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Data Scientist

Data Scientist

Oliver Wyman - Senior Business Analyst - Warsaw

Oliver Wyman

Warsawfulltimesenior

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Role description

Oliver Wyman, a Marsh (NYSE: MRSH) business, is a management consulting firm driven by deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their most defining transformative moments.

About the Role:
As a Senior Business Analyst in Oliver Wyman's Internal Consulting Hub (ICH), you will own and be a subject matter expert for operations that sit within the ICH. As such, the role will support the wider business in processes and tools in its areas of expertise. In addition, the role will own workstreams supporting projects driven by the ICH. The operations and expertise can include (but are not limited to) designing and delivering firm-wide or broad surveys, analytics requiring advanced tools such as Tableau, and automation requiring tool expertise such as Microsoft Power Automate. As tools evolve, the role is expected to maintain knowledge of developments to grow the capability of the function and drive operational excellence.

Key Responsibilities:

  • Execute operations in the role’s area of expertise and literacy with supporting tools (e.g., survey execution, report building and analytics, and automation)
  • Provide analysis and deep insight supporting senior leadership decision-making, management of the business and operations, and continuous improvement
  • Own end-to-end delivery of workstreams for projects led by the ICH which have strategic importance for Oliver Wyman or involve complex system and process implementation
  • Serve as a subject matter expert to the firm in areas of expertise (e.g., survey execution, reporting building and analytics, and automation)
  • Collaborate with a diverse set of teams across Oliver Wyman functions, Marsh businesses, practices, and regions
  • Drive process standardization, documentation, improvement, and ensure operational compliance
  • Support ICH standard operational processes to cover for other team members and provide continuous service to the business

Experience Required:

  • An undergraduate or Bachelor’s degree in a relevant field of study and at least 3 years’ experience in a similar role [for Senior Business Analyst II, at least 5 years’ experience]
  • A recognised Business Analyst certification and/or training (e.g., BCS Business Analysis diploma, or ISEB, qualified), a plus
  • Advanced digital fluency to learn and use a range of digital tools
  • Advanced analytical capabilities, including proficiency in data gathering, quantitative and qualitative analysis, and reporting
  • Expertise with tools and software used to enable and support operational processes (e.g., Qualtrics, Power Automate, GenAI, etc.)
  • Expertise with relevant tools and software used for data analysis, statistical programming, and reporting within the firm (e.g., Excel and VBA, Python, Tableau Suite, etc.)
  • Proficient in Microsoft Office tools (e.g., Outlook, PowerPoint, Word)
  • Strong knowledge of business processes and project management fundamentals
  • Strong attention to detail
  • Growth mindset, adaptability and resilience
  • Ability to work independently balanced with proactivity to learn
  • Creative problem solving and out-of-the-box thinking
  • Ability to manage work to deadlines and service-level agreements
  • Service mindset and effective communication skills to collaborate and deliver to multiple functions, geographies, and businesses
  • Fluent business English with strong writing and verbal skills

What we can offer you:

  • Full time job contract with an attractive compensation package (including year-end financial bonus)
  • Selection of benefits (e.g. private health care, insurance, sport card, lunch card, gift card, saving plan, pension plan)
  • Opportunity for professional growth in a stable, global company
  • Access to mentoring and training programs
  • Inclusive culture with Employee Resources Groups and CSR activities
  • Working in diverse and dynamic teams, friendly and flexible workplace that promotes work-life balance
  • Fresh fruit, beverages and snacks while working in our modern office near the city center

Please send us your CV in
English
.

Why join us at Oliver Wyman?
At Oliver Wyman, we lead with heart - we love what we do and have fun while we do it! We also strive for breakthroughs by questioning, seeking diverse perspectives, and finding powerful and sustainable solutions. If you share these values and want to work as one and own our impact at the same time, be brave and achieve the amazing with us!

  • We’re individuals who are self-starting, motivated, energetic, entrepreneurial about what we do
  • We have the common aspiration to have an impact, leave a legacy and change the world. We have no interest in running a steady-state business. We want to build, grow and shape the environment around us
  • We value an environment where every member of Oliver Wyman is encouraged and expected to voice his or her opinion
  • We believe that to create a true meritocracy we need to remove artificial barriers to opportunity
  • We value people whose lives balance work and non-work activities because we believe they are both more interesting colleagues and are able to make better contributions to the Firm.
  • We push ourselves hard to deliver excellence, but we also work to extract the maximum benefit from the flexibility of a project-based business. We provide the ability to take career breaks for personal or family reasons. We fundamentally value each other’s time and are sensitive to how it is used. We are an output not input-based culture, have respect for people’s personal decisions, and believe that one's workload must be sustainable. We seek balance for ourselves and our colleagues.

Marsh and its Affiliates are EOE Minority/Female/Disability/Vet/Sexual Orientation/Gender Identity employers.

Oliver Wyman is a business of Marsh (NYSE: MRSH), 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 oliverwyman.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. Office-based teams will identify at least one “anchor day” per week on which their full team will be together in person.

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Data Scientist

Growth manager

Bending Spoons

Warsaw

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Role description

At Bending Spoons, we’re striving to build one of the all-time great companies. A company that serves a huge number of customers. A company where team members grow to their full potential. A company that functions at unparalleled levels of effectiveness and efficiency. A company that creates value for shareowners at an extraordinary rate. And a company that does so while adhering to high ethical standards.

In pursuit of this objective, we acquire and improve digital businesses, not to sell on, but to own and operate for the long term. The transformations we make are often deep—designed to speed up innovation, benefit customers, and strengthen business performance. Here, hierarchy is minimal and teams are small and talent-dense. We operate established products with the ambition, agility, and urgency of a startup. Across the company, we integrate AI deeply into how we work so that human judgment and machine intelligence reinforce each other.

For a talented, driven, and collaborative individual, working at Bending Spoons is an opportunity to learn, make an impact, and progress their career at an exceptionally high rate. That’s our promise to such a candidate.

A few examples of your responsibilities

  • Understand.
    Build deep knowledge of your product, its business model, and the key levers driving growth.
  • Analyze.
    Use AI, automation, and advanced analytics to explore high-performing campaigns, identify patterns in user and product data, and generate actionable insights.
  • Ideate.
    Turn insights, experiment results, competitor research, and AI-assisted exploration into hypotheses and identify opportunities to improve growth and monetization.
  • Test.
    Design and run rigorous experiments with real users, partnering closely with designers, engineers, and analysts to bring ideas to life and iterate quickly based on results.
  • Scale.
    Roll out winning ideas broadly, and use learnings from each experiment to shape the next cycle of discovery and testing.

What we look for

  • Reasoning ability.
    Given the necessary knowledge, you can solve complex problems. You think from first principles, and structure your ideas sharply. You resist the influence of biases. You identify and take care of the details that matter.
  • Drive.
    You’re extremely ambitious in everything you do—and your initiative, effort, and tenacity match the intensity of your ambition. You feel deeply responsible for your work. You hold yourself to a high—and rising—bar.
  • Team spirit.
    You give generously and without the expectation of receiving in return. You support the best idea, not your idea. You're always happy to get your hands dirty to help your team. You’re reliable, honest, and transparent.
  • Proficiency in English.
    You read, write, and speak proficiently in English.

What we offer

  • Incredibly talented, entrepreneurial teams.
    You’ll work in small, result-oriented, autonomous teams alongside some of the brightest people in your field.
  • An exceptional opportunity for growth.
    We go to great lengths to hire individuals of outstanding potential—then, our priority is to put them in the ideal position to thrive. Spooners in their 20s lead products worth hundreds of millions of dollars. And if you’ve got what it takes, you’ll soon be playing an essential role in major projects, too.
  • All. These. Benefits.
    Flexible hours, remote working, unlimited backing for learning and training, top-of-the-market health insurance, a rich relocation package, generous parental support, and a yearly retreat to a stunning location. We help each Spooner set up the conditions to do their best work.
  • Competitive pay and access to company equity at a discount.
    Typical annual salary offers range from £85,797 to £151,436 in London and from €66,065 to €107,837 elsewhere in Europe. The lower end of these ranges applies to candidates with little or no relevant experience, while exceptionally experienced candidates may receive offers of up to £316,052 in London or €240,330 elsewhere in Europe. Candidates offered a permanent contract may choose to receive part of their compensation in discounted company equity.

Commitment & contract
Permanent or fixed-term. Full-time or part-time.

Location
Milan (Italy), London (UK), Madrid (Spain), Warsaw (Poland), or fully remote from eligible countries.

The selection process
In our screening process, we prioritize verifiable signals of excellence, regardless of seniority. There are no preferential paths beyond what your application demonstrates, and we evaluate every candidate through the same process.

Some people hold back because they feel they lack experience or have an “imperfect” CV. If you like the role and believe you could excel over time, don’t self-reject.

All applications go through our careers page, which is the only way to be considered. If you pass our screening, you’ll be asked to complete one or more tests. They are challenging, may involve unfamiliar problems, and can take several hours. To learn more about what to expect throughout the selection process, you can find additional information here.

We set the bar high and won’t extend an offer until we’re confident we’ve found the right candidate. This is why a job may remain open for months or be reposted several times.

We consider all applicants for employment and provide reasonable accommodations for individuals with disabilities—please let us know through this form.

Before you apply
If you’ve applied before but didn't receive an offer, we recommend waiting at least one year before applying again.

Bending Spoons is a demanding environment. We’re extremely ambitious and we hold ourselves—and one another—to a high standard. While this tends to lead to extraordinary learning, achievement, and career growth, it also requires significant commitment.

To help you ramp up quickly and set yourself up for success, we expect you to spend most days in our Milan office during your first few months with us, regardless of your long-term work location. It’s the best way to rapidly absorb our company culture and build trust with your new teammates. We’ll support you with generous travel and accommodation assistance. After that, you’re welcome to work from one of our offices, or remotely from approved countries—depending on what we agree at the offer stage.

If the role speaks to you and you’re excited to give your best, we’d love to hear from you. Apply now—we can’t wait to meet you.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Data Scientist

Senior Insights Analyst (Growth Analytics Team)

Semrush

Warsaw

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Role description

Semrush is a brand visibility platform, empowering marketers to command their online presence and create measurable impact. We unify SEO authority and AI visibility, so brands are found, cited, and chosen everywhere search happens. That’s how Semrush gained the trust of over 28 million users—from scaling startups to Fortune 500 companies.

Here, you own the way you work, but we move as one unbeatable team.

We don’t just lead the market, we’re busy creating the world where Semrush is an unfair advantage for every marketer.

We move fast in ways to help you grow. Here, you have room to experiment, keep what works, and learn quickly from what doesn’t.

Ready to share our ambition and make an impact? Then, this role may be for you.

About The Role
We are looking for a Senior Insights Analyst to own the measurement of Semrush data products. You will define and improve how we measure usage, activation, and monetization, delivering measurable business impact through reliable, scalable analytics.

Key Responsibilities

  • Own the measurement of our data products end to end: usage and consumption analytics, activation and success metrics, and their connection to downstream revenue, upgrades, expansion, and retention.
  • Build the data foundations for the scope: analytical frameworks, metric definitions aligned to company SSoTs, and data quality in collaboration with engineering teams.
  • Turn usage analysis into monetization decisions: product limits, thresholds, pricing, and packaging recommendations.
  • Own user segmentation, including analytics and experimentation for the production LLM-based customization model: monitor quality, evaluate new use cases, and contribute to its roadmap.
  • Analyze and help optimize product-led growth funnels.
  • Design, run, and interpret experiments through the team's decentralized A/B infrastructure to measure the impact of product and pricing changes.
  • Translate insights into clear, actionable recommendations and present them to stakeholders up to the senior leadership level, ensuring clarity and strong business impact.
  • Work in an AI-native way: automate recurring analyses, leverage LLM tools to improve productivity, and share best practices within the team.

About You
Move together. Raise the bar. Learn fast—grow faster. That’s the default. And here’s what else is needed to succeed in this role:

  • 5+ years of experience in product analytics, data analysis, or similar analytical roles, with a demonstrated track record of driving business impact.
  • Advanced proficiency in SQL and strong experience working with large-scale relational datasets (BigQuery experience is a plus).
  • Proven experience analyzing complex datasets and solving ambiguous, high-impact business problems.
  • Strong foundation in statistics and quantitative analysis, with hands-on experience designing, running, and interpreting A/B tests or other experiments.
  • Experience building analytical frameworks (funnels, segmentation, monitoring) and measuring the impact of product or business changes.
  • Proven ability to partner with senior stakeholders and influence decisions through data.
  • Strong data visualization and storytelling skills (Tableau is a plus), with experience presenting insights to senior leaders and non-technical audiences.
  • Demonstrated ability to independently own analytical projects end-to-end and operate effectively in a fast-paced environment.
  • Hands-on experience with LLM tools in analytical workflows (prompting, prototyping, automation).
  • Experience contributing to analytics best practices and knowledge sharing within a team.
  • Bachelor's degree in Economics, Mathematics, Statistics, Computer Science, or a related field (Master's degree preferred).
  • Experience with usage-based pricing models or developer-facing products is a plus.

About The Perks

  • Unlimited PTO
  • Hobby & team building budget allowance
  • Employee Support Program
  • Loss of family member financial aid
  • Employee Resource Groups

A Little More About Us
Semrush is the leading brand visibility platform, empowering marketers to command their online presence and create measurable impact.

Built on the industry’s most expansive proprietary dataset, Semrush delivers AI-driven insights across GEO, SEO, Agentic Search Optimization, content marketing, paid media, and social strategy. The company was founded in 2008 and is headquartered in Boston, MA with a global presence across North America, Europe and Asia.

We’ve built something people are proud to be part of. And the awards agree: Great Place to Work, DEI Workplace, Diversity Champion Award, International Inclusion Award, Most Women Friendly Employers, Best Place for Working Parents. All thanks to 1700+ employees who build the company every day.

About Our Diversity, Equity, And Inclusion Commitments
Semrush is an equal opportunity employer. Building a better future for marketers around the world unites people from all backgrounds. Even if you feel that you don’t 100% match all requirements, don’t be discouraged to apply! We are committed to ensure that everyone feels a sense of belonging in the workplace.

We do not discriminate based upon race, religion, creed, color, national origin, sex, pregnancy, sexual orientation, gender identity, gender expression, age, ancestry, physical or mental disability, or medical condition including medical characteristics, genetic identity, marital status, military service, or any other classification protected by applicable local, state or federal laws.

Ready to be a part of this mission? Join us!

Apply for this job

Maryna Shamina

Talent Acquisition Specialist

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Data Scientist

Ekspert / Ekspertka w Dziale Efektywności Aktywów Upstream

ORLEN S.A.

Warsaw

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Role description

Twój zakres obowiązków

  • Tworzenie business case i scenariuszy dla aktywów i majątku w ramach Segmentu Upstream (utrzymanie, modernizacja, konsolidacja i sprzedaż aktywów, likwidacja)
  • Analiza porównawcza scenariuszy pod kątem efektywności ekonomicznej, operacyjnej, zgodności z regulacjami (przy wsparciu ekspertów) i realności wdrożenia
  • Opracowywanie rekomendacji działań (definicja problemu, proces analityczny, opcje strategiczne, uzasadnienie wyboru)
  • Prowadzenie projektów poprawy efektywności, restrukturyzacyjnych, konsolidacyjnych
  • Tworzenie przejrzystych prezentacji, raportów i innych informacji zarządczych
  • Koordynowanie procesu opracowania scenariuszy optymalizacji przy współpracy z zespołami technicznymi, finansowymi, prawnymi

Nasze wymagania

  • Wykształcenie wyższe (preferowane - finanse, ekonomia, zarządzanie i pokrewne)
  • Preferowane doświadczenie w wiodących firmach doradztwa biznesowego lub w obszarach strategii i transformacji w firmach przemysłowych
  • Silne umiejętności analityczne i strukturyzacji problemów (MECE, issue trees, 80/20, inne)
  • Doświadczenie w pracy z danymi finansowymi i informacjami technicznymi
  • Proaktywność, skuteczność w działaniu i odpowiedzialność biznesowa
  • Nastawienie na ciągły rozwój i umiejętność czerpania z różnych perspektyw

Mile widziane

  • Doświadczenie w projektach poprawy efektywności (performance improvement), optymalizacyjnych, budowy wartości (value creation) restrukturyzacyjnych, due dilligence lub M&A w branży Oil & Gas albo Mining
  • Znajomość specyfiki działalności Oil & Gas

To oferujemy

  • Stabilne zatrudnienie i atrakcyjne wynagrodzenie (w tym system premiowy)
  • Praca w nowoczesnym, międzynarodowym koncernie
  • Możliwość pracy z ekspertami z różnych dziedzin
  • Wyzwania zawodowe na światowym poziomie
  • Uczestnictwo w dużych, nowatorskich projektach
  • Dostęp do nowoczesnych narzędzi i metod pracy

Dodatkowo otrzymasz

  • Mobilność wewnątrz Grupy ORLEN i możliwości rozwoju w zagranicznych spółkach
  • Mentoring pracowniczy wspierający Twój rozwój zawodowy
  • Programy well-beingowe wspierające dobrostan
  • Program wspierający rodzinę
  • Dostęp do platformy kafeteryjnej

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Data Scientist

Delivery Manager - Data & AI Competency Center (f/m/x)

Sii Poland

Warsaw

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Role description

Our dynamically growing Data & AI Competence Center focuses on advanced data analytics, artificial intelligence, and modern data platforms. Our team consists of over 300 specialists delivering innovative Data and AI projects for clients across various industries.

Join us as a Delivery Manager – a key role responsible for managing complex project streams, ensuring high-quality delivered solutions, and actively supporting sales activities.

Your tasks

  • Execution and supervision of projects in the Data & AI area
  • Independent management of commercial projects and responsibility for their financial results
  • Leading and managing project teams, ensuring their efficiency and development
  • Building and maintaining long-term client relationships, ensuring high satisfaction
  • Collaboration with the sales team to develop business and identify new opportunities
  • Preparing technical and commercial offers and co-creating winning proposals for clients
  • Ensuring high quality of delivered services and managing project risks
  • Participation in initiatives developing Data & AI competencies (workshops, conferences, knowledge sharing)

Requirements

  • Minimum 3 years of experience as a Delivery Manager or Project Manager in IT
  • Ability to prepare offers and collaborate with sales teams
  • Experience in managing project teams, budgets, and delegating and enforcing tasks
  • Collaboration with external clients and building and maintaining business relationships
  • Very good organizational skills, proactivity, and decisiveness
  • Knowledge of project management tools (e.g., Jira, MS Office) and effective use of AI at work
  • Very good command of English – minimum B2 level
  • Residence in Poland and fluent knowledge of Polish

Nice to have

  • Experience in executing projects in Data, Big Data, Analytics, or AI/ML areas
  • Participation in implementations of modern data platforms such as Databricks, Snowflake, BigQuery, Microsoft Fabric
  • Involvement in implementing solutions based on GenAI
  • Experience working with enterprise clients or regulated industries

Job no. JOB-M3BHH

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

  • Great Place to Work
  • Solid financial situation
  • Contracts with the biggest brands
  • Centre of internal trainings
  • Many experts you can learn from
  • Open and accessible management team
  • Profit sharing
  • Passion Sponsorship program
  • Regular integration events and trips
  • Comfortable and well-equipped offices
  • MySii app
  • Medical care

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

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Oliver Wyman - Senior Business Analyst - WarsawOliver Wyman · Poland

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