Senior Data Scientist - Ads & Ranking ML (Low Latency)

Codest Ltd. Company No. 12590542, VAT number: GB363431020; Warszawa; On-site; PLN 279,000 - 335,000; Full time

Benefits offered by this job

Worksmile access

Growth-oriented environment

B2B contract: 25–30k PLN

Job summary

The Codest invites a Senior Data Scientist to join our international tech team. You will design, train and deploy ML models for Advertising and Ranking domains, shaping bidding logic and business outcomes across Europe and beyond.

You will collaborate with engineers and stakeholders to translate strategic goals into measurable modeling outcomes, ensure production-grade, low-latency solutions, and mentor teammates while advancing our ML platforms with PyTorch, TensorFlow, SQL, and Vertex AI in

Qualifications

• Expertise in ML models for advertising/ranking

Responsibilities

• Design, train, and evaluate ML scoring models for CTR, CVR, RoAS
• Architect model strategies for low-latency, high-throughput environments
• Collaborate with engineering and business stakeholders to translate goals into measurable outcomes
• Provide technical leadership and ensure production-grade quality for DS workstreams
• Mentor other Data Scientists and raise modeling standards across the team

Skills

Python

PyTorch

TensorFlow

SQL

Docker

GCP

Vertex AI

Vertex Pipelines

Deep Learning

Pandas

NumPy

English B2

Education

STEM degree

Tools

BigQuery

CI/CD

Job description

The Codest invites a Senior Data Scientist to join our international tech team. You will design, train and deploy ML models for Advertising and Ranking domains, shaping bidding logic and business outcomes across Europe and beyond.

You will collaborate with engineers and stakeholders to translate strategic goals into measurable modeling outcomes, ensure production-grade, low-latency solutions, and mentor teammates while advancing our ML platforms with PyTorch, TensorFlow, SQL, and Vertex AI in