Hire the Best Data Scientists in Toronto, ON

Highly skilled Data Science professional with a passion for turning complex datasets into actionable insights. My expertise lies in designing machine learning models, conducting statistical analyses, and creating compelling data visualizations that drive informed decision-making and measurable results. With experience spanning multiple industries, including [mention specific industries, e.g., finance, healthcare, or retail], I have a proven track record of solving challenging problems and delivering impactful solutions tailored to clients' unique needs. I am adept at collaborating with cross-functional teams and stakeholders to align data-driven strategies with business goals. My Expertise Includes: Developing predictive models and machine learning solutions for enhanced performance. Designing and implementing interactive dashboards and visualizations for actionable insights. Performing statistical analysis and data preprocessing for cleaner, more accurate results. Working with tools like Python, R, SQL, TensorFlow, and Tableau to build efficient solutions. I pride myself on my ability to stay ahead of emerging technologies and continuously expand my skill set. Whether you're looking to unlock hidden patterns, streamline processes, or harness the full potential of your data, I'm here to bring your vision to life. Let’s collaborate to achieve your goals through innovative data science solutions. Together, we’ll power your projects with insights that make a difference.

𝐈 𝐨𝐟𝐟𝐞𝐫 𝐚 𝟓-𝐃𝐚𝐲 𝐫𝐢𝐬𝐤-𝐟𝐫𝐞𝐞 𝐭𝐫𝐢𝐚𝐥: 𝐈 𝐬𝐭𝐚𝐫𝐭 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧 𝐰𝐢𝐭𝐡 𝐲𝐨𝐮𝐫 𝐝𝐚𝐭𝐚 and 𝐲𝐨𝐮 𝐜𝐨𝐧𝐭𝐢𝐧𝐮𝐞 𝐨𝐧𝐥𝐲 𝐢𝐟 𝐲𝐨𝐮 𝐬𝐞𝐞 𝐭𝐡𝐞 𝐫𝐞𝐬𝐮𝐥𝐭𝐬. I'm a Machine Learning Engineer and former Aerospace Engineer, founder of Gless AI – a Toronto-based AI agency. I specialize in RAG, Large Language Models, Chatbots, and AI agents. 𝐖𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐛𝐮𝐢𝐥𝐝 𝐟𝐨𝐫 𝐲𝐨𝐮: - AI agents that automate multi-step workflows (sales ops, support, internal tools) - Chatbots that handle real customer conversations - not just FAQs - RAG systems that turn messy documents into accurate, reliable answers - AI pipelines that process text, images, audio, and documents into structured outputs - End-to-end LLM integrations into your existing systems (CRM, ERP, APIs) 𝐓𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤 (𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲): - AI Agents & Workflows: LangGraph, MCP, Agentic RAG, OpenClaw, n8n - LLMs: OpenAI (GPT-4/5), Claude, Gemini, Mistral, Llama, Qwen - RAG & Vector DBs: Qdrant, Milvus, FAISS, hybrid search, GraphRAG, Pinecone 𝐃𝐚𝐭𝐚 𝐏𝐫𝐢𝐯𝐚𝐜𝐲 & 𝐎𝐰𝐧𝐞𝐫𝐬𝐡𝐢𝐩: - On-premise deployment available – your data never leaves your infrastructure - Full source code handoff – no vendor lock-in, no monthly fees - Open-source models (LLaMA, Mistral, Qwen) deployable on your own servers for regulated industries I’m transparent about scope, timelines, and feasibility. I don’t promise unrealistic “build ChatGPT in a week” projects - I deliver working systems that actually solve the problem. 𝐖𝐡𝐲 𝐢𝐭 𝐰𝐨𝐫𝐤𝐬: · I'm straightforward – if your problem can be solved simply, I'll tell you that instead of overselling · I move fast – most clients see a working prototype within 2 days · You own everything – full source code, no subscriptions, no lock-in · I've built and sold a business myself, so I treat your budget like mine Happy to chat about your project and just have a general conversation about whether AI will replace us. :)

𝐄𝐱𝐩𝐞𝐫𝐭-𝐕𝐞𝐭𝐭𝐞𝐝: 𝐓𝐨𝐩 𝟏% 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 Want to build a new product, a custom AI solution, or get help with setting up AI workflows? Let's talk. I'm an expert software engineer & data scientist with 10+ years of experience (4 years at Meta). Earned the Expert Vetted badge going through the interview with Upwork (only visible to enterprise clients). I help founders and businesses design and ship production-ready automations and software — and I also act as an AI workflow consultant, identifying where automation and LLM systems can meaningfully reduce costs and improve operations. Things I help with: - AI transformation & workflow automation - Modern, clean, responsive web apps / MVPs - AI / LLM / RAG system design & deployment - API integrations with existing CRMs / billing / ops systems - Secure SQL / NoSQL / distributed architectures - Infrastructure that scales If you’re launching a new software / AI product or exploring how AI can streamline your business, I can both design the strategy and build the system end-to-end. Looking forward to partnering together in taking your ideas and business to the next level!

I help businesses deploy AI systems that create real operational value: automating workflows, improving customer and employee experiences, and turning internal data into reliable, actionable answers. If you need AI agents that can actually complete tasks, a RAG system your team can trust, or an LLM application that is secure and production-ready, I can help. I hold a Ph.D. in Computer Science, I’m Upwork Expert-Vetted, and I’ve earned $100K+ on Upwork with a perfect 5.0 rating across AI-focused projects and 2,400+ hours billed. Working with me, YOU CAN: ✅ Launch AI systems that work in production, not just in demos ✅ Automate repetitive workflows and reduce manual operational load ✅ Improve retrieval quality so teams and customers get more accurate answers ✅ Reduce LLM cost through better architecture, routing, caching, and evaluation ✅ Build secure, observable, and maintainable AI systems with senior-level engineering ✅ Expect clear communication, realistic timelines, and strong project ownership Why clients hire me: Clients usually bring me in when the problem is technically demanding, quality matters, and failure in production is not acceptable. I work with founders, CTOs, and product teams that need more than a prototype, they need a system that is reliable, scalable, and useful in day-to-day business operations. How I help businesses: AI Agents & Workflow Automation I build AI agent systems that can handle multi-step workflows, use tools, recover from errors, and complete business processes reliably. Business value: • Reduce repetitive manual work • Speed up operations across teams • Improve consistency in execution • Enable AI systems that take action, not just answer questions Typical use cases: • Customer support workflows • Commerce operations • Document and approval processes • Internal copilots for teams • Cross-system workflow automation Tech: LangGraph, CrewAI, AutoGen, custom orchestration, state machines, retries, fallback logic, human-in-the-loop workflows RAG Systems & Knowledge Assistants I build enterprise RAG pipelines that improve retrieval quality and generate grounded, source-backed answers from your data. Business value: • Faster support resolution • Better employee productivity • Reduced time spent searching across systems • More trustworthy AI responses with citations and grounding Tech: hybrid search (BM25 + dense), semantic chunking, reranking, citation grounding, evaluation pipelines, Pinecone, Weaviate, Qdrant, Milvus, pgvector, Elasticsearch Production LLM Applications I design and build LLM-powered applications that are reliable, scalable, and maintainable. Business value: • Faster product delivery • Better end-user experience • Lower risk when moving from prototype to production • Systems built to evolve with your business Tech: Python, FastAPI, OpenAI, Claude, Gemini, Mistral, Llama, Docker, Kubernetes, AWS, GCP, Azure Safety, Guardrails & Observability I help businesses deploy AI responsibly with the protections needed for real-world use. This includes: • Prompt-injection defenses • PII detection and redaction • Secure tool execution • RBAC / SSO • Audit logging, tracing, and monitoring • Red-team evaluation and reliability testing Cost & Quality Optimization I help clients improve output quality while controlling operating cost. This includes: • Model routing • Caching • Token controls • Evaluation-driven optimization • Reliability improvements based on measurable system behavior Selected production systems: • YappyBuy (Commerce): Built a live multi-agent commerce platform supporting cart operations, shipment tracking, and cross-channel workflow execution for real users • Ametros Learning (EdTech): Built an AI-powered learning platform where instructors create content with AI tools and students receive real-time, context-aware feedback from a multi-agent tutoring system • Seemas (FinTech): Built coordinated AI workflows for financial reporting, loan evaluation, and tax assessment with a focus on structured outputs, reliability, and production use Clients usually hire me when: → their current AI system works in testing but breaks in production → their RAG pipeline returns irrelevant or inconsistent answers → they need agents that can execute tasks, not just chat → they want senior help with both architecture and hands-on implementation → LLM cost, reliability, or observability has become a problem Core stack / keywords: LangGraph, LangChain, LlamaIndex, CrewAI, AutoGen, DSPy, OpenAI API, Claude, Gemini, Mistral, Llama, RAG, AI Agents, FastAPI, Python, Docker, Kubernetes, AWS, GCP, Azure, Pinecone, Weaviate, Qdrant, Milvus, pgvector, Elasticsearch, Redis, PostgreSQL, MongoDB, LangSmith, RAGAS, DeepEval, TruLens, OpenTelemetry, Datadog I’m a strong fit if you need: → a production-grade AI system, not just a prototype → better retrieval quality, stronger agent orchestration, or safer deployment → a senior engineer who can build the system end to end

Need a data scientist who can turn complex business problems into practical AI and analytics solutions? I am a data science consultant with 15+ years of experience helping organizations improve forecasting, pricing, decision-making, and operational performance through machine learning, optimization, and AI. What differentiates me: 🔸 15+ years of experience in data science, machine learning, and optimization 🔸 PhD in Physics 🔸 Experience analyzing petabytes of data at CERN, contributing to the discovery of the Higgs boson 🔸 Lead enterprise data science, machine learning, and AI initiatives for a global technology company 🔸 Expert-Vetted on Upwork 🔸 100% Job Success Score 🔸 Trusted advisor to executives and business leaders 🔸 Experience across banking, retail loyalty programs, media measurement, distribution, logistics, and early-stage startups Areas of expertise: 🔸 Predictive analytics and machine learning 🔸 Forecasting and demand planning 🔸 Pricing optimization and revenue management 🔸 Mathematical optimization (mixed-integer programming, non-linear optimization) 🔸 NLP and LLM-powered applications 🔸 Custom analytics platforms and dashboards 🔸 Python, PySpark, Scikit-Learn, XGBoost, SQL, Snowflake, Databricks, Google Cloud, APIs, and automation Examples of recent projects: 🔸 Procurement Optimization Designed a mixed-integer optimization solution to determine optimal purchasing quantities across multiple suppliers while accounting for inventory requirements, price breaks, and free-shipping thresholds. The solution saves the client thousands of dollars each week through optimized purchasing decisions. 🔸 Forecasting and Demand Planning Designed and implemented custom forecasting models to predict future demand and support resource allocation, inventory planning, and business decision-making. 🔸 Lead Scoring and Propensity Modeling Developed machine learning models to predict lead conversion likelihood, enabling sales teams to prioritize high-value opportunities. Models were deployed into production environments integrated with SQL databases. 🔸 Pricing Simulation and Optimization Built pricing simulation and optimization tools to estimate the impact of pricing decisions on profitability, customer churn, and growth. Implemented optimization models to maximize revenue and profit while respecting business constraints. 🔸 AI-Powered Decision Support Designed custom analytics applications and decision-support systems combining machine learning, optimization, and business rules to support strategic decision-making. 🔸 Automation and Desktop Applications Developed lightweight desktop applications that automate repetitive business processes and integrate with Google Sheets, CSV/Excel files, APIs, and internal systems. 🔸 Interactive Analytics Platforms Built custom Streamlit dashboards and analytics applications for forecasting, pricing optimization, reporting, and AI-driven decision support. Applications can be integrated with Snowflake, APIs, databases, Google Sheets, and machine learning models. Whether you need a predictive model, forecasting solution, optimization engine, AI application, or a trusted advisor to help shape the solution, I would be happy to discuss your project.

Professional researcher and data scientist with health, human resources, and social sciences expertise. More than 16 years freelance experience. Deliverable focused. A "Top Rated" freelancer, Joanne is in the top 10% of all Upwork users. Top Rated plus designation is only awarded to those with experience managing large scale project. When you choose to work with a Top Rated professional, you can be confident that you’ve partnered with a professional that has a track record of providing great service to clients on Upwork. My goals are: 1. to use technology to streamline how we gather and analyze information; 2. to use my research design, analytics and informatics experience to make your information meaningful and actionable; 3. to use my exceptional writing about statistics, research, and technical information to take your deliverables to the next level so you can demonstrate results. Talk to me about your data challenge or marketing research questions; about designing your online surveys and data collection tools; or about managing your consumer online panel. With data in hand, talk to me about data mining, statistical analyses, interpreting your results, and about packaging it all in a concise and professional report. I am interested in applying my expertise to short term projects using tools such as Alchemer surveys as well as analytics using DisplayR, MS Excel, Power Point, SPSS, Claude, ChatGPT, and Adobe Creative Suite.