Web Platforms & SaaS
Multi-tenant products, dashboards and internal tools built on a schema that still makes sense once you have a hundred times the data you have today.
- Next.js
- PostgreSQL
- Auth & billing
Your Idea. We Build.
Your elite partner for scalable digital platforms, flawless performance, and fluid user experiences.
Native & Mobile Web
Engineering ultra-fluid iOS, Android, and web apps with desktop-grade speed and responsiveness.
High-Efficiency Systems
Architecting core programmatic code, low-latency SaaS platforms, and heavy-duty, high-performance backends.
What we do
Everything between the idea and the traffic.
Design, engineering and infrastructure under one roof, so nothing gets lost in a handoff between three vendors who have never spoken to each other.
Mobile & Native Apps
iOS, Android and installable web apps that feel native — real gesture handling, offline behaviour and push, not a website in a shell.
- React Native
- PWA
- App Store release
E-commerce & Booking
Storefronts, reservation flows and payment integrations wired to whatever you already run your business on.
- Payments
- Inventory
- Scheduling
Performance & SEO
Core Web Vitals, crawlability and structured data treated as engineering work with measurable before-and-after numbers.
- Core Web Vitals
- Schema.org
- Audits
Design Systems
A component library and token set your team can build on for years without every new page drifting from the last one.
- Tokens
- Components
- Accessibility
Maintenance & Support
Dependency updates, monitoring and a person who answers when something breaks at an inconvenient hour.
- Monitoring
- Updates
- On-call
Stack
We pick boring, well-supported tools on purpose. Everything here is something your next developer will already know how to read.
- TypeScript
- React
- Next.js
- Node.js
- Tailwind CSS
- PostgreSQL
- Prisma
- React Native
- Python
- Redis
- AWS
- Vercel
- Docker
- Playwright
- Figma
Why NEFLOW
Built different, on purpose.
Senior engineers only
No account managers relaying messages, no junior developers learning on your dime — you work directly with the people writing the code.
Built for scale from day one
Every architecture decision assumes you'll outgrow today's traffic, not just survive it.
We take on what others turn away
Complex integrations, legacy migrations, performance-critical systems — if it's technically hard, that's exactly our lane.
Corporate Website
JWSYSTEMS
A corporate site for JWSYSTEMS, a Seoul-based firm that builds and runs online education platforms, presenting its five services — LMS/LCMS, live video classrooms, HTML5 e-learning content, VR/AR, and systems integration — alongside the sixteen courses it produced in-house.
Corporate WebsiteE-learning
Corporate Website
SmartGene Inc.
A bilingual corporate site for SmartGene Inc., a Daejeon-based life-science reagent manufacturer supplying PCR/qPCR reagents, DNA/RNA purification kits, and lab management software to universities, corporations, and research institutes across Korea.
BilingualCorporate Website
FAQ
Questions we get asked first.
If yours is not here, ask us directly — we would rather answer it before you commit to anything.
How long does a project take?
A marketing or portfolio site is usually measured in weeks; a platform with accounts, payments and an admin side is measured in months. We give you a scoped timeline after discovery, not before — an estimate made without seeing your data model is a guess.
How do you price work?
Fixed price for a defined scope, or a monthly retainer for ongoing product work. Either way you see the breakdown before anything starts, and scope changes are quoted separately rather than absorbed quietly and billed later.
Can you take over a project someone else started?
Yes, and it is a large part of what we do. We start with a written audit of the existing codebase — what is salvageable, what is load-bearing, and what will have to be replaced — so the decision to continue or rebuild is made with evidence.
Who owns the code?
You do, from the first commit. Everything is written in your repository under your account, with no proprietary framework you would need us to maintain and no license that expires if you stop working with us.
Do you work with clients outside Korea and Canada?
Yes. The team already spans Seoul and Toronto, so we are used to working across time zones, and we run projects in both English and Korean.
What happens after launch?
Launch is when the real traffic finds the edge cases, so we stay on for a stabilisation period by default. After that you can take it in-house, keep us on a maintenance retainer, or call us only when something needs building.
Got a technical problem other agencies won't touch?
Tell us what you're building. We'll get back to you within one business day with next steps.