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I help businesses automate data workflows and build reliable ETL pipelines using BigQuery, Python, and GCP — saving hours of manual work and improving reporting speed. If you're struggling with slow dashboards, manual data processes, or unreliable pipelines, I can design systems that are fast, scalable, and fully automated. ✔ ETL pipelines (PostgreSQL → BigQuery) ✔ Data automation & scraping ✔ Cloud Functions, Cloud Run, and scheduled workflows Recent Work: - Built ETL pipeline from PostgreSQL to BigQuery for automated reporting - Automated Gmail → Google Drive data workflows - Developed price tracking bots with real-time alerts - Designed cloud-based automation using Cloud Functions & Scheduler What I can help you with: - Automating manual workflows - Building scalable data pipelines - Optimizing BigQuery performance & cost - Creating reliable cloud-based systems Why work with me? - Clear communication - Clean, scalable, production-ready code - Fast and reliable delivery - Long-term support Feel free to message me to discuss your project. I'd be happy to suggest an approach.

I build e-commerce data warehouses on BigQuery that your whole team can actually query - clean dbt models, reliable pipelines, and reports that don't break when you add a channel. 10+ years in Data Engineering & Analytics. GCP and AWS certified. I recently built the full production data platform for Wuffes, an $80M US DTC pet supplement brand: - Unifying Shopify, Amazon, Meta, Google Ads, Klaviyo - GA4 into one source of truth. WHAT I BUILD: - BigQuery data warehouses in your own GCP project - DBT/Dataform data modeling: staging to marts, documented and well-named for self-service querying (including AI-assisted querying via MCP) - Scheduled ingestion from GA4, Google Search Console, Shopify, - Amazon SP-API and any third-party API : via custom Python connectors, - Airbyte or Fivetran - Evergreen dashboards in Looker Studio, Looker, Power BI and Tableau - Multi-channel attribution, cohort LTV, CAC vs LTV, contribution margin and retention analysis - Orchestration with Airflow / Cloud Composer, Docker and dbt scheduled runs, with documentation your team can maintain RECENT WORK - WUFFES ($80M DTC BRAND) - Designed and shipped their first production data platform - BigQuery + DBT warehouse feeding subscription LTV and retention analytics the whole company runs on Custom Airflow pipelines for - Amazon that are live in production today Client: "We would happily work with Vishal again." AI + MCP: I set up AI-assisted querying over warehouses using MCP, so your team can ask questions in plain language against clean, documented tables not just stare at dashboards. WHO I WORK BEST WITH - Multi-brand and single-brand e-commerce / DTC operations - Performance marketing teams with disconnected ad and SEO data - Founders building their first real data infrastructure - Teams that want to own and maintain the system after handoff HOW I WORK: I reply within a few hours and overlap several hours with US and EU business hours. You get a written scope up front, well-documented and well-named models, a working demo early rather than a big reveal at the end, and clean handoff docs. No jargon unless you want it. Many clients start with a paid 1-week audit of their current setup before a full build. If your marketing, SEO and sales data is fragmented or "good enough for now," send me a message and tell me what's broken.

🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 – 𝗔𝗺𝗼𝗻𝗴 𝘁𝗵𝗲 𝗧𝗼𝗽 𝟯% 𝗗𝗮𝘁𝗮 𝗘𝘅𝗽𝗲𝗿𝘁𝘀 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸. 🏆 Having successfully served 50+ clients on Upwork, I bring over 6 years of expertise in Data Analytics, Data Engineering & Web tracking. I build end-to-end data tracking & reporting pipelines for business of all sizes. What clients say about me: 📣 "𝙑𝙚𝙧𝙮 𝙧𝙚𝙨𝙥𝙤𝙣𝙨𝙞𝙫𝙚 𝙩𝙤 𝙦𝙪𝙚𝙨𝙩𝙞𝙤𝙣𝙨 𝙖𝙣𝙙 𝙥𝙧𝙤𝙫𝙞𝙙𝙚𝙨 𝙜𝙧𝙚𝙖𝙩 𝙙𝙖𝙩𝙖 𝙖𝙣𝙙 𝙫𝙞𝙨𝙪𝙖𝙡𝙞𝙨𝙖𝙩𝙞𝙤𝙣 𝙖𝙙𝙫𝙞𝙘𝙚. 𝘼𝙡𝙨𝙤 𝙖𝙗𝙡𝙚 𝙩𝙤 𝙝𝙖𝙣𝙙𝙡𝙚 𝙖𝙙𝙫𝙖𝙣𝙘𝙚𝙙 𝘽𝙞𝙜𝙌𝙪𝙚𝙧𝙮 𝙖𝙣𝙙 𝙇𝙤𝙤𝙠𝙚𝙧 𝙎𝙩𝙪𝙙𝙞𝙤 𝙬𝙤𝙧𝙠. 𝙀𝙭𝙘𝙚𝙡𝙡𝙚𝙣𝙩 𝙘𝙤𝙣𝙩𝙧𝙖𝙘𝙩𝙤𝙧!" MY SKILLS SNAPSHOT: 📈 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 & 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝗰𝗲 | Finding critical business insights & building KPIs from raw data stored in databases or spreadsheets. Also, building automated reporting dashboards using any available Business Intelligence tool in the market. 🌎 𝗪𝗲𝗯 𝘁𝗿𝗮𝗰𝗸𝗶𝗻𝗴 | Setting up browser-side and server-side tracking to ensure have precise information on what actions users take on your website. 🛠️ 𝗘𝗧𝗟 𝘂𝘀𝗶𝗻𝗴 𝗔𝗣𝗜𝘀 & 𝗱𝗮𝘁𝗮 𝘄𝗮𝗿𝗲𝗵𝗼𝘂𝘀𝗶𝗻𝗴 | Expertise in building Python data pipelines to extract raw data from APIs of data sources like but not limited to Meta Ads, LinkedIn Ads, Google Ads, Bing Ads, Mailchimp, Shopify, Stripe, Google Analytics 4, Google Search Console, Klaviyo, ClickUp, Monday, etc. 📲 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 | Analysing mobile app user’s behaviour and developing key mobile app metrics like DAU, MAU, ARPU, day-wise retention, Ads and IAP analyses, Aha moment analysis, etc. 🤖 𝗦𝗼𝗹𝘃𝗶𝗻𝗴 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗽𝗿𝗼𝗯𝗹𝗲𝗺𝘀 𝘂𝘀𝗶𝗻𝗴 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗢𝗽𝗲𝗻𝗔𝗜 | Building real-world business solutions using OpenAI and other large language models (LLMs). MY TECH EXPERTISE: • 𝗗𝗮𝘁𝗮 𝗩𝗶𝘀𝘂𝗮𝗹𝗶𝘀𝗮𝘁𝗶𝗼𝗻 & 𝗕𝗜 – Looker, Metabase, Zoho Analytics, Domo, Power BI, Tableau, Google Data Studio (formerly Looker Studio), Mode, Databox, Google Sheets, Excel, etc. • 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗹𝗮𝗻𝗴𝘂𝗮𝗴𝗲 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 – SQL and Python. • 𝗦𝗤𝗟 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 & 𝗱𝗮𝘁𝗮 𝘄𝗮𝗿𝗲𝗵𝗼𝘂𝘀𝗲𝘀 – Google BigQuery, AWS Redshift, AWS RDS, Snowflake, MySQL, MS SQL, PostgreSQL, Azure SQL, etc. • 𝗘𝗧𝗟 𝗧𝗼𝗼𝗹𝘀 – APIs, dbt, Dataform, Fivetran, Supermetrics, PowerMyAnalytics, Saras Analytics, Zapier, etc. • 𝗪𝗲𝗯 𝗧𝗿𝗮𝗰𝗸𝗶𝗻𝗴 – Google Tag Manager, Google Analytics 4, Mixpanel, etc. Feel free to drop a message if you need help with any of the services listed above and I'll be happy to collaborate! Looking forward to hear from you. Chitranshu Sharma

As a seasoned Retool Developer with over two years of hands-on experience, I specialize in creating dynamic and intuitive dashboards that transform data into actionable insights. My expertise spans across various aspects of data management and application development, making me a versatile and proficient Retool professional. Key Skills and Expertise: Retool Development: Over two years of dedicated experience in building robust and user-friendly dashboards, optimizing workflows, and enhancing business processes using Retool. Database Management: Proficient in NoSQL databases like MongoDB and SQL databases such as PostgreSQL, ensuring efficient data storage, retrieval, and manipulation. Data Analysis: Skilled in analyzing complex datasets, identifying trends, and providing data-driven insights to support strategic decision-making. API Integration: Adept at integrating various APIs to streamline data flow and enhance the functionality of Retool applications, enabling seamless interaction with external systems. Custom Solutions: Ability to design and implement customized solutions tailored to meet specific business needs, enhancing productivity and operational efficiency. Why Choose Me? Proven Track Record: With a strong background in Retool development, I have successfully delivered numerous projects that have significantly improved business performance for my clients. Technical Proficiency: My in-depth knowledge of both NoSQL and SQL databases, combined with advanced data analysis skills, ensures that I can handle diverse and complex data requirements. Detail-Oriented: I am committed to delivering high-quality work with meticulous attention to detail, ensuring that every project meets the highest standards. Client-Centric Approach: Understanding the unique needs of each client, I focus on providing personalized solutions that drive real results and add value to their operations. If you're looking for a dedicated Retool Developer who can bring your data to life and create impactful dashboards, let's connect and discuss how I can help you achieve your goals.

✅ Top Rated Data Engineer | AI Automation Specialist | Power BI Expert | BigQuery | ETL Pipelines | Python | BI Dashboards 📊 Helping businesses build scalable data systems, real-time dashboards, AI-powered automation, and business intelligence solutions that drive smarter decisions. With 10+ years of experience across Data Engineering, Full-Stack Development, Big Data and Machine Learning, I deliver end-to-end solutions from backend architecture and ETL pipelines to Power BI dashboards, AI chatbots and cloud deployment. I specialize in turning complex data into clear business outcomes. 🚀 What I Help Businesses Achieve: • Real-time reporting and decision-making • Automated workflows with AI and n8n • Scalable ETL / ELT pipelines • Power BI / Tableau / Looker dashboards • BigQuery data warehousing • AI Chatbots and LLM-powered assistants • Data cleaning, transformation and optimization • Backend APIs and cloud deployment • Performance optimization for enterprise systems 💻 Core Expertise: ✔ Data Engineering ✔ ETL / ELT Pipelines ✔ BigQuery ✔ Power BI ✔ Tableau ✔ Looker Studio ✔ SQL Optimization ✔ Python Automation ✔ AI Chatbots ✔ LLM Integration ✔ n8n Workflow Automation ✔ FastAPI / Node.js APIs ✔ AWS / GCP Cloud Infrastructure ✔ Dashboard Development ✔ Data Warehousing ✔ Predictive Analytics ✔ Machine Learning Models ⚙ Tools & Technologies: Python, SQL, BigQuery, Power BI, Tableau, Looker Studio, Apache Spark, Kafka, PostgreSQL, MySQL, MongoDB, AWS, GCP, FastAPI, Node.js, Docker, Kubernetes, TensorFlow, PyTorch, ChatGPT, Claude AI, Gemini, Perplexity, Vertex AI, SageMaker, n8n, OpenAI and more. 🏆 Results Delivered: • Built enterprise-grade ETL systems for large-scale reporting • Developed AI-powered chatbot solutions for business automation • Created real-time Power BI dashboards for sales and operations tracking • Improved data flow efficiency through cloud-native pipelines • Delivered analytics systems for eCommerce, construction, and SaaS platforms I focus on business impact not just technical delivery. If you are looking for a reliable Data Engineer and AI Specialist who can build systems that scale, let’s connect.

I design and build production-ready systems that scale. With over 22 years of software engineering experience —including 12 years in enterprise roles and 10+ years as a specialized freelance consultant —I help founders and companies build reliable SaaS platforms, complex backends, and high-performance web apps. How I Can Help You: I specialize in "0-to-1" product development and complex backend architecture. Whether you need to extend an existing API without breaking it or build a multi-tenant SaaS from scratch, I bring the "boring reliability" senior engineers are known for. Core Expertise: Backend Architecture: Expert in Node.js, TypeScript, and Nest.js. I design event-driven architectures using Cloud Functions and REST APIs that handle distributed workloads. Cloud & Serverless: Deep expertise in Google Cloud Platform (GCP) and Firebase. I have architected systems using App Engine, Cloud Run, BigQuery, and Firestore. Frontend Development: 10+ years building complex, data-heavy UIs with Angular and React/Next.js. Database Design: One of my strongest skills. I design efficient schemas (SQL & NoSQL) that prevent technical debt later. AI & LLM Integration: Experience building agentic workflows and chatbots using CrewAI, LangChain.js and Gemini/OpenAI APIs. Selected Projects: OpusWatch (Netherlands): Built the entire backend architecture (Node/Firebase) and Admin Dashboard (Angular) for a complex watch tracking platform. StrikePay (Ireland): Designed key backend functionality for payments and identity verification (ID-Pal integration). Numnu (Canada): Architected a food aggregator app using GCP, handling real-time data and analytics.