About Me
I am a freelance AI Engineer and Computer Vision specialist with a strong background in machine learning, predictive analytics, and software development. My expertise spans across various industries, including finance, cybersecurity, and automation. I thrive on building innovative AI-driven solutions that solve real-world problems.
What I Do Best
• AI & Machine Learning – Developing predictive models, image recognition systems, and NLP applications.
• Computer Vision – Object detection, image classification, facial recognition, and custom dataset creation.
• Financial & Market Predictions – AI-driven forecasting models for stocks, cryptocurrencies, and macroeconomic trends.
• Custom AI Tools & Automation – Building intelligent bots, AI-powered analytics, and workflow automation.
My Background
I am currently pursuing a Computer Science degree at the University of London, specializing in Artificial Intelligence and Machine Learning. My coursework and self-driven projects focus on deep learning, computer vision, and data analytics.
With a military background, I bring discipline, strategic thinking, and adaptability to every project I take on. I also have experience in health & safety consulting, which gives me insights into risk management and compliance.
Why Work With Me?
✅ Problem-Solving Mindset – I approach every challenge analytically, ensuring efficient and scalable solutions.
✅ Strong Work Ethic – My military experience instilled discipline, precision, and reliability in my work.
✅ Clear Communication – I prioritize transparency, structured reporting, and collaborative teamwork.
✅ Continuous Learning – Always staying up to date with AI trends, tools, and technologies.
Let’s Build Something Great!
I am open to freelance AI projects, consulting, and collaborations. Whether you need an AI-powered solution, market predictions, or automation tools, let’s connect and discuss how I can help!
Machine Learning
Time Series Forecasting
Computer Vision
AI Image Generation
Python
Stable Diffusion
Deep Learning
Google Cloud Platform
Gradio
pandas
Python Scikit-Learn
PyTorch
Predictive Modeling
Prompt Engineering
Mikita D.
Warsaw, Poland
$85/hr
5.0
31 jobs
Currently available for additional Enterprise Tableau / BI engagements (part-time or parallel projects).
Certified Tableau Partner | 7+ Years in BI & Data Visualization | Expert in Market, Financial, Marketing, Operations & E-commerce Dashboards | Tableau | Data Visualization | Business Intelligence | KPI Dashboard | Data Analytics | Power BI | SQL
I help organizations turn complex data into clear, actionable dashboards that drive results. With over 7 years of experience in Business Intelligence and Data Visualization, I’ve worked with leading consulting firms (Big 3 & Big 4), startups, and global enterprises to deliver high-impact analytics solutions.
I specialize in designing executive-ready dashboards for finance, marketing, operations (HR), and e-commerce—helping businesses understand performance, optimize costs, and identify growth opportunities.
Core Expertise:
- Tableau (Desktop, Prep, Server) and Power BI
- BI Strategy, KPI Design, and Data Modeling
- Dashboard Development and Automation
- UX-focused, interactive, and app-like dashboard design
Industry Focus:
Finance | Marketing | Market Analytics (Competitor & Share Reports) | E-commerce | Operations & HR
Certified Tableau Data Analyst & Desktop Specialist.
Full-time freelancer delivering enterprise-grade BI solutions with speed, precision, and clarity.
Analytics
Dashboard
Data Visualization
Business Intelligence
Data Science
Business Analysis
ETL
Operations Analytics
Tableau
Data Analytics & Visualization Software
Data Analysis
Data Analytics
Data Cleaning
Data Engineering
SQL
Jacek S.
Kalwaria Zebrzydowska, Poland
$35/hr
5.0
2 jobs
💡 Transforming Business with Advanced AI Solutions
I specialize in building AI-driven applications, integrating cutting-edge LLMs, and deploying scalable AI systems tailored to your business needs. My focus is on delivering measurable results through innovative, secure, and efficient AI solutions.
- Key Expertise
✅Custom LLM Development: GPT-4, Claude, Llama, HuggingFace.
✅AI Agents: Chatbots, RAG pipelines, SQL agents, voice systems.
✅LangChain Ecosystem: LangChain, LlamaIndex, LangFlow.
✅Data Solutions: Vector databases (Pinecone, FAISS), SQL, embeddings.
✅Generative AI: Text-to-speech, speech-to-text, image generation.
✅Deployment: Scalable AI using AWS/GCP, Docker, CI/CD pipelines.
- How I Can Help You
✅Automate workflows with AI agents and RAG systems.
✅Build conversational AI tailored to your business.
✅Fine-tune LLMs for specific industries or tasks.
✅Integrate AI with databases, APIs, and external data.
✅Deploy secure, scalable AI solutions in cloud environments.
Let’s work together to bring your AI vision to life!
Large Language Model
Data Science
Natural Language Processing
AI Agent Development
OpenAI API
LLaMA
Vector Database
Data Scraping
Web Scraping
Python
PyTorch
Generative AI
Grzegorz W.
Siedlce, Poland
$115/hr
5.0
45 jobs
I'm an experienced data scientist specializing in data analysis, preprocessing, and AI-based solutions. I help clients identify when their real problem is in the data rather than needing complex ML algorithms. I excel in solving complex business challenges through tailored solutions and expert consultation. I'm skilled in advanced math (academic level), AI agents, and data visualization (Looker Studio), which can be a stand-alone consultation or a nice bonus to your project!
I deliver comprehensive end-to-end solutions - from data provider negotiation to preprocessing, modeling, implementation and documentation. I'm also available for consultation.
"Greg knows LLM tools like langchain *really* well. He understood a genuinely tough problem and helped me solve it super fast. Highly recommended!"
"Grzegorz Wiktorowicz, is a great financial developer...he understands the problem very quick and and dig that problem in minute manner and sloves it...hoping to catch with him in future projects .thanku"
"Thank you very much sir for the super fast and extremely professional algorithm and program creation.
I am super happy that we have met and I definetely would like to work together in many many more projects together."
"Very professional and quick!
Extremally detailed response and provided with ways to improve our business as an extra! We will for sure hire again! Thanks again"
With over a decade of experience, I've successfully addressed a wide range of business issues, including internet casinos, sports betting, logistic optimization, and stock trading, among others. Employing detailed analysis and strategic resource planning, I've consistently delivered results that meet or exceed client expectations.
Proficient in Python, C, and SQL, I hold cloud-native certifications as a Google Cloud ML Engineer and Data Engineer. Beyond task execution, I possess a deep understanding of methodologies, their strengths, and limitations. My background as a former scientist uniquely positions me to ensure your projects align with best practices and achieve your objectives.
My adaptability and extensive knowledge make me an ideal partner for your data science needs. Whether you require data-driven solutions, want to discuss your project's unique demands, or need guidance on best practices, please don't hesitate to reach out. Initial consultations are free, and I'm eager to collaborate with you to achieve your goals.
EXPERTISE:
- data science and analytics
- data engineering and management
- Machine learning and AI
- Quant trading
- Data visualization and storytelling
- Cloud engineering
- consultation
SKILLS:
Python (full data stack, incl. Pandas, SciPy, Scikit-Learn, jupyter, plotly)
Time Series Analysis/Forecasting (financial, trading, observations, predictions)
Data visualisation
- Looker Studio Masterclass certification
GCP (BigQuery, Storage strategies, ETL, ML, migration, efficiency and cost reduction)
- Google Cloud Professional Data Engineer certification
- Google Cloud Machine Learning Engineer certification
LLM (langchain, pinecone, llama.cpp, transformers, OpenAI, chatGPT)
Git, docker, MATLAB, slurm, bash, linux, SQL (GoogleSQL, Postgres, MySQL)
Statistics (academic level, incl. data analysis and modelling, Monte Carlo, bootstrapping, hypothesis testing)
>> Drop me a massage so we can analyze your needs together (it's free!)
Python
MATLAB
Machine Learning
Data Science
Time Series Analysis
ChatGPT
Astrophysics
Optimization Modeling
Data Analysis
Google Cloud Platform
Statistics
Quantitative Analysis
LLM Prompt Engineering
LangChain
BigQuery
Mathematics
Bartosz K.
Warsaw, Poland
$100/hr
5.0
1 jobs
Data Analyst & Business Insight Specialist with 15+ years of experience helping companies turn messy data into clear, decision-ready insights.
I work at the intersection of business, finance, and analytics — building KPI systems, dashboards, forecasts, and models that actually get used, not just reported. I’ve supported marketplaces, e-commerce platforms, banks, and travel businesses in areas like growth analysis, performance tracking, market entry decisions, and operational optimization.
My strength is not just “doing the analysis”, but asking the right questions, structuring the problem, validating the data, and translating numbers into clear recommendations for founders, managers, and non-technical stakeholders.
Typical problems I help with:
- KPI frameworks & dashboards for e-commerce / SaaS / marketplaces
- Financial & performance models (P&L, break-even, scenarios)
- Funnel, retention & conversion analysis
- Forecasting demand, revenue, or operational risks
- Automating recurring reports and decision workflows
Tools-wise, I’m strongest in Excel / Google Sheets (advanced), SQL, and BI dashboards, with a strong focus on clarity, reliability, and business logic.
Beyond commercial projects, I also support a sea turtle conservation NGO in Mexico, where I built a full analytics system from scratch — from data collection to dashboards — helping improve operational effectiveness with the same analytical mindset I use in business projects.
I value independence, ownership, and meaningful work, and I’m most effective in environments where data is meant to drive real decisions, not just fill reports.
Financial Planning
Analytical Presentation
Management Consulting
Community Goals & KPIs
Dashboard
Business Consulting
Microsoft Excel
Google Sheets
Data Analysis
Tsimafei S.
Bialystok, Poland
$55/hr
5.0
4 jobs
🎁 𝐆𝐄𝐓 𝐘𝐎𝐔𝐑 𝐅𝐑𝐄𝐄 𝐀𝐈 𝐑𝐄𝐀𝐃𝐈𝐍𝐄𝐒𝐒 𝐀𝐔𝐃𝐈𝐓 - send me a message and I'll analyze your stack, data pipelines, and AI use cases.
I'm a Machine Learning Engineer & AI Python Developer with 10+ years of experience building Machine Learning systems, AI solutions, AI Agents, and production infrastructure for SaaS, fintech, manufacturing, healthcare, and enterprise companies across the US and Europe.
✅ I work with a team of 90+ engineers across Machine Learning, AI, DevOps, and Backend disciplines.
Delivering end-to-end Machine Learning solutions from data pipelines and model development to deployment, monitoring, optimization, and scaling in production environments.
🎯 What I bring to your product as a Machine Learning Engineer and AI Agent Developer:
✔️ Over 10 years of commercial experience as a Machine Learning Engineer, AI Developer, Python Developer, and Data Scientist, building scalable products for startups and enterprise organizations.
✔️ As a Machine Learning Engineer, I design and build production-grade Machine Learning systems using Python, delivering measurable business outcomes. My solutions have improved operational efficiency by up to 200% and reduced infrastructure costs by as much as 55%.
✔️ As an AI Agent Developer, I build AI Agent systems using LangGraph, CrewAI, OpenAI, Claude, Gemini, Llama, and Mistral. I develop multi-agent architectures for customer support, internal automation, and enterprise workflows.
✔️ My AI Agent experience includes AI sales agent systems, AI business development automation, AI agents for Etsy marketing workflows, and AI agents supporting Pinterest marketing operations.
✔️ As an AI Developer, I deliver AI copilots, Generative AI applications, and LLM-powered platforms using GPT-4, GPT-5, Claude, and open-source models integrated directly into business processes.
✔️ As a Machine Learning Engineer and Data Scientist, I specialize in NLP, semantic search, recommendation systems, anomaly detection, Named Entity Recognition, sentiment analysis, and intelligent automation.
✔️ As a Python Developer, I build Retrieval-Augmented Generation (RAG) systems using Pinecone, Weaviate, Chroma, and enterprise knowledge bases connected to SQL, PostgreSQL, MongoDB, and CRM platforms.
✔️ As a Machine Learning Engineer specializing in Computer Vision, I develop object detection, segmentation, OCR, and Document AI systems using YOLOv8, Detectron2, OpenCV, Amazon Textract, and Google Document AI.
✔️ As an AWS DevOps Engineer and Cloud Engineer, I design highly available infrastructure using AWS, Kubernetes, Docker, Terraform, Jenkins, Kafka, Prometheus, Grafana, and NGINX.
✔️ As an Azure DevOps Engineer, I deploy Machine Learning workloads using Azure DevOps, Azure Data Factory, Terraform, and cloud-native deployment strategies for enterprise environments.
✔️ I regularly collaborate with Data Scientists, Data Analysts, Web Developers, Product Managers, and engineering teams to transform prototypes into scalable production systems used by thousands of end users.
📊 My Achievements in Numbers:
🔶 Machine Learning Engineer for Enterprise Support Platform
▪️ Reduced support workload equivalent to 3 full-time employees.
▪️ Decreased response times from hours to seconds.
▪️ Improved customer satisfaction metrics by more than 40%.
▪️ Processed millions of support interactions annually.
🔶 AI Agent Developer for Fintech Company
▪️ Built and deployed multiple AI Agent workflows in production.
▪️ Automated more than 80% of repetitive operational tasks.
▪️ Reduced manual processing time by 70%.
▪️ Increased team productivity across multiple departments.
🔶 Machine Learning Engineer for Manufacturing Company
▪️ Reduced defect escape rates to near zero using Computer Vision.
▪️ Eliminated thousands of hours of manual inspection work annually.
▪️ Improved quality control efficiency by more than 150%.
🔶 AWS DevOps Engineer for SaaS Platform
▪️ Increased deployment frequency from 1 deployment per month to 120.
▪️ Reduced deployment times by 85%.
▪️ Lowered infrastructure costs by 55%.
▪️ Improved platform reliability and scalability across cloud environments.
Why should you hire me as your Machine Learning Engineer?
▪️ 10+ years of experience in Machine Learning, AI Development, Python, and Data Science.
▪️ 50+ Machine Learning and AI projects successfully delivered.
▪️ 90+ engineers available for large-scale engagements.
▪️ Experience across SaaS, fintech, healthcare, manufacturing, and enterprise industries.
▪️ Expertise in Machine Learning, AI Agents, Computer Vision, NLP, RAG, and Generative AI.
▪️ Strong background in AWS, Azure DevOps, Kubernetes, and Terraform.
▪️ Hands-on experience taking Machine Learning and AI products from concept to production.
If you're looking for a Machine Learning Engineer, AI Agent Developer, AI Developer, Python Developer, or Data Scientist who can design, build, deploy, and scale production-ready AI systems.
Machine Learning
DevOps
Artificial Intelligence
Python
PyTorch
TensorFlow
Deep Learning
Natural Language Processing
Amazon Web Services
Docker
Kubernetes
CI/CD
JavaScript
AI Development
Computer Vision
Data Analysis
Neural Network
Machine Learning Model
Data Science
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