Senior Data Scientist

Job not on LinkedIn

🕒 July 27

🇵🇱 Poland – Remote

💵 PLN25k - PLN30k / month

⏰ Full Time

🟠 Senior

📊 Data Scientist

👻 Ghost score 20%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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The Codest

WebsiteLinkedInAll Job Openings

51 - 200 employees

💼 Consulting

📦 Logistics

🏥 Healthcare

Consulting • Logistics • Healthcare

The Codest is an international software development company with its headquarters in the United Kingdom and tech hubs in Poland. Specializing in building IT teams and digital services, The Codest provides high-quality software development solutions for enterprises, scale-ups, and software vendors. They focus on supplying experienced senior developers in areas such as backend and frontend development, cloud engineering, and data engineering. Known for their expertise in project development and staff augmentation, The Codest helps companies enhance their IT departments by offering top-notch developers. The company is dedicated to providing innovative solutions and supporting digital transformation for its clients across various sectors including fintech, e-commerce, and adtech.

📋 Description

• Drive the design, refinement, and evaluation of ML scoring models (e.g., CTR, CVR, and RoAS), integral to core bidding logic. • Architect model strategies for complex solutions integrating user, product, and placement signals, ensuring readiness for high-throughput and low-latency environments. • Partner with engineering and business stakeholders to translate strategic goals into measurable modeling outcomes and technical roadmaps. • Provide technical leadership and quality assurance for Data Science workstreams within the project scope to ensure alignment with production standards.

🎯 Requirements

• Extensive hands-on experience in designing, training, and improving Deep Learning models for business-critical production use cases. • Proven expertise in deep learning frameworks such as PyTorch or TensorFlow, as well as strong practical knowledge of Pandas and NumPy. • Advanced SQL skills, preferably including analytical SQL used in large-scale data environments. • Strong experience with public cloud infrastructure, preferably Google Cloud Platform, including ML-oriented services such as Vertex AI and Vertex Pipelines. • Proven ability to lead end-to-end model development, from problem framing and feature design to evaluation and production handoff. • Strong engineering foundations, including writing production-level, testable, and documented Python code, with familiarity with CI/CD practices. • Ability to mentor other Data Scientists and raise modeling standards across the team. • Relevant academic degree or extensive professional experience in a STEM field (e.g. Computer Science, Mathematics, Mathematical Statistics, Quantitative Methods, or Physics). • English level min. B2. • Nice to have: Experience in developing ML models for low-latency online applications. • Experience within the advertising or marketing domains. • Demonstrated experience in developing ML models for predicting business events like clicks or conversions (i.e., Click-Through Rate (CTR) and Conversion Rate (CVR) modeling). • Proficiency in traditional machine learning techniques, such as Gradient Boosted Trees. • Experience in mentoring, technical leadership, or coordinating model development across a broader team. • Practical use of AI-assisted coding tools to improve engineering productivity and quality.

🏖️ Benefits

• 25–30k PLN on a B2B contract • Paid days off on public holidays in the case of a monthly fixed-fee settlement • Access to the Worksmile platform, where you receive 300 PLN each month to spend on gift cards or various services • A work environment that values growth and innovation - you bring the ideas, and we want to hear them 😉