They talk to customers, deliver quality work, improve our tooling, and are ambitious. We strongly adhere to the Lean Startup and Agile principles, favoring action over analysis, imperfect iteration over perfect delivery, and face-to-face communication. Right now, bug resolution at haddock is handled by a squad of two product engineers who rotate every month.

It works, but it doesn't scale: twelve onboardings a year into the work that needs the most context, variable throughput month to month, and a backlog that goes down when we add people and back up when we take them away. We're replacing that with a permanent Product Reliability Engineering team, and you'd be the first hire and the one who builds it. You'll lead two engineers plus a rotating seat from the product engineering team.

This is a hands‐on role where 75% of your time is expected to be spent doing software engineering work. Conceptually, it's similar to a Support Engineering team, but so empowered with AI that we ambition going beyond "just fixing bugs", but actually creating the system and tooling to make haddock highly reliable and have issues quickly fixed. Here's the part that matters most, and we want to be direct about it: your mission is not to close more tickets.

It's to make the inflow shrink. Internal tooling for data correctness. Tools to fix data in bulk without hand‐written SQL, and detection that catches incoherent data before the customer does. Quality accountability stays with the people who ship.

Two engineers, their onboarding and their growth, plus a rotating product engineer. Attacking proactively high-volume classes of problem that you detect, like a flaky connection to Square or data correctness issue with AI-digitized documents. It's much more fun and motivating than joining an already established scale up or corporation where your role is very defined and limited!





This is the first Product Reliability Engineering role at haddock. If you've been the escalation engineer inside a scale-up company and thought "I could run this function properly if it were mine", it can be. Our customers are restaurants, many of them in Barcelona, and when our data is wrong someone's margin is wrong.

The feedback loop is short and real, and it's very rewarding to fix things for a restaurant you like. 5+ years of engineering experience, at least some of it in a SaaS startup or scale up. ~ You've mentored or led at least 2 engineers. Fluent in Spanish and comfortable in English. We tend to speak Spanish at the office and in Slack, and write documentation and projects in English. haddock is the market leader solution for point of control in restaurants, handling all back‐office vital operations like product management, inventories, purchases, price tracking, document conciliation, bank conciliation, paychecks, clocking in/out, P&L; reports, etc.

Not only we have a system of record that helps operate restaurants with control and clarity, but we're also the leaders in offering AI Agents, starting with Fina. Our vision is to lead the market through innovation, strong relationships and by becoming the go‐to tech partner for restaurant success. haddock is backed by Y Combinator, the accelerator behind Airbnb and Twitch. Learn about our business and story on Itnig, Por qué el 90% de los restaurantes fracasa en menos de 2 años.

Many of our restaurants are based right here in Barcelona, and they love haddock. First and foremost, the project itself is the main reason why people join haddock: a growing startup with ambition, product‐market fit, and great culture. A bright modern office in Barcelona, in Poblenou.

Probably the best office you've ever worked at. Hybrid work, with 2 days at the office to build trust, collaborate, align and get creative.

📌 Lead Software Engineer — Product Reliability Engineering (Barcelona)
🏢 haddock (YC W22)
📍 Barcelona