Previously, I was full-time research scholar (Gen AI) at Università Ca'​ Foscari di Venezia . Furthermore, I worked as a Machine Learning Engineer at AgriDunya Technologies . I served as a full-time Researcher (DL/ML) during my MS studies at Tianjin University , China. I had full-time experience working as a Software Programming Instructor at Directorate of IBA Community Colleges and Schools.I have extensive experience working as a freelancer (Upwork, PeoplePerHour;;.com, and Fiverr) to support my family and education at the undergraduate level.

🔥 CFA Charterholder | Lead Data Scientist | Data + Finance + Automation + Teaching + Writing Powerhouse 🔥 7+ years PRO experience + 7+ years academic mastery in Finance, BFSI, and cutting-edge Analytics. Master's in Big Data Analytics (GPA 8.8/10). Daily driver of Python, PySpark, SQL, Databricks, AWS, EMR + Airflow. Clients hire me because I deliver THREE superpowers in ONE: 💼 Finance expert who reads numbers like a book ⚙️ Data scientist who builds bulletproof pipelines 👨‍🏫 Tutor who explains rocket science like bedtime stories 🚀 DATA & ANALYTICS MASTERY Python (pandas, NumPy, scikit-learn, Flask APIs, automation) R Programming (stats, modeling, survey analysis) PySpark on Databricks/EMR + Airflow pipelines Web scraping (BeautifulSoup, Selenium, Scrapy) API integrations & production pipelines (OHLCV, backfills, daily updaters) Text classification/NLP + ML (classification, regression, ensembles) SPSS, SAS, MATLAB, Minitab, EViews, JASP + stats software Dashboards: Power BI, Tableau, Looker Studio (DAX, interactive reports) 💰 FINANCE & MODELING EXPERTISE Financial modeling (P&L, cashflow, balance sheets, franchise economics) CFA concepts (equity, fixed income, derivatives, portfolio mgmt) Risk/credit analytics, MIS, budget variance analysis Excel mastery (automation, complex models via Python) 🎓 TEACHING & RESEARCH SUPPORT CFA tutoring (Levels I-III) Data analytics (Python/R/SQL/stats) + visualization training Quant prep: CAT/GMAT/SAT/ACT Academic writing: survey analysis, results papers, technical reports AI/ML/DL paper editing (technical accuracy + clarity) 🛠 AUTOMATION & SPECIALIZED SKILLS Survivorship-bias-aware data pipelines Image annotation (Labelbox, CVAT) oversight LLM-assisted workflows (code/docs/Excel logic) ⭐ WHAT CLIENTS RAVE ABOUT ⭐ "Phenomenal talent… incredibly fast… will definitely work with Srishti again!" "Quick understanding + reactivity… thank you Srishti!" "High attention to detail + regular communication = high quality" "Exceptionally competent R programmer who exceeds expectations" "Hit ALL milestones on time with excellent work" Fast. Thorough. Reliable. Results-driven. Got a project where finance + data + clear communication = success? Let's talk! 📈✨

🔍,SEO-based research | 📊 Data Science | 🤖 Generative AI | 🧠 Machine Learning | 🐍 Python | 📈 R Programming | 📊 Analytics | 🧬 Bioinformatics I am a Data Scientist and AI Engineer with expertise in Machine Learning, Generative AI, data analytics, natural language processing (NLP), and bioinformatics. I help businesses, researchers, and startups transform data into actionable insights through predictive modelling, statistical analysis, AI-powered solutions, and custom Python and R applications. With over **75 successfully completed freelance projects* and experience training 32+ students in Data Science and Bioinformatics, I bring both technical expertise and strong communication skills to every engagement. My focus is on delivering accurate, reproducible, and business-oriented solutions that create measurable value. 🎯 Core Expertise 🔹 Data Science & Analytics • Data Cleaning & Preprocessing • Exploratory Data Analysis (EDA) • Feature Engineering • Statistical Modeling • Predictive Analytics • Data Mining • Network Analysis 🔹 Machine Learning & AI • Supervised & Unsupervised Learning • Classification & Regression • Support Vector Machines (SVM) • Principal Component Analysis (PCA) • K-Means Clustering • Deep Learning • Generative AI • Natural Language Processing (NLP) 🔹 Featured Projects • Stock Price Prediction using LSTM Networks • Breast Cancer Classification using PCA + SVM • Image Segmentation using K-Means Clustering • Machine Learning Model Development and Evaluation • Face Detection using Haar Cascade Features and OpenCV • Research Analytics and Data Visualization 🔹 Programming & Analytics • Python • R Programming • SQL • C++ • C# • MATLAB •Java 🔹 Data Science & Machine Learning Libraries • Scikit-Learn • TensorFlow • Keras • NumPy • Pandas • Matplotlib • Seaborn • Plotly • ggplot2 • dplyr • tidyr • DESeq2 🔹 Bioinformatics & Computational Biology • NGS & RNA-Seq Analysis in Python and R • Biopython • Cytoscape, STRING, DAVID, GSEA • AlphaFold, PyMOL, ChimeraX • Galaxy Server and Linux-based Pipelines • Molecular Docking (AutoDock and ML-Based) • Molecular Dynamic Simulation in GPU (GROMACS, AMBER, NAMD) Why Work With Me? ✅ 75+ Successfully Completed Projects ✅ 32+ Students Trained Worldwide ✅ Strong Research and Analytical Background ✅ Clear Communication and Documentation ✅ On-Time Delivery and Reliable Support Let's discuss how I can help with your data science, AI, machine learning, analytics, or bioinformatics project.

AI Engineer | Robotics & Intelligent Systems Specialist | Full-Stack Innovator I hold a B.Sc. in Artificial Intelligence (Robotics & Intelligent Systems major) with consistent placement on the Dean’s List (GPA 3.6/4.0). My expertise combines deep AI knowledge with practical implementation in robotics, intelligent systems, and scalable software. Core Competencies: • AI/ML: Machine Learning, Deep Learning, NLP, Reinforcement Learning, Computer Vision • Programming: Python, C/C++, SQL, Dart • Frameworks & Tools: TensorFlow, PyTorch, ROS/ROS2, LangChain, FastAPI, Docker, AWS, GCP • Specialization: AI system design, RAG chatbots, robotics automation, smart home systems Key Projects: • Graduation Project (B.E.M.O.) – Developed an intelligent desk assistant robot using Python, LangChain, Gemini LLM, OpenCV, and FastAPI. • Quadruped Robot “Doggy” – Implemented reinforcement learning for autonomous navigation and adaptation. • RAG-based AI Chatbots – Built multimodal and company-specific retrieval-augmented generation systems using PostgreSQL, Faiss, and LangChain. • ICPC/ACPC SysOps Team – Deployed NLP models on cloud infrastructure to optimize contest management and real-time data processing. Recognition: • National scholarship recipient in Generative AI (DEPI, MCIT). • AI Engineer Intern at eSpace, developing production-ready RAG chatbots. I excel at bridging research and production—delivering AI solutions that are innovative, efficient, and scalable.

Cybersecurity and SQA professional with 4+ years of hands-on experience helping businesses secure their systems, find vulnerabilities before attackers do, and ensure software works exactly as it should. I have worked with real clients across web, mobile, and network environments and currently lead a penetration testing team at Yumaj Technologies in Islamabad. If you need someone to test your web application for security flaws, audit your network, assess your mobile app, or run quality assurance on your software, I can help. I bring both the technical depth and the communication skills to make sure you actually understand what was found and what needs to be fixed. Here is what I work with on a daily basis: Tools and Technologies: Burp Suite, Metasploit, Nmap, Nessus, SQLMap, WFuzz Wireshark, Bettercap, BeEF, Splunk Python (LLM security scripting), React.js, Node.js Huawei Cloud, Microsoft Azure (AZ-500), Google Cloud OWASP ZAP, Selenium, Postman, JIRA (QA and security testing workflows) Certifications and Awards: Certified Ethical Hacker (CEH) CompTIA Cybersecurity Analyst (CySA+) Certified Cloud Security Professional (CCSP) Microsoft Azure Security Engineer Associate (AZ-500) IBM and Microsoft Cybersecurity Analyst Fortinet, Cisco and Google Cybersecurity Credentials ISTQB Usability Tester Certification Preparation ISTQB Technical Test Analyst Certification Preparation Infosec OWASP Top 10 (2021) 4x Dean's Honor at Capital University of Science and Technology (GPA: 3.78 to 3.90) I have also taught cybersecurity at the university level, mentored interns, and managed security teams, so I understand how to communicate findings clearly to both technical and non-technical stakeholders. I take every project seriously, deliver on time, and make sure my clients walk away with clear results and real value. If you are looking for a reliable, certified, and experienced cybersecurity and SQA professional, feel free to reach out and we can talk about what you need.

I am a highly adaptable and detail-oriented professional with experience in Virtual Assistance, eCommerce operations, Customer Support, Data Management, and IT-related tasks. I enjoy both fast-paced work and repetitive tasks that require consistency, accuracy, and efficiency. My goal is always to deliver high-quality results and reliable support to clients. With a strong background in Information Technology and Electronics, along with certifications in QuickBooks and bookkeeping, I bring a versatile skill set that helps businesses streamline operations and improve productivity. Core Skills & Expertise Virtual Assistance & Administrative Support Email and calendar management Data entry and web research Customer support and ticket handling Back-office support and website monitoring Social media management and light SaaS operations eCommerce & Digital Marketing Product listing and optimization Keyword research and cross-listing Shopify store management Building Shopify websites Building websites using WordPress Meta Ads product campaign management eBay, Etsy, Poshmark, and Vendoo operations Quality Control & Data Verification Data accuracy checking and validation Quality assurance and reporting Resolving customer concerns efficiently AI Annotation & Data Labeling Image and video annotation Bounding box creation Machine defect labeling for AI training datasets Technical Support & Creative Skills Technical troubleshooting and remote support Network operations and electronics background Photo editing and background removal Product image enhancement and Canva design Thumbnail creation and basic video editing Tools & Platforms Shopify, WordPress, Meta Ads Manager, PagePilot, Vendoo, eBay, Etsy, Poshmark, Zendesk, Slack, TeamViewer, AnyDesk, Remote Desktop, NordVPN, CVAT, Canva, Adobe Photoshop, GIMP, Sony Vegas, QuickBooks, Excel, Google Sheets, Google Docs, Google Calendar, Microsoft Office, Outlook, Aweber, Zik Analytics, PagerDuty, Zenoss, OCR Templating, Aisee, MyFinancialsOnline, Andromo, Appen, and more. I am committed to providing efficient, organized, and dependable support while continuously learning and improving my skills to meet client needs.

Machine Learning and Computer Vision Engineer specializing in YOLO object detection, custom model training, deep learning architectures, and NLP systems using Python, TensorFlow, PyTorch, and OpenCV. I help businesses build and deploy production-ready AI solutions including real-time object detection, image classification, OCR systems, AI automation, and end-to-end ML pipelines. My expertise includes: • Custom dataset preparation and model training • YOLO-based object detection and tracking • Deep learning model optimization • NLP applications and text processing systems • Computer vision solutions for real-world deployment I work with startups, researchers, and businesses to design, train, and deploy AI models for real-world applications. I focus on building scalable, accurate, and efficient AI systems ready for integration into web, mobile, or enterprise environments. If you need a reliable ML engineer to turn your AI idea into a working solution, let’s discuss your project.

Hi myself aman kumar, A graduate of IIT Kharagpur and Top rated at Upwork, I am a skilled Data Scientist and AI / ML / LLM / GenAI Engineer with multiple years of experience, I've successfully contributed to startups, building scalable software solutions. As a graduate of IIT Kharagpur, I bring a solid academic foundation to my practical skills. My background includes impactful projects in Natural Language Processing , Computer Vision and Time-Series Analysis, demonstrating a deep understanding of complex data domains. With a network of skilled engineers, our project is uniquely positioned for success, marked by innovation, reliability, and impactful outcomes. I am proficient in: ✅ Data Science , Machine Learning and Deep Learning: ● Classification and Regression tasks ● Unsupervised tasks (Clustering , Association ...) ✅ n8n & Intelligent Workflow Automation ● End-to-End Workflow Automation (CRM, Marketing, Support, Data ETL) ● Integration with AI Models, APIs, Webhooks & Databases ● Event-Driven Automation: Triggering AI tasks in response to data changes ● Custom Automations: Data prep, Alerts, Reporting, Scheduling, Slack/Email ● Orchestration of complex business logic using n8n nodes & JavaScript Tech Stack: n8n, JavaScript, REST/GraphQL APIs, Postgres, Airtable, Slack/Email/S3, Webhooks ✅ Time-series prediction ● Time Series Analysis (ARIMA, SARIMA, Prophet ...) ● Time Series Forecasting (Single Step , Multi-Step forecasting) ● Time Series Classification ● Hierarchical Time Series Forecasting ● Demand Forecasting using ML regression models (LightGBM, Random Forest, XGBoost ...) ✅ Natural Language Processing (NLP) and LLMs: ● Text classification (including Sentiment Analysis, Aspect-Based Sentiment Analysis) ● Named Entity Recognition (NER, automatic extraction of relevant entities, like names, locations, dates, etc) ● Chat-Bots (Deep Learning or Rule-Based chat-bots for various domains) ● LLM Fine-Tuning: Expertise in fine-tuning LLMs (large language models) like GPT-3, GPT-4, Llama, T5 etc for specific tasks and domains, leveraging transfer learning to improve model performance on niche datasets. ✅ Computer Vision (CV): ● Image Classification ● Object Detection (YoLo) ● Instance segmentation / Semantic Segmentation (Mask R-CNN) ● Optical Character Recognition (OCR) 🎓 Advanced proficiency in the following domains, ✦ Model Deployment ✦ Model Training ✦ Model Fine-tuning ✦ Knowledge Extraction ✦ Ad Hoc Structured Data Query ✦ AI Voice/Speech Agents ✦ RAG Enhancement ✦ Generative AI / Gen AI ✦ Prompt Engineering ✦ Long Term Memory and Continual Learning ✦ Performance Analysis ✦ LLM Evaluation ✅ Full-Stack Development: ● Backend (FastAPI, Flask, Django, django-rest-framework, Node.js, JavaScript, PHP, Yii Framework) ● Frontend (Vue.js, React.js) ● WordPress ● CI/CD (Docker, docker-compose, Kubernetes, k8s, Ansible, Terraform) ● Databases (PostgreSQL, MySql, MongoDB, OracleDB, ArangoDB, ClickHouse, GraphDB) ● AMQ (Celery, RabbitMQ) 💼 Some mainstream industries and business domains that I have worked with, ✦ CRMs ✦ Healthcare ✦ Operations ✦ Education, Edtech ✦ Legal (Regulation, Compliance) ✦ Real Estate ✦ Retail & E-commerce ✦ Travelling and Hospitality Frameworks: SpaCy, HuggingFace, Transformers, NLTK,LangChain, PyTorch, TensorFlow, Keras, DarkNet, Detectron, Detectron2, Fast.ai Annotation platforms: Doccano, ProdiGy, Clarifai, CVAT, Clarifai Architectures: BERT, LongFormer, GPT-3, RAG, GPT-4, GPT-4o Domains: MedTech, E-Commerce, HRM, AD-tech, Medical Imaging, CCTV (surveillance), NFT, LegalTech (document analysis) Technical skills: Python, Javascript, Go, Java, Spring Boot, Gradle, Node.js, react.js, react native, Android Studio, ios app developer, swift, Angular, Tensorflow, Keras, NumPy, Serverless Frameworks, Docker, Terraform, Ansible, Kubernetes, Jenkins, Spinnaker, GitOps, DataOps, AWS. GCP, Azure, JAMstack, GraphQL, MEAN Stack, React, Redux, ES6, Express, MongoDB, Redis, Linux, Etcd, Consul, Kinesis, Redshift, DynamoDB, Spark, Hadoop, Kafka, PostgreSQL, MySQL, ELK, Sass, Webpack, Gulp, Git, Ethereum, Solidity, OpenZeppelin, Truffle, Flask, Django, MCP , Teradata MCp, Flowise, n8n. Key Highlights: ⭐️ Available 7 days a week ⭐️ Fluent in English ⭐️ Fast response time ⭐️ Give updates daily ⭐️ Long-term project support ⭐️ Upwork Top Rated ⭐️ 100% Job Success Score Thanks for your consideration!

5,422 submissions. 98.7% approval rate. Zero pending tasks. That's not a pitch, that's a track record. I'm a Data Annotation Specialist with verified, hands-on experience across every major annotation category. Every number below is pulled directly from my platform dashboard no estimates, no rounding up . What I've delivered: ✅ Data Labeling & Bounding Boxes — 4,941 submitted | 4,890 approved | 99% approval ✅ Image Comparison — 234 tasks | 100% approval ✅ Video Annotation — 156 submitted | 100% approval ✅ Transcription — 50 submitted | 100% approval ✅ Text & AI Response Evaluation — Fluency scoring, factual accuracy, response rating ✅ Prompt Writing — Varied, instruction-aligned prompts for AI training datasets ✅ Audio Annotation — Timestamp marking, speaker identification, sound classification Why this matters to you: Most annotation projects don't fail because of bad tools they fail because of inconsistent contractors who need constant supervision, leave tasks half-done, or deliver work that gets rejected in bulk. That's not a risk you take with me. I follow instructions precisely, work independently, and don't stop until the batch is clean. My approval rate across thousands of real submissions isn't a claim it's documented. Advanced English fluency means my notes, justifications, and communication are always clear no back-and-forth over ambiguous labels. Immediately available. 10 hours daily. Ready for short sprints or long-term contracts. If your project needs someone who shows up, pays attention, and gets it right send a message. Let's get to work. 🛠️𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜 𝗢𝗳𝗳𝗲𝗿: ✦ Image & Video Segmentation (polygon, semantic, instance-based) ✦ Bounding Box, Keypoint & Landmark Annotation ✦ Text & Audio Annotation (multilingual available) ✦ Dataset Cleaning, Structuring & Preprocessing ✦ Consultancy on AI Dataset Design and Labeling Strategies ✦ AI Model Training and development I'm based in Lagos and can overlap with 𝗨𝗦, 𝗨𝗞, 𝗼𝗿 𝗘𝗨 𝗵𝗼𝘂𝗿𝘀 when projects need it. Open to one-off tasks, short sprints, or longer ongoing work. You can send a message to let's get started with your project image annotation, Bounding boxes, 3D boxes, Video annotation, instance and semantic, Object labeling/tagging, Segmentation, Polygons masks, Text annotation, Line annotation, Key Points annotation, Cuboids, Image classification and categorization, Image screenshot, Microsoft Excel, Data Modeling, Data Review, Data Annotation, QA Review, Quality Assurance

Hello! My name is Gojko Ostojic and welcome to my Upwork profile! I am a graduate graphic and web designer with 8 years of experience as a freelancer. - I have experience in: - Managing, verifying, and organizing data from diverse sources and formats - Reviewing and correcting AI-generated results for accuracy and consistency - Finding, collecting, and organizing information from various sources - Annotating photos or videos with bounding boxes, polygons, and points - Sort objects marked with bounding boxes by classes, types, and subtypes - Checking and modifying bounding boxes on completed tasks (QA) - Finding, hiring, and training people in order to increase the team - Monitoring the progress of people in the team, assisting if a problem is encountered during the work (Department Supervisor) - My key strengths: - Attention to detail and high accuracy in repetitive tasks - Fast learning and adaptation to new tools and workflows - Reliable handling of large amounts of information and datasets - Strong focus on precision, consistency, and meeting project guidelines - Ability to follow detailed instructions and deliver organized results on time