Creative designs and Elegant solutions! 🙋 Jey here with a huge obsession on quality and performance and a huge talent for problem solving. 8+ years of experience. JavaScript developer with in depth knowledge of Google cloud, Google workspace and APIs. One of nine gurus with StackOverflow Google Apps Script Gold badge. 🔥My guarantees: 💎 Top of the line quality. 🧐 Attention to detail. ✝️ Integrity: No unnecessary or inflated code lines. Or unnecessary time billing. 🕓 Deadlines: Exceptional adherence to the agreed deadline. 😇 Friendliness: Easy to work with. I provide the following services: - Elegantly crafted solutions based on JavaScript/Google apps script - API integration specialist - GraphQL APIs like Shopify, REST APIs like Rapid API, Alphavantage, XTRF, Sports schedule APIs. - Automation specialist - Zapier/Make/Trello - Dashboard creation - with tools like Retool, Streamlit, Google sheets and Looker studio - Regex Expert - Text extraction/split/manipulation - Experienced in many programming languages like: JavaScript, Python and Shell - Performance and security are given top priorities - Data analysis based on: Google sheets, Pandas and SQL

Ambitious Computer Engineer, experienced and interested in Data Science and Machine Learning Domains and highly skilled in Python. ✨ Languages experienced in: - Python - Java - C ✨Packages experienced in: - NumPy - Matplotlib - scikit-learn - Pandas - PyTorch ✨What I can offer: Data Science: - Data Wrangling - Data Cleaning - Data Visualization - Data Modeling Machine Learning: - Decision Tree - Linear Regression - Logistic Regression - Random Forest - KNN - K-means - CNN - ANN

I build the machine learning and data systems behind trading research: models that generate signals, backtests that hold up, and the pipelines that feed both. Most of the work is the whole chain rather than one piece of it, because the things that decide whether a model means anything sit across the layers: corporate action adjustments, survivorship bias in the symbol universe, gaps in the history, whether the split was ordered in time, whether last night's job actually ran. WHAT I BUILD - Machine learning for markets: feature engineering from market data, model training, validation and tuning, live inference, signal generation, regime and anomaly detection, and performance monitoring once a model is running. - Backtesting and simulation: walk-forward frameworks, Monte Carlo, event studies, realistic slippage, fees and fill assumptions, position sizing and risk parameters. - Market data platforms: ingestion from multiple vendors, cleaning, corporate action handling, schema validation, nightly refresh, gap detection and automatic re-pulls. - Research tooling: browser interfaces over research data, dashboards, portfolio optimisation, spreadsheet models rebuilt as real applications. - Large-scale collection and monitoring: crawling, deduplication, entity resolution across sources, rate-limit handling, 24/7 monitoring with conditional alerts, tens of millions of records and up. RECENT WORK - Machine learning system predicting forward Sharpe ratios across roughly 23,700 US stocks and ETFs. Supervised ensemble models trained on eighteen engineered features from lagged and rolling return and volatility statistics, with a separate model tuned for each horizon from one hour to one year. Time-ordered splits and time-series cross-validation. Trains on GPU about an hour a day, scores hourly, and runs for around $65 a month. - Options research platform holding 800 billion rows across 5TB, unifying 18 sources spanning options chains, underlying prices, social feeds and model outputs. Partitioning and clustering choices cut query costs by over 70%, so it runs for $120 a month rather than thousands. Live and expanding for over a year. - Research platform covering 45 years of market history plus daily alternative-data feeds, queryable from a browser. Asynchronous collectors, warehouse storage, nightly refresh, indicators and event studies, with new listings standardised, scored against defined criteria and ranked by morning. Two hours of research became five minutes, and five hours of manual scanning became zero. STACK Python, pandas, NumPy, scikit-learn, XGBoost, PyTorch, SQL. BigQuery, Postgres, MongoDB. Google Cloud and AWS, TypeScript and React. Cost is a design constraint rather than something discovered on the first invoice. I build infrastructure, not strategies. The edge stays with whoever brought it. Send me a message. Happy to talk through what you are building.

AI & Platform Engineer | LLMs | ML | Cloud | ETL | K8S | 🎓 Master’s @ UC Berkeley I am a production-focused AI & Platform Engineer specializing in building scalable, autonomous systems. With a Master's from UC Berkeley and enterprise experience at Volvo Cars, I bridge the gap between cutting-edge AI research and reliable cloud infrastructure. I don't just build models; I architect end-to-end solutions that are robust, secure, and ready for business. ⸻ ⭐ What I bring to your project: ✅ AI Agent Development: Building multi-agent systems, RAG, and custom assistants that automate complex workflows. ✅ LLM Engineering: Fine-tuning and hosting local LLMs (Llama, Qwen) and integrating advanced APIs for specialized tasks. ✅ Cloud Platform Architecture: Orchestrating scalable infrastructure with Kubernetes, Terraform, and Crossplane on Azure/AWS. ✅ Backend & Data Systems: Designing high-performance APIs and ETL pipelines that handle enterprise-scale data. ✅ Reliability & Ops: Implementing CI/CD best practices and self-service infrastructure to ensure smooth deployments. ✅ Clear Communication: Collaborative partner who prioritizes transparency and business value. I look forward to building something impactful with you. Cheers! ⸻ 💻 Tech Stack Languages: Python, SQL, R, C#, .NET, Bash AI/ML: PyTorch, scikit-learn, Transformers, LangGraph, GPT, Gemini, Qwen Data Engineering: Apache Spark, ETL Pipelines, Data Lakes, SQL Server, MongoDB Cloud: AWS (SageMaker, Lambda, S3, EC2), Azure (Databricks, Synapse, Pipelines), Terraform, Kuberenetes, Helm Backend & DevOps: REST APIs, Docker, Git Visualization & BI: Tableau, DOMO, Excel Certifications: AWS Cloud Practitioner, Tableau Desktop Specialist ⸻ 📞 Let’s work together to build something powerful — whether it’s an AI-powered solution, a cloud-based data pipeline, or a full-stack system that brings your data to life. I’m responsive, results-driven, and ready to deliver value fast.

Greetings! I'm a dedicated Analyst with a strong foundation in both nuclear engineering and data analysis. I bring a unique blend of technical expertise and analytical skills to the table. My journey into the realm of data analysis has been enriched by successfully completing the Professional Data Analyst course by Data Camp. This intensive program has equipped me with advanced proficiency in SQL and Python, allowing me to manipulate and derive meaningful insights from complex datasets. I proudly hold a degree in Nuclear Engineering from the prestigious National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” Ukraine's leading technical institution. This academic background has honed my problem-solving abilities and analytical mindset, essential traits that seamlessly translate into the world of data analysis. What sets me apart is not only my technical acumen but also my genuine passion for both data and energy. I believe in harnessing the power of data to drive informed decision-making, whether it's optimizing nuclear processes or unraveling insights in the realm of energy consumption. My goal on Upwork is to leverage my skills and passion to contribute meaningfully to data-driven projects. Whether it's extracting actionable intelligence from datasets or exploring the intersection of data and energy, I'm ready to bring my expertise to your project. Let's collaborate to transform data into valuable insights and propel your projects to new heights!

AI/ML engineer with a background in mechanical engineering, experienced in Python for regression models, computer vision, and LLM/RAG applications. Recent projects include CFD-based surrogate models for optimization under uncertainty, a gesture-controlled media player using computer vision, and a PDF question-answering web app powered by RAG.

I build production-ready AI automation systems that don’t just demo well, they run reliably in your business, pass audits, and cut costs. With 8+ years in Python development and a proven track record of delivering high quality output, I specialize in AI-first workflows that integrate directly with your existing SaaS tools, databases, and APIs. I bridge the gap between powerful new models like GPT-5, Perplexity, Claude.ai, Gemini etc and the operational demands of real-world businesses. ✅ WHAT I DELIVER: ⭐ Custom GPT Agents & RPA - task-oriented agents with multi-tool workflows, browser automation, and cost control. ⭐ Vertical SaaS Integrations - Shopify, Tekmetric, HubSpot, Google Workspace, Make.com, n8n, Zapier replacement pipelines. ⭐ RAG-based Knowledge Systems - secure vector DB (Pinecone, PGVector) search over private docs with audit logs. ⭐ Full-Stack AI Applications - FastAPI/Flask/Django/NodeJs REST API backends, React/Tailwind frontends, Dockerized & cloud-deployed. ⭐ Data Automation & Reporting - scraping, cleansing, transformation, and live dashboards with eval monitoring. ✅ HOW I WORK: ⭐ Production mindset: acceptance tests, observability (tracing, logs, cost dashboards), prompt versioning. ⭐ Security & compliance: API key vaulting, PII masking, data-residency controls. ⭐ Cost engineering: caching, smart model fallback, batch operations to reduce spend. ⭐ Ongoing improvement: retainers for prompt/tool refinement and rapid iteration. ✅ TECH STACK: Python • FastAPI • Flask • Django REST • Playwright • LangGraph • Redis • PostgreSQL • MongoDB • Pinecone • PGVector • AWS/GCP/Azure • Docker/Kubernetes • CI/CD (GitHub Actions, Jenkins) • RPA & browser automation With me, you’re getting more than just “AI that works”, you’re getting AI that works in production. Lets have a chat!

AI Developer | Automation & Predictive Analytics I build AI systems that take repetitive work off your plate and turn your data into decisions you can act on. Over 5+ years I've automated workflows that ran for hours down to minutes, shipped computer-vision models north of 97.5% accuracy in production, and built specialized models that outperform frontier LLMs on-task at a tiny fraction of the compute. AUTOMATION I design pipelines and AI-driven workflows that replace manual, error-prone processes: LLM-powered document processing, data ingestion and ETL, RAG/MCP integrations, and agentic systems that handle the busywork. I've cut enough of it for clients to gain multiples worth of efficiency gains. PREDICTIVE ANALYTICS I build forecasting, classification, and risk/scoring models that turn historical data into reliable signal - with the feature engineering, evaluation, and monitoring to keep them accurate in production, not just in a notebook. I also handle the engineering around the models - infrastructure, security, and the supporting services that keep everything running in production. When a project calls for it, I work across NLP, computer vision, and custom model training/fine-tuning. SELECTED RESULTS - Automated document processing from hours to minutes with LLMs - 97.5%+ accuracy on production computer-vision inference - Fine-tuned a compact language model to more than 5x the on-task accuracy of a frontier LLM (GPT-5.5) while using thousands of times less compute CORE SKILLS - Predictive analytics & forecasting, machine learning, deep learning, LLMs, computer vision - Workflow & data automation, MLOps, custom model training, optimization & fine-tuning - Supervised, unsupervised (K-Means, HDBSCAN), and reinforcement learning (Stable-Baselines3) STACK - Languages: Python, SQL, Bash - ML/Data: scikit-learn, PyTorch, TensorFlow, XGBoost/LightGBM/CatBoost, pandas - Build & Deploy: FastAPI/Flask, Docker, Kubernetes, Git I care about modular, efficient systems that keep working long after handoff - not one-off scripts that break the moment requirements shift. If you've got a process worth automating or data worth predicting from, let's talk about moving your project forward.

Web Scraping | Data Extraction | ETL Pipeline | Python Automation | Lead Generation | 100% Job Success | $20K+ Earned | 67 Jobs Completed I build production-ready web scrapers, automation scripts, and ETL pipelines that run 𝟐𝟒/𝟕 without 𝐛𝐫𝐞𝐚𝐤𝐢𝐧𝐠. With 𝟓+ years of experience, 𝟏𝟎𝟎% Job Success, and 𝟔𝟎+ completed projects, I help businesses extract clean, structured data from websites, APIs, PDFs, and databases. Delivered directly to CSV, Excel, Google Sheets, MySQL, PostgreSQL, MongoDB, or BigQuery. 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐁𝐮𝐢𝐥𝐝 𝐟𝐨𝐫 𝐘𝐨𝐮: ✅ 𝐖𝐞𝐛 𝐒𝐜𝐫𝐚𝐩𝐢𝐧𝐠 & 𝐃𝐚𝐭𝐚 𝐄𝐱𝐭𝐫𝐚𝐜𝐭𝐢𝐨𝐧: Scrapy, Selenium, Playwright, BeautifulSoup, Requests ✅ 𝐏𝐲𝐭𝐡𝐨𝐧 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐒𝐜𝐫𝐢𝐩𝐭𝐬: Task automation, workflow automation, CRON jobs, bots, RPA ✅ 𝐄𝐓𝐋 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬 & 𝐃𝐚𝐭𝐚 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠: Extract, transform, load. Data cleaning, validation, and deduplication ✅ 𝐋𝐞𝐚𝐝 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐨𝐧 & 𝐂𝐨𝐧𝐭𝐚𝐜𝐭 𝐄𝐱𝐭𝐫𝐚𝐜𝐭𝐢𝐨𝐧: GMB, LinkedIn, Apollo, YellowPages, Yelp, Real Estate ✅ 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 & 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: REST APIs, JSON, XML, webhooks, third-party integrations ✅ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: MySQL, PostgreSQL, MongoDB, SQLite, BigQuery, cloud databases ✅ 𝐂𝐀𝐏𝐓𝐂𝐇𝐀 & 𝐀𝐧𝐭𝐢-𝐁𝐨𝐭 𝐁𝐲𝐩𝐚𝐬𝐬: Dynamic pages, login-protected sites, Cloudflare, proxies 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: 📌 𝐑𝐞𝐚𝐥 𝐄𝐬𝐭𝐚𝐭𝐞 𝐃𝐚𝐭𝐚 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞: Scraped 𝟓𝟎,𝟎𝟎𝟎,𝟎𝟎𝟎+ property listings from Zillow, Realtor, and Redfin. Delivered to PostgreSQL with automated daily updates. 📌 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐏𝐫𝐢𝐜𝐞 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞: Built Scrapy scrapers tracking 𝟐𝟎,𝟎𝟎𝟎,𝟎𝟎𝟎+ SKUs across Amazon, eBay, and Walmart. Helped client optimize pricing and increase margins. 📌 𝐋𝐞𝐚𝐝 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐨𝐧 𝐒𝐲𝐬𝐭𝐞𝐦: Automated extraction of 𝟏𝟎,𝟎𝟎𝟎,𝟎𝟎𝟎+ verified B2B leads from GM + Apollo. Delivered clean CSV with email, phone, and company data. 📌 𝐄𝐓𝐋 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: Built Python pipeline extracting data from 𝟓𝟎𝟎𝟎+ sources, cleaning, and loading to BigQuery for real-time dashboards. 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞: ✓ 100% Job Success: Proven track record of delivery ✓ $20K+ Earned: Trusted by 60+ clients worldwide ✓ 24/7 Availability: Fast response, daily updates ✓ Clean, Documented Code: You own everything, fully explained ✓ End-to-End Solutions: From scraping to database to reporting 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐢 𝐒𝐞𝐫𝐯𝐞: Real Estate | E-commerce | Lead Generation | Financial Data | Healthcare | Travel & Hospitality | Automotive | Job Boards | Directories | Market Research 𝐋𝐞𝐭'𝐬 𝐖𝐨𝐫𝐤 𝐓𝐨𝐠𝐞𝐭𝐡𝐞𝐫: Send me the website you need scraped + your desired output format. I'll analyze it for free and give you a clear timeline and fixed price. Click the "Hire Me" button or send an invitation. I typically respond within 1-2 hours. 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: `Python` `Web Scraping` `Data Extraction` `Data Mining` `ETL Pipelines` `Automation Scripts` `Scrapy` `Selenium` `Playwright` `BeautifulSoup` `Requests` `Pandas` `NumPy` `API Integration` `REST API` `JSON` `MySQL` `PostgreSQL` `MongoDB` `SQLite` `BigQuery` `Cloud Functions` `Google Sheets Automation` `Lead Generation` `Real Estate Scraping` `E-commerce Scraping` `CAPTCHA Solving` `Proxy Rotation` `CRON Jobs` `Task Automation` `Workflow Automation` `Bot Development` `Data Cleaning` `Data Validation` `Data Normalization`

I build high-performing websites and web applications that help businesses generate more leads, streamline operations, and scale with confidence. Why clients hire me: • 100% Job Success on Upwork • All 5-star client reviews • 10+ years of software engineering experience • Over $30K in projects successfully delivered on Upwork • Founder of Konversa, one of the largest AI website builders in Latin America and the U.S. I specialize in designing and developing modern, scalable websites and custom web applications that are fast, secure, and built around your business goals. Whether you need a landing page that converts, a custom SaaS platform, an eCommerce store, or a complex web application, I deliver solutions that are built for long-term growth and easy to maintain. Core Expertise • Custom Website Development • Full Stack Web Applications • React, Next.js, Vue.js & Modern Frontend Development • Node.js, Laravel, Python & Backend Development • WordPress & Headless CMS Development • API Development & Third-Party Integrations • AI-Powered Features & Workflow Automation • E-commerce Development (Shopify, WooCommerce, Custom) • Performance Optimization & SEO Best Practices • Website Maintenance, Security & Scaling What You Can Expect • Clean, maintainable, and scalable code • Responsive websites optimized for every device • Fast loading speeds and SEO-friendly architecture • Clear communication and on-time delivery • Long-term support as your business grows Over the years, I've helped startups, agencies, and established businesses launch websites and web applications that improve customer experience, automate business processes, and support business growth. My background combines strong software engineering principles with a focus on creating products that not only look great but also perform reliably under real-world conditions. Whether you're starting from scratch, redesigning an existing website, or adding new functionality to an established platform, I can help you build a solution that is modern, scalable, and designed to achieve your business objectives. Let's discuss your project and how we can build a website that delivers measurable results.