{"id":2137625,"url":"https://alion.io/job/marsh-full-stack-engineer-gen-ai-marshtech","title":"Full-Stack Engineer, Gen AI @MarshTech","company":{"id":3912411,"name":"Marsh","domain":"marsh.io","url":"https://alion.io/company/marsh-io","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Cluj-Napoca, Romania"],"countries":["RO"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Angular","optional":false},{"name":"LocalAI","optional":false},{"name":"Nest.JS","optional":false},{"name":"Node JS","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"React.js","optional":false},{"name":"Vue.js","optional":false},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"Python","optional":true},{"name":"RAG","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-08T00:00:00Z","employer_posted_date":"2026-10-08","last_verified_at":"2026-10-09T23:49:16Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Company:\nMercerDescription:\nWe are currently seeking a highly skilled and motivated Full-Stack Engineer, Gen AI to join our Innovation Team. In this role, you will play a vital part in designing, developing, and maintaining state-of-the-art web applications. You will work with a diverse group of talented professionals in a dynamic, start-up-like environment, helping to shape the future of digital solutions. This position will be based in Cluj-Napoca, Romania as a hybrid role that has a requirement of working three days a week in the office.\nMarsh has established its EMEA Technology Hub in Cluj, Romania, reflecting our commitment to innovation and excellence. This hub is central to our digital strategy, addressing emerging challenges and enhancing service delivery through advanced technology solutions that empower our clients and promote sustainable growth.\nWe will count on you to:\nContribute early to a rapidly evolving field with strong executive backing.\n\nExperience the excitement of a start-up culture while being backed by a global pioneer in the industry.\n\nEngage in thrilling initiatives like Hackathons and connect with the broader MMC Tech ecosystem.\n\nBe part of our strategic tech hub that delivers innovative digital solutions for clients and colleagues alike.\n\nEmbrace a fast-paced, experimental approach with a focus on rapid iteration and a willingness to pivot quickly adopt a proof-of-concept mindset to drive innovation and efficiency.\n\nBe able to learn from failures, adapt quickly, and effectively communicate the lessons learned.\n\nEngage effectively with our counterparts in the Dublin and Cluj AI teams.\n\nOperationalise prototypes developed by the Dublin or local AI teams.\n\nEnsure seamless handover of operationalised prototypes to business technology teams.\n\nThrive as a collaborative developer in an Agile environment.\n\nEmbrace a lifelong learning mindset, continuously seeking opportunities for improvement.\n\nEstablish and maintain best practice development frameworks and standards, such as Prompt Engineering.\n\nDevelop practices and guidelines to improve consistency and reuse of solutions.\n\nWhat you need to have:\nExcellent communication skills in both English and Romanian.\n\nBasic understanding of AI concepts and be able to talk about a personal or professional project involving AI, including your approach and the reasoning behind it.\n\n3+ years of relevant experience.\n\nProficiency in a modern frontend framework, ideally React (Vue or Angular are also great).\n\nHands-on experience with NestJS / NodeJS or a similar technology stack.\n\nExperience with or knowledge of Python.\n\nStrong comprehension of RESTful APIs.\n\nKnowledge of Large Language Models (LLMs).\n\nFamiliarity with prompt engineering techniques.\n\nUnderstanding of Retrieval-Augmented Generation (RAG).\n\nA creative, problem-solving mindset that drives your work.\n\nWhat makes you stand out?\nPractical experience with Kubernetes and MongoDB.\n\nKnowledge of deployments and infrastructure.\n\nWhy join our team:\nWork in an environment that empowers individuals to reach their full potential, fostering personal and professional growth\n\nWe help you be your best through professional development opportunities, interesting work, and supportive leaders;\n\nWe foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have an impact for colleagues, clients, and communities;\n\nOur scale enables us to provide a range of career opportunities, as well as benefits and rewards to enhance your well-being;\n\nA yearly budget and the opportunity to build your flexible benefits package (up to 20% of your annual salary);\n\n30+ days off (including legal days, birthday, public holiday replacements, and benefits options);\n\nPerformance bonus scheme;\n\nMatching charity contributions, charity days off, and the Pay it Forward charity challenge;\n\nCore benefits: Pension, Life and Medical Insurance, Meal Vouchers, Travel Insurance\n\nMarsh (NYSE: MRSH) is a global leader in risk, reinsurance and capital, people and investments, and management consulting, advising clients in 130 countries. With annual revenue of over $27 billion and more than 95,000 colleagues, Marsh helps build the confidence to thrive through the power of perspective. For more information, visit marsh.com, or follow us on LinkedIn and X.Marsh is committed to creating a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age, background, disability, ethnic origin, family duties, gender orientation or expression, marital status, nationality, parental status, personal or social status, political affiliation, race, religion and beliefs, sex/gender, sexual orientation or expression, skin color, or any other characteristic protected by applicable law.Marsh is committed to hybrid work, which includes the flexibility of working remotely and the collaboration, connections and professional development benefits of working together in the office. All Marsh colleagues are expected to be in their local office or working onsite with clients at least three days per week. 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