Founding AI Engineer

Who We Are 🌍 

Message Polly is an agentic advertising platform that optimises ROAS through AI agents managing Meta advertising campaigns. Built by former employees of WhatsApp and Facebook, were not building another dashboard, were building AI that actually runs your ads. Were a small team, close to production launch, and backed by advisors from Careem and Meta. Join us to build the AI systems that will change how advertising works.

Who You Are 🌟 

Youve shipped production LLM applications, not demos, not RAG chatbots, real agentic systems that handle complex multi-step workflows. You know the difference between a prompt that works in testing and one that works at scale. Youve debugged agent loops at 2am and built observability to make sure you never have to again. You want to own the AI layer of a product, not just contribute to it.

What Youll Do 🚀

• Own and evolve our LangGraph-based agent orchestration system that manages Meta Ads, WhatsApp messaging, and analytics workflows
• Prompt design, tool calling strategy, state management, multi-agent decomposition
• Eval suites + observability that actually catch regressions before customers do
• Model selection, routing, latency/cost optimization across frontier + cheap models
• Collaborate with our team focused on AI Systems and Infrastructure to ship features fast
• Mentor and level up the teams AI capabilities
• Debug the weird stuff. Because agents do weird stuff

What Youll Bring 💥 

Required:

• 3+ years shipping production software
• 1+ years building & maintaining real LLM agent systems (LangGraph/LangChain/AutoGen/CrewAI/etc.)
• Strong Python + async/FastAPI
• Production experience with LLM observability (LangSmith, Langfuse, Phoenix, Helicone…)
• Battle-tested prompt engineering and deep understanding of agent design trade-offs
• Excellent async written communication (remote-first)

Nice-to-Have:

• Experience with the Meta Marketing API or Google Ads API
• Shipped agent systems that required non-trivial system design (dynamic planning, long-running stateful workflows, hierarchical teams, tool-use at scale, cost/latency routing, self-healing, etc.)
• Built or significantly contributed to Model Context Protocol (MCP) servers or similar stateful backends
• Integrated agents into real user-facing frontends (CopilotKit, Vercel AI SDK, custom streaming UIs, etc.) — you don’t need to be a designer
• Background in adtech, performance marketing, or growth
• ClickHouse or similar columnar/OLAP experience

What We Offer 🤗

• Competitive Compensation: Transparency is key at Message Polly. We provide a competitive salary package designed to reflect your impact, ensuring financial reasons wont be why you leave.
• Employee Stock Options (ESOP): Have skin in the game and get a stake in our success. As we grow, so does your share in the company.
• Home Office Setup: We believe in equipping you for success. From laptops and screens to ergonomic chairs and lighting, we cover the essentials for a top-tier home office.
• Annual Offsite: Once a year, we gather for an unforgettable retreat. Expect team-building, relaxation, and a few cocktails under the sun.