO, RLHF/RLAIF, preference learning, etc.)
  • A track record of leading ambiguous, cross-functional initiatives from concept to production—framing the problem, shaping data strategy, designing models and evaluation, and iterating based on live metrics and user feedback
  • Demonstrated impact in the research community through publications at top venues (e.g., NeurIPS, ICML, ICLR, ACL, EMNLP, CVPR) and/or widely used open-source contributions in LLMs, agentic frameworks, or related areas
  • Experience designing evaluation and supervision frameworks for long-horizon agents, ideally in regulated or high-stakes domains such as finance, healthcare, or large-scale marketplaces, with an emphasis on safety, fairness, and trust
  • Strong technical leadership skills: you mentor senior scientists and engineers, create clarity amid ambiguity, and build alignment across research, engineering, product, and leadership stakeholders
  • Excellent communication skills with the ability to distill complex ideas into clear narratives for executives, cross-functional partners, and external audiences
Job Responsibility
Job Responsibility
  • Own the end-to-end research and technical strategy for long-horizon agentic experiences across shopping, financing, and professional workflows, in close partnership with the Agentic AI, data platform, and product teams
  • Design and advance LLM post-training and evaluation methods (e.g., SFT, preference learning, RLHF/RLAIF, long-context modeling) tailored to supervised, high-stakes journeys in a complex, regulated domain
  • Architect systems that combine persistent memory, tool use, and multi-agent collaboration to deliver consistent, context-rich guidance over long timelines
  • Translate Zillow’s heterogeneous data (text, voice, behavioral, and structured real-estate/transaction data) into agent-ready knowledge and signals, in partnership with data and platform teams
  • Collaborate with product and design to define success metrics, evaluation frameworks, and experiment plans for agentic experiences, including human-in-the-loop supervision and safety reviews
  • Operate as a senior IC with the option to lead a small pod (up to ~5 scientists/engineers) focused on long-horizon agentic systems, mentoring principal-level talent and setting a high technical bar
  • Represent Zillow’s work externally through publications, talks, open-source contributions, and thoughtful engagement with the research community, helping position Zillow as a destination for top agentic AI talent
What we offer
What we offer
  • competitive base salary
  • eligibility for equity awards
  • Fulltime
Read More
Arrow Right

2nd Shift Line 3 Folder

Position Summary: Under immediate direction performs a variety of tasks includin...
Location
Location
United States , Oakland
Salary
Salary:
Not provided
ajinomotofoods.com Logo
Ajinomoto Foods North America, Inc.
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Prefer High School Diploma/GED
  • Be able to work in a fast-paced environment
  • Reliable and self-driven
  • Experience in a food manufacturing plant is preferred
  • Good communication skills
Job Responsibility
Job Responsibility
  • Ensures quality of product being extruded, sliced, battered, breaded, fried and/or refrigerated meets customer specifications, along with company production standards and quality
  • Tends production line by watching for equipment malfunctions or product defects
  • Unpacks and loads raw materials into equipment, unloading work in progress or finished product and moving materials to and from the equipment
  • Inspects and spreads product by hand on moving conveyor belt to ensure product consistency
  • Moves and palletizes finished and packaged product off production lines, along with verifying code dates and labels
  • Stocks and restocks boxes, skids, and liners for next shift and current shift as needed
  • Rotates into any line position as needed due to absences, breaks, etc.
  • Notifies lead or supervisory staff if unusual operations identified
  • Performs general housekeeping duties in production area
  • maintain a clean and safe work area in compliance with existing policy
  • Fulltime
Read More
Arrow Right