Senior Custom Application Development ConsultantsDevelopment Consultants
We build production-grade applications with senior engineers only. 200+ products shipped in 50+ countries.
IRPR provides senior custom application development consultants who build web apps, mobile apps, and AI chatbots using React, Node.js, Python, and AWS. We design architecture, write code, and ship production systems that handle compliance like HIPAA and PCI-DSS.
Every engagement delivers a working product in 8 to 12 weeks with fixed pricing between $80,000 and $250,000. You get source code, CI/CD pipelines, and documentation. No hourly billing. No scope creep.
We work with CTOs who need to launch a SaaS MVP without hiring a full team, with founders who need a custom app built from scratch in 3 months, and with enterprise IT directors who require senior custom application development consultants for a compliance-heavy project.
Types of software we ship.
SaaS Platform Development
Build multi-tenant SaaS platforms with Stripe billing, user roles, and automated provisioning on AWS.
Enterprise Web Application
Develop internal dashboards and portals with role-based access, audit logs, and integrations with Salesforce or SAP.
Mobile App Development
Create native iOS and Android apps using React Native or Flutter with offline sync and push notifications.
AI Chatbot Development
Design conversational AI chatbots using GPT-4 and RAG pipelines for customer support and lead qualification.
Custom Ecommerce Platform
Build headless ecommerce stores with Shopify or custom cart engines, integrated with payment gateways like Stripe.
Data Analytics Dashboard
Develop real-time analytics dashboards with Apache Kafka, PostgreSQL, and Metabase for business intelligence.
Cloud Infrastructure Setup
Design and deploy scalable AWS or Azure infrastructure with Kubernetes, Terraform, and CI/CD pipelines.
Legacy System Modernization
Migrate monolithic .NET or Java apps to microservices on Docker and AWS ECS with zero downtime.
We build for every business type.
Technology and SaaS
Healthcare and Life Sciences
Finance and Insurance
Ecommerce and Retail
Professional Services and Real Estate
Why senior custom application development consultants matter
Senior consultants bring deep technical experience that junior teams cannot match.
A senior custom application development consultant has shipped at least 10 production systems. They know how to design for scale, security, and maintainability. At IRPR, every consultant has 8+ years of experience and has worked with clients in 50+ countries.
When you hire senior consultants, you avoid costly rewrites. They choose the right stack - React, Node, Python, AWS - from day one. They set up CI/CD, monitoring, and error tracking before writing business logic. This saves 30% to 50% of total project cost compared to hiring junior developers.
Generic agency vs senior custom application development consultants
Not all consultants deliver the same quality. Here is the difference.
Generic agencies staff projects with junior developers who learn on your dime. They use hourly billing, so every delay costs you more. They hand off code with no documentation and no CI/CD.
IRPR assigns senior custom application development consultants from day one. We give you a fixed price, a 12 week timeline, and full ownership of the code. We set up Sentry, GitHub Actions, and Terraform before writing business logic.
- Junior developers on your project
- Hourly billing with no cap
- No CI/CD or monitoring setup
- Code delivered without tests
- Scope creep with every change
- No post-launch support included
- Senior engineers with 8+ years experience
- Fixed price from $80K to $250K
- CI/CD with GitHub Actions and Terraform
- Full test coverage and documentation
- Scope locked in Roadmap phase
- 30 days of post-launch support
How our senior custom application development consultants work
We follow a four-phase process that guarantees delivery in 12 weeks.
Every engagement starts with a 2 week discovery sprint. We map your requirements, choose the tech stack, and produce a fixed price quote. No surprises.
Then we build the product in 8 to 10 weeks with weekly demos. You see working software every Friday. We handle deployment, monitoring, and handover.
What ships with every engagement
You get a complete production system, not just code.
When you hire IRPR, you receive everything needed to run and maintain the application. No hidden costs. No missing pieces.
Every deliverable is tested, documented, and deployed. Your team can take over immediately with no ramp-up time.
- Source code in your private GitHub repo
- CI/CD pipeline on GitHub Actions
- Sentry error tracking and alerts
- Terraform infrastructure as code
- PostgreSQL or MongoDB database schema
- REST API documentation (OpenAPI 3.0)
- Unit tests with 80%+ coverage
- Deployment runbook and architecture diagram
- Admin dashboard with user management
- 30 days of post-launch support
What we ship in this practice.
SaaS MVP for a B2B analytics platform
Built a multi-tenant analytics dashboard with React, Node.js, and PostgreSQL. Integrated Stripe billing and Metabase for reporting. Reduced time-to-market by 16 weeks compared to in-house development. Tech stack: React, Node.js, PostgreSQL, Stripe, Metabase.
HIPAA-compliant telemedicine app
Developed a video consultation platform with Twilio and AWS KMS for encryption. Achieved HIPAA compliance in 8 weeks. Handles 10,000+ consultations per month. Tech stack: React Native, Node.js, Twilio, AWS KMS, PostgreSQL.
PCI-DSS compliant payment gateway
Built a custom payment processing system with tokenization and 3D Secure. Passed PCI-DSS Level 1 audit on first attempt. Processes $5M in transactions monthly. Tech stack: Python, Django, Stripe Connect, AWS, PostgreSQL.
MLS-integrated real estate platform
Created a property search engine with real-time MLS feeds using RETS and RESO APIs. Scrapes 500,000+ listings daily. Reduced manual data entry by 40 hours per week. Tech stack: Node.js, React, PostgreSQL, Redis, RETS API.
Custom ecommerce platform for luxury goods
Built a headless storefront with Shopify Plus integration and custom cart logic. Handles 200+ orders per day with 99.9% uptime. Tech stack: Next.js, Shopify Storefront API, Stripe, AWS Lambda.
AI chatbot for customer support
Developed a GPT-4 powered chatbot with RAG pipeline using Pinecone vector database. Reduced support ticket volume by 35% in 3 months. Handles 5,000+ conversations per week. Tech stack: Python, GPT-4, Pinecone, FastAPI, React.
Why teams hire us.
Senior engineers only
Every consultant at IRPR has 8+ years of experience and has shipped at least 10 production systems. We do not staff juniors. You get a senior custom application development consultant from day one.
Fixed price with no hourly billing
You get a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. The price is locked before we write a line of code.
12 week delivery guarantee
We ship working software in 8 to 12 weeks. 98% of our projects deliver on time. If we miss the deadline, you get 10% off the final invoice.
Full code ownership
You own all source code, documentation, and infrastructure. There is no licensing fee, no vendor lock-in. You can take the code to any team after launch.
Compliance built in from day one
We design for HIPAA, SOC 2, PCI-DSS, and FERPA before writing code. Our consultants have built systems that pass audits on the first attempt.
Global team with US overlap hours
Our consultants work in time zones that overlap with US business hours. You get real-time communication via Slack and weekly video demos. No async-only delays.
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.