Next.js & React Server Component Engineering
Harness React Server Components, streaming SSR, and strict TypeScript for high-velocity frontend performance.
FULL-STACK NEXT.JS & REACT ENGINEERING
Custom Web Applications and SaaS Platforms
We build custom web applications, SaaS products, client portals, and business dashboards using modern Next.js, React, TypeScript, and scalable cloud backends.
✓ Direct founder engineering✓ Bi-weekly working builds✓ 100% IP ownership
COMMON BOTTLENECK
Why most projects struggle
Slow web applications with sluggish page loads, poor mobile responsiveness, broken authentication, and unoptimized database queries frustrate users and destroy customer retention.
HOW KENINSULA DELIVERS
What we guarantee in your build
Blazing-fast, accessible, and search-optimized web applications that render in milliseconds, convert visitor traffic, and scale effortlessly as user demand grows.
CORE DELIVERABLES
Everything included in your build.
We deliver complete, production-ready software without hidden gaps or handoff friction.
✓Custom SaaS products, customer portals, and internal operational dashboards
✓Next.js App Router applications with Server-Side Rendering (SSR) and React Server Components
✓Type-safe REST and GraphQL backend API integrations
✓Relational PostgreSQL (Drizzle/Prisma) and Firebase Firestore database architectures
✓Secure authentication, multi-tenant role-based permissions (RBAC), and session management
✓Stripe payment integration (subscriptions, usage billing, checkout, customer portal)
✓Automated cloud deployment (Vercel, Cloudflare, AWS) with CI/CD and edge caching
✓Ongoing maintenance, security updates, and performance scaling
ENGINEERING DEPTH
Specialized capabilities.
Custom SaaS Products & Client Portals
Engineer secure multi-tenant customer portals, administrative dashboards, interactive charts, and CSV/PDF export engines.
Database Modeling & API Backend Integration
Model relational database schemas in PostgreSQL, write type-safe queries, and connect third-party APIs (Stripe, SendGrid, Twilio).
Performance & Core Web Vitals Optimization
Strict image optimization, code-splitting, minimal CSS bundles, and edge caching for sub-second page loads.
TECHNOLOGY STACK:
Next.jsReactTypeScriptNode.jsVanilla CSS / TailwindPostgreSQLFirebaseStripe API
PROJECT FIT
Is this the right engagement for you?
→SaaS startups needing a production-ready web application and client dashboard
→Growing companies replacing spreadsheet-based internal workflows with web software
→Businesses requiring a high-performance marketing platform that ranks high on Google
DELIVERY METHODOLOGY
A clear 4-step path to launch.
Transparent milestones and working builds throughout the engagement.
01
Data Model & User Flows
Define user permissions, database entities, and key user journey hierarchies.
02
Figma UI/UX & Components
Design responsive, accessible visual design tokens and high-fidelity screen mockups.
03
Full-Stack Development
Write type-safe Next.js code connected to secure PostgreSQL or Firebase API endpoints.
04
QA & Cloud Deployment
Lighthouse audits, cross-browser testing, automated CI/CD pipeline setup, and launch.
PROOF OF THINKING
Featured implementation.
LogiFlow Driver & Freight Dispatch
UK Logistics & Fleet Management Startup (Confidential)
A production cross-platform Flutter mobile driver app and backend dispatch gateway engineered to coordinate 200+ commercial freight drivers with real-time GPS route telemetry and offline digital manifest signing.
THE CHALLENGE
Commercial delivery operations relied on paper manifests and manual phone calls. Spotty cellular connectivity in rural transit zones caused missing delivery receipts, 25% delivery status delays, and high administrative overhead.
THE SOLUTION
Designed and engineered an offline-first Flutter mobile application for iOS and Android. Implemented local SQLite caching with auto-retry background synchronization, digital parcel barcode scanning, and instant customer signature capture.
PARTH’S ROLE & TIMELINE
End-to-end product architecture, UI/UX design, Flutter frontend development, and Node.js / PostgreSQL API sync pipeline. · 10 Weeks (MVP to Production Rollout)
+40%Dispatch Efficiency
99.8%Offline Sync Rate
15,000+Monthly Manifests
10 WeeksRelease Timeline
Outcome figures are client-reported or measured during delivery. Identifying assets and links are withheld where confidentiality applies.
“Parth worked directly with our operations dispatch team from day one. We launched on iOS and Android simultaneously without a single blocker or junior handoff friction.”
Marcus T. — Head of Operations, London, UK
ILLUSTRATIVE INTERFACE · CLIENT DATA REMOVED
Route #UK-4820
London Bristol
LIVE TELEMETRY
Manifest StatusSigned (Offline)
GPS Latency< 100ms
DISPATCH SPEED+40% FASTER
Keninsula is intentionally founder-led. Unlike traditional agencies where projects are handed off to rotating junior developers and non-technical account managers, you collaborate directly with the core engineering and design lead.
We bring sharp product judgment, modern mobile and full-stack engineering standards (Flutter, Next.js, PostgreSQL), and rigorous delivery discipline to every build.
No sales layersTechnical discussions directly with Parth Prajapati.
Bi-weekly working demosReal TestFlight and staging builds you can touch and test.
100% IP & NDA OwnershipStrict confidentiality, complete Git repository transfer.
FREQUENTLY ASKED
Web Platforms questions answered.
Have questions about scope, pricing or delivery? Let’s discuss your requirements directly.
Next.js provides the optimal balance of developer velocity, SEO performance through server rendering, and blazing-fast user experience with minimal client-side JavaScript.
Yes. We regularly integrate with existing REST APIs, GraphQL endpoints, SQL databases, and third-party SaaS services like Stripe, HubSpot, and Auth0.
GET STARTED
Tell us about your
web platforms vision.
Share your product goals, required features, and timeline. Parth and the engineering team will review and provide a structured roadmap within one business day.
Direct founder engineering review Strict non-disclosure & IP protection Clear commercial scope and timeline estimate