The prototype works. What needs checking before customers use it?

You receive a written report and a video walkthrough. The contents depend on the selected review and agreed process: a map of the key stages, identified risks and their trigger conditions, reasoned hypotheses about failures, gaps in observability and cost controls, and a prioritized now / next / later plan. Each conclusion is tied to a specific part of the process under review. The number of risks is not predetermined. If there are no launch blockers, the report states what was reviewed and the boundaries within which the conclusion applies.

The review is a standalone service with a concrete deliverable. You keep the report and can have your team, another contractor, or me implement the recommendations under a separately agreed scope.

The fee depends on the process and the amount of material. An automation reliability review starts at $400, an AI product pre-launch review at $600, and a payment journey review at $1,200. We agree the exact fee in writing before work begins.

The report is normally ready within 3–5 business days after I receive the agreed materials. Implementation timing is estimated separately once the scope, dependencies, and acceptance criteria are clear.

You receive a record of what was reviewed, any limitations found, and a conclusion for the agreed scenario. I do not invent issues to reach a quota or claim that a limited materials-based review proves the whole system safe.

Formal smart contract audits, penetration testing, certification, and legal opinions on AML, MiCA, or other regulation. I also do not manage client funds, give investment recommendations, promise returns, or guarantee a particular level of system availability.

No. A system overview, process diagram, settings with secrets removed, sample event logs, and screenshots of operating metrics are normally enough. A diagnostic review does not require passwords, real keys, or access to the live system. If access is needed for a separate implementation phase, we agree its purpose and duration in advance. Permissions should be limited to the minimum required and remain revocable at any time.

Client materials remain confidential. Public examples use anonymized information without closed-project names or customer data. If an NDA is required, we can agree and sign it before sensitive materials are transferred.

Your product, source materials, and data remain yours. My deliverable is the report and recommendations within the agreed scope. Rights relating to later implementation and use of its outputs are documented before that work begins.

I personally perform the reviews and engineering work described on this site. If a task requires a separate specialty, such as a formal security audit, substantial frontend development, or design, it is not included automatically. We agree the participants and separate scope in advance.

I speak Russian fluently. For English calls, I can use the real-time interpretation system I built. Key agreements about scope, fees, and responsibilities are always confirmed in writing. Documents and correspondence are available in English or Russian.

UTC+3. My working day overlaps well with Europe and the CIS, and with part of the US East Coast day. We agree specific meeting times in advance.

Bank transfer, payment services, stablecoins, and cryptocurrency are available. We agree the currency, method, and payment schedule in writing before work begins.

An external review gives the team a map of risks and priorities for one important process. Your developers keep their system knowledge and can implement the recommendations themselves. I examine failure modes and process boundaries without judging people or replacing the team.

Usually not. The review separates launch blockers from improvements that can wait. I prioritize risks such as duplicate charges, data loss, leaked keys, uncontrolled API costs, and failure to recover after an incident. I recommend a rewrite only when local changes cannot solve the agreed problem.

A separate review makes sense if the system handles money or personal data, or if a real-time process matters. If the risk and consequences are limited and the work would not be proportionate, I will say so during the first 15-minute conversation.

The site describes specific outcomes from my engineering work: more than 100 million requests per day in a payment core, monitoring of more than 3 million wallets, more than 10,000 concurrent WebSocket connections, and a 90% reduction in blockchain transaction fee costs. These metrics belong to individual implemented systems and are not promised outcomes of a review.

You can give the report to your team or another contractor. If you want my help, we separately agree the implementation scope, timing, responsibilities, access, and acceptance criteria. Continuing with me is optional.

Yes. After a review or implementation, we can discuss support for a critical part of the system or fractional engineering and technical leadership. The included work, response times, and exclusions are documented separately. The format does not include 24/7 on-call coverage by default.

Message me on Telegram with what should happen, what happens instead, and how it affects the business. In the first 15-minute conversation, we establish whether the task fits my expertise, what materials are needed, and the boundaries of the work.