Software Engineer and Data Enthusiast with a strong background in Python, Java, SQL, and Cloud Technologies like AWS and Snowflake. With professional experience at Cognizant, I have developed modular, reusable code and data engineering solutions that drive efficiency and reduce manual tasks. I excel in crafting data-driven insights, building dynamic applications, and integrating cutting-edge technologies to solve complex problems. As a fast learner and collaborative team player, I am passionate about delivering high-quality work that meets client needs and exceeds expectations. Let’s connect and bring your project to life! Feel free to contact me at santanud5d80@gmail.com or 7980721339. Looking forward to working with you! Santanu Adhikary

Have Worked as a Team Lead in a well Reputed Software Development Company. Working Experience is over 9 Years in C#.Net VB.Net Asp.Net ETL, SSIS Packages SQL Server, SQL Compact, Sqlite, MySQL Crystal Reports Web Services / Web APIs I have Excellent skills to communicate with the client to understand client's requirements.

You hire me when you need a Claude agent or LLM pipeline that survives production, not a demo that breaks on the second input. I build the AI layer and the infrastructure around it, end to end in Python, and you work with me directly, not a rotating agency team. Recent builds: - A 7-skill, 18-state Claude Code offboarding engine: 4 sub-agents, hook-enforced guardrails, and a JSONL event log as the single source of truth so every run is auditable. - Commission reconciliation across 7 insurance providers, each with its own format, delivered as reusable Claude skills the client now runs himself. - A cross-marketplace product matcher at 99.2% precision, with an "abstain rather than mismatch" rule so it stops instead of guessing wrong. - A 22-gate Python QA pipeline plus a two-pass LLM-judge review fleet for a fine-tuning dataset. - A GEO upgrade for a news publisher, built with Claude Code and automated schema verification. - A multi-source data pipeline delivered solo through an agentic Claude Code workflow: 3 databases → one audited, queryable product, solo. When a no-code tool hits its ceiling (branching logic, state, real error handling), that's where I take over. I rebuild the workflow in code so it does what you actually meant, keeping the parts that worked. I work best on projects where: - The input and output are clear, even if the data in between is messy - There is real API integration, data wrangling, or an AI/LLM workflow involved - You need something built, tested and handed over, not just advised on Why Claude-native matters: it's the model family I design around full time, so I know its failure modes and build around them instead of being surprised by them. If your project needs a different model for one step, I will tell you and wire it in. The goal is a system that holds up, not loyalty to a logo. Stack: Claude Opus/Fable, GPT-5.6, Python, Node.js, OpenRouter, Tesseract, faster-whisper, Playwright, Pandas, SQL.

Dear returning and new clients, I wish you all a warm welcome. You are just a message, away to boost your business with: ✔︎BACKEND web development problem and issue solving, ✔︎ DATABASE querying and administration, ✔︎ GUARANTEED A+ code quality following industry standards, ✔︎ FAST and RELIABLE delivery and communication on AGREED tasks, ✔︎ A RELIABLE and TRUSTWORTHY project manager who meets the client's reasonable deadlines. I am absolutely thrilled to help and guide you in IT technical sphere the best way I know (if you have time, you can also check short intro YouTube video here on my upWork profile, Thank you). I am FULL TIME freelancer with the set of skills, outlined by my clients: ✔︎ PERFECT FEEDBACK SCORE (5.0) on ALL contracts AND 100% JOB SUCCESS - for more than a decade on upWork | Elance | oDesk, ✔︎ upWork's TOP RATED FREELANCER BADGE since the start of their program, ✔︎ POSITIVE attitude in RESOLVING conflicts and HANDLING glitches, ✔︎ LIGHTNING fast replies and communication. DEVELOPMENT rules: - I write CLEAN and TESTABLE code, - write TESTS, so I am certain it does NOT break anything (if this is clearly communicated with client, I definitely encourage it highly), - CODE must be ready to DEPLOY at ANY TIME (CURRENT version must be in a WORKING state), - ALWAYS use GIT and BRANCHING, - SEPARATE ENVIRONMENTS for production, staging and local development, - use and TRACK PROGRESS through Jira, Trello, Asana and etc. - CLEAR AND CLEAN COMMUNICATION is an absolute MUST so the DEADLINES are met. For more please be sure to check feedback's, here on my profile page. Thank you in advance for dedicating your valuable time to me. --- BackEnd Web development: - PHP and frameworks - Laravel, Codeigniter, CakePHP FrontEnd Web development: Jquery and Frameworks, CSS3, HTML5, Bootstrap, Vue, React Databases (development and administration): MySQL, MariaDB, MsSQL, PgSQL Amazon Web Services (AWS) Suite - EC2, S3, RDBMS, SQS, Version control: - GIT - Bitbucket, GitHub, GitLab - SVN - Tortoise SVN Linux - Ubuntu, CentOS7, Suse, Puppy - Bash Scripts - Docker -

As your business grows, your reporting should become smarter, 𝗻𝗼𝘁 𝗺𝗼𝗿𝗲 𝗺𝗮𝗻𝘂𝗮𝗹. I help businesses connect their data, build executive dashboards, automate reporting, improve forecasting, and integrate AI into their existing data stack, so your team spends 𝗹𝗲𝘀𝘀 𝘁𝗶𝗺𝗲 preparing reports and more time making decisions. Over the past 5 years, I've helped businesses across real estate, retail, finance, marketing, and e-commerce replace disconnected spreadsheets with scalable analytics systems using Python, SQL, Power BI, Looker Studio, Excel, and Google Sheets. 𝐑𝐞𝐜𝐞𝐧𝐭 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 ⭐Real Estate: Automated rent roll reporting, reducing weekly reporting from hours to minutes while improving visibility into lease expiration risks. ⭐E-commerce: Automated hundreds of vendor data feeds with Python, improving data accuracy from 85% to 97% and saving 20+ hours per week. ⭐Retail: Built executive dashboards for a 7-location retail business, giving leadership real-time visibility into P&L, EBITDA, labor costs, and store performance. ⭐Finance: Built financial reporting and forecasting systems that improved budgeting, cash flow visibility, and executive decision-making. ⭐ Marketing: Automated multi-platform reporting to give teams real-time visibility into marketing spend, ROI, and campaign performance. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝟏. 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 Build scalable analytics infrastructure that connects your data, automates reporting, and supports reliable business decisions. 𝟐. 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 & 𝐄𝐱𝐞𝐜𝐮𝐭𝐢𝐯𝐞 𝐑𝐞𝐩𝐨𝐫𝐭𝐢𝐧𝐠 Executive dashboards, KPI reporting, and business performance analytics built for leadership teams. 𝟑. 𝐅𝐨𝐫𝐞𝐜𝐚𝐬𝐭𝐢𝐧𝐠 & 𝐃𝐞𝐜𝐢𝐬𝐢𝐨𝐧 𝐒𝐮𝐩𝐩𝐨𝐫𝐭 Financial forecasting, budgeting, scenario modeling, variance analysis, and performance monitoring to help you plan with confidence. 𝟒. 𝐀𝐈-𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 Integrate OpenAI, Claude, Gemini, and other LLMs into spreadsheets, databases, and reporting workflows to automate analysis, generate business insights, improve data quality, and make information easier to access. ⭐ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐛𝐲 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐚𝐜𝐫𝐨𝐬𝐬 𝐭𝐡𝐞 𝐔𝐒, 𝐄𝐮𝐫𝐨𝐩𝐞 & 𝐀𝐮𝐬𝐭𝐫𝐚𝐥𝐢𝐚 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐆𝐞𝐭 ✔ Connected data instead of disconnected spreadsheets. ✔ Executive dashboards built around business decisions. ✔ Automated reporting that saves time and reduces manual work. ✔ Analytics systems designed to scale as your business grows. ✔ Practical communication, clear recommendations, and solutions focused on measurable business outcomes. Whether you're building analytics infrastructure from scratch, modernizing executive reporting, improving forecasting, or integrating AI into your existing data stack, I'll help you build a solution that's practical, scalable, and designed around how your business operates. 𝐈'𝐦 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐟𝐨𝐫 𝐟𝐢𝐱𝐞𝐝-𝐩𝐫𝐢𝐜𝐞 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬, 𝐨𝐧𝐠𝐨𝐢𝐧𝐠 𝐚𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 𝐬𝐮𝐩𝐩𝐨𝐫𝐭, 𝐦𝐚𝐧𝐚𝐠𝐞𝐝 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬, 𝐚𝐧𝐝 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐩𝐚𝐫𝐭𝐧𝐞𝐫𝐬𝐡𝐢𝐩𝐬. Send me a 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐨𝐫 𝐢𝐧𝐯𝐢𝐭𝐞 𝐦𝐞 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐣𝐨𝐛. I'll review your current reporting process, identify the biggest bottlenecks, and recommend the simplest solution.

I am a professional Desktop and Flutter Mobile Applications Developer with over five years of experience in software engineering. I specialize in building high-performance desktop applications using C, C++, and C# with SQL databases, as well as developing mobile applications with Flutter and Dart, integrating Firebase and Supabase for real-time functionality. Throughout my career, I have successfully delivered numerous projects for desktop-based clients, optimizing performance, scalability, and user experience. My expertise extends to web automation, testing, and AI-based tools, ensuring robust and efficient solutions. With a strong problem-solving mindset and a passion for innovation, I am committed to delivering high-quality software tailored to client needs.

SQL Server Database Administrator with 8+ years of experience designing, administering, and optimizing mission-critical database platforms. Deep expertise in Microsoft SQL Server with strong command of enterprise RDBMS architecture, performance tuning, and high-availability/disaster-recovery solutions. Proven experience leading SQL Server installations, upgrades, security hardening, and operational best practices, including clustering, log shipping, SSL implementation, Transparent Data Encryption (TDE), and column-level encryption. Highly skilled in backup and recovery strategy, access control, and compliance-driven data protection. Adept at cross-platform database administration, including configuring and troubleshooting MySQL environments, and developing complex database objects such as stored procedures, functions, and triggers. Trusted partner to application teams and stakeholders, ensuring database reliability, scalability, and security.

Power BI Specialist | Excel Automation | SQL & R/Python Analytics | Data Visualization Expert Transforming raw data into powerful insights with Power BI dashboards, DAX, and Power Query. I design intuitive, interactive reports that drive smarter decisions and business growth. Beyond Power BI, I bring advanced skills in Excel automation (VBA & formulas), SQL database design (MySQL, Access), and statistical analysis (R, Python, SPSS, Minitab, ggplot)—ensuring end-to-end data solutions from storage to visualization. Passionate about crafting data-driven stories, I help organizations uncover trends, solve challenges, and act with confidence. I can do your work more accurately and effectively, because I am a graduate in BA. Statistics in Sabaragamuwa university of Sri Lanka. Introduction to statistics • Data Analysis & Visualization with Power BI (interactive dashboards, Power Query, DAX, automation) • Analysis using EXCEL, SPSS, Eviews, MINITAB, Power Bi, R Programing, Python & R Studio, Access, MySQL • Descriptive statistics (mean, median, mode, variance, standard deviation) • Graphs including (Bar chart, Pie chart, Histogram, Scatter diagram) Also I do Analytics/ Dynamic / interactive dashboard Excel, R , Python and Power Bi Programming using python and R - Regression( linear \ logistics, ponominal), Machine learning, Deep learning, Supervise learning & unsupervised learning like as Decision tree, random forest, clustering, classification, svm and Time series analysis. • Hypothesis testing • T-test (one & two sample t-test) • Chi-square test, Goodness of fit test of independent • Confidence interval estimation • Probability, correlation and regression analysis • Unit Root test • Stationery Test • Design of experiments (ANOVA & factorial design) • Non parametric test • Excel and power bi Dashboard • Apply formulas/Advance Filter • Spreadsheet Excel data entry and formatting • Conditioning Formatting • Removing duplicates in MS Excel • All other statistics mathematics & data analysis So why are you waiting for? Feel free to contact me in anytime.... Thank you....

🛠️ Power BI, M Language, DAX, Tabular Editor, DAX Studio, API Connections, SQL (DML), Sharepoint, Excel, PowerPoint, Power Automate, IA, Claude, SaaS, N8N,Word, Google sheet, Quickbooks, BigQuery,Looker Studio, IA Prompts, Pyhton, APPs ►►►Who Am I?◄◄◄ Hi, nice to meet you! I'm Marcos, a Business Intelligence Analyst with over 9 years of experience developing dashboards and reports using well-known tools such as Power BI and Looker Studio. Also, an AI specialist developing APPs, Saas and automations. In addition to advanced knowledge in AI with Prompt engineering. Developing SaaS and N8N systems.. Passionate for data I love to analyze data and generate insights. I am becoming a Forward Deployed Engineer! Delivering the best develop solution and making friends on the journey! ►►►What do I do? (Services)◄◄◄ ✔️ Power BI Reports Development & Maintenance - Pull data from (APIs, SQL Servers, Excel Files, etc.) - Clean and transform data (Power Query on Dataflows or Datasets) - Model relationships - Calculate and test measures (DAX) - Create and test charts and filters - Build user interfaces - Background templates - Publish reports ✔️ Power BI Service Admin Portal Management - Power BI licensing analysis and management - Workspaces and user access management - Alerts and subscriptions setup - Sharing permissions management ✔️ Power Automate -Automated email sending -Spreadsheet updates: -Team notification -App integration -Task management -Automated approvals -Data collection: -File backup: -Sales and marketing automation: -Workflow management ✔️Automation with N8N + Claude -AI-powered automation workflow development: Built N8N workflows integrated with the Claude API to process, classify, and automatically respond to requests, reducing manual processing time by [X%]. -Customer service automation: Implemented N8N + Claude pipelines for automatic ticket/email triage and response, classifying by urgency and sentiment. -Data extraction and structuring: Built workflows using Claude to extract information from unstructured sources (emails, PDFs, forms) and transform it into structured data via N8N, feeding spreadsheets/CRMs. -System integration via webhooks: Connected multiple SaaS tools (CRM, Slack, Google Sheets, Notion) using N8N as an orchestrator, with Claude serving as an intelligence layer for decision-making. -Automated content generation: Automated the creation of reports, summaries, and communications using Claude via N8N, triggered on schedules or by events. -Automated lead qualification: Built workflows that use Claude to analyze and score incoming leads, enriching data before sending it to the CRM. -Intelligent monitoring and alerts: Created automations that use Claude to analyze logs, metrics, or feedback and generate contextualized alerts via Slack/email. ✔️Data & Spreadsheet Automation -Excel/Google Sheets report automation (generation, formatting, automatic sending) -Consolidating data from multiple sources (CSV, spreadsheets, databases) -Data cleaning and preprocessing -Automatic dashboard and PDF report generation ✔️SaaS -AI assistant implementation in SaaS products: Integrated the Claude API into SaaS platforms to add support, search, or content generation features. -Internal process optimization with SaaS tools: Evaluated, selected, and configured SaaS tools (CRM, help desk, automation) combined with AI to improve operational efficiency. -Low-code/no-code workflow creation: Developed solutions using no-code/low-code SaaS automation platforms (N8N, Zapier, Make) integrated with language models to solve business problems without extensive coding. -Operational cost reduction through automation: Replaced repetitive manual tasks with SaaS + AI automations, generating savings of [X hours/month] or [X%] in operational costs. -Documentation and training for automated processes: Created technical documentation and trained teams on the use of AI-automated SaaS tools. ✔️RPA (Robotic Process Automation) -Automating repetitive browser tasks (form filling, downloads) -Desktop task automation (files, folders, legacy systems) -Bots for data entry/extraction in internal systems ✔️Looker Studio/Google Data Studio Reports Development - Pull data from (APIs, SQL Servers, Sheet Files, etc.) - Clean and transform data - Build user interfaces - Background templates - Publish reports It will be a pleasure to work on your project and deliver to you the best solution! Thank you! Marcos.

5+ years of experience 📞 Excellent Communication 🕛 Full Time Availability 🚀 Top Rated Plus 🏅 Certified Data Visualization & Engineering Expert I help businesses turn raw data into powerful dashboards, streamlined workflows and actionable insights. What I offer: - Dashboard Development: Looker Studio, Looker, Microsoft Power BI (DAX & Power Query), Tableau, Metabase, AWS Quicksight, Google Data Studio, LookML - Data Engineering & Transformation: ETL pipelines, SQL & Python scripting, dbt, Snowflake, Google BigQuery, - Data Reporting - Google Analytics, GA4, Jet Admin, Superset, Redash, Retool, Domo, Klipfolio, Periscope, Grafana, Sisense, AirTable, Grow, etc. Growth Metrics. Shopify Reports, E-commerce Reports, etc - Automation & Integration: API-based workflows, Zapier, Google Apps Script - Forecasting & Analysis: Trend analysis, business reporting, performance tracking Technical Skills: - BI Tools: Looker Studio, Power BI, Tableau, Google sheets, Metabase, AWS Quicksight, LookML, - Languages: SQL, Python (Pandas, NumPy), JavaScript - Databases: Snowflake, Google BigQuery, PostgreSQL, MySQL - Workflow Automations: n8n, Make.com, Dagster, Airflow - Cloud & Automation: AWS, Zapier, API integrations I've delivered 100+ data projects across healthcare, finance and tech, including for global firms like Roche and data-first startups. My focus is on creating scalable, insightful solutions that save time and drive better decisions. Let’s work together to unlock the full value of your data. 📩 Message me to discuss your project. Keywords: Best Looker Studio Expert and Dashboard Specialist Freelancer, Looker Studio, LookerML, Google Data Studio, Google Looker Studio, Dashboards, Dashboard Specialist, Dashboard Design, Data Visualization, Interactive Dashboards, Visual Reporting, Financial Reporting, Google Sheets, GA4, Google Analytics 4, GTM, Google Tag Manager, Data Analytics, Data Analysis, Data Insights, Business Intelligence, BI, Analytics, Data Driven, Data Storytelling, Data Reporting, KPI, Metrics, Performance Management, SQL, BigQuery, Snowflake, ETL, Data Engineering, Cloud Analytics, Business Analysis, Analytics Consultant, Visualization Expert, Data Analytics Expert, Freelance Data Analyst, Self Service BI