# Senior Data Scientist

**Company:** [Mindera](http://jobs.workable.com/companies/kAFiuZuCGfsouMaZWJDxvE.md)
**Location:** Bucharest, Romania
**Workplace:** hybrid
**Employment type:** Full-time
**Department:** Engineering

[Apply for this job](http://jobs.workable.com/view/4baeea43-803b-45f8-a7ab-bfbcd9381b08)

## Description

At Mindera, we believe that software is built by people, for people, with high-performance systems that impact users worldwide. We are looking for a **Senior** **Data Scientist** to join an agile, collaborative team where your voice matters as much as your code.

The **Data Scientist** translates complex marketing and product challenges into clear, data-driven decisions. You will build statistical models, measure real business impact, and help non-technical stakeholders make confident investment decisions with independence and high autonomy.

We value **empathy, self-organization, and a positive attitude**. If you are approachable, communicate clearly, and believe that team fit is just as important as technical prowess, you'll feel right at home here.

At Mindera we encourage the use of AI to assist with coding and related tasks. We find a persons skill in engineering and software craft, has a big impact long term successful delivery, with or without AI. Our goal in the interview process is to understand the candidates knowledge and skill with engineering.

If you need to, or plan to use AI, please be transparent with us when you're using it, to avoid issues and misunderstandings that can either: impact your chance of securing the role or impact your success at Mindera.

National and international expected traveling time varies according to project/client and organizational needs: 0%-15% estimated.

**How You'll Contribute**

-   **Problem Framing:** Partner directly with Marketing and Product leadership to turn vague business problems into clear metrics and actionable hypotheses.
-   **Statistical Modeling & Causal Analysis:** Build, interate, and monitor statistical models. Distinguish genuine causal impact from correlation to optimize marketing spend and product growth.
-   **Experimentation & Prototyping:** Design holdout tests and quasi-experiments (or A/B tests) where clean randomization isn't possible. Move rapidly from hypothesis to verified proof-of-concept.
-   **Data Storytelling:** Translate complex algorithmic behavior into simple, visual narratives for US/UK stakeholders.

## Requirements

**We're Looking for Someone Who:**

-   **Has at least 7 years** of relevant experience in data science.
-   **Has a Business-First Mindset:** You balance statistical rigor with the speed required for effective business decisions.
-   **Is an Effective Communicator:** You possess clear, fluent English communication skills and are entirely comfortable presenting technical work to non-technical business leaders.
-   **Brings Domain Context (Nice to have):** You have experience in Gaming, Entertainment, or Marketing, specifically dealing with LTV, Churn, Retention, and Segmentation.  
    

**Your Technical Toolkit:**

-   **Statistical Rigor:** Proven experience building statistical or ML models, with a deep understanding of causality vs. correlation in real-world data (e.g., Diff-in-Diff, propensity scores, uplift, or structural time series).
-   **Programming:** Advanced proficiency in either **Python** OR **R** for multi-dimensional data handling (both are not required).
-   **Data Carpentry:** Advanced **SQL** skills to independently query, clean, and architect complex datasets.
-   **Experimentation (Nice to have):** Familiarity with Geo-lift, holdouts, or formal A/B testing frameworks.
-   **Stack & Tools (Nice to have):** Experience working with **Databricks**, **Snowflake**, major Cloud providers (**AWS**, **GCP**, **Azure**), AI/ML toolkits, or Bayesian libraries.

## Benefits

**THE PERKS OF BECOMING A MINDER:**

-   Private medical subscription
-   Private medical subscription for children
-   Counseling and psychotherapy services
-   Reimbursement for eyeglasses
-   Self-proposal salary process
-   Annual profit distribution, subject to company performance and board decision
-   Mindera Unit Plan
-   Flexible benefits options (sports, medical, cultural, donations)
-   Trainings and learning opportunities to grow within your role
-   Coaching and development guidance
-   25 days holiday
-   Flexibility to choose where you work from
-   Vacation incentive
-   Parties, gatherings & trips

### WHY MINDERA?

We're thrilled to have the opportunity to share with you what it's like to be a part of the Mindera community.

We're a group of friendly and talented individuals who work together to bring projects to life, in a fun, politics-free environment.

Our culture is all about being adaptable and self-organized. We want Minders to take risks, make decisions, work together and feel free to be their most authentic selves, every single day.

We work closely with our clients to truly understand their products and develop high-performance, resilient, and scalable software systems that make a real impact for their users and businesses, worldwide.

We are proud of our work, we're always learning and growing in our Agile and collaborative environment, and we hope you'll love it here just as much as we do!

**Check out our Handbook & get to know us better:** [https://mindera.com/handbook.pdf](https://mindera.com/handbook.pdf)[](http://bit.ly/MinderaHandbook)

**Mindera around the world:** Porto, Portugal | Aveiro, Portugal | Coimbra, Portugal | Leicester, UK | San Diego, USA | San Francisco, USA | Chennai, India | Bengaluru, India | Blumenau, Brazil | Cluj-Napoca, Romania | Valencia, Spain | Casablanca, Morocco | Melbourne, Victoria, Australia & Remote[](https://apply.workable.com/minderacraft/j/EC62A9B206/apply/)