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Need a Senior AI & Full Stack Web & Mobile App Development Partner who can take your product from idea → MVP → scale → enterprise? You're in the right place. -------------------------------------------------------------------- I'm Jitendra Jain, a Principal Software Architect & Full Stack Engineer with 14+ years of experience building AI-powered SaaS platforms, Mobile Apps, Enterprise Software, Marketplaces, CRM, ERP, Healthcare Platforms, FinTech Products, Logistics Systems, and High-Traffic Web Applications for startups, funded companies, agencies, and Fortune-level businesses. I don't just write code—I architect products that are fast, scalable, secure, maintainable, and built for long-term business growth. Whether you're launching an MVP, rebuilding an existing application, integrating AI, or scaling to millions of users, I provide complete end-to-end product engineering using modern technologies and industry best practices. -------------------------------------------------------------------- Core Expertise AI Development OpenAI • GPT-4/5 • Claude • Gemini • LangChain • LangGraph • AI Agents • RAG • MCP • AI Chatbots • AI Automation • Prompt Engineering • n8n • Zapier Mobile Development Flutter • React Native • Swift • Kotlin • Cross-Platform Apps • Native iOS & Android • PWA Frontend React.js • Next.js • Vue.js • TypeScript • JavaScript • Tailwind CSS • Material UI • HTML5 • CSS3 • Responsive UI • Figma to Code • Webflow Backend Node.js • NestJS • Express.js • Python • FastAPI • Django • Laravel • REST API • GraphQL • Microservices • WebSockets • JWT • OAuth Cloud & Database AWS • GCP • Azure • Docker • Kubernetes • Firebase • Supabase • PostgreSQL • MongoDB • MySQL • Redis • CI/CD Integrations Stripe • Stripe Connect • PayPal • Razorpay • Apple Pay • Google Pay • Third-Party APIs • CRM & Workflow Automation -------------------------------------------------------------------- Solutions AI SaaS • Custom SaaS • Mobile Apps • Enterprise Software • CRM & ERP • Marketplaces • Healthcare • FinTech • Logistics • LMS • Food Delivery • Booking Systems • Real Estate • OTT • On-Demand Platforms • POS • HRMS -------------------------------------------------------------------- Services ✔ MVP Development ✔ Full Stack Development ✔ Mobile App Development ✔ AI Integration & AI Agents ✔ SaaS Development ✔ API Development & Integrations ✔ Cloud & DevOps ✔ Software Architecture ✔ UI/UX Planning ✔ Performance Optimization ✔ Application Scaling & Maintenance -------------------------------------------------------------------- Why Clients Choose Me ✅ 14+ Years of Experience ✅ 50+ Successfully Delivered Products ✅ AI + SaaS + Mobile + Enterprise Expert ✅ Startup to Enterprise Experience ✅ Clean Architecture ✅ Scalable Codebase ✅ High Performance Applications ✅ Secure Development Practices ✅ Transparent Communication ✅ Agile Development ✅ Dedicated Long-Term Partnership ✅ Business-Driven Engineering -------------------------------------------------------------------- Keywords AI Developer • Full Stack Developer • Flutter Developer • React Developer • React Native Developer • MERN Stack Developer • Node.js Developer • SaaS Developer • Mobile App Developer • Web Application Developer • MVP Developer • Startup Developer • Enterprise Software Developer • AI Automation • OpenAI Developer • ChatGPT Developer • Claude API • LangChain Developer • API Integration • CRM Developer • ERP Developer • Marketplace Developer • FinTech Developer • Healthcare Software • LMS Developer • DevOps Engineer • Cloud Architect • Software Architect -------------------------------------------------------------------- Let's Build a Product That Scales If you're looking for a developer who understands technology, architecture, product strategy, user experience, scalability, AI, automation, and business, you're in the right place. Let's transform your vision into a world-class product that users love and businesses rely on.

Struggling with outdated CRM contacts, poor quality leads, and low response rates? I specialize in building highly targeted Prospect Lists, Data Mining, Market Research, AI-Powered Lead Generation, Data Entry, Data Scraping, and List Building, all based on the backbone of data-driven B2B Lead Generation strategies. I cover all industries worldwide to assist your campaign more broadly and increase sales conversion. Every engagement utilizes comprehensive Data Extraction and verified Email List building, supported by detailed Company Research, to deliver accurate and high-quality contact lists and Sales Lead Lists that support business growth. 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 Info Research, supporting multiple verticals with precise, validated, and verified information. 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.

Hello, I'm Soumen, a Certified Expert in Google Analytics (GA4), Google Tag Manager (GTM), Enhanced Ads Conversion Tracking (Google, Bing, Meta), JavaScript, Cookie Consent v2, and Looker Studio. With over 5 years of experience in this field and nearly 1,000 successful projects, I specialize in advanced web analytics and tracking. Data accuracy and Tracking are the cornerstones of advanced data-driven marketing. I can track any custom events through GTM, set up GA4 properties, and create GA reports. As a result, I specialize in measuring traffic acquisition to empower data-driven decisions. I have completed many projects for my clients, and I will deliver the best results, drawing from my extensive experience and practice. 🤳 What I Offer: ✔ Setup GTM & GA4 implementation. ✔ Tracking and Setup any kind of custom event, user behaviour, and its dynamic parameters through GTM (Google Tag Manager). ✔ Setting up and auditing Google Analytics 4 properties, creating custom GA Dashboards, Reports, and custom Explorations. ✔ Setup Google Ads Enhanced Conversion Tracking, increasing enhanced scores, and Setup Consent Mode. ✔ Creating user-friendly, decision-making GA and SEO reports in Google Looker Studio(Google data Studio). ✔ Setup and fixing Facebook Pixel and Conversion API, increasing event match quality, and handling data deduplication. ✔ Troubleshooting any issues in GTM and Google Analytics (GA4) implementation. ✔ Setup Cookie Consent Mode v2 and cookie consent banner. ✔ Setup advanced Server-Side Tracking to prevent third-party browser cookie blocking, ad-blockers, and iOS 14+ update issues. ✔ Setup conversion tracking with any ads marketing channel like Google Ads, Meta, TikTok, LinkedIn, Pinterest, Bing, X(twitter) etc. ✔ Setup DataLayer implementation and triggering any custom event in GTM with my advanced JavaScript skills. ✔ Setup tracking for any kind of custom form or leads and capturing its field values through Google Tag Manager. ✔ Setup and tracking UTM parameters to identify the correct user source. ✔ Setup conversion funnel tracking and reporting for better optimization of user bounce rates. ✔ Maintaining and following GDPR and CCPA rules for setting up user consent. ✔ User attribution & UTM parameters tracking through hidden field. ✔ callrail account setup and tracking(calls and form). Platforms I Excel In: ✔ Google Tag Manager(GTM) ✔ Google Analytics(GA4) ✔ Google Looker Studio ✔ Google Ads Conversion ✔ Meta Event Manager ✔ Stape ✔ Hotjar ✔Google Cloud Platform ✔ WordPress / woo-commerce ✔ Shopify ✔ Wix ✔ BigCommerce ✔ kajabi ✔ Squarespace ✔ OneTrust ✔ cookieYes ✔ cookiebot ✔ calendly ✔ callrail ✔ elementor ✔ Go High Level(GHL) ✔ GoDaddy ✔ hubspot I am fully Experienced, Skilled and Certified in the above skills. Thanks, Regards, Soumen M.

I'm a Top-rated Virtual assistant with a 100% success rate for over ten years. I ensure the smooth running of my clients' ongoing projects with my work. I will assist in completing your project or tasks by equipping myself with the extra skills. I'm always ready for a challenge. If you need an enthusiastic and charismatic go-getter, let's talk. My turnaround time, work output, and communication are top-notch. You will enjoy working with me. 𝐀𝐫𝐞𝐚𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ✅ Admin duties & Data entries ✅ Accounting & bookkeeping ✅ Building SEO backlinks ✅ Content Writing and Publishing e-books ✅ Creating/ Designing brochures, cards, flyers, infographics ✅ Editing videos with motion graphics, animation ✅ Handling emails ✅ Creating & Managing websites, e-commerce stores, blogs, forums ✅ Moderating blogs, social pages, forums, discord, etc. ✅ Web Research Application Skills: ✅ AI Prompt Generating content, images, videos - ChatGpt, Ideogram, Playground ✅ Airtable, Figma, Framer, Memberstack, Notion, Softr ✅ Discord ✅ Blender, Canva ✅ Adobe After Effects, Adobe Premiere Pro, Camtasia, Descript, DaVinci Resolve ✅ Esty, Poshmark, Shopify ✅ PoD sites like Redbubble, Teepublic, etc. ✅ QuickBooks, Quicken ✅ Squarespace, Webflow, WordPress, Wix Availability: ✅ I'm currently available for 30+ hrs per week. ✅ I'll be available in the morning & evening timings during the PST/EST timezone. ✅ I've been doing yoga and exercises which keep me active during work. Guaranteed : ✅ Quality assurance ✅ Keen attention to details ✅ Completing the tasks before the deadlines ✅ Responding to your messages within 1-8 hours ✅ Constant interactions either through voice/text messages

🏆 Top Rated Plus | 200+ Projects Delivered | 18,000+ Hours | 12+ Years Experience I help startups, SaaS companies, and enterprise teams build scalable QA processes, reduce production defects, implement intelligent automation, and improve release confidence — without hiring a full-time QA leadership team. As a Fractional QA Lead & QA Consultant, I work beyond testing. I help companies establish QA strategy, automation frameworks, security validation, performance testing, and quality processes that scale. Whether you're launching a new product, scaling engineering teams, or struggling with production bugs, I help create reliable software delivery pipelines and stronger engineering confidence. What I Help Companies With: ✅ Build QA strategy from scratch ✅ Set up scalable Playwright / Cypress / Selenium automation frameworks ✅ Establish QA processes for startups & growing engineering teams ✅ Reduce release risk through structured testing practices ✅ Improve product quality, coverage & deployment confidence ✅ Lead manual + automation QA initiatives ✅ Audit existing QA workflows & recommend improvements ✅ Introduce AI-powered testing approaches ✅ Create CI/CD integrated testing pipelines ✅ Security & performance testing for business-critical applications QA Leadership & Consulting: ✔ QA Strategy & Roadmaps ✔ Fractional QA Leadership ✔ QA Process Audits ✔ Release Planning & Risk Assessment ✔ Test Planning & Governance ✔ Agile QA Practices ✔ Team Mentoring & Quality Culture Building Automation Expertise: ✔ Playwright (JavaScript/TypeScript) ✔ Cypress ✔ Selenium ✔ Cucumber ✔ SpecFlow ✔ End-to-End Automation ✔ API Automation ✔ Regression Automation ✔ Test Framework Architecture from Scratch Security Testing: ✔ OWASP Top 10 Validation ✔ Vulnerability Discovery ✔ Injection Testing ✔ Authentication & Authorization Checks ✔ API Security Testing ✔ Data Exposure Analysis Performance Testing: ✔ JMeter ✔ BlazeMeter ✔ LoadRunner ✔ Load Testing ✔ Stress Testing ✔ Baseline Testing ✔ Bottleneck Analysis Tech Stack: Languages: Java • Python • JavaScript • TypeScript • C# • PHP DevOps & CI/CD: Jenkins • GitHub Actions • GitLab CI/CD • Azure DevOps • AWS Automation & QA: Playwright • Cypress • Selenium • PyTest • TestNG • NUnit • Codeception Security & Performance: Burp Suite • OWASP ZAP • Postman • JMeter • BlazeMeter Project Management: Jira • ClickUp • Asana • Trello • Mantis Why Clients Hire Me: 🔹 Fractional QA Leadership — Get senior QA guidance without hiring a full-time QA Manager or Director 🔹 Automation Architecture Expertise — Build scalable automation systems instead of fragile scripts 🔹 Quality + Security Mindset — I test products from both user and attacker perspectives 🔹 Business-Focused QA — Reduce defects, improve release quality, and increase deployment confidence 🔹 Reliable Delivery Record — 190+ projects completed with long-term client partnerships Certifications & Highlights: 🏆 Top Rated Plus Freelancer 🏆 ISTQB Certified QA Professional 🏆 190+ Projects Delivered 🏆 18,000+ Hours Logged 🏆 Long-Term Startup & Enterprise Partnerships Ideal Engagements: ✔ Fractional QA Lead Roles ✔ QA Consulting & Audits ✔ AI Test Automation Projects ✔ Playwright Framework Development ✔ Security Testing Engagements ✔ Performance Testing Projects ✔ Startup QA Setup ✔ Enterprise QA Transformation ✔ Long-Term Strategic QA Partnerships If your product quality is slowing releases, causing production bugs, or your team needs stronger automation and QA leadership — let’s discuss how I can help. Available for consulting, long-term partnerships, and fractional QA leadership engagements.

Hello, I'm Sai Aparna, 𝐅𝐮𝐥𝐥-𝐭𝐢𝐦𝐞 𝐚𝐧𝐝 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐟𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤. I specialize in Lead Generation, Contact Email List, List Building, Data Entry, Web Research and CRM Data Enrichment Services. 𝗠𝘆 𝗙𝗶𝗲𝗹𝗱𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗮𝗿𝗲👇 ✔️Lead Generation ✔️Web Research ✔️LinkedIn ✔️B2B Contact List ✔️B2B Email Generation ✔️Contact List Management ✔️Email List Building ✔️Email Finding ✔️Database Building ✔️Email Sourcing ✔️Data Collection ✔️Admin Support ✔️Valid and Verified Emails ✔️Contact & Email List Building ✔️CRM Contacts Cleaned up & Update ✔️E-commerce Skills That Drive Success ✔️Real Estate Research ✔️Data Extraction ✔️Email Handling ✔️Data Cleaning ✔️Data Entry ✔️Virtual Assistance ✔️B2B Marketing ✔️Database Building in CRM ( Salesforce, HubSpot, Pipedrive, Notion ) I used some 𝐏𝐫𝐞𝐦𝐮𝐢𝐦 𝐭𝐨𝐨𝐥𝐬 to find contacts, email addresses, and Direct Cell Numbers as well. My primary goal is to exceed clients' expectations by delivering error-free Work on schedule. I have extensive Upwork experience. I can help you achieve your business goals quickly and efficiently. Contact me today to get started! Just send me a message and I will be back to you within 5 Minutes! Thanks for your valuable time. Best regards, Sai.