01
FIG 01 · SaaS Development
SaaS development company: from first release to scale
Product design, multi-tenant architecture, billing, AI features and cloud operations from one team. The same team that designed and engineered Kenerate AI, a credit-based platform with 200+ AI models.
See how it works
FIG 02 · Quick answer
What does a SaaS development company do?
A SaaS development company designs, builds and runs subscription software delivered in the browser. Elgrith handles product discovery, UX, multi-tenant architecture, sign-in and roles, Stripe billing, APIs, AI features, cloud deployment and support for US, UK and Indian founders. We also designed and engineered Kenerate AI, a credit-based AI platform with 200+ models.
- Projects delivered since 2015
- 1,000+
- Clients served
- 250+
- AI models in Kenerate AI, our flagship build
- 200+
- Your code and IP
- 100%
FIG 03 · Why it matters
A stack chosen for hiring, not for hype.
We build SaaS on the tools most developers already use, so your product is easy to staff, hand over and extend. Figures from the Stack Overflow Developer Survey 2025 and W3Techs.
01
48.7%
Of developers worked with Node.js
Node.js was the most used web technology in the 2025 survey: 48.7% of all respondents did extensive work with it in the past year.
Source: Stack Overflow Developer Survey 2025(opens in a new tab)02
44.7%
Of developers worked with React
44.7% of all respondents did extensive work with React, and 20.8% with Next.js, the React framework we use for most SaaS front ends.
Source: Stack Overflow Developer Survey 2025(opens in a new tab)03
6.0%
Of all websites use React
React is used by 8.0% of the websites whose JavaScript library W3Techs can detect, which is 6.0% of all websites.
Source: W3Techs, 20 Oct 2026(opens in a new tab)
FIG 04 · Architecture
Multi-tenant or single-tenant SaaS?
Multi-tenancy means one application serves many customer accounts (tenants), with each tenant’s data kept separate. Most SaaS products start multi-tenant; some enterprise deals need more isolation. Here is how the options compare.
| Shared database (row-level isolation) | Schema or database per tenant | Single-tenant deployment | |
|---|---|---|---|
| Best for | Most new SaaS products and self-serve plans | B2B plans with stricter data separation | Enterprise customers and data-residency deals |
| Isolation | Tenant ID on every row, enforced in queries and policies | Separate schemas or databases per customer | A separate app and database per customer |
| Running cost | Lowest: one stack to host and patch | Medium: more databases to manage | Highest: one stack per customer |
| Upgrades | One release reaches every tenant | One release, with per-tenant migrations | Rolled out customer by customer |
| When not to use | When a contract demands physical separation | When you have thousands of small tenants | When you sell low-touch, self-serve plans |
Many products mix them: a shared multi-tenant core, with isolated deployments for the few customers who need them.
Starting smaller? See MVP developmentFIG 05 · What you get
SaaS development services
Eight services across the whole product, from the first clickable prototype to a multi-tenant platform that scales with your customers.

02
SaaS MVP to v1
03
Multi-tenant architecture
04
Subscription and usage billing
05
AI features in SaaS
06
Integrations and public APIs
07
SaaS app development for mobile
08
DevOps, scaling and support
Deliverables
12
deliverables, in writing
FIG 06 · Under the hood
What a SaaS platform has to get right
Every SaaS shares the same core systems. We design them together, so sign-in, billing and data stay in sync as you grow.
- Sign-up and SSO
- Tenant accounts
- Roles and permissions
- Usage events
- Stripe Billing
- Public API and webhooks
- AI models
- Analytics
Onboarding
- What it covers
- Sign-up, invites, workspaces and first-run setup
- Why it matters
- Activation decides whether a trial becomes a customer
Tenant isolation
- What it covers
- Tenant IDs, row-level policies, scoped API keys
- Why it matters
- One customer must never see another’s data
Metering and credits
- What it covers
- Usage events, credit balances, plan limits
- Why it matters
- Usage pricing only works if every unit is counted
Billing and dunning
- What it covers
- Plans, trials, upgrades, failed-payment retries, tax
- Why it matters
- Failed payments quietly turn into churn
Audit logs
- What it covers
- Who changed what, and when, per tenant
- Why it matters
- Enterprise buyers ask for it in security reviews
AI features
- What it covers
- LLM features, RAG and agents, with per-account limits
- Why it matters
- Model costs must map to what each plan pays
FIG 07 · Flagship build
Proof: Kenerate AI, a SaaS we designed and engineered
Kenerate AI is an all-in-one AI image and video studio that customers sign in to and pay for with credits. It is the kind of multi-model, credit-billed SaaS we build for clients.
- One app, one login and one credit balance across 200+ AI models
- Credits never expire
- 23+ studios and tools, with up to 4K output
- MCP and CLI access inside Claude, ChatGPT, Cursor and 19+ AI apps

The idea: 15 apps, 15 logins, 15 bills become one studioDesigned and engineered by Elgrith
- AI models in one app
- 200+
- Studios and tools
- 23+
- Maximum output
- 4K
- Guides
- 500+
FIG 08 · Buyer’s checklist
How to choose a SaaS development company
Seven questions to ask any SaaS partner, us included, before you sign.
07principles
A shipped SaaS you can log into
Ask for a live product you can sign up to and use, not just screenshots.
See Kenerate AIMulti-tenant experience
Ask how they isolate tenant data and handle roles, SSO and audit logs.
Billing experience
Ask about plans, trials, metering, credits, dunning and tax, not just a checkout button.
IP ownership in writing
Your contract should assign the code, designs and IP to you. Ours does.
Security practices
Ask about access control, secrets, backups, dependency updates and how they handle a security review.
Post-launch support
Launch is the start. Ask who monitors, patches and ships features afterwards.
Support and maintenanceTime-zone overlap
Ask when you can talk live. Our New Delhi day overlaps the UK morning, and we agree a regular call window for US teams.
FIG 09 · Process · 6 steps
Prototype, launch, then scale
Each phase has its own written scope and fixed quote, and you see working software at every sprint demo. You own the code and IP.
- Step 01
Discovery
We map your users, plans, roles and integrations, and agree what v1 must do. You get a written scope and a fixed quote for the next phase.
- Step 02
Clickable prototype
A tested prototype of the key flows: sign-up, onboarding, the core job and upgrade. You can show it to users and investors.
- Step 03
MVP
The first paid release: accounts, tenants, billing and the core feature, deployed to cloud accounts registered to your business.
- Step 04
Beta
Real customers use the product. We watch analytics and feedback, fix what slows them down and harden security.
- Step 05
v1
Roles, SSO, integrations, public API and the features your beta proved you need.
- Step 06
Scale
Monitoring, performance work, AI features and feature sprints as your customer base grows.
FIG 10 · What you get
Everything included
Written into your fixed quote, so you know exactly what you are paying for before work starts.
12items
- Product discovery and written scope
- Fixed quote for each phase
- Clickable prototype and UI design system
- Multi-tenant back end with roles and permissions
- Stripe Billing with plans, trials and metering
- Admin console for your team
- Public API, webhooks and integrations, where needed
- AI features with per-account usage limits, where needed
- CI/CD, monitoring and backups
- Deployment to your own cloud accounts
- Analytics on activation and usage
- Full source code, documentation and IP
FIG 11 · Tech & tools
The tools behind the work
Proven, well-supported tools, chosen for your project and set up in accounts your business owns.
- React
- Next.js
- TypeScript
- Node.js
- Python
- PostgreSQL
- Redis
- Stripe Billing
- Auth.js
- Clerk
- Amazon Cognito
- Vercel
- AWS
- Cloudflare
- OpenAI
- Anthropic Claude
- Open-weight models
- Model Context Protocol
FIG 12 · Who it’s for
SaaS for founders, scale-ups and agencies.
One team for product design, engineering, AI and cloud, with client partners in New York and London and engineering in New Delhi.
3 audiences
Founders
From idea to paying customers.
Discovery, prototype and MVP on production-grade code, so your first release doesn’t have to be thrown away.
- Clickable prototype before the build
- Billing from the first release
- Analytics on activation and churn
- Code in your repository from day one
Scale-ups
Rebuild, extend or add AI.
Replatform a legacy app, add enterprise features or ship AI your customers pay for, without stopping the roadmap.
- Code audit before any rebuild
- SSO, SAML and audit logs
- AI features with usage limits
- Performance and scaling work
Agencies
White-label SaaS for your clients.
We design and build under your brand for your clients, with unbranded deliverables and your team leading the relationship.
- Your brand on every deliverable
- NDA before discovery
- Fixed quote per phase
- Handover your team can run
FIG 13 · Working with us from the USA and UK
Built in New Delhi. Run on your hours.
Every project gets a point of contact in New York or London and an engineering team in New Delhi. Here is how today’s working days line up, live.
New York
North America
--:--ET
New Delhi team Your working day- Shared working time
- ≈ 3 hours today
- New Delhi is
- 10.5 h ahead
- Live calls, your time
- 9 a.m. to 12 p.m. ET
London
UK & Europe
--:--UK
New Delhi team Your working day- Shared working time
- ≈ 4.5 hours today
- New Delhi is
- 5.5 h ahead
- Live calls, your time
- 9 a.m. to 1:30 p.m. UK
Three ways to work together
- 01
Fixed-scope project
A written scope, one fixed price and a dated plan. Suits websites, apps and MVPs.
- 02
Dedicated team
Designers and engineers on your roadmap every month, billed monthly.
- 03
White label
For US and UK agencies: our work, your brand, unbranded deliverables.
Every engagement
- Fixed quote in USD, GBP or INR after a free 30-minute call
- NDA before discovery. You own all code, designs and content
- A working demo every sprint, not status slides
- Reply within one business day, calls inside your hours
Calls on ET or UK hours
FIG 14 · Tech stack
Our SaaS tech stack
Chosen per project, but this is where most of our SaaS builds start, and why.
| Layer | What we use | Why |
|---|---|---|
| Front end | React and Next.js | Fast, SEO-friendly marketing pages and app screens in one codebase |
| Back end | Node.js and Python | Node.js for APIs and real-time features, Python for data and AI work |
| Data | PostgreSQL and Redis | Reliable relational data with row-level security, plus fast caching and queues |
| Billing | Stripe | Subscriptions, usage metering, invoices, tax and dunning without building a billing system |
| Auth | Auth.js, Clerk or Amazon Cognito | Sign-in, SSO and SAML from a proven provider instead of hand-rolled auth |
| Hosting | Vercel, AWS and Cloudflare | Previews for every change, global delivery and room to scale |
| AI | OpenAI, Anthropic and open models | Model-agnostic, so you can switch on quality, cost or data policy |
FIG 15 · Project type
New SaaS, rebuild or AI add-on?
Four common starting points, and when each one fits.
| Best for | Not for | |
|---|---|---|
| Greenfield SaaS | A new product with a validated problem and a clear first customer | An idea nobody has tested yet: start with an MVP |
| Replatforming a legacy app | A product whose old code slows every release or blocks new features | Code that works and only needs new features: extend it |
| Adding AI to an existing SaaS | Features your customers ask for, such as search, summaries or agents | AI added for its own sake, with no plan for usage costs |
| White-label SaaS for agencies | Agencies that want to sell a SaaS build under their own brand | Agencies that need a team on-site with their client |
FIG 16 · Compare
SaaS development company, freelancers or in-house team?
| SaaS development company (Elgrith) | Freelancers | In-house team | |
|---|---|---|---|
| Best for | A full product: design, build, billing, cloud and support | Small, well-defined pieces of work | SaaS as your long-term core team |
| Coverage | Product, UX, engineering, AI, DevOps and SEO | One skill per person | Whoever you hire |
| Time to start | After a free call and a written scope | Fast, if you can find the right people | Months of recruiting |
| Continuity | One team from prototype to scale | Depends on each freelancer | Strong, once hired |
| Ownership | Code and IP assigned to you in writing | Depends on each contract | Yours |
FAQ
Frequently asked questions
Straight answers about SaaS Development with Elgrith.
It designs, builds, hosts and maintains subscription software: product design, a multi-tenant back end, sign-in and roles, billing, integrations, security and scaling. Elgrith covers all of it with one team, from the first prototype to feature sprints after launch.
FIG 17 · Related
Keep exploring
MVP Development
Web, mobile and AI MVPs you ownCustom Software Development
Bespoke platforms, tools & SaaSWeb App Development
Portals, dashboards & internal toolsReact & Next.js Development
Fast React and Next.js front endsAI Development
LLM apps, AI agents & MCPUI/UX Design
Research-led product designCloud & Deployment
Hosting, CI/CD & DevOpsSaaS & B2B SEO
SaaS & Startups
Kenerate AI case study
Our flagship build: 200+ AI models in one studio
Free 30-minute call
Tell us about your SaaS. We’ll scope it with you.
Book a free SaaS scoping call. You get a written scope and a fixed quote for the first phase, and you own everything we build.
connect@elgrith.com+91 96039 20001Custom software development
Pick a day for your call
OpenPick a day. You'll choose a time in your own time zone on the next step.









