Senior Backend-Developer – Agents (100% Remote)

Role overview Design and improve backend systems for autonomous assistants that handle customer support workflows through tickets and phone calls. The work spans agent behavior, tool and knowledge design, voice interactions, and the infrastructure that makes language model features reliable, responsive, and cost-aware. You will help determine when agents can complete a task independently and when they should hand it to a person.

Responsibilities - Develop ticket-triggered agents that can handle complex cases, follow defined processes, and escalate appropriately. - Improve how agents interpret requests and use a large set of tools, including decisions about prompts and reusable skills. - Evolve a built-in knowledge base and improve how agents retrieve, use, and potentially learn from its content. - Build and refine voice agents that handle phone conversations using the same underlying agent capabilities as text workflows. - Improve language model infrastructure through model selection, caching, streaming, retries, context management, retrieval, usage tracking, cost controls, and evaluations.

Requirements - More than two years of experience building production AI agents. - Evidence of shipping agentic features that real users depend on, with informed views on retrieval, evaluation, tool design, and model limitations. - Fluent English and the ability to take independent ownership of work. - A bias toward building and shipping useful initial versions, then improving them. - Interest in current AI models and research, and comfort using AI to write most of your code. - Adaptability and comfort working across different problem areas; a particular technology stack is not required.

Nice to have - Familiarity with TypeScript, Convex, the Vercel AI SDK, or agent frameworks is relevant to the described environment. - Experience with voice-agent systems or retrieval-augmented generation would support several areas of the role.

Benefits and work setup - Fully remote work with flexible hours and an employment contract in your country of residence. - Monthly pay is listed as $2,000–$4,000 before tax, with potential for growth. - Health insurance, access to AI coding tokens, and a small team with direct ownership and fast decisions.