About

I build, investigate and stabilise production systems.

I'm Olha Shevchenko, based in Kyiv. My work has moved from commerce platforms and integrations into SaaS backends, AWS infrastructure and operational tooling.

Commerce work brought together catalogues, orders, external services and migrations. Later roles involved APIs, background processing and applications with several user roles and interfaces. Across those environments, I have worked on both the implementation and the supporting deployment and test infrastructure.

My main environment today is Node.js, TypeScript and AWS. The investigation follows the system across its boundaries: an application symptom can lead into a database, a queue, a permission rule or a deployment setting.

Audits and engineering delivery

In an audit, I establish what the available evidence supports, identify the gaps and explain what deserves attention first. The report should leave your team able to decide what to do next.

Implementation is a separate scope. When I take it on, the work includes agreeing the intended behaviour, making the change and checking the result. Where verification is incomplete, that limitation belongs in the handover.

Remote engagements, delivered in English, with working-hour overlap agreed at the start.

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