Get a Review from $250

Your AI app works in the demo. I make it ready for real users.

A fixed-price Review of your Lovable, Bolt, v0 or Cursor app in 3 to 5 days. Then I fix what it finds.

Get a Review from $250See a sample report

Simon SudarushkinMy pull requests are merged in Rust, Caddy and Playwright.

Illustration of a fictional AI app under review with three findings: Critical, users can read each other's data; High, an API key exposed in the browser; Medium, no cap on AI model spend.
Illustration. The app and its numbers are fictional.

Pull requests merged by maintainers

My own open source: skill-placebo, a placebo-controlled benchmark of popular coding agent skills.

Eight things a demo never tests

In a demo, one person clicks through the main flow with test data. Nobody opens another user's records, finds a leaked key, fails a payment or leaves a loop calling the model all night. That is what the Review looks for.

  • Sign-in and sessions

    Can someone skip sign-in, or keep using a session after they sign out?

  • Data access

    Can one customer read or change another customer's records?

  • Secrets

    Do API keys or database passwords ship to the browser or sit in the repo?

  • API boundaries

    Do your endpoints check input, size and rate before they do real work?

  • Error handling

    When the model or the payment provider fails, what does the user see?

  • Deploy and rollback

    Can you ship a fix and undo a bad release without guessing?

  • Monitoring

    Will you hear about an error before a customer writes to you?

  • LLM cost

    Can one user or one loop run up the model bill?

The Review is read-only. I work from your code, configuration and docs, and I don't send requests that change data or cost you money. It does not include penetration testing or compliance certification.

Get a Review from $250See how findings are written

Start with a Review. Fix or build after.

Every step has a fixed price, agreed in writing before work starts. The Review comes first because it tells you what the next step has to cover.

Start here

Production Readiness Review

from $250

3, 4 or 5 days, by tier

  • A PDF with findings ranked by impact and effort
  • The evidence and a fix for every finding
  • A recorded walkthrough, so your developer can act on it without a call

Fixed price. Paid through Upwork escrow. Your code stays in your repository.

Not included: code changes, penetration testing, compliance certification.

Get a Review from $250

  1. $250

    Launch Risk Map, 3 days

    One app and its main user flow. Up to 10 prioritized findings.

  2. $399

    Full Readiness Review, 4 days

    Adds focused checks of sign-in, data access, secrets, deployment, error handling and monitoring, one AI or payment flow, and a remediation backlog.

  3. $499

    Review + Fix Specifications, 5 days

    Adds implementation notes and acceptance criteria for the three highest-priority fixes.

New idea with an unknown technical risk? The AI Feasibility Sprint ($750, 5 days) tests the riskiest part first. If the build starts within 30 days, the $750 counts toward it.

After launch: Care Plan from $500/mo for monitoring, cost alerts, bug fixes and small improvements.

How the work runs, in writing

You never need to book a call. Every step happens in writing, and I answer within 24 hours.

Review 3 to 5 days

  1. Order

    You buy the Review on Upwork. The payment waits in escrow until you approve the delivery.

  2. Access

    You share read-only access: the repository, the app link, and your main user flow in five sentences or fewer.

  3. Review

    I review the code, configuration and docs. 3, 4 or 5 days, depending on the tier.

  4. Report

    You get the PDF and a recorded walkthrough in Upwork. Fix it yourself, give it to your developer, or ask me for a rescue build.

Build 14 days from the first commit

  1. Brief

    You send a short brief on Upwork: what the product must do, and by when.

  2. Scope

    I reply with written questions, then a fixed price and an acceptance checklist.

  3. Day 1

    The first commit lands in your GitHub. From here, the code is yours.

  4. Days 2-12

    A written update every workday and a short demo video every 2‑3 days.

  5. Day 13

    You check the product against the acceptance checklist.

  6. Day 14

    Production launch, with docs, a runbook and a measured LLM cost forecast.

Simon Sudarushkin, founder of Keelfast

Who does the work

I'm Simon Sudarushkin. Keelfast is my engineering practice: I read your code, write the report and make the fixes myself.

Experience
7+ years in software engineering
What I build
Production AI features: RAG search, agents, evals, fallbacks and per-request cost tracking
Stack
Python, FastAPI, TypeScript, Next.js, React, PostgreSQL, Docker
Based in
Kazakhstan, UTC+5. A written reply within 24 hours.

What if I'm not available?

Your code, tests, runbook and docs live in your repository from day one, so another developer can pick them up. I take one build per month, so your project gets my full attention.

GitHubLinkedInUpwork profile

The build guarantee

If I miss the agreed 14-day deadline, I keep working for free until it's done. And done is defined in writing before the start: the build passes the agreed acceptance checks and deploys to your production environment.

The deadline moves day for day only while I wait on you: for access, for feedback that takes more than two working days, or for an unpaid milestone. A change you ask for comes with its own written deadline.

Fair questions

Who actually does the work?

I do. I read the code, write the report and make the fixes myself. If a project ever needed another person, I would ask you in writing before they joined, and I would stay accountable for the result.

What if you disappear halfway through?

Your code, tests and docs are in your GitHub from day one. Payments go through Upwork escrow in milestones, so you release money only for work you have seen.

How do I pay?

Through Upwork. The Review is a fixed-price catalog project. A build is paid in three escrow milestones: 50% at the start, 30% after the day-8 demo and 20% at launch.

Do we need a call?

No. The brief, my questions, the price and the acceptance checklist are all written. The Review comes with a recorded walkthrough instead of a meeting.

Will the Review change my app?

No. It is read-only: I work from the code, configuration and docs, and I do not send requests that change data or cost you money. Any code change is a separate offer that you approve first.

Is AI-generated code safe? Who will maintain it?

AI helps me write code faster. It does not decide what is safe to ship. I review every change, test the critical paths, and keep the tests and CI in your repository so another developer can take over.

Can you sign an NDA?

Yes. Ask for it before you share confidential details.

What happens after the 14 days?

You get 30 days of free bug fixes, plus docs and a runbook. After that you can take over fully, since the code and infrastructure are already yours, or move to a Care Plan for monitoring, fixes and small improvements.

Start with the Review

Buy it on Upwork, share read-only access, and get the report in 3 to 5 days.

Get a Review from $250

For a new build, send the brief on Upwork or email me.