Md Rayhan Khan, hands-on CTO and Enterprise Software Architect

Md Rayhan Khan

CTO & Enterprise Software Architect

Building reliable AI-ready SaaS, healthcare, ERP, and cloud-native platforms through hands-on architecture, engineering leadership, and delivery ownership.

CTO Roles Software Architect AI Platform Architect Technical Leadership

About Me

Practical hands-on CTO and Enterprise Software Architect with 15+ years of experience designing and delivering reliable enterprise applications, SaaS platforms, AI-ready workflows, and ERP solutions across healthcare, education, textile, and cross-domain business systems. Known for combining architecture decisions, hands-on engineering, problem solving, mentoring, and delivery ownership.

Experience : 15+ Years
Location : Dhaka, Bangladesh
Email : rayhan.cse.ewu@gmail.com
Phone : +880 1675 665966
Current Role : CTO & Lead AI Software Architect
15+ Years

Hands-on software engineering, architecture, SaaS, ERP, and AI-ready platform delivery.

AI Platforms

LLM, voice AI, automation, and intelligent workflow integration across business systems.

ERP Systems

Education, textile, HR, accounting, inventory, and cross-domain operational platforms.

Team Leadership

Architecture standards, mentoring, code quality, delivery ownership, and technical roadmaps.

Architecture & Leadership Impact

Key capabilities and leadership strengths I bring to build scalable, secure, and intelligent enterprise solutions. Selected work is presented at a high level to respect confidentiality while focusing on architecture, contribution, and outcomes.

Enterprise Architecture

Scalable, maintainable platforms for healthcare, education ERP, SaaS, and business operations.

AI/LLM Platform Strategy

AI-ready workflows, real-time voice AI, conversational systems, and intelligent automation.

SaaS & Cloud-Native Systems

Microservices, Web APIs, CI/CD, DevOps workflows, and scalable infrastructure.

ERP & Business Platforms

University, textile, HR, accounting, inventory, and commercial operations systems.

Engineering Leadership

Technical roadmaps, standards, mentoring, cross-functional delivery, and team ownership.

Performance & Reliability

Complex debugging, optimization, database design, and long-term maintainability.

WHAT I BRING TO ORGANIZATIONS

Outcome-focused technical leadership for reliable platforms, AI-ready products, modernization, and hands-on enterprise delivery.

01

Turn Complex Requirements Into Scalable Platforms

Convert business needs into production-ready SaaS, ERP, AI-ready, and enterprise platforms.

SaaS ERP AI-ready
02

Lead Hands-on Engineering Delivery

Guide architecture while staying close to code, APIs, integrations, debugging, and delivery risks.

CTO Architect Delivery
03

Build AI-ready Product Foundations

Integrate LLMs, voice AI, automation, APIs, and intelligent workflows across modern business domains.

LLM Voice AI Automation
04

Modernize & Stabilize Systems

Improve architecture, performance, reliability, cloud readiness, and long-term maintainability.

Performance Reliability Modernization
05

Connect Business And Technology

Translate stakeholder goals into roadmaps, architecture decisions, execution plans, and team direction.

Roadmaps Stakeholders Execution
06

Raise Engineering Standards

Improve code quality, architecture discipline, mentoring, delivery practices, and decision-making.

Standards Mentoring Quality

EXPERIENCE

Hands-on CTO leadership across AI platforms, SaaS, ERP, cloud-native architecture, and enterprise delivery. Responsibilities are summarized from selected roles and presented at a high level to respect confidentiality.

CTO & Lead AI Software Architect

aithics Inc. | Manhattan, New York, USA (Remote)

Current Role Nov 2024 - Present
  • Leading architecture, engineering direction, and delivery execution of an AI-powered healthcare platform.
  • Focused on intelligent automation, conversational AI, voice AI, scalable system architecture, and cloud-ready engineering.
AI Platforms SaaS Healthcare Architecture Hands-on CTO Voice AI
View key responsibilities
  • Define platform architecture, technical roadmap, and engineering standards.
  • Lead AI/LLM workflow integration, voice AI, and conversational systems.
  • Architect scalable backend APIs using .NET / ASP.NET Core and modern frontend systems using React/Next.js.
  • Translate US stakeholder requirements into technical execution plans.
  • Guide engineering teams across architecture, implementation, performance, reliability, and delivery.
  • Contribute hands-on to complex technical problem-solving, integration, and platform scalability.

Software Architect & Technical Lead

East West University | Dhaka, Bangladesh (On-site)

Dec 2019 - Oct 2024
  • Led architecture, modernization, performance improvement, and technical delivery of university-wide Educational ERP systems.
  • Supported academic and administrative operations through maintainable enterprise platform delivery.
Education ERP Architecture Team Lead Performance Modernization
View key responsibilities
  • Architected, developed, and modernized enterprise-grade Educational ERP solutions serving all university-wide academic and administrative operations.
  • Designed scalable, maintainable systems using .NET technologies, enterprise architecture principles, and modern engineering practices.
  • Led performance optimization, system reliability improvements, complex debugging, and long-term maintainability initiatives.
  • Managed full SDLC — from requirements analysis and architecture design through deployment, support, and continuous improvement.
  • Supervised and mentored a cross-functional team of software and QA engineers delivering robust enterprise applications.
  • Contributed to database design, backend engineering, API development, and system integration strategies across the university platform.

Technical Team Lead | Senior Software Engineer

Prime Link Limited | Dhaka, Bangladesh (On-site)

Dec 2017 - Nov 2019
  • Delivered Educational ERP solutions for multiple universities and academic institutions.
  • Focused on backend architecture, database-driven workflows, system enhancement, and long-term maintainability.
Education ERP .NET Team Lead Backend
View key responsibilities
  • Led backend development, database design, and ERP module implementation using .NET technologies.
  • Designed scalable backend systems, APIs, and enterprise application workflows.
  • Supervised software engineers and QA engineers throughout the full software development lifecycle.
  • Collaborated with institutional stakeholders to analyze requirements and deliver effective technology solutions.
  • Supported application architecture, performance optimization, debugging, and maintainability improvements.
  • Contributed to technical planning, team coordination, and release delivery for education-sector ERP platforms.

Software Engineer & Technical Team Lead

SQUARE GROUP | Dhaka, Bangladesh (On-site)

Apr 2013 - Dec 2017
  • Built and enhanced enterprise ERP and industrial software systems for textile and corporate business workflows.
  • Covered accounting, HR, inventory, commercial operations, and maintainable application delivery.
Textile ERP Industrial Operations Maintenance
View key responsibilities
  • Designed and developed business-critical ERP modules for accounting, HR, inventory, commercial, and textile operations.
  • Built customized enterprise applications to streamline textile, garment, and corporate business processes.
  • Contributed to scalable and maintainable .NET-based enterprise application architecture.
  • Led technical implementation, application enhancement, debugging, and long-term system maintenance.
  • Collaborated with departments and stakeholders to translate business requirements into practical software solutions.
  • Supported deployment, system optimization, and continuous improvement of enterprise application infrastructure.

Software Engineer

MOWLA CORP | Jamaica, New York, USA (Remote)

Jan 2012 - Apr 2013
  • Delivered web-based business applications and customized software solutions for US-based clients.
  • Supported eCommerce workflows, frontend/backend development, database integration, and system enhancement.
eCommerce Web Apps OpenCart Database
View key responsibilities
  • Developed and maintained web-based business applications and customized software solutions for US-based clients.
  • Built eCommerce workflows using OpenCart and related web technologies.
  • Contributed to frontend, backend, database integration, and application enhancement activities.
  • Implemented user-focused web features, business workflows, and responsive application functionality.
  • Supported troubleshooting, debugging, maintenance, and performance improvement activities.

HANDS-ON CTO OPERATING MODEL

How I Lead And Deliver

I combine technical leadership, architecture decisions, hands-on engineering, problem solving, and delivery ownership.

Technical Leadership

Lead architecture direction, engineering standards, mentoring, and technical roadmaps.

Enterprise Architecture

Design scalable SaaS, ERP, API, integration, and cloud-native platform foundations.

AI Platform Leadership

Shape AI-ready workflows using LLMs, voice AI, automation, model integration, and practical guardrails.

Hands-on Engineering

Stay close to code, APIs, integrations, debugging, performance, and delivery-critical implementation.

Complex Problem Solving

Resolve architecture, reliability, performance, data, integration, and maintainability challenges.

Delivery Ownership

Translate business priorities into execution plans, team direction, release discipline, and measurable progress.

TECHNICAL LEADERSHIP & ENGINEERING STACK

Hands-on engineering depth with architecture, AI platform delivery, cloud modernization, data systems, and engineering leadership.

AS

Architecture & Strategy

Design direction, standards, and enterprise system decisions.

SaaS Architecture ERP Platforms Microservices API Strategy System Design Clean Architecture Security-aware Architecture Roadmaps
HE

Hands-on Engineering

Still close to the code: APIs, integrations, and product delivery.

.NET / ASP.NET Core C# API & Integration Engineering React / Next.js TypeScript Background Services Enterprise App Development
DS

Data & Storage

Relational, document, design, and performance capability.

SQL Server PostgreSQL MySQL MongoDB Azure SQL Database Design Query Optimization
CD

Cloud, DevOps & Reliability

Deployment, infrastructure, production health, and scale.

Azure AWS Google Cloud Docker Kubernetes CI/CD Observability Scalable Infrastructure
AI

AI/LLM Platforms

Model-provider aware integration, workflows, and automation.

OpenAI Gemini Claude DeepSeek LLM Integration Voice AI RAG / Automation
EL

Engineering Leadership

Team standards, delivery ownership, quality, and problem solving.

Code Quality Engineering Standards Mentoring Delivery Ownership Problem Solving Performance & Reliability

CASE STUDIES

Executive Case Dossier

Selected work is summarized at a high level to protect confidentiality while highlighting problem context, decision role, hands-on contribution, and delivery result.

Each dossier highlights the problem, decision role, hands-on contribution, and business result.

AI Healthcare Platform

AI Mental Healthcare Platform

CTO and Lead AI Software Architect

Problem

US-market mental healthcare workflows needed secure, scalable, AI-assisted product foundations and reliable delivery.

Decision Role

Owned architecture, AI workflow direction, APIs, automation, model integration, roadmap translation, and delivery execution.

Hands-on Work and Result

Built backend/frontend delivery paths, AI-assisted workflows, and scalable platform foundations for modern healthcare operations.

Education ERP

University ERP Modernization

Software Architect and Technical Lead

Problem

University operations needed scalable academic and administrative ERP systems.

Decision Role

Led architecture, database design, API strategy, reliability improvements, SDLC, and mentoring.

Hands-on Work and Result

Delivered backend engineering, integrations, performance work, and maintainable university systems.

Industrial ERP

Textile and Operations Platform

Software Engineer and Technical Lead

Problem

Accounting, HR, commercial, inventory, and textile workflows needed operational control.

Decision Role

Built ERP modules, database workflows, business logic, debugging, and long-term support.

Hands-on Work and Result

Streamlined operational control across industrial business units through stable ERP delivery.

Business Automation

Cross-domain Business Systems

Full-stack Engineer and Technical Lead

Problem

Businesses needed practical web applications, eCommerce workflows, reporting, and operational systems across multiple domains.

Decision Role

Translated business needs into application workflows, database structures, integrations, and maintainable delivery plans.

Hands-on Work and Result

Delivered web applications, eCommerce platforms, reporting tools, and automation systems that improved productivity and process control.

Architecture Thinking

High-level architecture views are simplified and anonymized to show decision approach while protecting project confidentiality.

AI-assisted Healthcare Platform

Secure AI Workflow Foundation

Connects healthcare workflows, application delivery, AI services, data boundaries, and monitoring into a maintainable product foundation.

User / Care Workflow Web App & APIs AI Workflow Service LLM / Voice AI Layer Data, Audit & Monitoring
Enterprise SaaS / ERP Platform

Modular Business System Architecture

Organizes business modules, APIs, databases, integrations, reporting, and deployment paths for long-term maintainability.

Business Users ERP / SaaS Modules API & Service Layer Data & Reporting Integrations & Cloud Delivery
Hands-on CTO Delivery Model

From Business Priority To Reliable Release

Shows how I connect strategy, architecture, engineering standards, hands-on implementation, quality, and feedback into practical delivery.

Business Priority Architecture Decision Engineering Standards Hands-on Build / Review Reliability Check Release & Feedback

Additional Delivery History

A compact secondary summary of earlier hands-on delivery work across business systems.

Additional Delivery History

Earlier delivery work includes ERP modules, web applications, eCommerce platforms, reporting systems, and business automation tools across multiple domains.

Selected demos, project references, and additional delivery history are available on request.

ERP Modules Business Automation eCommerce Web Applications Reporting Integrations

Selected Case Studies

Representative platforms from healthcare AI, education ERP, industrial ERP, and business automation work. These examples focus on architecture responsibility, system complexity, and business value.

AI Healthcare Platform

US-market AI-powered healthcare workflows

Role: CTO & Lead AI Software Architect

Focus: AI/LLM integration, real-time voice AI, conversational workflows, scalable backend architecture, React/Next.js frontend delivery.

Value: Turns complex healthcare interactions into intelligent, automated, and scalable digital workflows.

Education ERP

University-wide academic and administrative ERP

Role: Software Architect & Technical Lead

Focus: Enterprise architecture, .NET systems, database design, performance optimization, integration strategy, team mentoring.

Value: Improved maintainability, reliability, and operational efficiency across university departments.

Industrial ERP

Textile, HR, commercial, inventory, and accounting systems

Role: Sr. Software Engineer & Team Leader

Focus: ERP workflows, business-critical modules, database-driven architecture, deployment, debugging, and long-term support.

Value: Streamlined operational processes across textile, garment, and corporate business units.

Business Automation

HRMS, accounts, inventory, procurement, and eCommerce platforms

Role: Full-stack Engineer, Architect, and Technical Lead

Focus: ASP.NET, Web API, SQL Server, OpenCart, responsive UI, reporting, and operational workflow design.

Value: Delivered practical systems for business productivity, reporting accuracy, and process control.

HRMS Software

Click Here to See Demo
Accounts Management System

Click Here to See Demo
Inventory Management System

Click Here to See Demo
Dyes Chemical Management System

Click Here to See Demo
Commercial Management System

Click Here to See Demo
Cotton Procurement Management System

Click Here to See Demo
LC Management System

Click Here to See Demo
Online News Paper Management System

Click Here to See Demo
Attendance Management System

Click Here to See Demo
Mobile Bill Management System

Click Here to See Demo
Masjid Management System

Click Here to See Demo
Education ERP Systems

Click Here to See Demo
Fragrance Ecommerce Site

Click Here to See Demo
Amazon Drop Shipping

Click Here to See Demo
Accessories Ecommerce Site

Click Here to See Demo
Food Shop

Click Here to See Demo
Canada Immigration Site

Click Here to See Demo
Mowla Systems Home Page

Click Here to See Demo
Personal Portfolio Site

Click Here to See Demo
MowlaSystems Official Site

Click Here to See Demo
It Company Home Page

Click Here to See Demo

EDUCATION

Academic Foundation

Computer science education supporting architecture, systems design, and long-term engineering leadership.

MS

M.Sc. in Computer Science

2017 - 2018

Jahangirnagar University

Advanced computer science foundation for architecture thinking and complex problem solving.

Computer Science Systems Thinking Research
BS

B.Sc. in CSE

2006 - 2012

East West University

Core software engineering, database systems, programming, and product delivery foundation.

Software Engineering Database Systems Programming Foundation

CONTACT

Ready for global technology leadership conversations

Let's build reliable AI-ready platforms

Available for global CTO, Enterprise Software Architect, AI/SaaS Platform Architect, technical leadership, modernization, architecture review, and hands-on enterprise delivery roles.

Email Me LinkedIn Profile

Global Delivery Signals

LinkedIn Profile GitHub Work Client Reviews

Additional international client reviews are available on request.

Dhaka, Bangladesh | Global remote collaboration

Note: Selected demos, project references, and delivery history are available on request.