Senior B2B SaaS Development DevelopersSenior
Hire senior developers who ship B2B SaaS products in 8-12 weeks. Fixed price, full ownership, no surprises.
IRPR builds B2B SaaS products using React, Node.js, TypeScript, and cloud-native stacks on AWS or GCP. Our senior developers have shipped over 200 SaaS products across 50 countries.
Every project follows a fixed-price model. You get a roadmap in week 2, an MVP delivered in 8-12 weeks, and pricing from $100K to $300K depending on scope. We comply with SOC 2, HIPAA, and PCI-DSS.
Founders and CTOs of funded startups hire us to build their core platform. Product managers at mid-market companies hire us to build internal tools. Enterprise IT directors hire us for multi-tenant SaaS rollouts.
Types of software we ship.
Multi-tenant SaaS platform
Isolated data per tenant with shared infrastructure. We use Postgres row-level security and Stripe for billing.
B2B billing and invoicing system
Recurring billing, usage metering, and dunning. Integrates with Stripe, Chargebee, or Zuora.
Customer portal and dashboard
Embedded analytics with Metabase or custom charts. Real-time data via GraphQL subscriptions.
API product and developer platform
REST and GraphQL APIs with rate limiting, API keys, and developer documentation using Stoplight.
Internal tool and admin panel
Low-code UI with Retool or custom React. Connects to existing databases and APIs.
Subscription management system
Plan changes, proration, upgrades/downgrades. Built with Stripe customer portal or custom logic.
Marketplace platform
Multi-supplier catalog, order management, and commission calculation. Payment split with Stripe Connect.
Compliance and audit system
SOC 2 or HIPAA log capture, access reviews, and automated evidence collection using Drata integration.
We build for every business type.
Healthcare
Fintech
Real Estate
Logistics & Supply Chain
E-commerce & Retail
Why companies hire senior B2B SaaS development developers
Building a B2B SaaS product requires deep expertise in multi-tenancy, billing, and compliance. Here are real metrics from our projects.
Our senior developers have shipped over 200 SaaS products. Average time from kickoff to production MVP is 12 weeks. 98% of projects deliver on time and on budget.
We work with SOC 2 and HIPAA compliant environments. Each project gets a dedicated senior engineer who owns architecture, code, and deployment. No junior developers, no outsourcing.
How senior B2B SaaS development developers differ from generic shops
Most dev shops send junior engineers and bill hourly. IRPR sends a senior developer with a fixed price from day one.
Generic dev shops often assign fresh graduates to your project. They charge hourly and change scope to increase invoices. Code ownership is unclear.
IRPR assigns a senior developer who has shipped at least 10 SaaS products. You get a fixed quote in week 2. Full source code is in your repo from day one.
- Assigns junior or offshore developers
- Hourly billing with no cap
- Scope creep leads to surprise invoices
- No compliance expertise (HIPAA, SOC 2)
- Code hosted on their accounts
- Handoff weeks after launch
- Senior developer with 10+ SaaS ships
- Fixed price from week 2 roadmap
- No scope creep – change is scoped separately
- Built on SOC 2 / HIPAA compliant infrastructure
- Code in your repository from day one
- Full ownership, ongoing support optional
Our process for building your B2B SaaS product
From idea to production in 8-12 weeks. Each phase has a clear deliverable.
We break every project into four phases. You review progress at each step. Changes are easy because we iterate fast.
Senior developers work directly with you. No project managers or sales layers. You talk to the engineer building your product.
What ships with every B2B SaaS project
You don't just get code. You get a production-ready system with all the extras.
Every deliverable includes infrastructure, monitoring, and documentation. Your team can take over immediately.
We use the same tools we trust for our own products. No skimping on observability or security.
- Source code in your private GitHub repository
- CI/CD pipeline with GitHub Actions or CircleCI
- Infrastructure as code (Terraform or Pulumi)
- Sentry error tracking and Datadog monitoring
- PostgreSQL or MongoDB database with migrations
- API documentation (Postman collection or OpenAPI)
- Stripe or Chargebee subscription integration
- SOC 2/HIPAA compliant logging and access controls
- 1 hour of handover training with your team
What we ship in this practice.
Multi-tenant billing platform for a fintech startup
Reduced billing errors by 90% and cut invoicing time from 2 days to 15 minutes. Tech stack: Next.js, Node.js, Stripe, PostgreSQL, AWS ECS.
Patient portal for a telehealth network
Handles 50,000+ patient visits per month. HIPAA compliant with audit logs. Tech stack: React, GraphQL, FHIR API, AWS HealthLake.
Property management SaaS for a real estate firm
Automates lease renewals and rent collection, saving 30 hours per property manager per week. Tech stack: Next.js, Django, Stripe Connect, PostgreSQL.
Inventory management platform for a logistics company
Syncs inventory across 12 warehouses in real time, reducing stockouts by 40%. Tech stack: Vue.js, Node.js, Redis, AWS Lambda.
Learning management system (LMS) for a credentialing org
Supports 10,000 concurrent users during exam season. FERPA compliant. Tech stack: React, Express, MongoDB, AWS CloudFront.
Subscription analytics dashboard for a media publisher
Processes 5 million events daily, enabling churn prediction and retention campaigns. Tech stack: React, Python, Snowflake, Metabase.
Why teams hire us.
Senior engineers only
Every developer has shipped at least 10 SaaS products. No junior or mid-level engineers work on your project. Senior engineers code, architect, and deploy.
Fixed price, not hourly
After the Roadmap phase (week 2), we quote a fixed price. No hourly billing, no surprise invoices. Scope changes are quoted separately with your approval.
8-12 week MVP delivery
We ship a working SaaS product in 8-12 weeks from kickoff. 98% of our projects deliver on time. You get a production-ready MVP with real users.
Full code ownership from day one
All code is written in your GitHub repository. You own everything. We never hold code hostage. You can walk away with the entire product at any time.
Compliance built in
Every project follows SOC 2 and/or HIPAA controls by default. We set up logging, access controls, and audit trails. No retrofitting compliance later.
200+ products shipped globally
We have built SaaS products for clients in 50 countries. Our portfolio includes multi-tenant platforms, billing systems, marketplaces, and more.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.