FROST Engineering
Remote. Hours overlap the EU and the US East Coast.

Internal systems, delivered with the keys

Back-office software, integrations, Telegram bots — built around your process. Delivered whole: the source code, the documentation and every access key become yours.

6systems built
34technologies in production
<24hreply time
Pythonaiogram 3FastAPISQLAlchemy (async)aiosqliteOpenAI APITelegram Mini AppsystemdPlaywrightSQLAlchemyAlembicPostgreSQL

Own products

Systems I built for myself. Each one runs in production today.

All in Club — poker club in TelegramAll in Club — poker club in TelegramAll in Club — poker club in TelegramAll in Club — poker club in Telegram

All in Club — poker club in Telegram

poker club · product, architecture and full development · 2026

test coverage: 645 automated tests across 80 files

A poker club inside Telegram: invitation-only tables, a No-Limit Hold'em engine — dealer, blinds, showdown — chip accounting and custom table audio. Runs on a VPS; every release passes its o

Pythonaiogram 3FastAPISQLAlchemy (async)aiosqlite
Wallet Buffet — financial super-appWallet Buffet — financial super-appWallet Buffet — financial super-app

Wallet Buffet — financial super-app

vehicle rental · product, architecture, backend and frontend — full development · 2026

76 vehicles under management, 34 service schedules taken from manufacturer documents

A super-app inside Telegram: accounts and transactions, per-business roles, a security log. Inside it, a fleet module: rental contracts, handover and return with mileage and fuel recorded, s

FastAPISQLAlchemyAlembicPostgreSQLSQLite
ER

Ermolai — bot fleet control centre

internal tool · product, architecture and full development · 2026

One owner-only bot for the whole fleet: a status summary with latency in ms, restart-all in one command, a task queue for an AI agent, a watchdog with auto-restart and alerts. The menu proto

Pythonaiogram 3SQLAlchemy (async)aiosqliteCursor SDK
AT

ATCC — algorithmic trading platform

algorithmic trading · product, architecture and full development · 2026

the risk engine is covered by 111 automated tests (20 of 20 pre-trade checks), the order execution engine by 50 tests

The full platform: quotes and option chains from four exchanges, a Rust risk engine with 20 pre-trade checks, TWAP order execution, a Mini App dashboard. Live orders stay blocked by a safety

PythonFastAPIRust (axum)React + TypeScript (Vite)ccxt
IN

Internal bonus points store

bonus programme · product, architecture and full development · 2026

A store inside Telegram: a photo catalogue, instant point deduction on purchase, an immutable ledger of every operation — each cancellation carries a mandatory reason. The admin panel awards

PythonFastAPIaiogram 3SQLiteCloudflare Tunnel
DO

Domovoi AI — smart home operating system

smart home · product, architecture and full development · 2026

15 device and service drivers in a single panel

A home control centre of my own: climate, lighting, TV, security, network and UPS in one panel. Every device is a separate driver: a new one plugs in without touching the core. A Telegram bo

PythonFlaskvanilla JSYeelight APIGree AC API

Pricing

Starting prices. The exact quote is set on the intro call.

3 months free with any project built by me

Process audit

Where your team loses hours and what to automate first.

from 300 USD

fixed · 3–5 days

  • Interviews and process map
  • Bottleneck list with cost estimate
  • Automation plan with priorities
  • Written report you keep

Best for: Teams of 3–50 doing repetitive work by hand

Recommended

Custom internal system

Accounting, CRM, fleet, warehouse — built around your process.

from 3 500 USD

per project · 3–8 weeks

  • Web app + Telegram interface
  • Roles and access control
  • Integrations: bank, payments, marketplaces
  • Deployment on your server
  • Documentation and handover

Best for: Businesses outgrowing spreadsheets

Integration or bot

Makes two systems talk: API, bot or webhook, with errors handled and logged.

from 900 USD

per integration · 1–2 weeks

  • API integration with error handling
  • Telegram bot or webhook
  • Retries and delivery logs
  • Monitoring so failures are visible

Best for: Anyone copying data between systems by hand

Ongoing engineering

A senior engineer on your team, without hiring one.

from 1 500 USD

per month · monthly

  • Agreed hours per month
  • Priority fixes
  • New features by roadmap
  • Monthly written report

Best for: Products that need steady development

One service: a bot, a landing page, a single integration.

Care

150 USD / per month

Work included: 2 h / month · Response time: 48 h

  • Monitoring and alerts
  • Small fixes
  • Dependency updates
  • Monthly status note

Deep care

400 USD / per month

Work included: 8 h / month · Response time: 24 h

  • Everything in Care
  • New small features
  • Performance tuning
  • Backup checks

VIP · your engineer on call

900 USD / per month

Work included: 16 h / month · Response time: 4 h

  • Everything in Deep care
  • Your engineer on calls
  • Direct line, no ticket queue
  • Roadmap planning together

A working system: several modules, external integrations, real users.

Care

300 USD / per month

Work included: 4 h / month · Response time: 24 h

  • Monitoring across modules
  • Incident response
  • Integration health checks
  • Monthly report

Deep care

800 USD / per month

Work included: 16 h / month · Response time: 8 h

  • Everything in Care
  • Feature development by roadmap
  • Data and schema changes
  • Staging environment

VIP · your engineer on call

1 800 USD / per month

Work included: 32 h / month · Response time: 2 h

  • Everything in Deep care
  • Your engineer on calls
  • Same-day hotfixes
  • Quarterly architecture review

Load-bearing system: many integrations, money flows, uptime matters.

Care

600 USD / per month

Work included: 8 h / month · Response time: 12 h

  • 24/7 monitoring
  • Incident response with post-mortem
  • Payment and API integrity checks
  • Monthly report

Deep care

1 500 USD / per month

Work included: 32 h / month · Response time: 4 h

  • Everything in Care
  • Continuous development
  • Load and failure testing
  • Documentation kept current

VIP · your engineer on call

3 200 USD / per month

Work included: 64 h / month · Response time: 1 h

  • Everything in Deep care
  • Your engineer on calls
  • Named backup engineer
  • Written SLA

How it works

I build internal systems: accounting, fleet, CRM, Telegram apps, payment and marketplace integrations. Each one is shaped around the way your team already works.

  1. A 30-minute call: your process and where it slows down. Free.
  2. A written scope with a fixed price. You decide with the numbers in front of you.
  3. A working build in 2–3 weeks, then iterations you can click through.
  4. Delivery and a proper handover. Ongoing care is a separate contract — your call.

The system ships running on your real data. The first weeks after launch are part of delivery: I tune its behaviour to the live process. The documentation is written so any engineer can develop it further — who runs it next stays your choice.

If I misjudge the scope, I finish the work at my own cost.

Who you are dealing with

Behind the alias is an engineer with an entrepreneur's background: about seven years of running my own business — trade, international logistics, finance and operations. So I read your task the way an owner does: you are buying lower risk and speed, I price the work in money and hours saved, and features that add neither get crossed out of the estimate.

Identity is disclosed on the first video call — under NDA, before any payment: you see my face, learn my name, and we sign the contract. The same NDA covers your project data.

Do you sign an NDA?
Yes, before any project details change hands.
How do you price?
Fixed price against a written scope; a monthly retainer for ongoing work.
How long does a project take?
An audit runs 3–5 days, an integration 1–2 weeks, a full system 3–8 weeks.
Where does the system run?
On your server; deployment is part of the scope.
What happens after delivery?
Your choice: ongoing care with me, or a handover to your own engineer.

Describe the task

Two lines is enough — the rest we sort out on the call.

What happens next

1. I reply within one business day with 2–3 questions.

2. A free 30-minute call: your process and the edges of the task.

3. You get a written scope and a fixed price. Then you decide.