Senior Software Engineer

Overview

RevenueCat removes the headaches of building and scaling in-app subscriptions. Since graduating from YC's S18 batch we've grown into the default monetization platform for mobile.

Job Description

We're a remote-first crew of 150+, spread across 25+ countries, and guided by values we actually practice: Customer Obsession, Always Be Shipping, Own It, and Balance.

Responsibilities

• - Ship your first agent feature and get familiar with the architecture, tool ecosystem, and how Rico talks to RevenueCat's APIs.
• - Identify the biggest reliability or performance gap and start fixing it.
• - Meet with the team, get set up with repos, dev environment, and debugging tools.
• - Familiarize yourself with RevenueCat dashboards, logging, debugging tools, cloud providers, infrastructure management and general architecture.
• - Launch a brand new agentic feature to tens of thousands of developers.
• - Own a core infrastructure area - orchestration, eval pipeline, tool framework, or the trust/permissions layer.
• - Be able to scope and work on projects self-sufficiently.
• - Learn the basics of incident response and be part of the on-call rotation.
• - The agent is measurably more reliable, faster, and capable because you're here.
• - You've built infrastructure that the rest of the team ships agents with.
• - Review code, create proposals, and contribute to architectural discussions.
• - Have shipped a major product or feature.
• - RevenueCat is an AI-native company. You built the engine underneath it.
• - Know all the major components of our agent system and be able to debug complex issues.
• - Have your own initiatives for improving our agent products, understanding the current issues and priorities.
• - Mentor other engineers joining the team.

Required Skills

• - 5+ years of experience shipping production systems.
• - Hands-on experience building with LLMs - not just prompting, but building the systems around them: tool use, structured output, context management, evaluation, orchestration.
• - Strong backend fundamentals.
• - Built systems that need to be reliable, observable, and secure.
• - Comfortable with ambiguity.
• - Self-directed. You figure out what needs to be built, build it, and ship it.
• - Collaborate well with others and can communicate effectively in a fully-remote culture.
• - Bonus: Experience with OpenAI/Anthropic APIs specifically.
• - Built agents that other people use.
• - Experience with evaluation and observability frameworks (Langfuse, Langchain, etc).
• - Familiarity with subscription business models, app stores, or developer tools.
• - Built Slack integrations or other conversational interfaces.
• - Contributions to open-source AI/ML tooling.

Benefits

• - Competitive equity in a fast-growing, Series C startup backed by top-tier investors, including Y Combinator.
• - 10-year window to exercise vested equity options.
• - Fully remote and flexible work environment.
• - 4-5 weeks of suggested time off annually for mental, physical, and emotional recharge.
• - $2,000 USD for workspace setup and $1,000 USD annual stipend for continuous learning.