Senior Data Scientist

Company shown to members 🔒 · Remote · Poland, Ukraine only

Poland, Ukraine onlySeniorPublished 17 June 2026Check carefully

Apply free: 3 jobs are on us✨ Tailor my resume for this job🎤 Practise the interview question, free

✓ Straight from the company's own careers page. No middlemen, no “we'll send you a check for equipment”. How we check jobs

✓ Sent 100 applications and heard nothing? Make this one count: tailor your resume to this ad in one tap, free.

✨ Not sure this is the one? Get your remote job matches in 30 seconds →

First recorded by Psst: 12 October 2026. Your first 3 jobs are free to apply to (the first right away, 2 more with your email). After that, the company and the apply link are for Psst members, from $4.99 for 7 days.

Free interview practice

Practise the first interview question for this job

If the company replies, the first call usually starts with a question like this. Vague answers are the easiest to reject. Write yours and get an AI score in under a minute.

The 20-second read

Experience
Senior
Where you can live
Poland, Ukraine only
Skills and tools
sql, python, machine learning
Degree or licence
Mentioned (degree in)
Job type
Full-time

Read from the ad by Psst's rules. Check the full ad below before applying.

Job details

Where you can work
Poland, Ukraine
Employment type
Full-time
Advertised pay
Not stated by the employer
Experience
Senior
Employer publication date
17 June 2026
First recorded by Psst
12 October 2026
Last checked at the source
8 November 2026

About the job

If you’re a talented Data Scientist looking to be part of a fast-growing, innovative R&D team, shape the future of decision-making in business, work on cuttingedge technologies and vast amounts of global real-time data, affect billions of mobile users, and become an industry leader - then let’s talk! Start.io is a mobile data platform that enables organizations to uncover insights and make datadriven decisions that enhance strategies and drive growth. We are seeking a Senior Data Scientist to join our Data Science & Engineering team.

Responsibilities

  • Analyze large and complex data to discover hidden patterns and opportunities;
  • Develop and own end-to-end highly scalable data pipelines;
  • Develop state-of-the-art machine learning models, and algorithms and build solutions in monetization fields;
  • Provisioning data models for real-time (online) processing;
  • Shape new data products, and constantly improve the existing products;
  • Collaborate with multiple teams including Product, BI, Analysts, DevOps, R&D and Marketing to lead and accomplish overall solutions;
  • Oversee a complete release to production, including analyzing requirements, testing, monitoring and measuring results, multitasking, and quickly responding to critical issues.

Requirements

  • B.Sc./M.A/M.Sc. degree in Computer Science, Engineering, Math, Statistics, or other equivalent fields;
  • 6 years as a Data Scientist - a strong background in ML concepts and models;
  • Hands-on experience with Python, especially with data science ML libraries (regression & classification algorithms e.g. XGB or LGBM, recommendation system algorithms, etc.;
  • Understanding of databases and SQL for data retrieval;
  • Monitoring and alerting tools (e.g. Grafana, Kibana).

Will be a plus

  • Knowledge in the programmatic advertising landscape – DSPs, SSPs, exchanges – significant advantage;
  • Experience with relational (e.g. Vertica, VoltDB) and non-relational (e.g. MongoDB) databases;
  • Experience with PMML.

What we offer

  • Help and support from our caring HR team;
  • 20 days of vacation;
  • Purchase the necessary software.
  • Health insurance coverage.
  • Multisport coverage (Poland).
  • Mobilization reservation available upon successful completion of the probation period (for Ukrainian colleagues).
  • The exchange of experience and work with talented colleagues;
  • Last but not least - valuable compensation for your efforts.

Apply free: 3 jobs are on us✨ Tailor my resume for this jobPrepare with the Apply kitMore remote data scientist jobs →

Find my remote job matches →
Ghost Job Detector: Check carefully
  • Open 5 months
  • No pay listed
Signals, not proof. Check the company's page before you spend time on it.
Free to build · no sign-up

A resume that gets past the first 6 seconds

Recruiters skim. The Psst resume coach fixes what makes them skip you, line by line, and one tap tailors it to the exact job you're applying to.

  • 1Every line checkedWeak starts, clichés and AI-sounding phrases flagged, with a 3-question fix.
  • 2Tailored to the jobSee which skills and tools from the ad your resume is missing. Try it free on one of your matches.
  • 3Ready for remoteTime zone, tools and proof you work on your own, the things remote teams look for.
  • 4Looks the partOne page, 6 designs, 8 colours and a matching cover letter, free to build. Premium downloads the PDF and Word files.
Try the resume coach →Compare Premium

Set up your job alert