
- Freelance SaaS developer
- Next.js
- TypeScript
- Node.js
SaaS MVP Development for Founders and Startups
Open for projectsRemote, worldwideReplies within 48 hours
I'm a freelance SaaS developer in India handling SaaS MVP development for founders, startups and agencies worldwide: sign-up, billing, dashboards and the one workflow your users will pay for. I built and shipped Krillo, a live website-audit SaaS, and I'll build yours in Next.js and PostgreSQL, scoped tight, with code you own.
01Overview
How I scope and build your MVP
Most SaaS products share the same shape underneath: a user signs in, gives the app some input, the server does slow work in the background, and the result is saved and shown back to them. Krillo, the website-audit SaaS I built and shipped, follows that shape. You paste a URL, Puppeteer loads the site, more than 200 checks run in the background while progress streams to the screen, results are saved to your account history in PostgreSQL, and you can export a PDF report. That pipeline, not the landing page, is where an MVP succeeds or stalls.
SaaS MVP development is mostly a scoping problem. A first brief is usually a long feature list, and my job on the first call is to find the one workflow people will pay for and move everything else to a later version. The basics still have to be done properly: authentication, a clean database schema, the core workflow, a user dashboard, billing if you charge from day one, and a small admin panel so you can support customers without opening the database. Team seats, granular permissions and extra integrations can usually wait. Multi-tenancy is the exception. If an account will ever hold more than one user, I design the data model for it from the start, because retrofitting it later is slow and risky.
The second decision is who builds it. No-code tools are a fine way to test demand, but products tend to outgrow them once they need custom logic, background jobs or real control over the data. An agency gives you parallel specialists and a project manager. A freelancer gives you a direct line to the person writing the code, so tradeoffs get settled with you on a call instead of through a chain of handoffs. For a focused startup MVP that is often the simpler route, and if your scope genuinely needs a team, I will tell you before you spend anything.
Whoever builds it, you should own it. The repository lives in your GitHub, the app runs on your own Vercel or Railway and database accounts, and payments settle into your own provider account. I stick to widely used tools (Next.js, TypeScript, PostgreSQL with Prisma) so any developer you hire later can pick the code up without a rewrite. Nothing starts until you have approved a written plan and a fixed-scope quote.
02Deliverables
What you get
- 01
Auth and user accounts
Email and password, passwordless email OTP or Google sign-in, with sessions, password resets and roles handled on the server. I've shipped OTP and Google OAuth in production on Maison Rivina, so I know where the edge cases hide.
- 02
The core workflow
The one thing your users pay for, built properly: validated inputs, background jobs for slow work, retries when external services fail, and results stored in PostgreSQL. In Krillo that meant crawling sites with Puppeteer and generating PDF reports.
- 03
Subscription billing
Plans, trials, upgrades and cancellations through Razorpay or Stripe, with webhooks that update account access automatically and server-side checks on every amount. Paid features are gated in one place, not scattered across the codebase.
- 04
Dashboards and admin panel
A dashboard your users understand at a glance, with history, usage, settings and billing in one place, plus a private admin panel where you can look up accounts, change plans and fix problems without touching the database.
- 05
Teams and multi-tenancy
Organizations, invites and roles, with every record scoped to its tenant through a single data-access layer. If teams come later, the schema is ready for them on day one, so adding them is new code, not a data migration.
- 06
Launch and clean handover
Deployment on your own Vercel or Railway account, environment setup, error logging and analytics, plus written handover notes on setup and architecture, so the next developer you hire can pick the project up without me.
03Fit
Is this a fit?
Who this is for
- Non-technical founders with a validated idea who need someone to build the first real version
- Solo founders who want to hire a SaaS developer directly instead of managing an agency
- Agencies that need a freelance SaaS developer to build a client's product alongside their team
- Startups with a half-built app or a no-code prototype that has hit its limits
- Businesses adding a paid tool, customer portal or internal dashboard to what they already sell
Built with
- Next.js
- TypeScript
- Node.js
- PostgreSQL
- Prisma ORM
- Redis
- Tailwind CSS
- Zod
- Razorpay
- Vercel
Not sure it's the right fit? Tell me what you're building and I'll say so honestly.
Send a brief04Process
How it works
- 1
Short scoping call
You tell me the problem, who the users are and what they will pay for. I reply to every enquiry within 48 hours and come to the call with questions, not a sales pitch.
- 2
Written plan and fixed quote
You get a written plan covering the v1 feature list, what is deliberately cut, the data model, the stack, milestones and a fixed-scope quote. Nothing starts until you approve it.
- 3
Design the key flows
Sign-up, onboarding, the core workflow, the dashboard and billing screens get mapped first, from your designer's files or wireframes I put together, so we agree on behaviour before any code.
- 4
Build in short milestones
I build in short milestones, each ending with a staging link you can click through and comment on. You review working software as it grows, not status reports, and the code sits in your repository throughout.
- 5
Launch and iterate
We launch on your accounts with analytics and error logging in place. Post-launch support can be arranged for fixes and the next round of features, guided by what real users actually do.
05Selected work
Live projects I've built

Krillo
An AI website-audit SaaS running 200+ checks across performance, SEO, security, accessibility and UX, with Gemini-powered fixes and PDF reports in minutes.
Visit krillo.tech(opens in a new tab)
Maison Rivina
Custom-coded, full-stack e-commerce for an Indian apparel label: size-level inventory, a Razorpay and COD checkout with coupons, OTP and Google sign-in, reviews and an admin portal.
Visit maisonrivina.com(opens in a new tab)06Why me
Why work with me
I've shipped a real SaaS
Krillo is live with accounts, guest audits, background jobs that stream progress, saved audit history and PDF export. The hard parts of an MVP sit behind the landing page, and I've already built them once.
You talk to the developer
No account manager and no handoffs. The person on your scoping call is the person writing the code, so scope changes and tradeoffs are decided with you directly, in plain English.
Product sense, not just tickets
At Maddworld I help shape product priorities and technical architecture. On your MVP that means I'll question any feature that doesn't earn its place in v1, before you pay for it.
07FAQ
Questions, answered
Still have a question?
Ask me directly. I reply within 48 hours.
How much does it cost to build a SaaS MVP?
It depends on scope, so I quote after a short call rather than guessing. In SaaS MVP development the main cost drivers are how many user roles you need, whether billing and multi-tenancy are in v1, how many third-party APIs or AI features are involved, and how custom the design is. Cutting features is the cheapest lever you have. After the call you get a written, fixed-scope quote, so the price doesn't move unless the scope does.
How long does it take to build a SaaS MVP?
It depends on the scope you approve, and the written plan sets out milestones and a target launch date before any work starts. An MVP built around one core workflow moves much faster than one that tries to ship teams, integrations and custom admin tooling at once. Delays usually come from third-party integrations, unclear requirements and features added mid-build, which is why every milestone ends with a staging link you can review and adjust.
What is the best tech stack for a SaaS MVP?
For most MVPs I recommend Next.js with TypeScript, PostgreSQL through Prisma, and hosting on Vercel, Railway or Render. One language across frontend and backend keeps the codebase small, a relational database fits accounts, plans and permissions, and the tools are common enough that hiring your next developer is easy. I add Redis for queues or caching only when the workload needs it. If you already have a codebase, I'll tell you honestly whether to build on it.
Should I hire a freelancer or an agency to build my MVP?
Hire a freelancer if your MVP is one focused product and you want to work directly with the person building it. Hire an agency if you need several specialists working in parallel from the start. With me there is no project manager in the middle, so decisions are quick and nothing gets lost in handoffs. If your scope truly needs a team, I'll tell you on the call.
Will I own the source code and IP?
Yes, you own all of it. The repository lives in your GitHub account from the first commit, and the app runs on hosting, database and payment accounts in your name. There's no proprietary framework or lock-in, and you get handover notes so another developer or your in-house team can take over whenever you want.
Can you add subscriptions and payments to my SaaS?
Yes. I've shipped Razorpay payments in production on Maison Rivina, with every amount validated on the server. For subscriptions I set up plans, trials, upgrades and cancellations, webhooks that switch access on or off when a payment succeeds or fails, and a billing page where users manage their plan. If most of your customers are outside India, Stripe is usually the better fit, and the same structure applies.
Can you build a multi-tenant SaaS?
Yes. For most MVPs I use a shared PostgreSQL database where every record carries an organization ID, and tenant filtering lives in one data-access layer instead of being repeated in every query. Invites, roles and per-organization billing sit on top of that. Separate databases per customer only make sense when a contract or compliance rule demands it, and that choice belongs in the written plan, not halfway through the build.
What happens after the MVP launches?
You get the code, the accounts and written handover notes, and post-launch support can be arranged if you want me to stay on. That usually covers bug fixes, monitoring and the next round of features based on what real users actually do. If you'd rather move it to an in-house team, the handover notes and a conventional stack make that straightforward.
Can you take over and finish a half-built SaaS?
Often, yes. I start by reading the codebase, running it locally and writing up what's solid, what's risky and what's missing. Then you get a plan and a quote to finish it, plus an honest view on whether any part is cheaper to rebuild than to fix. The same applies to stalled custom code and to no-code prototypes that have hit their limits.
Still have a question?
Ask me directly. I reply within 48 hours.
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