{"id":2467405,"url":"https://alion.io/job/zefr-software-development-engineer-in-test-sdet","title":"Software Development Engineer in Test (SDET)","company":{"id":689429,"name":"Zefr","domain":"zefr.com","url":"https://alion.io/company/zefr","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"QA","role_family":"QA","seniority":"junior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Marina del Rey, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":90000,"max":120000,"currency":"USD","period":"year","gross":null,"usd_annual":120000},"salary_estimate":null,"experience_years_min":1,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Cypress","optional":false},{"name":"Git","optional":false},{"name":"Go","optional":false},{"name":"GraphQL","optional":false},{"name":"Java","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Multimodal AI","optional":false},{"name":"Playwright","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"Selenium","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"BigQuery","optional":true},{"name":"Datadog","optional":true},{"name":"dbt","optional":true},{"name":"GCP","optional":true},{"name":"Google BigQuery","optional":true},{"name":"Grafana","optional":true},{"name":"Great Expectations","optional":true},{"name":"JavaScript","optional":true},{"name":"JMeter","optional":true},{"name":"k6","optional":true},{"name":"LLM","optional":true},{"name":"Locust","optional":true},{"name":"PagerDuty","optional":true},{"name":"React.js","optional":true},{"name":"Snowflake","optional":true}],"status":"live","first_seen_at":"2026-10-13T17:50:15Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-14T02:42:38Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"What we do:\nZefr is the leader in AI-powered content classifications for brands and advertisers. Zefr’s platform is purpose built for multi-modal content understanding on open platforms like YouTube, TikTok, Meta and Snap, with pre-bid activation and verification solutions. Our products safeguard media and AI investments, while maximizing performance and efficacy on those channels.\nHeadquartered in Los Angeles with global offices across New York, Chicago, London, Toronto, Singapore, and more, Zefr is redefining what trust and transparency means for social media in the age of AI.\nWhat you'll do:\nWe're hiring a Software Development Engineer in Test (SDET) with 1-3 years of experience to help own quality across our APIs, web apps, data pipelines and AI-powered services, mainly by writing code rather than running manual test scripts.\nYou'll work inside product engineering teams. You'll decide what to test and how, build and maintain automated tests in a shared framework, and make sure those tests gate every release. You'll also watch production through monitors and alerts.\nThis role suits an engineer who treats testing as a software problem and enjoys finding where systems break. That includes data and model outputs, not only screens and endpoints.\nPlan testing for each feature. Join grooming, ask clarifying questions, and write test plans that cover happy paths, edge cases and negative cases.\n\nBuild and maintain test automation for REST and GraphQL APIs, backend services, web UIs and third-party partner APIs, in a shared code-based framework. Review teammates' test code.\n\nValidate data pipelines and data quality. Write checks on pipeline outputs (schemas, row counts, freshness, business rules) and help define data SLAs.\n\nTest AI and ML features. Compare model or prompt versions on fixed datasets, validate shadow deployments before rollout, and test AI agents and their tools (such as MCP servers) for correct behavior, input validation and error handling.\n\nKeep tests running in CI/CD. Wire suites into pipelines so they gate merges and deploys. Keep them fast and reliable by triaging failures, fixing flaky tests and cutting run time.\n\nValidate releases in preview, staging and production: prepare test data, run regression, sign off, and verify after deploy.\n\nMonitor production quality. Build synthetic checks, dashboards and alerts that catch regressions and bad data before customers do.\n\nInvestigate issues and incidents. Reproduce problems, find root causes, write clear bug reports and verify fixes. Help out during high-severity incidents.\n\nWork across roles with engineers, product managers, data scientists and customer-facing teams. Turn findings into well-scoped tickets and share quality status openly.\n\nWhat you bring:\n1-3 years of experience, ideally as a QA engineer or SDET, with hands-on test automation.\n\nSolid coding skills in at least one language used for test automation. Python is preferred; Java, TypeScript or Go also work.\n\nExperience automating API tests: request and response validation, schema checks and negative cases.\n\nExperience with a modern UI end-to-end framework such as Playwright, Cypress or Selenium.\n\nWorking SQL. You can query across tables to confirm data is complete and correct.\n\nGood test design instincts: edge cases, boundary values, negative cases and the test pyramid.\n\nComfort with Git, pull requests, code review and running tests in CI/CD pipelines.\n\nPersistence when debugging: reading logs, inspecting network calls and querying databases.\n\nClear written communication: bug reports, test plans and short async status updates.\n\nNice to have:\nNone of these are required. If you have some of them, tell us.\nExposure to a public cloud (GCP, AWS or Azure) and containers.\n\nTesting data pipelines and orchestration tools (Airflow, dbt, Great Expectations, Elementary) or data warehouses (Snowflake, BigQuery).\n\nTesting ML models or LLM-powered features, including evaluation datasets and handling non-deterministic outputs.\n\nTesting AI agents or MCP servers, or using AI coding assistants to speed up test writing and exploratory testing.\n\nObservability and alerting tools (for example Datadog, Grafana, Cloud Monitoring, PagerDuty) and synthetic monitoring.\n\nPerformance and load testing (k6, Locust, JMeter).\n\nExperience with ad tech, digital media or large third-party platform APIs (Google Ads, Meta, TikTok, Snap).\n\nFrontend knowledge (React) to test framework upgrades and migrations.\n\nSecurity basics for test environments, such as managing secrets for test accounts.\n\nBenefits (for US based employees):\nFlexible PTO\n\nMedical, dental, and vision insurance with FSA options\n\nCompany-paid life insurance\n\nPaid parental leave\n\n401(k) with company match\n\nProfessional development opportunities\n\n13 paid holidays off\n\nSummer Fridays (we leave early)\n\nIn-office, hybrid, and fully-remote work options available\n\nIn-office lunches and lots of free food\n\nOptional in-person and virtual events (we like to celebrate!)\n\nCompensation (for US based employees):\nThe anticipated salary for this position is between $90,000 and $120,000. Within the range, individual pay is determined by factors such as job-related skills, experience, and relevant education or training.\nZefr is an equal opportunity employer that embraces diversity and inclusion in the workplace. We are committed to building a team that represents a variety of backgrounds, skills, and perspectives because we know this only makes us better. We strongly encourage women, persons of color, LGBTQIA+ individuals, persons with disabilities, members of ethnic minorities, foreign-born residents, and veterans to apply even if you do not meet 100% of the qualifications.","description_format":"text","description_chars":5708,"description_truncated":false,"requirements":{"experience_years_min":1,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Life insurance","Parental leave","Professional development","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Machine Learning","Advertising"],"lifecycle":[{"event":"open","at":"2026-10-13T19:01:09Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 5 · green card filings: 6","filings_12m":5,"filings_prev_12m":4,"green_card_filings_12m":6,"median_offered_wage_usd":168864,"route":null,"cap_exempt":false,"checked_at":"2026-10-03T21:08:04+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":27,"reasons":["conf:0","win:early","comp:junior"],"computed_at":"2026-10-14T03:26:21Z"},"pay":{"stated_usd_annual":120000,"is_top_pay":true},"html_url":"https://alion.io/job/zefr-software-development-engineer-in-test-sdet","json_url":"https://alion.io/job/zefr-software-development-engineer-in-test-sdet.json","meta":{"generated_at":"2026-10-14T03:26:21Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":5383,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":689429},"rest":"https://alion.io/mcp/rest/get_company?id=689429"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fzefr-software-development-engineer-in-test-sdet"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fzefr-software-development-engineer-in-test-sdet"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fzefr-software-development-engineer-in-test-sdet"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/zefr-software-development-engineer-in-test-sdet\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fzefr-software-development-engineer-in-test-sdet"}]}