Senior Backend Engineer, Backend Platform (PHP and Python)

About the role

WHO WE ARE 🌍

Creating content that resonates is great — turning that attention into growth is even better. That's what Manychat does.

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.

WHO WE'RE LOOKING FOR 🌟

Some engineers own a feature. On Backend Platform, you'll own how the backend works for everyone.

We're looking for a Senior Backend Engineer who works across PHP and Python and wants a say in the bigger picture. You'll lead company-level projects, like our Auth Service: one authorization layer for PHP and Python that lets Python products handle their traffic directly, without going through PHP. You'll research first when things are unclear, weigh the trade-offs, write them down, then ship in small, safe steps. And you'll decide where code should live by what makes sense for the system, not by which language you know best.

Product teams will come to you for advice, reviews, and a way through when they're stuck. The team is still taking shape, so you'll also help define ownership, standards, and how we work. If that mix of deep technical work and influence across teams sounds like you, keep reading.

YOUR FUTURE TEAMMATES 👋

Meet the Backend Platform team:

We're a small team of engineers from core PHP, Infra, and AI backgrounds. We lead technical initiatives across the whole backend and own its health. Product teams build and run their own components, and we give them the tools, standards, and expertise to do it well. Each of us leads our own project, from planning to agreeing with other teams to production. We work in weekly cycles and write our decisions down. Right now we're bringing PHP and Python platform work together into one common backend platform.

WHAT YOU'LL DO 🚀

- Lead company-level technical projects end to end, from design and planning to rollout and support, like completing our Auth Service development and shaping authorization as a separate layer for PHP and Python.

- Shape the shared PHP and Python platform, and decide where each module should live by what makes sense for the system.

- Build the foundations that let new Python products launch and scale without being wired through PHP each time.

- Define clear ownership of technical components across the backend, including who owns monitoring and knowledge for each.

- Improve how we spot problems: bug and incident management, less noise in alerts and error tracking, and Grafana Cloud dashboards for how services interact.

- Find root causes across PHP and Python services using metrics, logs, and distributed tracing.

- Make performance part of everyday work, not something we fix after incidents: clear performance metrics, tools that show where things slow down, and analysis of unusual user behavior that causes degradation.