Python dev to build a product-feed generator (TSV, Google Shopping-style)

TITLE: Python dev — build a product feed generator (Miinto TSV, Google-Shopping-style) ABOUT THE WORK We sell across several European marketplaces and are bringing our product feeds in-house. First project: a generator that turns our product data into a valid Miinto product feed and serves it for Miinto to fetch. Miinto provides a feed validation tool (FAS) and we have a reference feed, so "done" is objectively measurable. Self-contained; if it goes well there's ongoing feed work for other marketplaces. WHAT YOU'LL BUILD (Python) 1. A feed generator: read product/variant rows we provide (a sample file + a field-to-column mapping spec) and emit a valid Miinto feed: • TSV, UTF-8, Unix line endings, header row, case-sensitive column names • One row per variant; variants of a product share item_group_id • Dynamic columns driven by config: one price column per currency (c:retail_price_CUR:integer) and per-language title/description columns • Prices as integers with cents embedded (1000.99 to "100099"); empty, never 0, when absent • Multiline descriptions quoted; image URLs percent-encoded • ALL mandatory + optional columns present in the header 2. Hosting: serve the file at a fixed URL over HTTPS with HTTP Basic Auth. 3. Validation: the feed must pass Miinto's FAS (Feed Analysis Service) tool with no blocking errors, and match the structure of the reference feed. You do NOT need product/catalogue knowledge: category mapping, colour/size normalization, titles and translations are resolved on our side and handed to you as values + a mapping spec. Your job is the transform, hosting and validation. ACCEPTANCE CRITERIA • Generates from the sample data via a single command, no errors. • Passes Miinto FAS with no blocking errors. • Output column set + structure match the reference feed and Miinto's spec. • Currencies/languages are config-driven (adding a market = config change). • Clean, documented Python; unit tests for the transform (price encoding, quoting, URL-encoding, dynamic columns, variant grouping). • Delivered as Pull Requests in a private GitHub repo we provide. YOU MUST HAVE • Strong Python (data transformation; CSV/TSV; precise text/encoding handling). • Experience with product/marketplace feeds (Miinto, Google Shopping, Mirakl, Channable/Koongo-style, or similar). • Git / GitHub Pull Request workflow. • Careful, test-first style — correctness of encoding and structure is the job. NICE TO HAVE • Prior Miinto experience. • Postgres / SQL (production source is a database view). HOW WE WORK • You work in a private repo we provide (spec, sample data, interface stub, acceptance criteria, Miinto docs). You open PRs; we review inline. • You self-validate with Miinto's FAS tool — no marketplace credentials needed. ENGAGEMENT Fixed-price, milestone-based. PLEASE INCLUDE IN YOUR PROPOSAL 1. A product feed you've built — and how you validated the output was correct. 2. How would you make currencies/languages config-driven, and what unit tests would you write for a feed transform? 3. Your estimate (hours / price) for the work above.