RYZ Labs is looking for a Senior Full-Stack Software Engineer to join one of our client’s teams, a performance advertising company

You'll ship features into a live PHP monolith that runs a performance advertising business, and you'll help design the services they break out of it. The work starts in the monolith, because that's where the business runs today — and the decisions you make there are what the next architecture gets built on.

Basic Qualifications:

• 7+ years building and operating production web applications

• Deep PHP experience in a long-lived, server-rendered application you were responsible for

• You've shipped and operated an integration against a major ad platform's API — Meta, TikTok, Snapchat, or Google/YouTube. We mean the real thing: rate limits and backoff, token rotation, async report jobs, version deprecations, backfilling after an outage

• You can talk credibly about normalizing data across more than one ad platform — where the object models refuse to line up, why the same campaign reports different numbers in two places,



and how you decide which one billing gets to believe

• Strong vanilla JavaScript, and comfort in a modern component framework — you'll be introducing one, not inheriting one

• You've owned a system where a bad change costs real money, and you can talk about blast radius, rollback, and how you verify a data change before you run it

• Self-directed across time zones, and clear in writing

What makes you stand out:

• Production Go

• Background job and queue systems — retries, idempotency, work that survives a reboot

• An understanding of how commercial media-buying automation platforms are built. You don't need to have built one. We want someone who can reason about how those systems work and what's worth building versus buying

• Dense operational UI — data grids, bulk actions, review queues, spreadsheet export. This is what our ad ops team stares at all day

• Docker and twelve-factor instincts

• Shipping AI-back

📌 Senior Full-Stack Software Engineer (Buenos Aires)
🏢 Ryz Labs
📍 Buenos Aires