\n\n
Full-Stack Web Engineering

Web Applications
That Ship & Scale.

We engineer blazing-fast, accessible web applications using React, Next.js, and Node.js. SaaS dashboards, eCommerce platforms, enterprise portals β€” built for performance, built to last.

Start Your Project β†’ Book Free Discovery Call
200+
Web Apps
β˜…β˜…β˜…β˜…β˜…
4.9 / 5.0
96
Avg Lighthouse
< 2s
Avg Load Time
app/(dashboard)/analytics/page.tsx
import { Suspense } from 'React'
import { MetricsChart, KPIGrid } from '@/components'
 
export const dynamic = 'force-dynamic'
 
export default async function AnalyticsPage() {
const data = await fetchMetrics()
return (
<Suspense fallback={<Skeleton/>}>
<KPIGrid data={data.kpis} />
<MetricsChart realtime />
</Suspense>
)
}
 
// βœ“ RSC Β· SSR Β· TypeScript Β· Suspense
// βœ“ LCP 0.8s Β· CLS 0 Β· FID 12ms
200+
Web Apps Shipped
4.9β˜…
Upwork Rating
96/100
Avg Lighthouse Score
<2s
Core Web Vitals
14
Countries Served
Trusted by StripeShopifyVercelNotionLinearFigmaLoomIntercomSegment
What We Build

Every type of
web app

From pixel-perfect marketing sites to complex multi-tenant SaaS platforms β€” we've built it all. Our engineers pick the right architecture for your scale, not the trendiest one.

CORE STACK
React 18 / Next.js 14App Router, RSC, Streaming
TypeScriptStrict mode, full type safety
Node.js / NestJSREST & GraphQL APIs
PostgreSQL + RedisPrimary DB + caching layer
AWS / Vercel / DockerCloud & containerisation
GitHub ActionsCI/CD & automated testing
πŸš€
SaaS Platforms

Multi-tenant architecture, subscription billing, role-based access, and API-first design.

πŸ›’
eCommerce Stores

Headless storefronts, Shopify custom builds, WooCommerce, and bespoke checkout flows.

πŸ“Š
Internal Tools & Dashboards

Operations portals, admin panels, reporting tools, and workflow automation platforms.

πŸ€–
AI-Powered Web Apps

LLM integrations, RAG systems, AI-assisted UX, and intelligent data processing pipelines.

🌐
Marketing & Content Sites

Next.js or Astro with CMS (Contentful, Sanity), Lighthouse 95+, and Core Web Vitals pass.

πŸ—
Enterprise Platforms

Multi-region, RBAC, audit logs, SSO, WCAG 2.1 AA, and SOC 2-ready architecture.

Services Breakdown

Full-spectrum web engineering

Every layer of the stack, covered. One team, end-to-end ownership.

βš›
Frontend Engineering
React Β· Next.js Β· Vue Β· TypeScript

From pixel-perfect interfaces to complex real-time dashboards β€” we own the full frontend layer.

βœ“ React 18 with Concurrent Features
βœ“ Next.js 14 App Router & RSC
βœ“ TypeScript strict mode always
βœ“ Performance budgets enforced
βœ“ Accessibility WCAG 2.1 AA
βœ“ Storybook component library
βš™
Backend & API Engineering
Node.js Β· Python Β· Go Β· Java

RESTful and GraphQL APIs built design-first, documented thoroughly, and versioned for the long term.

βœ“ OpenAPI-first REST & GraphQL
βœ“ NestJS, FastAPI, Go Chi
βœ“ JWT / OAuth2 / PKCE auth
βœ“ Rate limiting & caching
βœ“ Third-party API integration
βœ“ gRPC for internal services
πŸ—„
Database Engineering
PostgreSQL Β· Redis Β· MongoDB

Schema design, query optimisation, migration management, and caching strategies that actually scale.

βœ“ PostgreSQL schema design
βœ“ Redis caching strategy
βœ“ Database migration scripts
βœ“ Query optimisation & indexing
βœ“ Connection pooling (PgBouncer)
βœ“ Read replica configuration
☁
cloud & DevOps
AWS Β· Docker Β· Kubernetes

Zero-downtime deployments, infrastructure as code, and monitoring so you sleep at night.

βœ“ AWS EKS / ECS / Lambda
βœ“ Terraform infrastructure as code
βœ“ GitHub Actions CI/CD
βœ“ Prometheus + Grafana monitoring
βœ“ Auto-scaling & load balancing
βœ“ Disaster recovery planning
πŸ”
Security Engineering
OWASP Β· SOC2 Β· GDPR

Security is designed in, not bolted on. Every project ships with a security checklist.

βœ“ OWASP Top 10 review
βœ“ Dependency vulnerability scanning
βœ“ CSP headers & HTTPS enforcement
βœ“ GDPR data handling patterns
βœ“ Penetration test preparation
βœ“ SOC 2 control alignment
Technology

The stack behind every project

We're opinionated about tooling β€” we've tried everything, and these are the tools that consistently deliver.

STACK
Frontend
Vue 3 / Nuxt
TypeScript
STACK
Backend
Node.js / NestJS
Python / FastAPI
Go / Chi
Java / Spring Boot
PHP / Laravel
STACK
Database
MongoDB Atlas
Redis
Elasticsearch
SQLite
STACK
AWS (EKS, Lambda)
Docker + Kubernetes
Terraform
GitHub Actions
Vercel / Railway
STACK
Testing
Playwright E2E
Vitest / Jest
k6 Load testing
Testcontainers
Storybook
πŸ€” Which framework is right for your project?
Best for

SaaS, marketing sites, eCommerce, anything needing SEO + full-stack in one codebase. Our default recommendation.

React (Vite)
Best for

SPAs, dashboards, internal tools where SEO is not needed. Faster build times, simpler setup.

Vue 3 / Nuxt
Best for

Teams preferring Vue's progressive approach. Nuxt for SSR when the team knows Vue better than React.

Best for

Large enterprise teams needing strict architecture, NgRx state, and long-term maintainability.

Our Process

Brief to deployed β€” 8 steps

A proven process honed across 200+ web projects. Transparent at every stage.

01
πŸ” Discovery & Scoping
Week 1

We map your goals, users, constraints, and success metrics. Output: technical brief + wireframe spec.

02
πŸ— Architecture Design
Week 1–2

System design: DB schema, API contracts, auth strategy, cloud topology. Reviewed and signed off before code.

03
🎨 Design System
Week 2–3

Component library, tokens, and responsive breakpoints. Figma handoff or full design execution.

04
βš™ Sprint Development
Week 3–12

Two-week sprints with deployed staging demo at the end of each. You test it live, not in screenshots.

05
⚑ Performance Pass
Week 11–12

Lighthouse audit, bundle analysis, image optimisation, and Core Web Vitals validation pass.

06
πŸ” QA & Security
Week 12–13

Full regression test suite, OWASP checklist, accessibility audit, and load testing.

07
πŸš€ Launch
Week 13–14

Blue-green deployment, DNS cutover, monitoring setup, and 30-day stabilisation support.

Portfolio

Projects we're proud of

Start Your Project β†’
FinTech SaaS Featured
$2M+
Day-1 volume
99.99%
Uptime
16 wks
Delivered
FinTech Β· Full-Stack Next.js
Apex Financial β€” Real-Time Trading Dashboard

Multi-tenant SaaS with WebSocket data feeds, portfolio analytics, KYC/AML flows, and PCI-DSS Level 1 compliance β€” shipped in 16 weeks ahead of Series A close.

Next.jsNode.jsPostgreSQLRedisStripeKafkaAWS
Read Case Study β†’
eCommerce
LuxeCommerce Headless Store

Headless Shopify rebuild using Next.js 14 Commerce β€” from 23 to 91 Lighthouse and 342% revenue lift.

342%
Revenue lift
91
Lighthouse
6 wks
Delivery
Next.jsShopifyTailwindVercel
AI / SaaS
NovaBrain AI Knowledge Base

Enterprise RAG system processing 2M queries/day at 97% retrieval accuracy with sub-200ms latency.

2M+
Queries/day
97%
Accuracy
12 wks
Build
ReactFastAPIPineconeOpenAI
AI / SaaS
NovaBrain AI Knowledge Base

Enterprise RAG system processing 2M queries/day at 97% retrieval accuracy with sub-200ms latency.

2M+
Queries/day
97%
Accuracy
12 wks
Build
ReactFastAPIPineconeOpenAI
Healthcare SaaS
HealthBridge Patient Portal

HIPAA-compliant patient portal with appointment booking, telehealth video, and EHR integration.

HIPAA
Certified
3M+
Patients
8 wks
Launch
ReactNode.jsPostgreSQLAWS
Why Nexcode

What sets our web engineering apart

πŸ—
Senior Engineers Only

No juniors, no mid-weight delegation. Every engineer on your project is 5+ years experience, senior by any measure.

⚑
Performance as Pass/Fail

We set Lighthouse 90+ as a non-negotiable acceptance criterion β€” not a target, a requirement. Deployments fail if CWV regress.

πŸ§ͺ
Test Coverage Standard

Unit, integration, and E2E tests as standard deliverable. We don't ship without coverage. No exceptions under deadline pressure.

πŸ“
Architecture Before Code

Full system design β€” schema, API contracts, auth, deployment β€” documented and approved before any code is written.

β™Ώ
Accessibility Built-in

WCAG 2.1 AA from component 1, not added at the end. Keyboard navigation, screen readers, colour contrast β€” non-negotiable.

πŸ”
Weekly Working Demos

End of every sprint, you get a live staging URL to click through. Not a Loom recording β€” a real deployed demo.

πŸ”’
Zero Lock-in Guarantee

100% IP & code transfer. Your repo, your infra, your AWS account. Full documentation so your team can own it the day we hand over.

πŸ“Š
Analytics-Ready Launch

GA4, Mixpanel or Amplitude wired in before go-live. You launch with data, not waiting weeks to set up tracking after.

How we compare
Criteria ✦ Nexcode Typical Agency Offshore Dev Shop Freelancer
Senior engineers only (5+ yrs)βœ“SometimesRarelySometimes
Architecture designed before codingβœ“RarelyRarelyRarely
Weekly working staging demosβœ“MonthlyMonthlyAd hoc
Automated test suite includedβœ“Optional add-onRarelyRarely
Lighthouse 90+ guaranteedβœ“Not standardNot standardNot standard
WCAG 2.1 AA accessibilityβœ“Extra costRarelyRarely
Post-launch 90-day warrantyβœ“VariesRarelyRarely
Full IP & code ownershipβœ“βœ“βœ“βœ“
24hr proposal turnaroundβœ“3–5 days3–5 daysVaries
Pricing

Transparent project pricing

Fixed-price or time-and-materials β€” clear value at every level. No surprise invoices.

Startups & MVPs
Starter
$8,000
Fixed price
βœ“Up to 8 pages / core user flows
βœ“React + Node.js stack
βœ“PostgreSQL database
βœ“Basic auth (JWT)
βœ“Mobile-responsive design
βœ“CI/CD pipeline
βœ“30-day post-launch support
Get Started β†’
Most Popular
Growing Businesses
Professional
$24,000
Fixed price
βœ“Full web application build
βœ“Custom UI/UX design included
βœ“Third-party API integration
βœ“Automated test suite (80%+ coverage)
βœ“Performance pass (Lighthouse 90+)
βœ“AWS deployment + monitoring
βœ“90-day post-launch warranty
Get Started β†’
Scale-ups & Corporates
Enterprise
Custom
Time & materials
βœ“Unlimited scope & team size
βœ“Dedicated senior engineering team
βœ“SOC 2 / HIPAA readiness
βœ“Multi-region deployment
βœ“24/7 monitoring & on-call SLA
βœ“Architecture design sessions
βœ“Ongoing dedicated retainer
Get Started β†’
⏱
Prefer dedicated engineers? Hire our React, Node.js, or full-stack developers from $45/hr β€” available within 48 hours.
Hire a Web Developer β†’ Get Estimate
Client Reviews

What clients say about our web work

β˜…β˜…β˜…β˜…β˜…
4.9 / 5.0 Β· 200+ web projects
"

Nexcode rebuilt our entire frontend in Next.js App Router in 12 weeks. Lighthouse score went from 41 to 97. The code quality, test coverage, and documentation are unlike anything I've ever received from an external team. We extended the engagement twice.

SM
Sarah Mitchell
CTO, Apex Financial Β· SaaS Platform Rebuild
β˜…β˜…β˜…β˜…β˜…
Upwork Verified
β˜…β˜…β˜…β˜…β˜…
AI / SaaS

"RAG platform at 2M queries/day with 99.2% accuracy. Retrieval architecture handles 10M+ documents at sub-200ms latency."

JK
James Kowalski
CEO, NovaBrain AI
β˜…β˜…β˜…β˜…β˜…
Internal Tools

"Dashboard rebuilt in Next.js. 8-second load became 1.1s. Team velocity doubled because the codebase is so clean."

LM
Laura MΓΌller
VP Product, AutoDesk EU
β˜…β˜…β˜…β˜…β˜…
Legal Tech

"Legal document search cut associate research time by 70%. RAG evaluation framework tracks quality improvements every sprint."

PR
Priya Rao
CTO, LegalMind
β˜…β˜…β˜…β˜…β˜…
InsurTech

"Fine-tuned claims classification from 67% to 94% accuracy. Auto-retraining pipeline runs weekly. Outstanding MLOps."

MT
Mark Torres
Head of AI, InsureTech
β˜…β˜…β˜…β˜…β˜…
Health

"Healthcare app shipped in 14 weeks, passed App Store review first submission. HIPAA controls were there from day one."

EW
Emma Walsh
CEO, HealthPath
β˜…β˜…β˜…β˜…β˜…
Streaming

"GraphQL API handling 8M queries/day at 99.97% uptime. Query complexity limits and caching layer production-ready day one."

DK
Daniel Kim
CTO, Streamify
FAQ

Web dev questions

The questions we hear before every web project. Straight answers, no sales spin.

Still have questions?

Our engineers answer technical questions β€” not a sales team.

Ask a Question β†’
What framework do you recommend β€” Next.js, React, or Vue?+
For most projects: Next.js 14 with App Router. It handles SSR, SSG, ISR, and API routes in one codebase, has the best SEO story, and pairs beautifully with Vercel for zero-config deployments. We choose React (Vite) for internal tools and dashboards where SEO doesn't matter. Vue/Nuxt for teams already in the Vue ecosystem. Angular for large enterprise teams requiring strict architecture.
How do you guarantee Lighthouse 90+?+
We set Core Web Vitals as a hard CI gate, not a target. Every PR runs Lighthouse CI β€” if scores drop, the build fails. We optimise images with next/image, use font display:swap for all custom fonts, implement code splitting and lazy loading by default, and do a dedicated performance sprint before launch.
What does the development process look like?+
Two-week sprints with a deployed staging demo at the end of every sprint β€” not a Loom recording, a real URL you can click. Week 1 is always architecture (no code). Every sprint starts with a backlog review and ends with a demo + retrospective. You have direct access to your engineer in Slack, not a project manager.
How is pricing structured?+
Fixed-price for well-scoped projects (our preference). Time & materials for complex, evolving scope. All engagements start with a 1-week paid discovery sprint ($2,500) that produces a detailed technical spec and fixed-price quote. No surprises.
Do you work with our existing tech stack?+
Yes. If you have an existing React, Vue, Angular, or Node.js codebase, we can extend it. We'll do a codebase review on day 1 and be honest if we think a different approach would serve you better. We never recommend rewrites unless the business case is clear.
Next.js App Router vs Pages Router β€” when do you use each?+
App Router for all new projects β€” React Server Components, streaming, parallel routes, and Server Actions are the direction React is heading. Pages Router for existing apps where the migration cost isn't justified. We don't force migrations, but we build new features in App Router even in Pages Router apps when possible.
Related Services

Often paired with web development

πŸ“±
mobile app development

iOS, Android, React Native β€” ship web and mobile from the same team.

Learn more β†’
πŸ€–
AI & machine learning

LLM integrations, RAG systems, intelligent features built into your product.

Learn more β†’
☁
cloud & DevOps

Infrastructure, CI/CD, Kubernetes β€” the ops layer your app needs.

Learn more β†’
πŸ›’
eCommerce development

Shopify, headless commerce, and custom checkout flows.

Learn more β†’
Available for new projects

Ready to build your web product?

Free discovery call Β· 24hr written proposal Β· Fixed-price quote Β· No commitment.
We scope your project, recommend the right stack, and estimate accurately β€” before you decide.

Start Your Web Project β†’ Hire a React Developer
β˜…β˜…β˜…β˜…β˜… 4.9 on Upwork Β· Top Rated Plus Β· 200+ web apps delivered Β· Since 2014