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Custom SaaS Development

SaaS Development Company Behind 1,000+ Shipped Projects

SaaS development services for B2B, marketplace, and vertical products, from MVP and SaaS app development to rebuilding, scaling, and optimizing existing platforms.

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WV
WorldVia
Travel host agency · built by RapidDev
We built WorldVia's entire technology backbone, so advisors onboard, publish websites, find clients, and get paid all in one place.
89,000+
total users on the platform
138
countries served
4.9
Clutch rating
1,000+
Happy partners
20+
Countries served
220+
Team members
SaaS development services

SaaS development services across the entire product lifecycle

From the first MVP to a mature platform, we cover the whole SaaS product, not just the codebase.

SaaS MVPs
A lean first release that validates the idea, onboards real users, and gives you a product worth pitching.
Scope my MVP →
Multi-tenant platforms
Account structures, role-based permissions, and admin tooling built to onboard your next thousand customers.
Plan a SaaS build →
Billing & account workflows
The plumbing behind subscriptions, invoicing, and account management, so your SaaS runs on systems, not spreadsheets.
Map my workflows →
Dashboards & reporting
Live, readable dashboards that turn raw product data into a reason customers keep logging back in.
Design a dashboard →
Rebuilds & replatforming
Move off a stack you've outgrown without breaking the features and workflows customers already rely on.
Plan a rebuild →
AI agents & automation
Agents and automations woven directly into the product, doing the work your users or team shouldn't have to.
Explore AI agents →
Proof

Outcomes we've shipped.

Not just code delivered, business problems solved, for funded founders and platform teams scaling past their first version.

MarketplaceNew Build

BrewPub Designs launched a vetted marketplace to 700+ users in 5 months.

A two-sided marketplace connecting bars, restaurants, and pubs with vetted artisans, built end to end.

BD
BrewPub Designs
Custom hospitality decor marketplace
What we built

An end-to-end two-sided marketplace, not a generic template: separate buyer and seller experiences, a catalog and checkout with staged payments, plus an admin console and a structured dispute-resolution workflow.

700+ users99.9% uptime<24hr disputes
AI CRMFitness

4Select cut lead response from hours to under 5 seconds.

An AI-first CRM that replaced manual lead handling for over 50 fitness businesses.

4S
4Select
AI-first CRM for fitness
What we built

An instant AI WhatsApp agent that qualifies and books leads 24/7, a multi-cycle call-routing engine with up to 40 touchpoints per lead, and real-time AI sales coaching that scores every call.

50+ businesses<5s responseThousands of leads/mo
Mobile AppRebuild

Urfuture cut load times 50% and shipped on deadline.

A struggling job-search platform, rebuilt and optimized under intense time pressure.

UF
Urfuture
Career-matching platform
What we built

Rebuilt core job-matching and personalized recommendations, cut load times by 50%, fixed 95% of critical bugs, and delivered iOS and Android on the revised deadline.

50% faster95% bugs fixedTop 100 UK apps
Industries

SaaS development built for your industry

The same senior team, applied to the compliance, integrations, and edge cases each industry actually runs into.

B2B SaaS
  • Multi-tenant architecture & role-based permissions
  • Subscription billing & usage metering
  • API-first integrations with the tools your buyers already use
Marketplaces
  • Two-sided marketplace logic & matching
  • Split payments & payout routing (Stripe Connect)
  • Trust, ratings & dispute-resolution workflows
PropTech
  • Investment calculators & underwriting tools
  • Listing aggregation & scraper infrastructure
  • MLS / IDX integrations
EdTech
  • LMS & virtual classroom integrations
  • Course & content management systems
  • Student data handling & compliance
FinTech
  • Payment processing & ledger systems
  • Cybersecurity built for financial platforms
  • Fintech app architecture & performance optimization
HealthTech
  • EMR / EHR integration
  • Telehealth platform strategy
  • Patient data security & HIPAA compliance

Custom SaaS development built around your business

Off-the-shelf software forces your business into someone else's workflow. We build SaaS platforms around your users, operations, business model, and growth plans.

Book a SaaS Strategy Call
Custom architecture
Designed around your product and scaling requirements.
Custom workflows
Business logic specific to your users and operations.
Third-party integrations
Connect your SaaS with existing tools and data.
Flexible development
Launch a new product or extend your existing platform.
Why teams choose us

Why companies choose RapidDev for SaaS development

More than a development team. We bring the product, engineering, and SaaS experience to take your platform from idea to launch, and beyond.

01 — SaaS Experience
Built by a team that knows SaaS
We've shipped SaaS products with subscriptions, multi-tenant architecture, dashboards, permissions, integrations, and the workflows real customers expect.
02 — Proven Delivery
1,000+ projects shipped
From MVPs to established platforms, our team has helped companies build, launch, and improve digital products across industries.
03 — Full Product Team
One team for the whole product
Product strategy, UX/UI, development, QA, and DevOps work together from the first release through ongoing development.
04 — Built to Scale
Think beyond the MVP
We build the first version with what comes next in mind, more customers, more features, more integrations, and more data.
05 — Your IP
Your platform. Your code. Your IP.
The code, design, and product IP belong to you. Your SaaS business is built on technology you control.
06 — Faster Execution
Senior engineers, AI-assisted speed
Get an experienced product and engineering team without spending months recruiting, accelerated by AI-assisted development.
SaaS Platform Development

Everything your SaaS platform needs to run and scale

From authentication and subscriptions to integrations, analytics, and AI, proven SaaS foundations that let us focus on what makes your product unique.

Authentication & user management

Sign-up, sign-in, and account handling covered from day one, so your team's time goes into the product, not infrastructure.

  • Email/password, SSO & social login
  • Multi-factor authentication
  • Password reset & account recovery
  • User profiles & settings
  • Roles & permissions
  • Session management & audit logs

Billing & subscriptions

Pricing, trials, and recurring billing wired in so revenue and access always stay in sync.

  • Subscription plans & pricing tiers
  • Free trials & discount codes
  • Stripe & other payment gateways
  • Upgrades, downgrades & prorated billing
  • Invoices, receipts & dunning
  • Usage-based & metered billing

Admin & back-office

The internal tooling your team needs to run day-to-day operations without duct tape.

  • User & account management
  • Content & configuration management
  • Customer support & impersonation tools
  • Reporting & operational dashboards
  • Audit logs & admin permissions
  • Bulk actions & data exports

Dashboards & analytics

Reporting that turns the data inside your product into something customers actually act on.

  • Custom charts & visualizations
  • Filters, drill-downs & saved views
  • Exports to CSV, PDF & email
  • Scheduled reports & alerts
  • Data warehouse connections
  • Embedded white-label analytics

Integrations & APIs

Connections to the tools your customers already run, plus public APIs partners can build on.

  • REST & GraphQL APIs
  • Webhooks & event subscriptions
  • OAuth & third-party app authorization
  • Native integrations (Slack, HubSpot, Salesforce)
  • Zapier & iPaaS support
  • SDKs & developer docs

AI & automation

LLM-powered features and agents that put what's now possible to work inside your product.

  • LLM integration (OpenAI, Anthropic, etc.)
  • Retrieval-augmented generation (RAG)
  • Agents & workflow automation
  • Embeddings & semantic search
  • Prompt engineering & evaluation
  • Cost & rate-limit management
Testimonials

What clients say after the build ships

Verified reviews from RapidDev clients on Clutch, where the team holds a 4.9 rating across 104 reviews.

★★★★★

"RapidDev's work quality is excellent. I'm blown away by the product."

SC
SaaS company
Payment executive · verified on Clutch
★★★★★

"They don't just understand the platform, they know how to push its limits to build high-quality, scalable products."

CP
Coaching platform
Executive · verified on Clutch
★★★★★

"Despite being in a different part of the world, their project management made the distance feel non-existent."

LM
Logistics marketplace
Founder · verified on Clutch
FAQ

Common questions about SaaS development

The things most founders and product teams ask before starting a project.

How much does custom SaaS development cost?

Cost depends on the scope of the platform, its complexity, the integrations required, and the architecture needed to support it. A lean MVP and a multi-tenant enterprise platform aren't priced the same way. It also depends on whether we're building something new or working within an existing codebase. The clearest way to get an accurate number is to walk us through the project. Book a strategy call and we'll put together an estimate based on what you're actually building.

How long does it take to build a SaaS product?

Timelines vary with the same factors that drive cost: scope, complexity, the number of integrations, and whether we're building from scratch or extending an existing platform. A focused first release moves faster than a full multi-tenant build with billing, permissions, and third-party integrations baked in. We'll give you a realistic timeline once we understand what you're building. It's part of the scoping conversation.

Can you work with an existing SaaS platform?

Yes, a large share of our work is exactly this. Whether you need performance and infrastructure improvements, new features, a rebuild off a stack you've outgrown, or help getting an existing platform ready to scale, we work within what's already there rather than starting over by default.

What SaaS development services do you provide?

MVP development, custom SaaS applications, and full platform development for B2B, marketplace, and vertical products. On top of that: subscriptions and billing, admin and back-office tooling, dashboards and analytics, third-party integrations and APIs, AI features and automation, and modernization or rebuilds for platforms that have outgrown their original stack.

Do you provide ongoing development after launch?

Yes. Development is one part of a larger engagement, we stay close to the outcome after the product ships, not just the release date. Most SaaS platforms keep evolving after launch, and we continue building alongside your team as new features, integrations, and scale requirements come up.

Who owns the source code and IP?

You do. The code, design, and product IP belong to you, your SaaS business is built on technology you control, not something we license back to you.

Ready to build or scale your SaaS product?

Tell us what you're building, rebuilding, or looking to improve. We'll help you define the right approach and turn it into a scalable SaaS platform.

1000+ products shipped • 220+ engineers • SaaS expertise since 2018