Fountain builds workforce management software for the world's largest hourly employers. We are an agent-first engineering organization where coding and review agents are integrated into our daily workflow. Our platform team builds the critical systems that enable engineers and agents to ship dependable products at scale. What You’ll be Doing:As a member of our compact platform squad (currently four engineers), you will develop the foundational systems that power the entire Fountain ecosystem. Responsibilities include:- Ship platform capabilities across all customer and internal products- Own performance, security, and stability for high-traffic production systems- Enhance agentic systems, including coding agents and observability tools- Lead architectural decisions for human and agentic interfaces- Design reliable code, APIs, and contracts for humans and agents- Collaborate with product and engineering teams to deliver customer impact- Work autonomously with product managers and designers- Identify problems, ship fixes, and own outcomes like an early-stage product team What you bring:- 5+ years in professional engineering, primarily backend, with a track record of launching production systems- Expert-level systems design and ability to identify and re-engineer misaligned systems- Strong discernment for technical trade-offs, UX, APIs, and code; raise standards across teams- Demonstrated experience with agentic or LLM-based systems beyond consumer use; experience with evals and failure modes- Initiative and ownership; thrives in autonomous, ambiguous environments- Excellent written communication across time zones Nice to have:- Designed APIs/tools for agents (structured outputs, deterministic surfaces, observability)- Early-stage product or startup experience- Event-driven architectures, monorepos, and/or platform-level observability