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Alexander Denisov

Software engineer in Lisbon, obsessed with AI-augmented dev workflows. I build side projects in public (hldays, pkoverlay, xmangax) and write about what I learn shipping them.

Location Lisbon, Portugal Joined Joined on  Personal website https://alexander-denisov.web.app/ github website

Education

MSc Computer Science, FCT NOVA

Building hldays #10: Docs that sell the API

Building hldays #10: Docs that sell the API

Comments
7 min read

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Building hldays #11: Shipping and monetising a side-project API

Building hldays #11: Shipping and monetising a side-project API

Comments
8 min read
Building hldays #9: The architecture, TypeScript on Cloudflare Workers

Building hldays #9: The architecture, TypeScript on Cloudflare Workers

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6 min read
Building hldays #8: Making an API agent-friendly with MCP

Building hldays #8: Making an API agent-friendly with MCP

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8 min read
Building hldays #7: Religious and cultural observances

Building hldays #7: Religious and cultural observances

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8 min read
Building hldays #6: Names are harder than dates

Building hldays #6: Names are harder than dates

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7 min read
Building hldays #5: Observed holidays and edge cases

Building hldays #5: Observed holidays and edge cases

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7 min read
Building hldays #4: Business days that know local holidays

Building hldays #4: Business days that know local holidays

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7 min read
Building hldays #3: A source on every record

Building hldays #3: A source on every record

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7 min read
Building hldays #2: Modelling holidays from country down to municipality

Building hldays #2: Modelling holidays from country down to municipality

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6 min read
Building hldays #1: I kept forgetting my municipal holiday, so I built an API for it

Building hldays #1: I kept forgetting my municipal holiday, so I built an API for it

Comments
3 min read
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