Europe based candidates | Remote
A-Players is helping Poolday hire a Senior Agentic Software Engineer to build the core agent systems behind a next-generation AI-powered video editor. Poolday is creating a new category of creative tooling that combines a traditional timeline-based editor with autonomous AI agents that can understand intent, generate visuals, and manipulate projects end-to-end.
This role will work closely with the founders and early engineering team to design and implement the agentic architecture that powers the product. This is a high-ownership position with significant influence over system design, product direction, and engineering culture.
About Poolday
Poolday is building a modern video editor where users describe what they want, and intelligent agents assemble compositions, generate pixels, and perform edits autonomously. The product blends familiar creative workflows with cutting-edge agentic AI systems.
The founding team consists of experienced operators and builders with a strong track record of shipping complex products. Poolday is early-stage, product-driven, and focused on building category-defining creative tools.
What You’ll Be Doing
Designing and building multi-agent systems in TypeScript, including a primary orchestration agent and specialized sub-agents
Architecting agent workflows that interpret user intent, plan multi-step edits, and execute them across a video timeline
Building the interface layer between agents and the video editor, enabling agents to read project state, issue commands, and observe results in real time
Developing agent capabilities for scene composition, visual generation, timing adjustments, effects, and compositing
Implementing plan-and-execute loops, recovery strategies, and feedback mechanisms for reliable autonomous editing
Creating memory and context systems that allow agents to reason about project state, user preferences, and editing history
Working closely with founders to shape both the product vision and the technical foundations of the platform
Must-Have
5+ years of professional software engineering experience with strong system design skills
Deep expertise in TypeScript, including building large, maintainable codebases
Experience building complex front-end or editor-like applications using React
Hands-on experience with agentic systems (e.g. LangChain.js, LangGraph.js, Vercel AI SDK, or custom agent frameworks)
Strong understanding of agent orchestration patterns such as hierarchical delegation, multi-agent collaboration, and plan-and-execute loops
Experience designing APIs or command layers to programmatically control complex applications
Strong prompt engineering skills, including function calling and structured outputs
Ability to work independently in ambiguous, fast-moving environments
Nice to HaveExperience with video editing software, motion graphics, or creative tooling
Familiarity with generative Al for images or video
Experience building plugin systems or extensible application architectures
This is a chance to help define how AI agents will power creative tools. You’ll work on a product where users describe an idea and watch agents build it - composing scenes, generating visuals, and assembling edits autonomously.
Poolday offers real ownership, deep technical challenges, and the opportunity to shape a product from early traction to scale.
