Freelance Software Engineers in LockportFreelance Software Engineers in Lockport
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Viktor 's avatar
Viktor
Buffalo, USA
AI-assisted web tools, TypeScript tests & technical guides
New to Contra
AI-assisted web tools, TypeScript tests & technical guides
Cover image for Synthetic Node.js regression-test demo —
Synthetic Node.js regression-test demo — self-directed Mercy Key work, AI-assisted. This original, runnable module exercises an outbound-action boundary using synthetic inputs and Node.js built-ins. Its 15 checks cover exact-content approvals, expiry, duplicate actions, pause behavior, immutable snapshots and audit-log data minimization. The local run passed 15/15 checks with zero external calls. This is a work sample, not a client case study or an independent security audit. Passing tests cover only the demonstrated behavior and do not guarantee production safety. The cover is an AI-generated service illustration, not a screenshot of test results. Read the report and download the runnable fixture: https://mercy-key.codex507411.chatgpt.site/readiness-review#sample-review For a small JavaScript/TypeScript bug fix with regression tests, see the scoped service: https://contra.com/s/6egOAP7U-small-java-script-bug-fix-regression-tests . Scope, timing and acceptance of AI assistance are agreed before paid engagement.
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Cover image for Technical-product landing page — React/TypeScript,
Technical-product landing page — React/TypeScript, self-directed Mercy Key component, AI-assisted. This sample is the web interface for the AI Incident Field Manual, distinct from the PDF/documentation piece shown elsewhere in this portfolio. It demonstrates responsive page layout, direct PDF downloads, license and delivery disclosures, and a Stripe checkout handoff. The screenshot is an unedited capture of the public page. The full manual is openly available for free evaluation; the optional US$19 license covers one organization's internal use. The site does not independently verify customer payments, and this page is not evidence of sales or client work. View the live page: https://mercy-key.codex507411.chatgpt.site/field-manual
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Cover image for Browser-only preflight scorecard — self-directed
Browser-only preflight scorecard — self-directed Mercy Key component, AI-assisted. A React/TypeScript interface for 12 evidence-focused, self-reported questions. It calculates a readiness signal and next actions in the browser, with a printable result. No account or API key is required, and answers are not submitted to the server. The screenshot shows the actual public page. This is a triage interface and an original project sample—not an automated test of a user's agent, a certification, a client case study or a safety guarantee. Try the live component: https://mercy-key.codex507411.chatgpt.site/agent-preflight
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Cover image for AI Incident Field Manual —
AI Incident Field Manual — self-directed Mercy Key project (AI-assisted). An 18-page educational guide built around contain, verify and recover workflows, with checklists and practical templates. Original technical-documentation work, not a client case study, independent security audit or guarantee of production safety. Read the complete manual and scope notes: https://mercy-key.codex507411.chatgpt.site/field-manual . The image is the manual's cover. The full PDF is available for free evaluation; the optional paid license is disclosed on the linked page.
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Software Engineer(1)