Customer Data Scientist

Hello and welcome to start your next journey with Sellforte! 👋

We are on a mission to help retailers and consumer brands accelerate their growth by making smarter data-driven marketing decisions. From day one, Sellforte has been inherently a data science company — our product is built on advanced modelling rather than vanity metrics. Since 2017, we have delivered a state-of-the-art Marketing Mix Modelling (MMM) solution that helps marketing teams and agencies holistically evaluate and improve the effectiveness of their marketing and promotional activities.

Recently, we have entered an exciting new chapter. Building on our strong Bayesian foundations, robust analytical engine, and the AI capabilities embedded in our product, we are expanding into new use cases and developing toward autonomous media buying and ad-group-level optimisation. This evolution brings more complex modelling challenges, more experimentation, and the opportunity to shape the next generation of AI-driven marketing intelligence.

We are not a company that only shows cool marketing metrics or fancy dashboards – we deliver real, measurable impact through rigorous data science and AI.

You will join a team of roughly twenty bad-ass Data Scientists who form the backbone of our business, working alongside talented experts from Customer Success, Software Development, Product, Sales, and more. You’ll work directly with both large and emerging marketers and consumer brands, helping them improve performance with insights grounded in high-quality data and modelling.

🎯 What you will do as a Customer Data Scientist:

As a Customer Data Scientist, your primary goal is to support our Enterprise customers by ensuring the Sellforte service runs smoothly and consistently delivers clear value. You’ll work as part of our Customer Delivery team alongside Customer Success Managers and fellow Data Scientists. More specifically, you will:

• Conduct exploratory data analysis on customer data (using tools such as python, pandas/polars, matplotlib/plotly) to diagnose customer-specific issues and solve real business problems.
• Help onboard new customers to our marketing analytics platform: set up data flows from the customer to Sellforte, configure the models and service, and communicate technical solutions clearly and confidently.
• Ensure our modelling and product pipelines are running reliably, and validate modelling results, forecasts, and recommendations.
• Participate in customer meetings—especially with larger Enterprise customers—to support the Customer Success Manager with technical and data science expertise.
• Contribute to product development by sharing insights, identifying new opportunities, and shaping or implementing new features and automation within the product.
• Collaborate with other Data Scientists to build and train predictive machine learning models, including time-series Bayesian models to infer causal impacts and forecast sales.

🌤 What we hope from you:

• Relevant experience as a Data Scientist, Analytics Consultant, or in a similar role, where you have applied data analysis or ML/AI techniques to real business challenges.
• Strong communication skills in English. This is a customer-facing role, so the ability to explain complex technical topics to non-technical audiences is essential.
• A problem-solving mindset and the ability to quickly identify and analyse business problems using data — combined with a positive, proactive, get-things-done attitude.
• Hands-on technical skills, especially in Python and common data analysis libraries.
• Location in the Helsinki/Espoo region, or willingness to relocate. We offer relocation support to Finland. For GDPR and contractual reasons, the role must be performed from within Europe.

🎯 What Sellforte offers to you:

• An open, easy-going startup/scaleup environment with genuinely nice colleagues and a shared ambition to build something great. 🚀
• A truly international team — roughly 10 nationalities across 3 countries — bringing diverse perspectives and a global mindset.
• A globally unique product built with modern technologies, giving you the chance to work with a cutting-edge data science and engineering stack.
• A low hierarchy and an enjoyable ride. We value kindness, collaboration, and finding that extra spark of fun that makes the journey meaningful. Sellfort