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Senior Data Scientist

SmartlyHelsinki, Uusimaa, FinlandData Science
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Salary
Not listed
Job type
Full-time
Posted
6 Feb 2026
Status
Open · checked 7d ago

About this role

Smartly is seeking a Senior Data Scientist to join their AI Platform Team in Helsinki, Finland, focusing on machine learning solutions for advertising campaigns. This hybrid role suits growth-minded data professionals with a strong background in applied machine learning and cloud infrastructure.

Role Overview

The Senior Data Scientist position places you within the AI Platform Team at Smartly in Helsinki. You will take charge of building, experimenting with, and deploying AI-driven solutions that assist marketers in optimizing ad creatives and campaigns. This hybrid opportunity requires working from the Helsinki office three days a week and involves driving high-impact projects from initial problem framing to production monitoring.

Key Responsibilities

Design, build, and deploy scalable machine learning solutions with a strong focus on maintainability, stability, and observability.
Own projects from end to end, handling data exploration, model validation, and production monitoring.
Work with diverse datasets spanning images, video, audio, text, and structured performance metrics.
Analyze large-scale datasets to extract insights that guide product strategy and customer success.
Collaborate closely with software engineers, machine learning engineers, and cross-functional stakeholders to translate business needs into technical solutions.
Stay current on emerging AI innovations, particularly in generative AI, computer vision, natural language processing, and model explainability.

Requirements

At least 5 years of professional experience in data science or applied machine learning.
A minimum of 2 years of experience working with cloud infrastructure such as AWS or GCP.
Solid foundational knowledge in calculus, statistics, and linear algebra.
Fluency in Python, with additional experience in Java or C++ considered a plus.
Hands-on expertise utilizing modern machine learning frameworks like PyTorch or TensorFlow.
Familiarity with MLOps tools and principles such as Kubeflow or MLflow.
Strong expertise in model design, feature engineering, monitoring, diagnostics, and evaluation.
Excellent English verbal and written communication skills, with the ability to explain complex technical findings to diverse audiences.
An M.Sc. degree in a relevant field is preferred.
Ability and willingness to work in a hybrid model from the Helsinki office three days a week.

Nice to Have

Experience with programming languages such as Java or C++.
An M.Sc. degree in a relevant field.

Skills and Tools

Python, PyTorch, TensorFlow
AWS, GCP
Java, C++
MLOps tools (Kubeflow, MLflow)
Computer Vision, Generative AI, Natural Language Processing
Feature engineering and model evaluation

Salary and Benefits

Generous healthcare packages and mental health services.
Paid holidays, family leave, and a strong focus on work-life balance.
Competitive compensation, performance-based rewards, and equity options.
Ample opportunities for career development and knowledge sharing.
Hybrid workplace model with the option to work abroad for up to 30 days.

About the Company

Smartly is an AI-powered advertising technology company that integrates media, creative, and intelligence for global brands. The company manages creative and media for over 700 brands worldwide, handling billions of impressions and ad spend across major platforms like Google, TikTok, Facebook, and Instagram. Smartly operates globally with a diverse multinational team spanning multiple countries and maintains a strong commitment to inclusion and transparency.

How to Apply

Interested candidates should visit the official Smartly careers page to submit their application for the Senior Data Scientist position.

Skills and tech stack

PythonPyTorchTensorFlowAWSGCPJavaC++Computer VisionMLOps

Questions candidates ask

What are the main location requirements for this job?

The role is based in Helsinki, Finland, and requires working in a hybrid capacity from the office three days a week.

How many years of experience are required?

Candidates must have at least 5 years of professional experience in data science or applied machine learning, along with 2+ years of cloud infrastructure experience.

What technical skills are necessary for this role?

Key technical requirements include fluency in Python, experience with PyTorch or TensorFlow, knowledge of AWS or GCP, and familiarity with MLOps concepts.

What benefits does Smartly offer employees?

Employees receive competitive compensation, equity options, healthcare packages, mental health services, paid holidays, family leave, and the option to work abroad for up to 30 days.

How can I apply for this position?

You can apply directly through the official Smartly careers website.

Ready to apply?

The application is on the official Smartly careers page.

Apply on company site