{"id":961225,"url":"https://alion.io/job/dentsu-senior-ai-systems-engineer-multi-agent-systems","title":"Senior AI Systems Engineer - Multi-Agent Systems","company":{"id":888,"name":"dentsu","domain":"dentsu.com","url":"https://alion.io/company/dentsu-polska","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":139,"ghost_share":0.014,"stale_share":0.755,"repost_share":0.043,"time_to_fill_p50_days":29,"computed_at":"2026-11-02T06:13:15Z"}},"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":["Lisbon, Portugal","Belgrade, Serbia"],"countries":["PT","RS"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":37000,"max_usd":82000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":15},"experience_years_min":null,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Amazon EC2","optional":false},{"name":"AutoGen","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"Claude","optional":false},{"name":"CrewAI","optional":false},{"name":"Cursor","optional":false},{"name":"LangChain","optional":false},{"name":"LangGraph","optional":false},{"name":"LangSmith","optional":false},{"name":"Multi-Agent Systems","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"Agile","optional":true},{"name":"JavaScript","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-09-16T10:19:37Z","employer_posted_date":"2026-09-16","last_verified_at":"2026-11-03T04:08:08Z","board_verified":true,"closed_at":null,"days_open":47,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":47},"description":"Job Description:\nCompany Description:\nWe Dream. We Do. We Deliver.\nAt Merkle, a dentsu company, we power the experience economy. Whetherwe’rebuilding the next greatapp, running CRM at scale for global brands, delivering technology architectures that support millions ofusers, or providing world-class data, identity, and insights solutions,it’sall in the name of craftingexperiences that set brands apart from the competition. Backed bydentsu'slegacy of innovation andcreativity originating in Japan,we’vespent over 35 years helping brands build loyalty, drive growth, andconnect meaningfully with their audiences.\nWe’vebeen named a global “Leader” by top industry analyst firms in categories as wide-ranging as digitaltransformation and commerce, experience design,engineeringand technology integration, digitalmarketing, data science,CRM andloyalty, and customer data management.\nWhy choose Merkle?\nInnovation at Our Core: As part ofdentsu’sglobal network, Merkle pushes the boundaries of customerexperience, integrating creativity, technology, and data to drive real-world impact. For over 35 years,we’vebeen innovating to meet the changing needs of our clients.\nGlobal Reach with Local Expertise: With over16,000 employeesacross 30+ countries, and part of a70,000employees’network at dentsu, Merkle blends global insights with a deep understanding of localmarkets to deliver personalized, effective solutions.\nCollaborative Culture: At Merkle, your ideas and contributions truly matter.You’lljoin a team that fostersinnovation, collaboration, and creative problem-solving. Together, we work on impactful internationalprojects, making meaningful connections every step of the way.\nRole Description:\nAbout the Role\nWe're looking for a full-stack engineer to build and deploy multi-agent AI systems at enterprise scale. You'll design autonomous agent networks that solve real operational challenges, working across cloud infrastructure, backend services, and AI frameworks-using Claude and modern AI tools to accelerate development.\nWhat You'll Do\nBuild Multi-Agent Systems: Design and implement agent architectures using LangChain and LangSmith to orchestrate specialized agents for complex workflows.\n Full-Stack Development: Build production backends in Node.js and craft frontends for human-agent interaction; leverage AI (Claude, Cursor) to ship faster.\n AWS Infrastructure: Deploy and scale agent services on AWS (EC2, Lambda, managed services) with hands-on deployment experience.\nObservability & Reliability: Monitor agent behavior, token efficiency, and latency using LangSmith; implement fallback logic and state management for high task completion.\nClient Collaboration: Work with clients to define agent use cases, refine architectures, and iterate on deployed systems.\nWhat We're Looking For\n Node.js & Full-Stack: Strong backend development in Node.js/TypeScript; comfortable building or working with frontends (React/Next.js).\nAWS Fluency: Practical, hands-on experience deploying and managing production workloads on AWS.\nAI-Powered Development: Daily user of Claude, Cursor, or similar AI coding tools; comfortable building with LangChain and LangSmith.\n Agent Architecture: Experience building or working with multi-agent systems (LangGraph, AutoGen, CrewAI, or custom implementations).\nShipping Mentality: Ability to move quickly from concept to production; strong communication with technical and non-technical stakeholders.\nNice to Have\nExperience with agent evaluation, self-correction loops, or memory architectures.\nBackground in consulting or product studios shipping AI-driven features.\nPython capability for specialized AI services.\n*Work visa sponsorship is not available. For local documentation (NIF, NISS), please consult Portuguese authorities.\nAdditional Information:\nBenefits andperks:\n25 vacation days\nEnjoy 2additionalvolunteering days to support your passion project\nMental Health: Benefit from 3 extra wellness days on top of your vacation days and a Mental HealthFirst Aider and EmployeeAssisstanceprogram to support your well-being\nHealth insurance (also possible for family members)\nCutting Edge Technology & Latest IT tools\nSoftware-house environment\nAgile and Flexible working hours\nHybridworking:we combine flexibility with in-person collaboration, with an expectation of 1 day per week/ 4 days per month in the office\nDigital nomad policy\nFocus on career development\nFull access to Dentsu Academy, our global online learning platform\nBeers, foosball, and ping-pong! #workhardplayhard\nFree breakfast every secondWednesdayof the month\nEmployee discounts\nTeam & Company events\nReferral bonus program\n*At dentsu, Diversity, Equity, and Inclusion (DEI) is central to our vision: \"To be at the forefront of people-centered transformations that shape society.\"\nWe cherish the unique talents and perspectives of all individuals, welcoming applicants regardless of gender, gender identity, nationality, religion, ethnicity, cultural background, sexual orientation, age, physical or mental ability. By embracing diverse perspectives, we create meaningful change and sustainable growth for our people, clients, and society. Our hiring decisions are guided by qualifications and role-specific requirements, ensuring a workplacefreefrom discrimination and harassment.\n#LI-Hybrid #LI-MERKLE\nLocation:\nLisbonBrand:\nMerkleTime Type:\nFull timeContract Type:\nPermanent","description_format":"text","description_chars":5396,"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":["Company events","Equity","Flexible schedule","Health insurance"],"hiring_locations":[{"name":"Portugal","iso":"PT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Commerce"],"lifecycle":[{"event":"open","at":"2026-09-16T10:19:37Z"}],"visa":[],"liveness":{"score":20,"band":"cold","label":"Long shot","p_open":1,"p_active":0.558,"p_room":0.36,"age_days":46,"expected_fill_days":29,"reasons":["conf:1","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/dentsu-senior-ai-systems-engineer-multi-agent-systems","json_url":"https://alion.io/job/dentsu-senior-ai-systems-engineer-multi-agent-systems.json","meta":{"generated_at":"2026-11-03T04:38:09Z","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":6283,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-04T00:00:00Z"}},"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":888},"rest":"https://alion.io/mcp/rest/get_company?id=888"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fdentsu-senior-ai-systems-engineer-multi-agent-systems"},{"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%2Fdentsu-senior-ai-systems-engineer-multi-agent-systems"},{"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%2Fdentsu-senior-ai-systems-engineer-multi-agent-systems"},{"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/dentsu-senior-ai-systems-engineer-multi-agent-systems\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fdentsu-senior-ai-systems-engineer-multi-agent-systems"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":961225}},{"tool":"search_jobs","arguments":{"company":"dentsu.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":961225},"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. Docs: https://alion.io/developers"}}