AI-Powered Test Harness Engineer

Allata; Tandil; On-site; ARS 900,000 - 1,500,000; Full time

Job summary

Allata is seeking a Test Harness Engineer to design and build AI-powered testing systems for a growing product platform. You’ll develop harnesses where agents plan, execute, validate, and analyze tests, collaborating with engineering and product teams in a fast-paced environment.

You will combine software engineering with automation, exploratory testing, and a product mindset, making architecture and tooling decisions and owning quality from design to release. Fluency in English required.

Qualifications

• Proven background in software engineering or test automation.
• Hands-on experience building AI agents or agent-based workflows.
• Experience with at least one agent orchestration framework (LangGraph, LangChain, CrewAI, or similar).
• Strong JavaScript/TypeScript skills, with knowledge of Python or Java.
• Hands-on experience with UI and API test automation tools (Cypress, Playwright, REST Assured, Postman/Newman, Karate).
• Experience testing REST APIs and asynchronous, event-driven systems.
• Experience with SQL/NoSQL databases for test data setup and validation.
• Experience integrating automated tests into CI/CD pipelines.
• Fluent English.

Responsibilities

• Design and extend AI-powered test harnesses where agents plan, execute, validate, and analyze test scenarios
• Integrate LLMs with tools, APIs, and automation frameworks, with evaluation and guardrails to prevent false positives
• Build and maintain automated UI, API, and integration test suites that run reliably in CI/CD pipelines, keeping them fast and maintainable
• Turn Jira acceptance criteria and Figma designs into test plans, and run exploratory, regression, and functional testing across QA and UAT
• Identify and communicate defects with clear reproduction steps and evidence, and drive triage with developers and product
• Use AI tools to accelerate test design and failure analysis, critically validating their output
• Mentor engineers on harness design and automation practices

Skills

Software engineering

Test automation

AI agents

Agent orchestration

JavaScript/TypeScript

Python/Java

CI/CD

UI/API testing

REST APIs

SQL/NoSQL

Fluent English

Tools

Cypress

Playwright

REST Assured

Postman/Newman

Karate

Job description

Allata is seeking a Test Harness Engineer to design and build AI-powered testing systems for a growing product platform. You’ll develop harnesses where agents plan, execute, validate, and analyze tests, collaborating with engineering and product teams in a fast-paced environment.

You will combine software engineering with automation, exploratory testing, and a product mindset, making architecture and tooling decisions and owning quality from design to release. Fluency in English required.