Available for remote projects worldwide

DEEPAK KUMAR

Private AI & RAG Custom Software Cloud & Linux Security-First

I help businesses deploy private AI assistants, build custom PHP and Python applications, and run them on secure, reliable cloud or Linux infrastructure. From architecture to deployment, I build systems designed for real operations.

Discuss Your Project View Case Studies
Private LLM Deployed
// bare-metal inference
Full Stack Built
// DNS to deployment
Private AI and Linux server infrastructure
Deepak Kumar — Chief Technology Officer & AI Infrastructure Engineer
Deepak Kumar
Chief Technology Officer · JSI Software Solutions
Private AI RAG Systems PHP/Python Linux Security
Since
2020
3
Core Areas
∞
Scale
Private AI Systems Custom Software Python & FastAPI Core PHP & MySQL Linux Infrastructure Cloud & DevOps Security Reviews RAG Systems Private AI Systems Custom Software Python & FastAPI Core PHP & MySQL Linux Infrastructure Cloud & DevOps Security Reviews RAG Systems
About

Engineering intelligence.
Operating real systems.

From building mail servers and custom server control environments to deploying private LLMs on bare-metal infrastructure — I work across the complete stack. My focus: private AI systems, custom business software, secure infrastructure, and engineering that reliably runs in production.

AI
Private LLM Deployments
PHP
Business Applications & APIs
Linux
Cloud & Server Operations
Sec
Security-First Engineering
Services

Focused Client Offers

Strategic technology services engineered to solve core business challenges, secure assets, and scale infrastructure.

Private AI Systems

Internal AI assistants and knowledge search for organizations that need complete privacy, data governance, and on-premise control.

  • RAG assistants and intelligent document search
  • Private LLM deployment on your own infrastructure
  • API integration with existing business workflows
  • Access controls and strict privacy governance
Discuss this service

Custom Business Software

Tailored web applications designed to eliminate spreadsheet bottlenecks, manual workflows, and fragmented business operations.

  • CRM/ERP systems and executive dashboards
  • Client portals and automated reporting tools
  • RESTful APIs and microservice integrations
  • End-to-end workflow automation
Discuss this service

Cloud, Linux & DevOps

High-availability infrastructure for hosting, application delivery, internal databases, and company-wide mail servers.

  • Docker containerization & deployment pipelines
  • Server hardening & performance tuning
  • Automated backup, logging & monitoring setups
  • Custom email infrastructure (SMTP, SPF, DKIM, DMARC)
Discuss this service

Security Reviews & Hardening

Authorized security assessments, code audits, and secure infrastructure engineering to protect applications against vulnerabilities.

  • Authorized web and infrastructure security reviews
  • Secure code review and remediation guidance
  • Linux OS hardening and access control policy setup
  • Logging, threat monitoring and alert configuration
Discuss this service
Technical Mastery

Skills & Proficiency

Hands-on expertise across full-stack engineering, artificial intelligence, Linux server management, and security.

Proficiency Levels
AI / Machine Learning
92%
Generative AI / LLMs
88%
Python Development
95%
Core PHP
92%
MySQL
90%
Linux / Server Admin
90%
Automation Testing
87%
Cybersecurity
85%
DevOps / Docker
82%
Cloud Architecture
80%
Technology Stack
Python
AI/ML
GenAI
PHP
MySQL
Linux
Docker
Django
Flask
Git
Nginx
Redis
Robot FW
Selenium
Security
Network
Bash
JS
Cloud
DB Design
Case Studies

Featured Projects

Real production engineering — from centralized server control platforms to mail servers and mobile security applications.

SRV
Featured Flagship Infrastructure Project
End-to-End Centralized Server Management Platform
Infrastructure & Hosting

End-to-End Centralized Server Management Platform

Designed and deployed a centralized server management infrastructure for JSI Software Solutions — bringing server operations, web hosting, DNS management, database administration, and security controls into a single unified control platform.

  • Unified control for server operations, web hosting, and domain DNS
  • Centralized MySQL/MariaDB database and site administration
  • Security & access-controlled management environment
  • Scalable architecture supporting multi-domain growth
  • Eliminated fragmented management across independent systems
  • Single point of administration for critical server resources
Linux Admin Server Control DNS Manager MySQL/MariaDB Networking Security
Live Platform
MAIL
Custom Email Server & Mail Infrastructure
DevOps & Mail

Custom Email Server & Mail Infrastructure

Built a complete self-hosted email infrastructure from the ground up for JSI Software Solutions — replacing managed third-party email with an internal mail backend, webmail interface, and deliverability stack.

  • Full delivery stack: SMTP, DNS, SPF, DKIM, DMARC
  • Sender reputation setup and IP reputation management
  • Deliverability optimization for high inbox placement
  • Roundcube webmail frontend integration
  • Independent internal mail server control
Linux SMTP DNS SPF/DKIM/DMARC Roundcube Email Security
Live Webmail
APP
Secure Shutdown — Android Anti-Theft Protection
Mobile Security

Secure Shutdown — Android Anti-Theft Protection

Designed and developed an Android security application focused on protecting devices from unauthorized power-off attempts, restarts, and stolen device lockouts.

  • Unauthorized shutdown and restart prevention
  • Intruder photo alerts with real-time Telegram notifications
  • Device lockdown and suspicious activity detection
  • Anti-theft security controls
  • Published live on Google Play Store
Android Security Telegram API Anti-Theft Play Store
Play Store Website
Note: These are selected featured case studies. Due to page length constraints and NDA agreements, I cannot showcase all of my projects on a single page. I have built many more systems — connect with me to discuss full portfolio experience, custom architecture, or specific project requirements.
Career Journey

Experience Timeline

Aug 2026 — Present  ·  1 mo Full-time

Founder

 CyberBaithak  ·  Free Cyber Security Awareness Program under JSI Software Solutions

Founded Cyber Baithak — a free cyber security awareness initiative under JSI Software Solutions — with a mission to make every Indian citizen cyber-attack ready. Design and deliver hands-on workshops covering phishing & social engineering, AI-driven fraud, password & account security, safe internet usage, mobile security, and UPI/banking fraud prevention — for students, professionals, parents, and senior citizens.

Key Highlights & Impact
  • Built and lead a team of volunteer cyber trainers, researchers, and ethical hackers
  • Partnered with schools, colleges, and law enforcement/cyber cells for credible, on-ground impact
  • Issue free certification to every participant on completion
  • 100% free of cost — no registration fee, ever
"Cyber Baithak reflects my belief that the same expertise driving enterprise technology should also be used to protect everyday citizens from digital threats."
Cybersecurity Awareness Free Workshops Public Safety Ethical Hacking Community Outreach
Visit CyberBaithak.com
May 2023 — Present  ·  3 yrs 4 mos Full-time

Chief Technology Officer

 JSI Software Solutions  ·  Rampur, Uttar Pradesh, India · Hybrid

As the Chief Technology Officer at JSI Software Solutions, I lead the organization’s technology strategy and innovation efforts. I drive technology initiatives aligned with core business objectives, manage complex projects from inception to completion, and oversee the integration of cutting-edge solutions.

Deepak Kumar CTO JSI Software Solutions
Role Responsibilities
  • Strategic Leadership: Executing technology strategies aligned with business growth
  • Team Management: Mentoring IT teams in a high-performance environment
  • Innovation: Spearheading cutting-edge AI and software tech adoption
  • Project Oversight: Managing complex projects for timely, high-quality delivery
  • Technology Integration: Integrating new tech to enhance system efficiency
Key Competencies & Skills
  • Strategic Planning: Business & Tech Alignment
  • Leadership: Mentoring & Cross-functional Management
  • Innovation Management: Driving Tech Trends
  • Project Management: On-time Delivery Scope
  • Technical Proficiency: Deep Strategic Tech Application
CTO Strategic Leadership Team Management Innovation Management Project Oversight AI/ML Full-Stack
Feb 2021 — Apr 2022  ·  1 yr 3 mos Part-time

Penetration Tester

 JSI Software Solutions  ·  Manesar, Haryana, India · Hybrid

Responsible for assessing and fortifying the security posture of the organization by simulating cyber-attacks to identify vulnerabilities and weaknesses in systems, networks, and applications. Conducted thorough security assessments, performed vulnerability scans, and executed manual penetration tests to uncover potential threats. Worked closely with development and IT teams to provide actionable recommendations for enhancing security measures and ensuring infrastructure integrity.

Penetration Testing Vulnerability Assessment Security Audits Risk Mitigation Network Security
Jan 2020 — Feb 2021  ·  1 yr 2 mos Part-time

Senior PHP Developer

 JSI Software Solutions  ·  Rampur, Uttar Pradesh, India

Led the design, development, and deployment of complex web applications and enterprise solutions. Wrote high-quality, maintainable PHP code using frameworks such as Laravel and Symfony, optimized application performance, oversaw database management, integrated REST APIs, and ensured strict adherence to security best practices. Mentored junior developers and collaborated with cross-functional teams to deliver projects on time.

Core PHP Laravel Symfony Database Administration API Integration MySQL
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