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I am a Data Steward, Web Research Specialist, and AI Data Annotation Professional with experience supporting international clients across healthcare, life sciences, insurance, and multilingual research projects. Most recently, I worked as a Data Steward Contractor for Veeva Systems Inc., where I conducted Germany-focused healthcare and life sciences research, profile enrichment, source verification, data validation, and quality review activities. I am also a Veeva Network Certified Data Steward. My professional background includes German Language related roles: insurance operations, claims analysis, customer support, structured data management, web research, content evaluation, and quality assurance. Over the years, I have worked with organizations including Veeva Systems, AXA GO Business Operations, Concentrix Daksh, Teleperformance, and international clients through Upwork. On Upwork, I have successfully completed multiple research, product listing, data entry, and administrative support projects. Clients value my attention to detail, reliability, analytical thinking, and ability to follow complex guidelines while maintaining high-quality deliverables. Core Expertise • AI Data Annotation & Data Labeling • Data Stewardship & Data Validation • Web Research & Internet Research • German Language Research • Healthcare & Life Sciences Research • Data Enrichment & Profile Verification • Quality Assurance & Content Review • Insurance Operations & Claims Analysis • Product Research & Product Listings • Excel, Google Sheets & Structured Reporting • Administrative Support & Documentation Languages • German – Professional Working Proficiency (Goethe Zertifikat B2 - coursework completed at Goethe-Institut Pune) • English – Professional Proficiency • Hindi – Native I am comfortable working with large datasets, research-intensive projects, multilingual workflows, and quality-driven environments. Whether you need AI annotation, data validation, web research, German-language support, healthcare research, or administrative assistance, I can deliver accurate, structured, and reliable results.

🏆 Top Rated CSR, Vendor Manager, Application Tester, Etc, Etc ✔ 8+ Years of Professional Experience ✔ 268+ Successful Project Completed (265 Application Testing Projects + 3 Upwork) ✔ 3 Times Awarded for Best performance in different companies 🏆 Over my career, with experience across multiple industries—including Financial services, IT services and IT consulting, Hospitals and Healthcare, Outsourcing and Offshoring Consulting, Telecommunication, E- commerce & Real Estate.—I’ve collaborated with professionals from diverse cultures, beliefs, and backgrounds, which has sharpened and broadened my understanding of stakeholders’ needs and expectations in a professional setting. 👨‍🏫 𝗥𝗲𝗮𝘀𝗼𝗻𝘀 𝘁𝗼 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲: ✔️ 𝟯𝟬 𝗗𝗮𝘆𝘀 𝗼𝗳 𝗙𝗿𝗲𝗲 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 If you are not satisfied with the quality of work. ✔️ 𝗪𝗲𝗲𝗸𝗹𝘆/𝗗𝗮𝗶𝗹𝘆 𝗣𝗿𝗼𝗴𝗿𝗲𝘀𝘀 𝗠𝗲𝗲𝘁𝗶𝗻𝗴𝘀 Stay in the loop with regular updates. ✔️ 𝗙𝗿𝗲𝗲 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝗳𝗼𝗿 𝗙𝘂𝘁𝘂𝗿𝗲 𝗦𝘁𝗲𝗽𝘀: If you need to know anything within my expertise, I am open to speak. ✔️ My client says;"Would like to hire him again...excellent work! He met all deadlines & his skills were reasonably strong."🚀

I am a German highly experienced and seasoned clinical and forensic psychologist from University of Bonn, Germany (M.Sc.). Currently living in India. I offer the following services for companies: - Psychometric testing (incl. standardized questionnaires, interviews, and compiling of reports; pre employment or career development) - Consulting on psychological matters - Conducting or designing trainings and workshops on various psychological topics (e.g. stress management, resilience, common mental health issues, psychological first aid) - Consulting on forensic- psychological topics - Conducting interviews to investigate the credibility (psychology of testimony). I have gained my knowledge and experience through my studies and years of working as a psychologist in various fields (clinic for addiction and trauma therapy, private practice for behavioral therapy, occupational ability assessment center, cold case project (reviewing unsolved crimes/ ICCAP), psychologist in maritime industry).

Struggling with bad CRM data and low reply rates? We combine AI prospecting tools with manual data mining to deliver 98%+ accurate, custom B2B lead lists. Turn your ideal customers into verified prospects. Marvel Technologies is a data services agency specialized in Prospect List Building, Lead Generation, Data Mining, Market Research, AI-Powered Lead Generation, Data Entry, Data Scraping, Company Research, Data Enrichment, List Building, and verified Email List Building. We work with businesses across all industries worldwide to build custom prospect lists based on your target industry, job title, company size, and location. Key Services: Lead Generation List Building Prospect List Contact List Email List Sales Lead List CRM Cleanup Data Mining Data Cleaning Data Enrichment Data Collection Data Processing Market Research Online Research Company Research Lead Research Data Entry Web Scraping LinkedIn Sales Navigator LinkedIn Lead Generation Administrative Support Key Deliverables - Generated over 9.5 Million+ B2B Contacts and Emails through advanced Data Collection, AI-Assisted Data Enrichment, List Building, Data Processing, and Data Cleaning for quality and accuracy. - Built, segmented, and maintained 12.5 Million+ business contacts and Prospect Lists with robust Research Methods and Contact Research with precise, validated, and verified information, at a sustained 98%+ deliverability rate verified through Zerobounce. Our Comprehensive Services - Lead Generation and B2B Lead Generation: Strategic development of highly segmented Prospect Lists, Data Extraction, and Sales Lead Lists for B2B Marketing, Sales, and Outbound Sales growth. - Email Marketing and Email List: Achieving superior Email Communication and campaign success with high-accuracy verified Contact Lists, verified by Zerobounce, and following best practices in Email Marketing and Email List Verification. - Data Cleaning and Data Processing: Maintaining up-to-date, accurate data pipelines with rigorous Data Validation, Data Cleanup, and regular Data Enrichment to ensure every Contact List and Email List is updated. - Data Mining and Market Research: Leveraging Online Research, Company Research, Competitive Analysis, and insight-driven B2B Marketing to produce actionable Sales strategies. - Lead Nurturing and Lead Scoring: Support for Sales, B2B Sales, and Marketing with compelling Lead Nurturing solutions and Lead Generation Strategy to maximize lead conversion. - Administrative Support: Driving team efficiency and supporting business scaling with reliable Administrative Support and Virtual Assistance. - Data Entry and Data Scraping: Thorough manual and automated Web Scraping to populate Contact Lists, Data Enrichment projects, and CRM Software resources. Industry-Specific Contact Lists Benefit from custom, quality-verified lists for: - CxOs, Startup Founders, E-Commerce Executives, Educators, Healthcare Leaders, Manufacturing Professionals, IT & Tech Specialists, Real Estate Contacts, Event Organizers, General Contractors, Plumbers, HVAC, and more - Data and lists are segmented by job title, function, company size, sector, geography, and more, optimizing your outreach for B2B Sales, Marketing Strategy, and Research initiatives. - All work incorporates LinkedIn Lead Generation and LinkedIn Sales Navigator for superior targeting, accuracy, and lead quality. Why Choose Us? - 15+ years in B2B Lead Generation, Data Entry, Data Enrichment, and List Building or List Builder with a history of delivering validated, accurate, and quality-driven contact databases. - A skilled team of more than 20 professionals in Online Research, Market Research, Data Scraping, and Administrative Support, trusted by businesses for reliable Prospect Research and Prospect List development. - Commitment to On-Time Delivery, verified data accuracy, and superior quality through regular Data Cleaning, verified List Building, and high-standard process adherence - Comprehensive Lead Generation Strategies supported by CRM and B2B Marketing, ensuring every database is ready for Sales and Marketing use - Advanced Web Crawling, Web Research, Internet Research, Email List Generation, and Virtual Assistance for continuous support to Sales and Marketing pipelines Trust us for your Lead Generation, List Building, Data Enrichment, Data Entry, Data Scraping, Market Research, Outbound Prospecting, Target Account List, AI-based Ideal Customer Profile (ICP) and Total Addressable Market (TAM) Research, Niche Contact Research, CRM Deduplication, HubSpot Data Management, Contact Segmentation, Sales Operations and Revenue Operations Support, Go-to-Market Support, GTM Research, Campaign List Preparation, Contact Discovery, B2B Contact Sourcing, Email Sourcing, Lead Qualification, MQL Support, SQL Support, Local Business Database, Data Deduplication, List Segmentation, Prospect Validation, Contact Verification, and all effective outreach and accuracy with your marketing goals.

Availability: Full-time freelancer, 𝟰𝟬+ hours/week, open to long-term collaborations. I’m a Full-Stack & AI Engineer with 10+ years of experience building web and mobile applications and 3+ years of specialized experience in AI and Large Language Models (LLMs). I design, develop, and deploy production-grade platforms, from scalable SaaS dashboards to AI-powered assistants, RAG systems, and voice agents. I work end-to-end: architecture → backend → frontend → cloud deployment, with a focus on clean code, maintainable systems, and high performance. Over the past few years, I’ve delivered solutions that integrate AI/LLM pipelines, vector search, real-time chat, and voice agents for enterprise and startup clients. 🤖 AI & LLM Expertise - MCP Server Development: Designing and integrating custom MCP servers for AI agents, enabling structured tool usage, external system integrations, database querying, and API orchestration. - Fine-Tuning: Persona creation, Q&A systems, and domain-specific models (medical, legal) using Mistral and Llama 3. - Synthetic Dataset Generation: Streamlining LLM training with high-quality datasets. - Evaluation Frameworks: Assessing LLM performance with custom metrics. - Cloud Deployment: Deploying LLMs on AWS and GCP. - AI Agents & Voice Bots: Proficient with LiveKit, Retail AI, OpenAI. - Open-Source Deployment: Expertise deploying models like vLLM on AWS/GCP/RunPod using SkyPilot. 🛠️ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗧𝗼𝗼𝗹𝘀 & 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 ➜ LLM Tools: LangChain, Langsmith, Langfuse , Hugging Face, Transformers. ➜ Vector Databases: Chroma, FAISS, Pinecone, Qdrant , Opensearch ➜ AI Workflows: Flowise AI, LangFlow, StackAI. 🛠️ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ➜ Languages & Frameworks: Python, Node.js, ReactJS. ➜ Database Management: MongoDB, MySQL, PostgreSQL , Supabase , FIrebase ➜ Frontend & Backend Integration: Seamlessly connecting APIs and user interfaces. 🌟 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗦𝗸𝗶𝗹𝗹𝘀 ➜ Open-Source LLMs: Proficiency in LLAMA 3, Mistral 7B, and Mixtral 8x7B. ➜ Prompt Engineering: Expertise in techniques like Chain of Thought, Few-shot Prompting, and Self-Reflection. ➜ Fast Inference: Implementing high-speed solutions with vLLM . 🌟 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲? With over 10 years of experience, I deliver scalable, cutting-edge solutions tailored to your project’s needs. Whether it's advanced AI models, MCP server development, LLM optimization, or full-stack development, I ensure top-notch results every time. Let’s collaborate to bring your ideas to life!

Hi, I'm Vivek, an E-commerce Operations & Data Management Specialist with 6+ years of experience and 180+ successful Upwork projects. I help businesses manage Data Entry, Shopify Product Listings, Lead Generation, Web Research, Excel, Google Sheets, and Ecommerce Operations with accuracy and efficiency. My goal is to save you time, reduce errors, and keep your business running smoothly so you can focus on growth. 🎯 How I Can Help You Ecommerce Product Listings I create accurate product listings for Shopify, Amazon, eBay, WooCommerce, Etsy, and Magento. My goal is to reduce listing errors, speed up publishing, and keep your store organized. Order Processing Keep orders moving smoothly and avoid delays that frustrate customers and slow operations. I support structured workflows, inventory updates, and tracking coordination for fast-paced e-commerce stores. Excel and Google Sheets Data Management Turn messy spreadsheets into organized, usable data that supports better decisions and smoother operations. I work with large datasets, formatting, cleaning, validation, and spreadsheet organization for accurate day-to-day business use. PDF to Excel Conversion Save time by converting PDFs into clean, editable spreadsheets with accurate data structure. I handle manual formatting and data extraction to reduce errors in reports, lists, and business records. Web Research and Data Entry Build accurate business lists, product data, and contact information that help you move projects forward faster. I have completed 100+ freelance projects involving research, data collection, and back-office support with attention to detail and deadline-driven delivery. 🏆 What Clients Say "Highly skilled, responsive, and completed the task perfectly with no need for revisions." "Vivek has always done a superb job for all of the contracts we have given him. I highly recommend him, and we will be using him again." These reviews reflect the consistent quality, accuracy, and reliability I bring to every project. 🎖 Fundamentals of Digital Marketing 🎖 Diploma in Office Management See full case studies in my portfolio below. ✉️ Message Me on Upwork Need reliable support for e-commerce operations, data entry, product uploads, or Excel and Google Sheets work? Message me on Upwork today, and let’s discuss the exact support you need. I typically respond within 4 hours and can handle urgent projects when needed. How I Work I keep product data accurate in Shopify and WooCommerce, process orders in Amazon Seller Central, and organize listings in Excel and Google Sheets. I clean PDFs into usable spreadsheets, validate data before delivery, and manage files in Google Drive while keeping communication clear and deadlines on track. I manage Shopify product listings, Amazon product listings, order processing, and data entry using Microsoft Office (Excel) and Google Sheets, keeping e-commerce operations accurate and organized.