Senior Backend Engineer at Replo (S21) Sell anything San Francisco Full-time US citizen/visa only About Replo Replo is the commerce platform for the AI age. The web continues to be the most profitable customer acquisition channel for selling goods and services. Over the past two decades, SaaS products like Squarespace and Shopify have dominated online commerce. They've made it easier to set up an online store, but at their core, they're just CRUD apps built on top of payment processors. You still have to design and build the shop, make ads, write copy, analyze data, and keep iterating until you find a channel that works. This often means spending millions on design, development, marketing, copywriting, ad buying, and more. What if all this could be done for you? Replo designs and launches your shop and entire marketing campaign, and within a few days provide data about what you should change. We are building an ecommerce specialist in everyone's pocket. Tell us what you're selling, and we will sell it for you — whether that's Tums during the Super Bowl (we did this!) or United Airlines tickets to Tahiti. To date, we’ve raised over $8.2M from Figma, YCombinator, Vercel, General Catalyst, Infinity Ventures, MAGIC Fund, Base Case Capital. We grew from 5 to over 3000+ customers in less than 18 months. We're headquartered near Union Square in San Francisco. About the role About the role Hiring a senior backend engineer to join our team and focus on system architecture our most popular products. Things you'll be working on Architecting and implementing backend systems in Typescript/Node is the core of what you’ll be doing. Real examples include — Designing and building an ingestion pipeline for our analytics/insights products (> 99.99% uptime on Kafka, Clickhouse, Redis) Spiking on our CI/CD to improve stability Build out durable/distributed cart/hosting for our ecommerce product Deploying a multi-tenant NextJS app for shops in Cloudflare Mentoring junior engineers on best-practices Looking for someone who Can be in office 3-4 days/week in San Francisco Has deep knowledge in distributed systems and SOA — load balancers, databases, queuing, caching, HTTP, APIs, high-availability, fault tolerance, redundancy, at-least-two-of-everything Down to do full-stack work (including frontend even if it's not your main role) Is ALWAYS SHIPPING. We don't spend weeks planning features at Replo Has 4+ years of professional experience with production distributed systems, service oriented architecture Proficient in Typescript. If you have experience writing these systems in Python/Go/Java that’s cool too, as long as you’re willing to learn Typescript/Node — the learning curve on writing TS isn’t that high for high-caliber engineers. Experience or working knowledge of React is great too, but we can teach you that if we need to Has a product and customer-focused mindset Has experience being burned by deployment and maintenance issues. If you have a a strong opinion on how backend systems should be built, that’s good Values writing clean, maintainable software, including documentation (e.g. the code needs to be correct and run fast, but we’re the ones that have to read it and understand it) Is comfortable with ambiguity and defining software architecture patterns to solve customer pain points Bonus points if you Have started a company before Enjoy attending hackathons Worked at an early-stage (Series A or earlier) startup previously Have not wasted hours interview-prepping on Leetcode Have an eye for visual design (or past experience in product design, Figma, etc) Technology We use Typescript/Node/React aggressively. We deploy on Fly.io and Vercel. If you hate Leetcode as much as we do, let's chat.