From idea to a finished project
Turnkey custom development of information systems - from architecture to operations and support. Fast and reliable: one person accountable for the result, on the foundation of an in-house open-source platform proven in real projects since 2017.
How it works
From architecture to production and maintenance. One person accountable for the result.
Understand the task
I dig into your business processes and goal. Not "code to spec" - I understand what must work and why.
Design the architecture
For the business goal, timeline and budget. A minimally sufficient solution instead of fashionable over-engineering.
Ship to production
On a ready foundation: auth, REST, workflow, files already exist. The budget goes to your logic, not infrastructure.
Maintain it
Operation, evolution, hand-off. The system lives for years - not "delivered and forgotten".
Delivered Projects
Projects built on an in-house codebase for individual customer requirements. Each project is an active system you can open and verify.
ChargeMeCar
European deployment of the EV charging platform: Stripe payments including ad-hoc QR payment under the AFIR regulation, OCPI roaming readiness. A brand on the Apostol CSMS platform.
CopyFrog
AI platform for marketing and e-commerce: generating ad copy, images and video for products and services, orchestration of several AI providers, subscriptions and card payments.
OCPP CSS
A retail service for charging station owners: self-service station connection in ~15 minutes, drivers' money goes straight to the owner's account with an automatic fiscal receipt. A brand on the Apostol CSMS platform.
Ship Safety ERP
Safety management system for shipping companies. SOLAS, ISM Code compliance. Registered in the Russian Software Registry.
Apostol ARB
An aggregator of arbitrage opportunities on crypto futures: real-time quotes from Binance, Bybit, OKX, MEXC and Bitget, automated pair discovery, trader signals and Telegram control.
DEBT-Master
Utility debt-collection automation for property management companies and other housing-sector organisations: pre-trial work, court orders and claims, enforcement proceedings, statutory penalty calculation, data import and court document generation.
Campus CORS
Real-time GNSS correction delivery over the NTRIP protocol: a base-station network provides centimetre-level positioning accuracy - precision agriculture, geodesy.
Talking To AI
Telegram chatbot for AI conversations (ChatGPT). Implemented entirely in PL/pgSQL - from business logic and payments to the OpenAI API integration.
BitDeals
A P2P deal platform with buyer funds protected by 2-of-3 bitcoin multisig escrow: deal data is PGP-signed, server nodes synchronize over HTTP and Bitmessage. Built entirely in Python and React - the stack is chosen for the task, not the other way around.
Apostol CRM
A ready-made open-source CRM assembly - the template every new project starts from: authentication, REST API, roles and workflows are already built and running. Fork it and build your own CRM instead of the infrastructure.
And it runs for years
Have a similar task?
A free 30-minute call: we go through your task and I send a written estimate of timeline and budget.
Fast and reliable
Development moves fast and the result holds up in production for years. Here's why:
A ready foundation - A-POST-OL
The open-source A-POST-OL platform covers many months of infrastructure out of the box: authentication, REST API, workflow, files, queues, audit log, localization. The project budget goes to your business logic, not to reinventing the wheel.
One person - a team's output
Own platforms as the foundation plus AI tools in development, review and documentation deliver output comparable to a team - with one point of accountability and direct contact with the architect.
Production reliability
24/7 operation, zero-downtime deployment, dev/stage/prod separation, migration control. Engineering discipline from the banking domain, where the cost of a mistake is money.
An in-house open-source platform
Projects are built on A-POST-OL and db-platform - my own open-source platforms carrying production load since 2017. Authentication, REST API, workflow, files, queues and reports are already built and battle-tested - the project budget goes into your business logic, not infrastructure.
Architecture, reliability, benchmarks and internals - on a dedicated page for those who want the details.
More about the platform →Your project - your code
Contractor independence is built into the architecture.
Open foundation
The A-POST-OL and db-platform frameworks are open-source (MIT), in production since 2017. No closed "black box".
You own the sources
Project code stays with the client. Business logic is written in PL/pgSQL - a SQL dialect of PostgreSQL, readable by any developer who works with databases.
Hand-off ready
The project can be maintained and evolved by any PostgreSQL developer - no lock-in to one person.
Terms & Pricing
Two ways to work
Turnkey
I take the whole project - from architecture to production and maintenance. One point of accountability.
$100/hour
$800/day · $4,000/week · $16,000/month
Inside your team
I join your team on a project basis or reinforce the backend. I work within your processes.
$60/hour
$480/day · $2,400/week · $9,600/month
Minimum engagement - one week per month; you decide the rest.
Project cost
To gauge the total cost of a project:
| A compact MVP or an integration on the ready foundation | 1-1.5 months | $16,000-24,000 |
| A production system with several user roles and payments | 3-5 months | $48,000-80,000 |
| A multi-tenant SaaS at the Apostol CSMS scale | 6+ months | $96,000+ |
Exact figures - after a short call to scope the task. Engagement can stay partial: a smaller budget means fewer hours a week, not no contractor at all.
About the developer
Alen Prepodobny - a sole proprietor since 2021. 25+ years in IT, 10+ of them as a technical director; I grew up in banking IT, where the cost of a mistake is measured in money and regulation. I take a project, dig into the client's business processes, and carry it from idea to production - then maintain it. A-POST-OL and db-platform are my own tools, grown out of real projects: EV charging, maritime safety, fintech, geodesy.
Custom development
- •Frog IT SARL (France) - for clients in the EU
- •IE Prepodobny Alen Alekseevich - for clients in Russia
Get in touch
Describe your task - I'll respond within a day
What happens next
- 1I respond within a day - personally, not a bot or an account manager.
- 2We hop on a 30-minute call - free, no obligations, just to scope the task.
- 3I send a written estimate of timeline and budget - then it's your call.