About the Company
Elfster is the free way for friends, families, and coworkers to organize a Secret Santa, run any gift exchange, and build wishlists everyone can actually shop from. Since 2000, more than 47 million gift givers across 50+ countries have used the platform to draw names, manage exchanges, and shop for the people they care about.What makes engineering here interesting is the shape of the traffic. Elfster is one of the most seasonal consumer platforms you will work on: a large share of the year’s activity compresses into the weeks between early November and late December, when millions of people create exchanges, draw names, post wishlist items, and get notified — often within the same few hours on the same few days. The system has to stay quiet and cost-efficient for most of the year, then absorb an order‑of‑magnitude jump in RPS on a schedule everyone can see coming. Designing for that is not a background concern here; it is the central engineering problem.We are a small, senior team. That means real ownership, short paths from idea to production,



and no layers between you and the decisions that matter.
About the Role
We are hiring a Senior Backend Engineer to bring deeper platform and scalability depth to our backend group.This is a peer role alongside our existing backend engineers who already carry infrastructure scope — not a layer above them. They own services end to end, ship features, and run what they build in AWS. You will do the same. The difference is the depth you bring to the platform layer underneath all of it: the data stores, the messaging backbone, the analytics pipeline, and the capacity thinking that determines whether peak season is uneventful or not.Concretely, you will be the engineer the team leans on when the question is “will this hold in December?” — and the one who turns that answer into architecture, load models, runbooks, and instrumentation rather than a hunch. You will also make that depth transferable: design docs other

📌 Senior Backend Engineer — Platform (Argentina)
🏢 TurnKey Labs
📍 Argentina