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Custom Software Development Company — Los Angeles, CA

We build custom software that
actually ships.

Dude Lemon is a top custom software development company in Los Angeles, California. We design, build, and deploy enterprise web applications, cross-platform mobile apps, scalable cloud infrastructure, and AI-powered software solutions for businesses worldwide.

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Javascript
Python
Typescript
PHP
Rust
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import asyncio
from dataclasses import dataclass, field
from typing import AsyncIterator, Callable
 
@dataclass
class Pipeline:
    stages: list[Callable] = field(default_factory=list)
    _semaphore: asyncio.Semaphore = None
 
    async def execute(self, data: AsyncIterator):
        async for batch in self._chunk(data, 256):
            tasks = [self._run(s, batch) for s in self.stages]
            yield await asyncio.gather(*tasks)
 
    async def _run(self, fn, batch):
        async with self._semaphore or asyncio.Semaphore(8):

Trusted by teams building with enterprise technology

GoogleAmazonBMWPhilipsStarbucksBest Buy
9+
Years building custom software solutions
1,000+
Web apps, mobile apps & cloud systems deployed
100+
Enterprise clients served worldwide
1M+
Lines of production code shipped

SaaS Products We Built & Operate

Production SaaS platforms built from scratch.

Two live SaaS products designed, developed, and scaled by our team. Real production software serving real users every day.

R
ReviewMankey
63% complete
OverviewBoardTimeline
JS
Backlog7
Design
Redesign response templates
Update AI tone and format
JR
LP
Aug 27
8h
3
Research
Sentiment analysis v2
Multi-language support
SK
Sep 2
12h
1
Backend
Webhook retry queue
Handle failed deliveries
MG
TC
Sep 5
6h
2
Add task
In Progress3
Frontend
Dashboard analytics charts
Review volume by platform
AK
NB
Aug 29
4h
5
AI
Auto-reply confidence threshold
Tune scoring model cutoff
PW
Aug 30
3h
2
Add task
Verification2
QA
Platform token refresh flow
Google & Apple OAuth edge cases
JD
RM
CS
Aug 28
2h
4
Design
Mobile notification layout
iOS badge + push copy
TK
Aug 28
1h
1
Add task
Done4
Backend
Rate limit per tenant
Per-plan quota enforcement
SK
LP
Aug 25
5h
3
Frontend
Bulk reply selector
Multi-select + batch action bar
JR
Aug 24
3h
Add task
LIVEreviewmankey.com

ReviewMankey

AI-powered review management SaaS platform. Aggregates customer reviews from Google, Play Store, and App Store. Features automated AI response generation, sentiment analysis, and team collaboration tools.

847reviews processed per day
3platforms connected
< 2saverage AI response time
React
PostgreSQL
Redis
OpenAI
Stripe
LIVEwixai.io

Wix AI

AI-powered e-commerce automation for Wix stores. Handles high-volume customer support with 94% auto-resolution rate. Deep integration with Wix Stores API and Wix Velo custom development.

10,000+messages handled per day
94%auto-resolution rate
500+stores in production
Wix
Node.js
MySQL
OpenAI
Hello 👋 How may I help you today?
Hi! I'm trying to reset my password, but the reset link keeps redirecting me to a blank page...
Got it — I'll send a fresh reset link to your email right now. Should arrive in under 30 seconds. ✓

Custom Software Development Services

Full-stack custom software development under one roof.

End-to-end custom software development services — web applications, mobile apps, backend systems, cloud infrastructure, AI integration, and cybersecurity. One team, one codebase standard, zero handoff friction.

Custom Web Application Development

Full-stack web apps built with React 19, Node.js, and TypeScript. Enterprise-grade architecture with cloud-native design from day one.

Mobile App Development

Cross-platform mobile applications using React Native with native performance, offline-first architecture, and seamless API integration.

Cloud Infrastructure & AWS Services

Production AWS infrastructure — EC2, S3, CloudFront, RDS, SES — engineered for 99.9% uptime and zero-downtime deployments.

AI & Machine Learning Integration

GPT-4, Claude, and custom ML pipelines embedded into your product architecture. Production-ready AI, not prototypes.

Cybersecurity & Compliance Engineering

WebAuthn passwordless auth, PGP encryption, WAF rules, and audit logging. NIST 800-53, SOC 2, and ISO 27001 compliance.

API Development & Microservices

Scalable microservice architectures with RESTful APIs, PM2 clusters, real-time data pipelines, and developer-first documentation.

Custom Machine Learning Solutions

Custom model training, embeddings, vector search, and inference pipelines. ML systems built for production scale and reliability.

DevOps, CI/CD & Cloud Automation

GitHub Actions, Nginx, Docker, PM2. Automated testing, continuous deployment pipelines, and 24/7 production monitoring.

View all work

Case Study: Enterprise Multi-Portal Platform

4 portals. 1 unified platform.
73 mobile screens.

A full-stack enterprise travel platform — admin dashboard, operator portal, React Native mobile app, and API documentation portal — all built on a shared Node.js backend with 145 PostgreSQL tables and PM2 cluster deployment.

Admin + operator portals with 48+ management pages
React Native app with 73 screens and offline support
Full API docs portal with live endpoint testing
GET/v1/bookings200 OK
POST/v1/bookings201 Created
GET/v1/tours200 OK
PATCH/v1/bookings/:id200 OK
GET/v1/operators200 OK
POST/v1/auth/login200 OK
DELETE/v1/bookings/:id204 No Content
GET/v1/tours/:id200 OK
POST/v1/tours201 Created
GET/v1/operators/:id/stats200 OK
POST/v1/webhooks/subscribe201 Created
GET/v1/payments200 OK
GET/v1/bookings200 OK
POST/v1/bookings201 Created
GET/v1/tours200 OK
PATCH/v1/bookings/:id200 OK
GET/v1/operators200 OK
POST/v1/auth/login200 OK
DELETE/v1/bookings/:id204 No Content
GET/v1/tours/:id200 OK
POST/v1/tours201 Created
GET/v1/operators/:id/stats200 OK
POST/v1/webhooks/subscribe201 Created
GET/v1/payments200 OK
9:41
Good morning, Terry
Welcome to TryApollo
Your balance
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Details
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Dolphin Adventure
October 17, 09:00 PM
-$44.80
Home
Map
Transfer
Settings
Profile
Admin Portal
20+ pages

Full operator management, KYC, revenue analytics, system configuration

Operator Portal
28+ pages

Booking engine, activity catalog, availability calendar, customer portal

Mobile App
73 screens

React Native, push notifications, offline-first architecture, in-app payments

Docs Portal
Full reference

REST API reference, authentication guides, SDKs, live sandbox testing

See all 6 case studies

Enterprise Software Engineering Standards

Production-grade custom software, engineered to scale.

Every custom software development project ships with automated CI/CD pipelines, enterprise security architecture, and performance-optimized cloud infrastructure from day one.

<>test>pushverifydeploy

CI/CD & Automated Deployment

Continuous integration and deployment pipelines built with GitHub Actions and Docker. Push code, tests run, staging deploys, production swaps — all in under 60 seconds with zero manual steps.

Enterprise Security Architecture

Zero-trust security built into every application — WebAuthn passwordless authentication, encrypted secrets management, WAF rules, and comprehensive audit logging from day one.

05010095+lighthouse

Performance Optimization & Scalability

CloudFront CDN delivery, lazy loading, edge caching, and optimized bundles. Every web application targets sub-second load times and 95+ Lighthouse performance scores.

Explore all work

Software Development Technology Stack

Modern technology stack for custom software development.

9+ years building production software with React, Node.js, AWS, PostgreSQL, Docker, and more. Battle-tested tools powering scalable enterprise web applications and mobile apps.

React
TypeScript
Node.js
Python
AWS
PostgreSQL
Docker
Tailwind CSS
Next.js
GitHub
Cloudflare
Stripe
Android
Apple
JavaScript
Google
OpenAI
Anthropic

Ready to start your custom software project?

We take on a limited number of custom software development engagements each quarter. Get a free consultation and project proposal within 2–3 business days.

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Dude LemonDude Lemon

Custom software development.
Built right. Shipped fast.

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