SanjoyC
I'm

Sanjoy Chowdhury

I help startup founders and digital agencies turn SaaS and AI ideas into secure, scalable, production-ready products. With 25+ years in software architecture, I lead projects from technical discovery and system design through development, deployment and growth.

Sanjoy Chowdhury
About Me

Turning SaaS and AI Ideas into Scalable Products

A technology architect and product engineering partner who helps turn ideas into secure, production-ready platforms

I am a technology architect and product engineering partner with more than 25 years of experience designing and delivering secure, scalable web, mobile and AI-powered applications.

I work with startup founders, digital agencies and growing organisations to take products from initial concept through architecture, development, deployment and long-term scaling.

My experience spans SaaS, EdTech, FinTech, e-Governance and enterprise digital transformation. I specialise in translating business requirements into practical product roadmaps, maintainable system architectures and reliable production platforms.

Rather than focusing only on development, I help clients make the critical technical decisions that reduce rework, control technical debt and prepare products for future growth.

Through Aranax Technologies, I also lead a multidisciplinary engineering team capable of delivering complete products across frontend, backend, mobile, AI, cloud infrastructure and DevOps.

Resume

Skills Backed by Experience

Education

  • Master of Science in Physics

    University of North Bengal

    Specialised in Electronics and Radio Physics, gaining a strong foundation in electronic systems, electromagnetic communication, signal processing and modern communication technologies.

  • Bachelor of Science

    University of North Bengal

    Built a strong foundation in physical laws, mathematical modelling and analytical reasoning, supporting advanced study and careers in science and technology.

Areas of Expertise

  • AI SaaS architecture
  • Multi-tenant application design
  • Role-based access and subscription platforms
  • RAG and agentic AI systems
  • API and integration architecture
  • Cloud and infrastructure planning
  • Product modernisation
  • Technical feasibility and risk assessment
  • Engineering leadership
  • White-label product delivery

Technologies

OpenAIClaudeGeminiPythonTypeScriptNode.jsFastifyNext.jsReactPostgreSQLpgvectorRedisFlutterDockerAWSStrapiRAGAI AgentsMulti-Tenant SaaSRBAC

Experience

  • Founder & SaaS Architect

    Aranax Technologies
    2014 - present

    As Founder and SaaS Architect at Aranax Technologies, I lead the architecture and delivery of AI-powered SaaS, web and mobile products. I work directly with clients to transform business ideas into secure, scalable platforms, covering product strategy, multi-tenancy, RBAC, integrations, LLMs, RAG and AI agents. I also guide multidisciplinary teams, modernise legacy systems and support digital agencies through white-label product engineering.

  • Solution Architect

    Wipro Technologies
    2007 - 2014

    As a Solution Architect at Wipro Technologies, I designed secure, scalable enterprise applications for retail, government, healthcare and other large organisations. I translated complex business and technical requirements into system architectures, integration patterns, data flows and deployment models. I also supported technology evaluation, estimation, risk management, application modernisation and cross-functional delivery while ensuring compliance with performance, security and organisational architecture standards.

  • Technical Lead

    Lexmark International
    2004 - 2007

    As Technical Lead at Lexmark International, I led the design and development of portal, CMS and e-commerce applications. I supported global supply base management initiatives, coordinated technical teams, reviewed solution designs and ensured reliable delivery across business-critical platforms. My responsibilities included system integration, performance improvement, issue resolution, stakeholder collaboration and maintaining scalable, secure applications for global users.

  • Web Developer

    Web .com (India)
    2001 - 2004

    As a Web Developer at Web.com India, I designed and developed responsive business websites using modern web-design and development practices. My responsibilities included converting client requirements into functional layouts, building user-friendly interfaces, integrating dynamic features and ensuring cross-browser compatibility. I also supported testing, performance optimisation, content updates and issue resolution to deliver reliable, visually consistent websites.

Portfolio

My works that I did for clients

Service

Engineering With Scale in Mind

  • AI & SaaS Architecture Review

    For founders and organisations that need an independent technical assessment before investing heavily in development.

    Typical deliverables:

    • Technical-feasibility assessment
    • Recommended system architecture
    • Data model and integration strategy
    • Multi-tenancy, RBAC and security planning
    • Infrastructure and LLM cost assessment
    • Development roadmap and estimates
  • AI SaaS Product Development

    End-to-end product engineering for clients who need a reliable team from initial discovery through production launch.

    Typical scope:

    • Product discovery and MVP definition
    • UI, frontend and backend development
    • Multi-tenant SaaS architecture
    • Subscription and billing integration
    • AI and third-party integrations
    • Cloud deployment and monitoring
    • Post-launch optimisation and scaling
  • RAG & Agentic AI Systems

    Custom AI systems that connect business data, documents and workflows with reliable, context-aware automation.

    Typical scope:

    • RAG architecture and knowledge-base design
    • Document ingestion and vector indexing
    • Retrieval quality evaluation
    • Citations and permission-based access
    • AI agents and tool integrations
    • Human escalation workflows
    • Cost, latency and accuracy optimisation
  • Fractional CTO & Technical Advisory

    Senior technical leadership for founders and growing teams that are not ready to appoint a full-time CTO.

    Typical support:

    • Technology strategy and architecture decisions
    • Product and engineering roadmap reviews
    • Team structure and hiring guidance
    • Vendor and codebase evaluation
    • Security, scalability and cost reviews
    • Technical oversight during delivery
    • Risk identification and resolution
  • White-Label Engineering Partnership

    Confidential architecture and product-development support for digital agencies that need additional technical capability.

    Typical support:

    • Pre-sales and proposal assistance
    • Technical discovery and estimation
    • Solution architecture
    • AI, backend, web and mobile development
    • Client-facing technical leadership
    • Complete product delivery under NDA
    • Ongoing maintenance and scaling support
  • Product Modernisation & Scaling

    Architecture and engineering support for existing applications that have become slow, unstable, expensive or difficult to extend.

    Typical outcomes:

    • Improved application performance
    • Stronger security and access controls
    • Reduced infrastructure and operational costs
    • Modernised architecture and technology stack
    • Controlled technical debt
    • Easier feature development
    • Improved reliability and scalability
Testimonials

What people say about me

We brought him in for an MVP. What we got was a production-ready system with proper data modeling, subscription workflows, and infrastructure planning. His thinking is architectural, not just tactical.

Rebecca Collins

CEO, EduNova Labs

He identified structural flaws in our early backend design that even our internal team missed. His ability to align monetization logic with system architecture is rare.

Daniel Brooks

CTO, FinAxis Solutions

Security, RBAC, audit trails — everything was implemented cleanly and professionally. We operate in a compliance-heavy environment, and his attention to system integrity was exceptional.

Olivia Martinez

Director, Geromi Dynamics

He doesn't jump into code blindly. He starts with infrastructure assumptions, scaling risks, and data flow modeling. That strategic approach completely changed how we build products.

James Carter

Co-Founder, LaunchStack

Our backend was unstable before he stepped in. Within weeks, we had a properly structured API layer, Redis caching, and queue handling that drastically improved performance.

Sophia Nguyen

Product Lead, NexaScale
Insight

Latest tips, tricks & Updates

    Contact Me

    Planning an AI or SaaS Product?

    • Call Me

      +91 983 079 9651 / 891 037 6939
    • Address

      Module No: 308, Webel IT Park Phase II DH Block, Action Area I, Newtown, Kolkata, India