Senior Python Engineer, Manychat for Brands Barcelona, Barcelona, Spain Creating content that resonates is great — turning that attention into growth is even better. Our AI-powered automations help creators and brands engage with audiences across Instagram, Messenger, WhatsApp, and TikTok — at the right moment, with the right message, minus the manual work. We're 400+ people across three continents behind the leading platform for conversational growth, with AI skills shaping how we build, how we work, and how we grow.

You've built backend systems at real scale before — you know what breaks under load and how to design around it early. You make the call on a fuzzy problem, defend it, and adjust as you go, with an entrepreneurial streak that thrives on building something from scratch. You want a direct line to the people using what you build and you judge your work the way they do: by whether it actually moves the metric.

We've built Manychat into the #1 chat platform. Now we're moving forward and building a new product, Manychat for Brands, from scratch: architecture, infrastructure, all of it. We shape what gets built and talk to our users directly — code quality matters, but the real impact we make for our customers matters more.

As the product grows, you grow with it, with room to lead your own scope.

Build

Manychat for Brands from the ground up — the product brands use to run campaigns with creators: inviting them, handling consent, connecting their automations and data. Ship to real design partners in your first weeks. You're in the partner channels, you see it break, you fix it — no layers between you and the user.

Own problems that aren't solved yet: observability from zero, migrating off fragile infra, cutting PHP dependencies,



auth and permissions, scaling data pulls that are already slow. Build on Manychat's production infrastructure, serving millions of users — real scale from day one. Judge your work by whether it lands for brands and creators — watch the metrics as closely as the code. 8+ years building backend systems in Python.

Deep FastAPI experience (or a similar modern framework) — designing services and data models, not just endpoints.

Experience designing systems and defending the trade-offs: boundaries, what to build now vs later, where it'll hurt.

Experience building for real load — knowing what breaks at scale and how to avoid it. Comfort operating before a clear spec exists, helping shape the product as it comes together.

Experience building something from scratch — or the itch to finally do it. Hybrid onboarding to start work remotely and relocation support for you and your family. Comprehensive health insurance for both you and your family.

Professional development budget for conference tickets, online courses, and other relevant resources to help you grow. You get a budget and you decide where it goes, from health and wellbeing to family and setting up your home office. Hybrid work and generous, versátil time off — planned with your team, not rationed by a rigid quota.

In-office perks, including free meals and snacks. AI isn't a perk here — it's how we work. We do not discriminate against qualified employees or applicants because of race, color, religion, gender identity, sex, sexual preference, sexual identity, pregnancy, national origin, ancestry, citizenship, age, marital status, physical disability, mental disability, medical condition, military status, or any other characteristic protected by local law or ordinance.

📌 Senior Python Engineer, Brands Barcelona, Barcelona, Spain
🏢 Manychat
📍 Barcelona