Senior engineers who have shipped products used by thousands of active users — now building yours. Multi-tenant architecture, subscription billing, role management, and API platforms. Built to last, not just to launch.
Discuss Your Project →From zero-to-one MVPs to multi-tenant enterprise platforms — we build SaaS products that can grow with your business without requiring a full rewrite at every scale milestone.
Row-level security, schema isolation, or database-per-tenant — we design multi-tenancy properly from the data layer up, so you never face a painful migration later.
Contact management, pipeline tracking, activity logging, email integration, and reporting — built around your specific sales process rather than forced into a generic template.
Inventory management, purchase orders, fulfilment workflows, supplier management, and cross-department reporting — custom-built for your exact operational model.
Onboarding workflows, leave management, performance reviews, org charts, document management, and payroll integrations for growing teams.
Task management, resource allocation, Gantt-style timelines, time tracking, client portals, and project reporting tailored to your agency or service delivery model.
Developer-facing APIs with key management, rate limiting, usage tracking, OpenAPI docs, webhook delivery, and OAuth — everything needed to build a platform business.
Custom domain support, per-tenant branding, branded email, partner configuration portals, and reseller billing — white-label architecture built in from day one.
Stripe Billing integration: plan tiers, metered billing, usage caps, trial management, dunning, invoices, upgrade/downgrade flows, and a customer billing portal.
Bubble, Webflow, and similar tools are excellent for simple workflows and early validation. But they hit hard ceilings around performance, custom business logic, and data portability. Investors and acquirers also discount no-code platforms significantly. When you are ready to build something that can scale and be valued properly, you need real engineering.
Big agencies staff SaaS projects with mixed teams where junior engineers do most of the implementation. You pay senior rates for junior output, and the architecture decisions made in week two haunt you for years. Every engineer on your project at The Yellow Labs has 12–15 years of experience — architecture decisions are made by people who have seen what goes wrong at scale.
A SaaS product needs consistent architecture across frontend, backend, auth, billing, and devops. Freelancers working on different parts without a unified design vision create integration problems, inconsistent security posture, and code that is expensive to maintain. Our studio works as a single coordinated team with one coherent technical approach.
SaaS projects often start as an MVP build and grow into long-term product scaling engagements. See the full set of capabilities we offer, read about how we work, or learn more about the team behind The Yellow Labs.
We bill hourly from $40/hr. A focused SaaS MVP — core feature set, multi-tenant auth, Stripe billing, and basic admin — typically runs 200–400 hours. A more complete product with role management, onboarding flows, analytics, API access, and white-label support runs 400–900 hours. We scope upfront and report hours weekly throughout the engagement.
Single-tenant means each customer gets their own isolated deployment (own database, own infrastructure). Multi-tenant means all customers share infrastructure with logical data isolation. Multi-tenant is cheaper to operate at scale and easier to maintain — it is the right default for most SaaS products. We design multi-tenant data isolation carefully: row-level security in PostgreSQL, schema-per-tenant, or separate databases, depending on your compliance and performance requirements.
Yes — and we do this properly. Stripe Billing integration with plan tiers, usage-based billing, annual vs monthly pricing, trial management, upgrade/downgrade flows, dunning for failed payments, invoice generation, and a customer billing portal. Metered billing and seat-based pricing are also areas our engineers have built before. Getting SaaS billing right from the start saves significant engineering rework later.
A tight, well-scoped SaaS MVP can be production-ready in 10–16 weeks. This assumes clear requirements, fast feedback cycles, and a disciplined feature scope. Products with complex data modelling, third-party integrations, or regulatory requirements take longer. We are firm believers in shipping a real MVP first and expanding based on what users actually use.
Yes. White-label architecture requires careful design: custom domain support, per-tenant branding (logos, colours, typography), branded email sending, and often custom onboarding flows per partner. We have designed white-label systems that allow non-technical partners to configure their own branded instance without engineering involvement.
We choose stacks based on the product requirements, not habit. Common choices: Next.js or Remix for the frontend, Node.js or Python for APIs, PostgreSQL as the primary database, Redis for caching and queues, deployed on AWS or Vercel. For real-time features we use WebSockets or Server-Sent Events. We avoid over-engineering early-stage products — a well-designed monolith is usually the right starting point.
Yes. Developer-facing APIs with API key management, rate limiting, versioning, usage tracking, and OpenAPI documentation are a standard part of platform-focused SaaS products. We also build webhook delivery systems, event streaming, and OAuth flows for third-party integrations.
Whichever capability you came here to read about, the way we engage usually depends on which stage your product is in. Pick the path that matches yours.
Have an idea that needs validating? Prove technical feasibility first.
Ready to put a real product in front of users? Build the smallest version that proves the market.
MVP is live and learning? Evolve it with continuous development.
Book a free 30-minute call. We'll walk through your product vision, talk through architecture options, and give you a realistic scope estimate for your MVP.
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