{"id":1685726,"url":"https://alion.io/job/dow-jones-senior-machine-learning-engineer-search","title":"Senior Machine Learning Engineer, Search","company":{"id":58531,"name":"Dow Jones","domain":"dowjones.com","url":"https://alion.io/company/dow-jones","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":75,"open_postings":21,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":26,"computed_at":"2026-10-14T06:34:16Z"}},"role":"AI/ML","role_family":"AI/ML","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":["Barcelona, Spain"],"countries":["ES"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":57000,"max_usd":121000,"period":"year","method":"role_seniority_country_cell","sample_n":8},"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"A/B Testing","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Embeddings","optional":false},{"name":"GCP","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Recommender Systems","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-09-15T00:00:00Z","employer_posted_date":"2026-09-15","last_verified_at":"2026-10-14T11:12:44Z","board_verified":true,"closed_at":null,"days_open":29,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":29},"description":"Job Description:\nAbout the Team:\nOur Technology team drives the evolution of our Engineering, Data, Product and User Experience functions. With a keen focus on delivering cutting-edge solutions, we shape the digital landscape for our customers, readers and users. From revolutionizing visuals to optimizing tools and harnessing the power of data, mobile, video and social platforms, our team is committed to providing a seamless and immersive experience across all touchpoints. Collaborating closely with our newsrooms and strategic partners, we spearhead the development of groundbreaking products and technologies.\nAbout the Role:\nWe are looking for a Senior Machine Learning Engineer to join our Search team in Barcelona. You will design and build systems that deliver highly relevant, personalized experiences across our digital products. This role sits at the intersection of backend engineering, data, and applied AI-leveraging modern architectures and machine learning techniques to connect users with the most relevant content.\nYou will play a key role in building scalable search indexing, retrieval and ranking systems that serve content to millions of readers in real time. You will partner closely with product, data science, and engineering teams, bringing technical depth and sound judgment to architectural decisions, model design, and evaluation methodology.\nYou Will:\nDesign, build, and operate search systems and services powering content discovery and user engagement.\n\nDevelop and improve ML models across the whole personalization stack, from candidate generation to final ranking.\n\nUse data-driven methods to improve candidate retrieval, leveraging embeddings, two-tower architectures, and user/content signals.\n\nDrive experimentation and A/B testing to measure impact and iterate on models and features.\n\nLeverage LLMs to enhance content understanding and feature extraction.\n\nOptimize systems for performance, latency, and scalability across high-traffic environments.\n\nContribute to engineering best practices, including testing, observability, and CI/CD.\n\nCollaborate with product managers, data scientists, and analysts to translate business needs into scalable technical solutions.\n\nYou Have:\n2-4 years of industry experience applying machine learning methods, with a strong focus on recommender systems, search, ranking, or personalization.\n\nStrong proficiency in Python for production ML systems.\n\nExperience with A/B testing and experimentation frameworks to measure model impact.\n\nFamiliarity with cloud platforms (AWS, GCP, or Azure) and containerized environments.\n\nFamiliarity with SQL and NoSQL databases.\n\nDegree in computer science, machine learning, statistics, or equivalent work experience.\n\nOur Benefits\nComprehensive Healthcare Plans for you and your family (paid by Dow Jones)\n\nExtra paid Time Off (30 days of holidays/year)\n\nPossibility to work remotely for 3 months/year (desplazamiento program) and one week of remote work per quarter\n\nMeal benefit with Pluxee (171€/month on top of your salary)\n\nRetirement Plans (Dow Jones will pay 2% of a members Pensionable Salary and match employee contribution up to a maximum of 3 %).\n\nLive insurance\n\nWell-being Resources (185€ allowance per quarter, Classpass, Spring Health, etc.)\n\nFamily Care Benefits & Caregiving Support\n\nHone and Linkedin learning courses for your further development\n\nEmployee Referral Program\n\nLearn more about us and our benefits clickhere.\nThis is a hybrid position, based in Barcelona\nEqual Opportunity Employer\nAll qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, protected veteran status, disability status or any other protected characteristic. We strongly encourage applications from all qualified individuals, including women, people with disabilities, and those from underrepresented groups.\nReasonable Accommodation\nWe are committed to providing reasonable accommodation for qualified individuals with disabilities in our job application and/or interview process. If you need assistance or accommodation in completing your application or participating in an interview due to a disability, email us at . Please put \"Reasonable Accommodation\" in the subject line and provide a brief description of the type of assistance you need. This inbox will not be monitored for application status updates.\nPlease refer to the privacy notice at the bottom of this page for submitting any data access, deletion, or other data subject rights requests, where permitted under your local laws and regulations.\nBusiness Area:\nDow Jones - Technology\nJob Category:\nSoftware Product Engineering\nUnion Status:\nNon-Union roleBase Pay Range: 55,000 € - 70,000 €\nWe’re committed to offering competitive and flexible compensation to attract top talent. This pay range reflects our good faith estimate for the role and may vary based on a candidate’s experience, skills, location, and other relevant factors.\nFor bonus-eligible roles, targets are determined based on multiple considerations, including market benchmarks and individual contributions.\nFor benefits-eligible roles, we offer a comprehensive and competitive benefits package covering health, retirement, wellbeing, and more, along with optional benefits to meet the diverse needs of our employees.","description_format":"text","description_chars":5368,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Retirement plans"],"hiring_locations":[{"name":"Spain","iso":"ES","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Data & Analytics","Publishing","Digital Media"],"lifecycle":[{"event":"open","at":"2026-10-02T10:22:08Z"}],"visa":[],"liveness":{"score":32,"band":"fade","label":"Fading","p_open":1,"p_active":0.576,"p_room":0.55,"age_days":29,"expected_fill_days":26,"reasons":["conf:0","stale_co","velocity","win:tail","comp:brand"],"computed_at":"2026-10-14T06:34:16Z"},"pay":null,"html_url":"https://alion.io/job/dow-jones-senior-machine-learning-engineer-search","json_url":"https://alion.io/job/dow-jones-senior-machine-learning-engineer-search.json","meta":{"generated_at":"2026-10-14T13:38:07Z","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":16787,"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":58531},"rest":"https://alion.io/mcp/rest/get_company?id=58531"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fdow-jones-senior-machine-learning-engineer-search"},{"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%2Fdow-jones-senior-machine-learning-engineer-search"},{"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%2Fdow-jones-senior-machine-learning-engineer-search"},{"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/dow-jones-senior-machine-learning-engineer-search\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fdow-jones-senior-machine-learning-engineer-search"}]}