Crypto payments
Money has been sent, but your team still has to check the credit manually
I review one payment journey for delayed credits, duplicate operations, accounting discrepancies and blockchain fees. You receive a report and a plan for fixes.
I help owners of payment products, wallet services and stablecoin settlement systems understand where operations stall and unnecessary costs arise.
Message me on TelegramWhen a review helps
A customer can see the transfer on the blockchain, but your service has not credited it. Statuses disagree, retries may create duplicates, and fees are growing. Your team fixes individual incidents without a clear picture of the whole process.
I examine one agreed payment journey: from a network event through crediting, settlement or reconciliation. You are buying a diagnostic review based on system materials and an action plan for your developer.
What you receive
- A payment journey map: who is responsible for each stage and where an operation can stall.
- A review of repeat handling: what happens if a notification arrives twice or a service retries a request after a failure.
- Reconciliation points: where to compare blockchain records with internal accounting.
- An assessment of dependencies on wallets and blockchain access services.
- Opportunities to reduce transaction fees within the process under review.
- Recommendations for failure monitoring and security, a written report and a video walkthrough of what to fix now and what can wait.
Project example: payment fees and delays
Situation. Growing traffic made crediting funds harder, while blockchain fees increased the cost of operations.
My role. I was responsible for the payment core and real-time transaction tracking.
My work. I designed the payment core architecture and automated the movement of deposited funds, including TRON energy rental and EVM fee balance top-ups. I built transaction tracking across a database of more than 3 million wallets, deposit distribution and ordering controls for outgoing operations.
- Blockchain transaction fee costs fell by 90%.
- Settlement latency fell to 2–3 seconds.
- Load on public blockchain access services fell by 70% through the data caching I built.
These figures come from implementation work on one system. They cover blockchain transaction fees rather than all business expenses, and a review does not guarantee the same result. I do not disclose the project name or customer data.
How the review works
- In a 15-minute call, we select one payment journey and agree the review boundaries and fee.
- You provide a system overview, a payment diagram, sample event logs and screenshots of operating metrics, with secrets and customer data removed.
- I assess operation stages, retries, reconciliation, dependencies and fees.
- You receive a report and a video walkthrough with priorities for fixes.
For the first conversation, describe the delay, discrepancy or unnecessary cost. If your developer holds the technical materials, they will need to help prepare them. Real wallet keys, passwords and access to the live system are not required.
Review boundaries
The review covers one agreed payment journey using the materials provided, rather than the entire payment system. You can give the report to your developer or another contractor.
The service excludes formal smart contract audits, penetration testing, regulatory legal opinions, certification, availability guarantees and management of client funds.
Your materials remain confidential. If we continue with implementation, we agree the work and any access needed, with minimum permissions and the ability to revoke them.
Technical details for your developer
Payment Flow Reliability Audit: trust boundaries; lifecycle/state machine; retries and idempotency; wallet/RPC topology; reconciliation points; gas/energy optimization; monitoring and a security backlog. Each area is tied to specific payment stages and failure consequences.
Fees and timing
Fee: from $1,200. We agree the exact fee before the review starts. The report is ready within 3–5 business days of receiving the materials.
Next step
Message me on Telegram with what is happening to payments and how it affects your business. We will arrange a 15-minute call.
Frequently asked questions
Outcomes and fees
What exactly will I receive after a diagnostic review?
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.
Why is the diagnostic review a separate paid service?
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.
How much does it cost?
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.
How long does a review take?
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.
What if you find no critical problems?
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.
What is excluded from a diagnostic review?
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.
Access and confidentiality
Do you need production access?
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.
How do you handle confidential material?
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.
Who owns the product ideas and materials?
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.
Working format
Do you work alone or with a team?
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.
What language do you use for calls?
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.
What time zone do you work in?
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.
How can I pay?
Bank transfer, payment services, stablecoins, and cryptocurrency are available. We agree the currency, method, and payment schedule in writing before work begins.
Fit for your task
We already have developers. How does an external review help?
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.
We built the product with AI tools. Will everything need rewriting?
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.
Our project is small. Is a review worthwhile?
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.
What evidence supports your experience?
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.
After the review
What happens after the diagnostic 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.
Can we arrange ongoing support?
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.
How do we start?
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.