AI Product Engineer – Agent & Integrations

Ensemble IP

. Extend Duet's agent harness by integrating new data sources .

Posted 10/22/2026full-timeRemote • SpainMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in TypeScript and Node backend development, with a strong focus on integrating complex tools and data sources into LLM agents. Demonstrates effective communication and collaboration skills to translate user needs into actionable delivery plans.

Highest-signal resume keywords

TypeScript DevelopmentNode Backend SkillsLLM Agent IntegrationPrompt EngineeringAPI Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringTypeScriptNode.jsPrompt EngineeringAPI IntegrationSystem ArchitectureData Source IntegrationIncremental DeliveryVersion ControlContext Management

Soft Skills

CommunicationCollaborationTeamworkProblem-SolvingAdaptability

Tools & Technologies

RedisStreaming TechnologiesAgent FrameworksDevelopment ToolsVersion Control Systems

Industry Keywords

Software DevelopmentAgile MethodologiesCustomer-Focused SolutionsData IntegrationUser Experience

Tech Stack

Tools & technologies

Node.jsRedisTypeScript

About the role

Key responsibilities & impact

Extend Duet's agent harness by integrating new data sources
Design and implement MCP access to Duet functionality
Write thin TypeScript connectors and wire them into the agent as composable tools
Understand new data sources and determine efficient integration approaches
Author and iterate on system prompts, tool designs, and skill definitions
Develop the architecture linking prompts, tools, and skills
Extend and improve the production agent loop
Work on context management, streaming, Redis locks, billing, and user presentation
Translate user needs into staged delivery plans that provide value in each sprint
Collaborate with patent analysts and the development team to build customer-focused solutions

Requirements

What you’ll need

Fluency in written and verbal English
3+ years professional software engineering experience
Strong TypeScript/Node backend skills
12+ months building LLM agents, with an emphasis on integrating and orchestrating complex tools and data sources
Track record of delivering outcomes efficiently
Incremental delivery discipline: decompose work so each PR adds user value or represents a deliberate milestone
Demonstrated prompt engineering as product work, including structured prompts, iteration from failure modes, and version control
Experience integrating third-party APIs into an agent framework
Excellent written and verbal communication with a focus on teamwork and collaboration

Benefits

Comp & perks

Remote and co-working options
Co-work location in Gracia, Barcelona