WebsitesGamesGrowthAIBusiness systemsHardwarePrototypingSince 2006
From problem to result.
You deal with one person: our project lead. They answer for your whole project and its result. Behind them, we pick the right specialists from our pool for your task, and you never have to manage a team.
Illustration · our project lead is your only contact; behind them, a typical mix of 12 of our 57 roles
- person you deal with: our project lead
- 1
- years of experience · since 2006
- 20+
- specialist roles in our pool
- 57
- offices · Kyiv, Tallinn, Berlin
- 3
Part A
One person. Fully responsible.
Our project lead is your only contact: one person who knows your project, answers for deadlines and quality, and keeps you up to date. You never have to coordinate developers, designers or marketers. We do that, and we work for the result.
Behind our project lead: a typical mix of 12 of our 57 specialist roles. Pick a stage to see who joins when.
-
LEAD
Our project lead the whole way
Your only contact. Answers for the whole project and its result.
ARCH
Solution architect
Joins for the first 1–2 months: maps your problem, chooses the architecture and stack, and writes the plan the team builds on.
BA
Business analyst
Turns how your business really works into a clear spec — accounting, billing, compliance and every edge case.
UX/UI
UX/UI designer
Interfaces people understand at first sight — from wireframe to final pixel.
FRONT
Frontend developer feweron call
Fast websites, web apps and PWAs that work on every screen.
BACK
Backend developer feweron call
APIs, databases and integrations — the logic behind accounting, billing, booking and payments.
AI
AI integrator if needed
Brings AI into your business: assistants and agents, document processing, AI inside the software you already use.
HW
Hardware integrator if needed
Printers, payment terminals, scanners, fiscal devices — anything with a port or an API.
QA
QA engineer
Manual and automated testing, so a release never breaks what already works.
OPS
DevOps engineer
Servers, cloud, deployments, backups and monitoring.
SEO
SEO specialist
Technical SEO, content structure and local search, so customers find you.
ADS
Ads specialist
Google and Meta campaigns, judged by real customers rather than clicks.
MKT
Marketing strategist
Positioning, offer and one plan that ties the site, the ads and the content together.
See all 57 specialists
Plan & lead
- Solution architect
- Business analyst
- Product manager
Software
- Backend developer
- Frontend developer
- Mobile developer (iOS, Android)
- AI integrator
- Data / ML engineer
- Hardware integrator
- Embedded / firmware developer
- AR / VR developer
- Payments integrator (terminals, acquiring)
Quality, security & run
- QA engineer
- DevOps engineer
- Security specialist
- Technical writer
- Support after launch
Compliance
- Fiscal & tax compliance specialist
- Data protection specialist (GDPR)
Design
- UX/UI designer
- Graphic designer (logos, brand identity)
- Motion designer
- 3D visualizer (product and interior renders)
- Accessibility specialist
Prototyping
- Prototyping engineer (CAD)
- 3D printing specialist
Games
- Game designer (mechanics, balance, GDD)
- Level designer
- Narrative designer / writer
- Game producer
- Game economy & monetization designer
- Unity developer
- Playtester
- Community manager (Discord, Steam)
Art & animation
- Concept artist (sketches)
- 2D artist
- 3D modeler
- Technical artist
- Rigger
- Animator (2D, 3D)
- VFX artist
Sound, photo & video
- Composer
- Sound designer
- Photographer
- Videographer
- Video editor
Content
- Copywriter (English, Ukrainian, Russian)
- Translator / localization
- Content manager
Growth
- Marketing strategist
- SEO specialist
- Ads specialist
- SMM manager
- Email marketer
- Conversion specialist (CRO, A/B tests)
- Web analyst
- PR specialist
Plus our project lead — your only contact.
Part B
Behind the scenes, the mix changes.
The right people at the right time, and you never have to manage any of it. Our project lead stays with you the whole way.
-
Start
Solution architect and business analyst, for 1–2 months: the problem, the architecture, the plan.
-
Build
Backend, frontend and UX/UI. An AI integrator or a hardware integrator if the project needs them.
-
Release
QA and DevOps engineers join; the build team shrinks.
-
After launch
SEO, ads and marketing bring customers; developers stay on call for changes.
- stays: the project lead
- joins at this stage
- joins if needed
- fewer / on call
- stepped back
Squares, left to right: LEAD · ARCH · BA · UX/UI · FRONT · BACK · AI · HW · QA · OPS · SEO · ADS · MKT. An example of how a mix changes — yours depends on your project.
You talk to one person. We do the rest.
- 01You describe the problem to our project lead, in plain words. No spec needed.
- 02We pick the right specialists for it. You never have to manage them.
- 03Our project lead keeps you updated and answers for the result, during and after launch.
Part C
Seven directions. One company.
Six directions we offer as services — and our own game studio.
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Websites & web apps
- Sites and online shops
- Booking
- Multilingual portals
- Admin panels
-
Growth & promotion
- Photo shoots and websites built around them
- Ad campaigns on Google and Meta
- Reviews and social media
-
AI integration
- AI assistants and agents
- Document processing
- Automating routine work
- AI inside your existing software
-
Business systems
- Complex accounting
- Billing and invoicing, payments
- Fiscal and tax compliance
- CRMs
-
Hardware integration
- Printers and payment terminals
- Scanners and fiscal devices
- Anything with a port or an API
-
Prototyping & 3D printing
- Prototypes of devices and products
- 3D models for printing (CAD)
- 3D printing of parts, cases and models
-
Waterfall Interactive
Our game studio
- Our own games
- Complete games for studios and brands
- Art, game design and GDD, level design
- Prototypes and Unity programming
-
Something else?
Describe your problem in plain words. Our project lead will find the right people for it.
Open source
We support open source.
Parts of our work are free libraries for everyone: payments, cash machines and fiscal compliance. The same code runs in our own projects.
-
RozetkaPay SDK
.NET client for RozetkaPay (Ukraine): payments, holds, refunds, callbacks and payouts.
-
VNE cash recycler SDK
.NET client for VNE cash machines: payments, change, refill, emptying and status.
-
fiskaly SIGN DE SDK
.NET client for German fiscal compliance (KassenSichV): TSS, clients, transactions and exports.
Since 2006 –
20+ years.
More than 20 years of building websites, software and games. Founded in Kyiv in 2006 by Anatoliy Yermakov as MIX SYSTEMS LLC (ТОВ «МІКС СИСТЕМС»), registered on 10 August 2006, company code 34477974.
Most of our clients are in Europe, so in 2026 we opened an office and a company in Tallinn, Estonia: BezKordoniv OÜ, registry code 17461320. European clients work with an EU company, with EU invoices and VAT.
Our games are made by Waterfall Interactive, the game studio of MIX Systems: our own games and game development for studios and brands.
Part D
Tell us your problem.
Describe it in your own words — no technical spec needed. Our project lead will come back to you with a plan.