USAPrivate beta
Real Estate Underwriting SaaS
Vertical software shaped around real underwriting work.
Custom intake, document handling, and CRM-connected operations for an industry-specific workflow.
Vertical SaaSDocumentsCRMWorkflows
SHUBHAM KASHYAPAvailable for select projects
Upwork · Top Rated Plus
Full Stack AI Developer · Multi-Tenant SaaS
AI SaaS, multi-tenant platforms, and production software: architecture, development, integrations, and deployment.
Direct collaboration from scope conversation through production delivery.
Top Rated Plus
Upwork talent
$80K+
Verified earnings
4,200+
Upwork hours
100%
Job success
Verified Upwork history · 37+ production contracts · repeat and long-term clients
00 / A quick introduction
How I think about AI product delivery, and what you can expect when we collaborate on the technical side.
01Production work
Clients who trusted me with real products.
Live businesses, repeat engagements, and software used in production, not tutorial projects or concept screens.
Italylogoarena.com
LogoArena
A full-stack logo contest and marketplace platform.
Long-term partnership across frontend, backend, and ongoing delivery for a live Italian SaaS brand.
Next.jsMarketplaceSaaSLong-term
Italyhidingelephant.com
Hiding Elephant
AI logo generation SaaS for professional designers.
A repeat engagement covering the complete generation experience through production deployment.
AI generationNext.jsProduct UXSaaS
Canadausecortana.ai
UseCortana / AgentKong
A multi-channel AI sales agent with voice, text, and CRM.
Fixed-price SaaS delivery followed by ongoing product work across a production agent platform.
Voice AIAI agentsLiveKitAgentic CRM
Switzerlandapp.meisterflow.ch
MeisterFlow
Multi-tenant booking and invoicing for home services.
Tenant-isolated product architecture with billing, booking workflows, and AI automation hooks.
Multi-tenantSupabaseStripeAutomation
CanadaClient-owned product
Image Generation SaaS
A production-ready AI image generation application.
Fixed-price delivery from a tightly scoped MVP through complete SaaS product surfaces.
AI generationAPI integrationNext.jsSaaS
02Selected case studies
The work behind the screenshots.
A closer look at the product decisions, systems, and technical work behind three engagements.
01Multi-channel AI sales agent
UseCortana
The client needed a production platform, not a prototype, that could coordinate voice, text, and CRM activity in one coherent product.
What I built
I led the architecture, full-stack product build, voice and real-time integrations, agent orchestration, and production delivery.
- VAPI and LiveKit voice pipeline
- Agentic CRM behavior
- Multi-channel communication
- Production SaaS surfaces
5.0 rating · $3,915 · 131 hours · ongoing product work
02Multi-tenant operations SaaS
MeisterFlow
A Swiss home-services product needed booking, invoicing, tenant isolation, and billing built on foundations that could grow beyond the first release.
What I built
I designed and built the Next.js and Supabase architecture, Stripe billing, core workflows, and clean integration points for AI automation.
- Tenant-level data isolation
- Stripe subscriptions
- Booking and invoicing logic
- AI-ready architecture
5.0 rating · live production platform · scalable beyond scope
03Long-term marketplace engineering
LogoArena
A live marketplace needed a technical partner who could keep delivering across evolving product requirements, not disappear after the first release.
What I built
I worked across frontend, backend, contest and marketplace workflows, maintenance, and ongoing production feature delivery.
- Contest and marketplace flows
- Multi-role product UX
- Ongoing production delivery
- Long-term codebase stewardship
5.0 rating · $24,543 across contracts · 2,433 hours
03Upwork history
The strongest claims are the ones clients make.
Verified contract outcomes from the platform where these engagements began.
Verified Upwork contract5.0
MeisterFlow · Multi-Tenant Booking & Invoicing Platform
“Building a SaaS platform is challenging, and I needed someone who could think beyond the requirements. Shubham consistently came up with smarter, more scalable solutions and was always thinking several steps ahead. His communication was professional, his work was high quality, and he genuinely cared about the long-term success of the product. I highly recommend him and would gladly work with him again.”
Next.js · Supabase · Stripe · Google/Outlook OAuth · Docker
Verified Upwork contract5.0
AI Sales Bot / SaaS Web App
“Respectful, knowledgeable, honest and smart.”
$24,500
Fixed-price AI platform
Verified Upwork contract5.0
LogoArena · Full Stack AI Developer
“Really enjoyed working with Shubham. He's creative, dependable, and easy to collaborate with. The work was completed on time, communication was great, and the work was always high-quality.”
$8,144
679 hours · Long-term · Reliable · Committed to quality · Clear communicator
Verified Upwork contract5.0
LogoArena · Frontend / Full Stack Developer
“Wow. It's been an absolutely incredible experience working with Shubham. Beyond the fact that he is a top developer and true expert in his field, he is also a great person and extremely easy to work with. Our project required both creative and logical thinking, and has multiple levels of complexity. Throughout all stages of our project, Shubham was able to help us plan, research, and execute our vision at the highest level, with patience, and attention to even the smallest of details. In fact, we haven't stopped working with Shubham, we're continuing straight on to another project with him. Thanks a lot Shubham! Looking forward to what's next!”
$16,399
1,754 hours · Long-term · Collaborative · Detail oriented · Committed to quality
Verified Upwork contract5.0
Hiding Elephant · Full Stack Development
“This was our second project working with Shubham, and just like the first, we had a fantastic experience working with him throughout the entire project! Both Shubham's skills and personality fit in perfectly with our company's culture and vision, and we're excited to continue working together on our new projects. Thanks Shubham!”
$3,345
335 hours · Repeat client · Endorsed · Collaborative
If this matches what you're looking for, the next step is simple: send me your project details on Upwork and we can talk through scope and approach.
Send me a message on Upwork04How I work
I lead the delivery, not just the code.
You get a hands-on technical partner who turns ambiguity into decisions and keeps the build moving through production.
Architecture before velocity
I plan the data, integrations, system boundaries, and deployment path before complexity gets expensive.
Questions early
I remove ambiguity upfront and turn business requirements into concrete technical decisions.
Visible progress
You get clear updates on what is done, what is next, and what needs a decision.
Production delivery
I handle the path through QA, deployment, maintainability, and ongoing delivery, not just local code.
05Delivery approach
Sprint planning and AI-assisted development.
Structured for faster implementation, clearer scope, and nothing left to assumption.
From architecture through production: every phase planned, scoped, and tested.
01
Architecture first
Design the best-fit architecture from your requirements: data model, integrations, infra, and delivery path mapped before build starts.
02
Feasibility & R&D
Every component that may need research is identified upfront. No hidden assumptions, no surprises mid-build.
03
Phased scoping
Projects split into phases, then milestones per phase, so scope, cost, and progress stay transparent.
04
Sprint delivery
Work runs in planned sprints with AI-assisted development for faster, more consistent implementation.
05
Security & compliance
Auth, data isolation, access control, and compliance considerations built in, not bolted on at the end.
06
Testing & QA
Automated testing with Vitest and Cypress, plus manual QA, so production releases are reliable.
06Capabilities
What I can help you build.
Capabilities organized around outcomes, not a wall of technology logos.
Production AI SaaS
Multi-tenant platforms
Production MVP · direct or POC-first
AI Agent SaaS with native workflow builder
Multi-channel AI agent SaaS
Custom CRMs & portals
Internal tools & dashboards
CRM & API-connected SaaS
Supabase-backed SaaS products
Deployment & infrastructure
Stripe billing & subscriptions
Custom RAG · LangChain & Vercel AI SDK
Typical production stack
Tools I ship with most often, not a fixed menu.
Product
Next.js · React · TypeScript
Backend & data
Node.js · Python / FastAPI · PostgreSQL · Supabase · Prisma · Redis
AI & agents
OpenAI · Claude · Gemini · LangChain · Vercel AI SDK · RAG · MCP
Infra & integrations
Docker · Stripe · REST APIs · Webhooks
Technology is chosen based on project scope: whatever best fits the build. Other tools and frameworks are used when the project requires them.
Next step · Back on Upwork
Ready to talk through your project?
You came here from my proposal. This page was the proof. If what you saw builds confidence, send me your project details on Upwork and we can discuss scope, approach, and next steps.
Send me a message on UpworkShubham Kashyap · Full-Stack AI DeveloperTop Rated Plus · 100% Job Success