Member of Engineering (Agent Harness)

ABOUT POOLSIDE

Poolside exists to build a world where AI will be the engine behind economically valuable work and scientific progress. We believe the fastest way to reach AGI lies in accelerating software development itself, by reshaping the developer experience with agentic systems, coding assistants, and the frontier models that power them. We deploy these systems directly into the development environments of security-conscious enterprises.

ABOUT OUR TEAM

We were founded in the US and have our home there, but our team is distributed across Europe and North America. We get our fix of in-person collaboration in Paris each month for 3 days, always Monday-Wednesday, with an open invitation to stay the whole week. We also do longer off-sites once a year.

ABOUT THE ROLE

You'll join our Applied Research Engineering group to help build poolside's coding agents. Your work will center on building the core agent framework, the supporting tools, and the orchestration environment needed to run coding agents securely, reliably, and at scale.

We're looking for strong software engineers with a passion for building reliable, high-performance systems. Experience (or strong interest) in AI coding agents is a significant plus.

In this role, you'll collaborate closely with our product engineering and research teams to continuously build and improve our platform for coding agents.

YOUR MISSION

Help us design and deliver the most capable AI agents for software engineering tasks, pushing the boundaries of what AI agents can do.

RESPONSIBILITIES

• Design, build, and maintain the core framework for poolside's coding agents.
• Develop scalable, secure, and isolated runtime environments to run agents in complex enterprise environments.
• Collaborate with research and product teams to prototype, develop, and evaluate new agent capabilities.
• Continuously improve the performance, reliability, and developer experience of our platform.

SKILLS & EXPERIENCE

• Solid understanding of AI agents, or a strong interest in developing expertise in this area.
• Strong programming skills in either Go, C, C++ or Python (we are open to polyglot engineers from other languages).
• Plus: Experience in large scale, distributed data systems.
• Plus: Familiarity with container runtimes, microVMs, or sandboxing systems.

BENEFITS

• Fully remote work & flexible hours.
• 37 days/year of vacation & holidays.
• Health insurance allowance for you & dependents.
• Company-provided equipment.
• Well-being, always-be-learning & home office allowances.
• Frequent team get togethers.
• Diverse & inclusive people-first culture.