{"id":553568,"url":"https://alion.io/job/prolific-senior-product-engineer-ii","title":"Senior Product Engineer II","company":{"id":30,"name":"Prolific","domain":"prolific.com","url":"https://alion.io/company/prolific","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":73,"open_postings":27,"ghost_share":0.37,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":64,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom","United Kingdom"],"countries":["GB"],"hiring_countries":["GB"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":86000,"max_usd":175000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":29},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon EventBridge","optional":false},{"name":"AWS","optional":false},{"name":"Celery","optional":false},{"name":"CircleCI","optional":false},{"name":"Datadog","optional":false},{"name":"Django REST Framework","optional":false},{"name":"DynamoDB","optional":false},{"name":"GCP","optional":false},{"name":"GitHub Actions","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"Python","optional":false},{"name":"TypeScript","optional":false},{"name":"Vue.js","optional":false},{"name":"Django","optional":true}],"status":"live","first_seen_at":"2026-09-08T14:47:56Z","employer_posted_date":"2026-09-08","last_verified_at":"2026-10-31T11:12:48Z","board_verified":true,"closed_at":null,"days_open":52,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":52},"description":"Senior Product Engineer II\nTeam: Engineering \n Prolific\nProlific is not just another player in the AI space - we are the architects of the human data infrastructure that's reshaping the landscape of AI development. In a world where foundational AI technologies are increasingly commoditized, it's the quality and diversity of human-generated data that truly differentiates products and models.\nThe role\nAs a Senior Product Engineer II you will be the senior technical contributor for your team, partnering with the Engineering Manager to set technical direction and ensure delivery excellence. You will balance hands-on contribution with technical leadership, serving as the go-to person for technical decisions and architecture within your team's domain. You are increasingly outward-facing, representing your team's technical work beyond its boundaries.\nWhat you’ll be doing in the role\nDefine Technical Direction: Partner with the EM to shape the team’s technical roadmap, strategy, and architectural direction.\nDrive Engineering Excellence: Own code quality, testing, reliability, performance, and engineering standards across the team.\nLead Technical Discovery: Guide technical planning, discovery, solution design, and decision-making, balancing short- and long-term needs.\nCollaborate and Influence: Facilitate cross-team technical collaboration, contribute to engineering-wide initiatives, and act as a technical liaison.\nGrow the Team: Actively mentor and develop engineers at any level, within and beyond the team.\n What you'll bring to this role\nTechnical Leadership: Proven experience leading technical direction, making architectural decisions, and solving complex engineering problems.\nEngineering Expertise: Deep expertise in software engineering, architecture, testing, reliability, performance, and maintainable system design.\nProduct Mindset: Ability to connect technical decisions to customer and business outcomes while balancing delivery with long-term technical health.\nInfluence and Communication: Strong communication skills with the ability to build consensus, influence across teams, and explain technical concepts to non-technical stakeholders.\nMentoring and Collaboration: A strong track record of developing engineers, working effectively with EMs and wider engineering communities, and contributing to a culture of learning and excellence.\nKey Technologies.\nWe ask for expertise in some, and the willingness to learn where required\nCloud Platforms: AWS and GCP\nProgramming Languages: Python, JavaScript, and TypeScript\nFrameworks: Vue.js, Django Rest Framework, Container-based and Serverless architectures\nDatabases: MongoDB and DynamoDB\nDevOps and Monitoring: CircleCI, GitHub Actions, Kubernetes, Celery, EventBridge and DataDog\nWhy Prolific is a great place to work\nWe've built a unique platform that connects researchers and companies with a global pool of participants, enabling the collection of high-quality, ethically sourced human behavioral data and feedback. This data is the cornerstone of developing more accurate, nuanced, and aligned AI systems.\nWe believe that the next leap in AI capabilities won't come solely from scaling existing models, but from integrating diverse human perspectives and behaviors into AI development. By providing this crucial human data infrastructure, Prolific is positioning itself at the forefront of the next wave of AI innovation - one that reflects the breath and the best of humanity.\nWorking for us will place you at the forefront of AI innovation, providing access to our unique human data platform and opportunities for groundbreaking research. Join us to enjoy a competitive salary, benefits, and remote working within our impactful, mission-driven culture.\nLinks to more information on Prolific\nBenefits \nExternal Handbook \nWebsite \nYoutube \nPrivacy Statement\nBy submitting your application, you agree that Prolific may collect your personal data for recruiting and global organisation planning. Prolific's Candidate Privacy Notice explains what personal information Prolific may process, where Prolific may process your personal information, its purposes for processing your personal information, and the rights you can exercise over Prolific use of your personal information.","description_format":"text","description_chars":4261,"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":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","LLM & Generative AI","Market Research","AI Research Labs"],"lifecycle":[{"event":"open","at":"2026-09-08T18:28:07Z"}],"visa":[],"liveness":{"score":68,"band":"ok","label":"Likely open","p_open":1,"p_active":0.903,"p_room":0.75,"age_days":52,"expected_fill_days":64,"reasons":["conf:2","velocity","win:late"],"computed_at":"2026-10-31T05:58:55Z"},"pay":null,"html_url":"https://alion.io/job/prolific-senior-product-engineer-ii","json_url":"https://alion.io/job/prolific-senior-product-engineer-ii.json","meta":{"generated_at":"2026-10-31T11:56:53Z","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":18433,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-01T00:00:00Z"}},"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":30},"rest":"https://alion.io/mcp/rest/get_company?id=30"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fprolific-senior-product-engineer-ii"},{"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%2Fprolific-senior-product-engineer-ii"},{"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%2Fprolific-senior-product-engineer-ii"},{"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/prolific-senior-product-engineer-ii\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fprolific-senior-product-engineer-ii"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":553568}},{"tool":"search_jobs","arguments":{"company":"prolific.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":553568},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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