{"id":4033194,"url":"https://alion.io/job/allata-test-harness-engineer","title":"Test Harness Engineer","company":{"id":1797570,"name":"Allata","domain":"allata.com","url":"https://alion.io/company/allata","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"QA","role_family":"QA","seniority":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":["AR"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"CrewAI","optional":false},{"name":"Cypress","optional":false},{"name":"Figma","optional":false},{"name":"Function Calling","optional":false},{"name":"JavaScript","optional":false},{"name":"Jira","optional":false},{"name":"LangChain","optional":false},{"name":"LangGraph","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"OpenAI","optional":false},{"name":"Playwright","optional":false},{"name":"Postman","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"Rest-Assured","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Gatling","optional":true},{"name":"k6","optional":true},{"name":"Model Context Protocol","optional":true}],"status":"live","first_seen_at":"2026-11-10T15:48:32Z","employer_posted_date":"2026-11-10","last_verified_at":"2026-11-10T19:17:24Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"We're looking for a Test Harness Engineer to join a client product team and design and build the testing systems that protect the quality of a growing technology platform. This role goes beyond writing test scripts: you will build AI-powered test harnesses where agents help plan, execute, validate, and analyze testing activities.\nYou'll combine strong software engineering with automation, exploratory testing, and a product-oriented mindset. You'll collaborate closely with engineering and product teams in a fast-paced environment where quality is a shared responsibility and continuous improvement is highly valued. You will make architecture and tooling decisions and take ownership of quality from design to release.\nResponsibilities:\nDesign and extend AI-powered test harnesses where agents plan, execute, validate, and analyze test scenarios.\nIntegrate LLMs (OpenAI, Claude, Gemini, or similar) with tools, APIs, and automation frameworks, with evaluation and guardrails to prevent false positives.\nBuild and maintain automated UI, API, and integration test suites that run reliably in CI/CD pipelines, keeping them fast and maintainable.\nTurn Jira acceptance criteria and Figma designs into test plans, and run exploratory, regression, and functional testing across QA and UAT.\nIdentify and communicate defects with clear reproduction steps and evidence, and drive triage with developers and product.\nUse AI tools to accelerate test design and failure analysis, critically validating their output.\nMentor engineers on harness design and automation practices.\nRequirements:\nProven background in software engineering or test automation, including designing QA automation frameworks that teams rely on in production.\nHands-on experience building AI agents or agent-based workflows, including tool/function calling, context management, and prompt engineering.\nExperience with at least one agent orchestration framework (LangGraph, LangChain, CrewAI, or similar).\nAbility to implement evaluation, validation, and guardrail mechanisms for AI-driven test execution.\nStrong JavaScript/TypeScript skills, with working knowledge of Python or Java.\nHands-on experience with UI and API test automation tools (e.g., Cypress, Playwright, REST Assured, Postman/Newman, Karate).\nExperience testing REST APIs and asynchronous, event-driven systems (message queues, pub/sub, or similar).\nExperience working with SQL or NoSQL databases for test data setup and validation.\nExperience integrating automated tests into CI/CD pipelines.\nFluent English.\nNice to have:\nExperience with MCP (Model Context Protocol) or other tool-integration standards for AI agents.\nExperience with performance testing tools such as k6 or Gatling.\nExperience with accessibility testing.\nExperience testing feature-flagged releases and gradual rollouts.\nExperience working with complex SaaS or consumer-facing products.\nSoft Skills:\nSenior-level autonomy: you make sound decisions with little oversight and drive solutions end to end.\nStrong analytical skills with a risk-based approach, and clear communication with developers and product.\nPragmatic about what to automate versus what to test exploratorily.\nDedication to continuous learning and development, for yourself and for others.","description_format":"text","description_chars":3254,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced 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