11/09/2026 updated

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Senior Full Stack AI/ML Engineer | Python, Data Analytics & Automation

Chelmsford, USA
Worldwide
DBA (Doctor of Business Administration)
Chelmsford, USA
Worldwide
DBA (Doctor of Business Administration)

Profile attachments

Harry_Kasagani_Full stack.pdf

Tailwind CSSFlutterJavaScriptAndroid (Software)IOS ApplicationsHTML5Python (Programming Language)PostgreSQLMongoDBMySQLMicrosoft Power BINext.jsTypeScriptReact.jsExpress.jsGoogle FirebaseFastAPIPlotlyDartGraphQLReact Native
  • Data Analysis
  • Python
  • Artificial Intelligence
  • Machine Learning
  • Data Visualization
  • Data Engineering
  • Microsoft Power BI
  • API Integration
  • Generative AI
  • Web Scraping
  • Gaming
  • TypeScript
  • React
  • SQL
  • Node.js
  • Software Testing
  • Next.js
  • Flutter
  • React Native
  • Mobile App

Experience

Professional experience10+ years
Freelancer since2012

Languages

EnglishFluent

Project history

Senior Full Stack Engineer (Web & Mobile)

Sportivo AI
• Led full stack development of a sports analytics and betting platform, owning the web app, the mobile apps and the
backend from architecture to production.
• Built React/Next.js web apps with 10+ interactive dashboards for live odds, predictions, backtesting and user
analytics.
• Developed cross-platform Flutter apps for iOS and Android with real-time odds, push alerts and personalized insights.
• Designed Node.js/Express and Python REST APIs serving data from 15+ sources and 2M+ historical records.
• Integrated 12+ ML prediction models into the web and mobile apps, and improved API and database performance by
45%.
• Automated 25+ data pipelines and set up CI/CD and Docker-based deployments, reducing manual work by 70%.

Full Stack Engineer (Web & Mobile)

Rational AI
• Built full stack financial analytics products using React for web, React Native and Flutter for mobile, and
Node.js/Express with Python for the backend.
• Delivered web and mobile dashboards tracking 40+ KPIs for transactions, forecasting and risk.
• Developed backend services processing 1.5M+ transactions monthly, and integrated 10+ third-party financial and
payment APIs.
• Built mobile features including secure login, real-time alerts and reports on the go.
• Embedded 8+ forecasting and anomaly-detection models into the product through APIs.
• Automated 30+ reports, cutting reporting time by 65%.

Full Stack Developer

Selerity
• Developed web applications with React and Node.js/Express for financial data, market research and revenue
tracking.
• Built React Native mobile apps that give users fast access to financial data and reports.
• Designed REST APIs and backend services ingesting 500K+ records daily from 12+ external feeds.
• Designed and optimized PostgreSQL databases, cutting query times by 40%.
• Improved data accuracy to 99.5% with validation and duplicate detection, and set up monitoring for reliable uptime.

Junior Full Stack Developer

Intulog
• Built web applications and internal tools using JavaScript, Node.js, Python and SQL, adopting React as it matured.
• Developed responsive, mobile-friendly interfaces for business reporting and operations.
• Built backend logic and SQL databases supporting 15+ business projects and 100K+ records monthly.
• Created dashboards tracking 25+ KPIs and automated 20+ reports, reducing manual work by 50%.
• Worked with 5+ developers on code reviews, database optimization and releases.

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