b
basu_ayan

Ayan Basu

@basu_ayan

Developer

India
English, Hindi
About me
Hi! I’m an experienced Software Developer and Industrial Automation Professional. I build Android apps, websites, inventory and hospital management systems, e-commerce solutions, and custom software. I work with Kotlin, Java, Python, Firebase and SQLite. I also specialize in Siemens PLC/PCS programming using SIMATIC Manager, PCS 7 and TIA Portal for standalone and integrated systems. Have an idea or requirement? Message me and let’s discuss how I can turn it into a reliable working solution.... Read more

Skills

b
basu_ayan
Ayan Basu
Offline • 
Average response time: 1 hour

See my services

Android App Development
I will do android app development
From$200 / projectMore details

Work experience

Personal_AI

Founder

Personal AI • Freelance

May 2013 - Present • 13 yrs 4 mos

### Key Achievements & Technical Expertise • Developed functional, user-friendly **Android applications** using Kotlin and Java for business, inventory, healthcare, and data-management requirements. • Designed modern and responsive **Android UI/UX**, with structured navigation and compatibility across different screen sizes. • Implemented **Firebase Authentication, Cloud Firestore, Realtime Database, SQLite, and cloud-based data management**. • Developed secure **login, registration, profile management, CRUD operations, search, filtering, and role-based access** features. • Integrated **REST APIs and backend services** and implemented online/offline data handling and synchronization. • Experienced with **Android Studio, Kotlin, Java, Python, Firebase, and SQLite**, including debugging, testing, optimization, and application maintenance. • Developed and commissioned **Siemens PLC-based industrial automation systems**, including standalone and integrated control solutions. • Experienced with **SIMATIC Manager, TIA Portal, PCS 7, and Siemens S7 PLC systems**. • Developed PLC logic using **LAD, FBD, STL/SCL**, structured programming, sequences, interlocks, permissives, and alarm logic. • Designed and configured **HMI/SCADA and PCS 7 DCS systems** for industrial process monitoring and control. • Configured **digital/analog I/O, PID control loops, instrumentation interfaces, remote I/O, drives, and third-party equipment**. • Worked with industrial communication systems including **PROFIBUS, PROFINET, and Industrial Ethernet**. • Experienced in **PLC troubleshooting, fault diagnosis, program modification, system expansion, testing, commissioning, and startup support**. • Focused on delivering **reliable, maintainable, secure, and practical software and industrial automation solutions**.