404Dev — digital agency

We builddigitalsolutions

Websites, Telegram bots, mobile apps, CRM/ERP and automation — outsourcing model, clear price and timeline.

  • 7-day prototype
  • Transparent price
  • Post-launch support
All services
80+projects delivered
60+happy clients
5+years of experience
/ process · feedback

How we work and what clients say

A structured, transparent, results-driven process — and real feedback from teams who trusted us.

/ process
  1. 1
    01

    Discovery

    We study your business goals and define the spec.

  2. 2
    02

    Design & Prototype

    UX/UI design, mock-ups and interactive prototypes.

  3. 3
    03

    Development

    Clean architecture, code reviews, tests, fast delivery.

  4. 4
    04

    Launch

    Deployment, monitoring and ongoing support.

/ feedback
Delivered the site on time and with quality. It became our most effective channel for new clients.
B
Bekzod
CEO, LLC
Automating leads via Telegram bot saved our team 3x time.
M
Madina
Marketing Manager
The CRM transformed our business. Reports in a single click.
J
Jasur
E-commerce Owner
/ Tech stack

Modern and battle-tested tools

Next.jsReactTypeScriptTailwind CSSNode.jsGoGinPythonFastAPIPostgreSQLMongoDBRedisDockerAWSGCPCloudinaryStripeTelegram Bot APIGraphQLtRPCNext.jsReactTypeScriptTailwind CSSNode.jsGoGinPythonFastAPIPostgreSQLMongoDBRedisDockerAWSGCPCloudinaryStripeTelegram Bot APIGraphQLtRPC
/ FAQ

Frequently asked questions

Short, clear answers — got another question? Reach out and we'll reply within one business day.

Simple (landing, bot) — 1-2 weeks. Sites — 3-6 weeks. CRM/ERP — 2-4 months. Detailed estimate after the brief.

Based on scope and complexity. Detailed quote after brief. Payment in stages (50% upfront + milestones).

No, the online brief and first consultation are free. We'll hear your goal and outline possible paths.

Yes. First 30 days bug-fixes are free. Then monthly support or an SLA.

Absolutely. All code, DB, GitHub repo, docs and admin panel are yours. Nothing stays on our side.

Frontend: Next.js, React, TS, Tailwind. Backend: Go, Node.js, Python. DB: PostgreSQL, MongoDB. Mobile: React Native / Flutter. Cloud: AWS, GCP, Vercel.

Yes. Schema.org, sitemap, OG image, SSR, Core Web Vitals — all by default. Built to climb to page one of Google and Yandex.

Wireframe first (structure), then full UI in Figma. You see and comment on every step. We only start coding after final sign-off.

Yes. We audit — what to rewrite vs. patch quickly. Partial upgrades are usually cheaper than a full rewrite.

Of course. We can sign an NDA before the brief — your ideas and data stay fully protected.

Bank transfer (legal entity) or Click / Payme (individual). For international clients — USD wire or USDT.

Just an idea and a bit of time. No spec required — we'll uncover and document the details during the brief.

Still have questions?

We reply within one business day.

/ start a project

Start your project with us

Free consultation — we'll find the right solution for your business.

Telegram