{"id":40523,"url":"https://alion.io/job/radiant-senior-sdet","title":"Senior SDET","company":{"id":8822,"name":"Radiant","domain":"radiant.com","url":"https://alion.io/company/radiant","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":92,"open_postings":16,"ghost_share":0,"stale_share":0.313,"repost_share":0,"time_to_fill_p50_days":56,"computed_at":"2026-10-17T05:46:00Z"}},"role":"QA","role_family":"QA","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":68000,"max_usd":127000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":17},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Go","optional":false},{"name":"gRPC","optional":false},{"name":"Helm","optional":false},{"name":"Kubernetes","optional":false},{"name":"Machine Learning","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"KServe","optional":true},{"name":"LLM","optional":true},{"name":"vLLM","optional":true}],"status":"live","first_seen_at":"2026-07-09T13:50:52Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-17T19:09:42Z","board_verified":true,"closed_at":null,"days_open":100,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":99},"description":"About the role\nWe’re looking for a Senior SDET with strong experience in Golang and Kubernetes to join our core product team. In this role, you'll design and build high-performance, cloud-native back-end systems and scalable APIs to support AI workloads, including LLMs and GPU-based services.\nYou’ll collaborate closely with cross-functional teams - including platform, backend, and machine learning engineers - to design, develop, and maintain scalable test automation frameworks and quality engineering solutions. You’ll help ensure the reliability, performance, and quality of systems that power model training, inference, and orchestration in production environments, while mentoring junior engineers, championing quality best practices, and driving initiatives to improve test coverage, release confidence, and overall software quality.\nWhat You’ll Do:\nDesign, develop and maintain robust automated test frameworks and quality engineering solutions in Go\n\nBuild and implement automated testing strategies across API, integration, end-to-end, performance, and reliability testing\n\nDevelop and maintain test automation for secure, reliable APIs (gRPC/REST) and backend systems\n\nCollaborate closely with UI/UX designers and front-end engineers to ensure quality is embedded throughout the product development lifecycle and identify potential usability, reliability, and performance risks and drive quality-focused improvements before implementation\n\nWork with PostgreSQL or similar relational databases to validate data integrity, performance, and reliability\n\nDesign and execute testing solutions for applications deployed on Kubernetes, leveraging Helm charts and the Kubernetes API\n\nCollaborate in architectural discussions, providing quality-focused input on system design, testability, scalability, and reliability\n\nMaintain high standards for software quality, observability, and maintainability through automation, reviews, and best practices\n\nWhat you bring:\nProven experience developing and maintaining test automation frameworks in Golang\n\nHands-on experience testing distributed systems and APIs (gRPC, REST) in production environments\n\nStrong experience with automated testing methodologies including unit, integration, end-to-end, regression, and performance testing\n\nProven ability to improve software quality through automation, code reviews, root cause analysis, and adherence to quality engineering principles\n\nDeep knowledge of Kubernetes and cloud-native architectures from a testing and reliability perspective\n\nHands-on experience with containers, Helm, CI/CD pipelines, and microservice testing strategies\n\nExperience working with test reporting, observability, and quality metrics to drive continuous improvement\n\nAbility to work autonomously with a proactive, solution-oriented mindset\n\nExperience collaborating effectively with developers, product teams, and cross-functional stakeholders\n\nGood understanding of front-end testing methodologies and tools, with experience validating complex user workflows across modern web applications\n\nPreferred Skills (Nice to Have)\nStrong understanding of modern DevOps workflows and CI/CD practices\n\nExperience building automated testing solutions for AI/ML platforms, LLM-serving infrastructure, or GPU workloads (e.g., vLLM, KServe)\n\nExperience with performance, load, resilience, and scalability testing of distributed systems\n\nExperience implementing quality gates and automated testing within CI/CD pipelines\n\nFamiliarity with cloud platforms and infrastructure testing\n\nQualities we look for:\nSet the standard: Every single day, you spot opportunities to constructively shake things up.\n\nInspire the change: There's no blueprint for the future. You’ll embrace challenges and change.\n\nYou’re real and you’re true to yourself: We cherish and celebrate diversity so you’ll feel right at home whoever you are and whoever you’re talking to, you treat everyone the same.\n\nWhy should you join us?\nWhat sets us apart is our blend of modern technology, competitive benefits, and an open, welcoming work culture that enables our people to thrive.\nHere are just some of the great things you can expect from us:\n25 days of annual leave\n\nA culture that emphasises results over hierarchy, process & ego: we place great emphasis on the quality, ingenuity and creativity of work.\n\nOpen communication, regular feedback: we value smooth collaboration, direct and actionable feedback, and believe that leading with empathy and a growth mindset makes us better together.\n\nLearning Time: we all have dedicated learning time to focus on new skills, projects or interests that lay outside of your day-to-day job.\n\nHealth & Wellbeing: we want everyone to feel healthy and happy, so we offer private medical insurance via Bupa.\n\nCycle to Work Scheme: we're committed to building a sustainable business, so we encourage cycling to work.\n\nGympass subscription to a variety of gyms and wellbeing apps\n\nParticipation in the company shares program\n\nEnhanced parental pay & leave\n\n Diversity, Equality, Inclusion and Belonging\nWe are an equal opportunity employer and we strive to reduce unconscious bias throughout our hiring process. All applicants will be considered for employment without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, veteran, neurodiversity status or disability status. To ensure our recruitment processes provide an equal opportunity for all applicants to succeed, we encourage you to let us know if there are any adjustments that we can make.","description_format":"text","description_chars":5576,"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":[]},"benefits":["Annual leave","Health insurance"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["MLOps","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-07-09T13:50:52Z"},{"event":"close","at":"2026-09-03T14:13:23Z"},{"event":"reopen","at":"2026-10-13T19:51:13Z"}],"visa":[],"liveness":{"score":20,"band":"cold","label":"Long shot","p_open":1,"p_active":0.553,"p_room":0.36,"age_days":99,"expected_fill_days":56,"reasons":["conf:3","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/radiant-senior-sdet","json_url":"https://alion.io/job/radiant-senior-sdet.json","meta":{"generated_at":"2026-10-17T20:17:24Z","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":3985,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":8822},"rest":"https://alion.io/mcp/rest/get_company?id=8822"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fradiant-senior-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%2Fradiant-senior-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%2Fradiant-senior-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/radiant-senior-sdet\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fradiant-senior-sdet"}]}