SaaS development services for B2B, marketplace, and vertical products, from MVP and SaaS app development to rebuilding, scaling, and optimizing existing platforms.
Book a SaaS Strategy CallFrom the first MVP to a mature platform, we cover the whole SaaS product, not just the codebase.
Not just code delivered, business problems solved, for funded founders and platform teams scaling past their first version.
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.
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.
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.
The same senior team, applied to the compliance, integrations, and edge cases each industry actually runs into.
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 CallMore than a development team. We bring the product, engineering, and SaaS experience to take your platform from idea to launch, and beyond.
From authentication and subscriptions to integrations, analytics, and AI, proven SaaS foundations that let us focus on what makes your product unique.
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
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
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
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
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
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
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."
"They don't just understand the platform, they know how to push its limits to build high-quality, scalable products."
"Despite being in a different part of the world, their project management made the distance feel non-existent."
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.
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.