Oferta pracy

Data Scientist


  • offer expired 4 months ago
  • contract of employment
  • full-time
  • specialist (Mid / Regular)
  • home office work, hybrid work
  • Immediate employment
  • remote recruitment


Aleje Jerozolimskie 98



Your responsibilities

  • Design, develop and test prototypes of advanced AI/ML algorithms to be used in various business applications (job matching, automated data corrections, data validation, text analytics, advanced data analysis)

  • Work with the DevOps and other Technology teams to implement and deploy the algorithms to ensure client/business needs are met and system performance is optimized

  • Monitor performance of the algorithms and suggest further ways of re-training and improving them

  • Identify opportunities for leveraging advanced analytics in transforming the business to the next level

  • Closely cooperate with the Business, Technology and Operations teams to ensure that machine learning models operate correctly

Our requirements

  • 1-2 years of professional experience in a previous data scientist position

  • Very good command of English

  • Excellent practical knowledge of Python, including version control, unit testing and documentation

  • Ability to wrangle datasets and perform exploratory data analysis

  • Machine learning: very good knowledge of scikit-learn and TensorFlow

  • NLP: SpaCy, NLTK or other NLP package (good knowledge of at least one)

  • Hands-on experience with NLP applications (e.g. question-answering, sentiment analysis, summarization), building custom RNNs, using pre-trained models (e.g. BERT)

  • Big Data: Spark

  • Cloud computing: general understanding of AWS platform and its services, hands-on experience with SageMaker

  • Databases: SQL, MongoDB (good knowledge of at least one)

  • VCS: Git (hands-on experience)


  • Machine learning: PyTorch

  • Web development – Flask / Django

  • Virtualization: Docker / Kubernetes

  • Data visualization in Python

  • Programming in R + Shiny

What we offer

  • Work in an international environment in the Strategic Projects team

  • Many development and on-the job learning opportunities

  • Flexible working hours, working from home due to pandemic and a hybrid model if the pandemic ends

  • Business casual dress code, integration and wellbeing events (for the time being executed fully online)

  • Attractive benefits package (including private health care, flex benefits package: prepaid restaurant or shopping card topped up every month, prepaid sports & culture card or a Multisport card; language course co-financing, unlimited access to online learning platform, retirement plan)

  • Multilingual community with inclusive atmosphere

  • Comfortable office in Warsaw city center (Al. Jerozolimskie 98, Pl. Zawiszy area)

  • The opportunity to gain valuable experience in an international organization and to have international exposure – working with teams across the globe

  • Benefits

  • sharing the costs of sports activities

  • private medical care

  • sharing the costs of foreign language classes

  • life insurance

  • remote work opportunities

  • flexible working time

  • pre-paid cards


Mercer believes in building brighter futures by redefining the world of work, reshaping retirement and investment outcomes, and unlocking real health and well-being. Mercer’s more than 25,000 employees are based in 44 countries and the firm operates in over 130 countries. Mercer is a business of Marsh McLennan (NYSE: MMC), the world’s leading professional services firm in the areas of risk, strategy and people, with 76,000 colleagues and annual revenue of $17 billion. Through its market-leading businesses including Marsh, Guy Carpenter and Oliver Wyman, Marsh & McLennan helps clients navigate an increasingly dynamic and complex environment. For more information, visit https://www.mercer.com/. Follow Mercer on Twitter @Mercer.

Marsh McLennan is committed to embracing a diverse, inclusive and flexible work environment. We aim to attract and retain the best people regardless of their sex/gender, marital or parental status, ethnic origin, nationality, age, background, disability, sexual orientation, and gender identity.

Scroll to the company’s profile