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. Sellforteans are warm-hearted people who enjoy delivering impact and growing the business together.
• Opportunities for growth — both business and personal. We actively foster a strong product and data science culture through regular talks, knowledge sharing, and internal presentations. 🍕
• Flexibility to find the work–life balance that suits you. We understand that nine-to-five doesn’t work for everyone. While our culture supports both remote and in-office work, we do prefer that you spend at least part of your week at the office to collaborate, connect, and build things together, especially at the start. Many of us enjoy the energy of working on-site, though we still offer flexibility for remote work when needed — and your preferences are always taken into account.
• Starting salary for Medior level: €4,200–5,000 per month.
• A wide range of benefits, including healthcare, lunch and activity benefits, five weeks of paid holiday from day one, phone and equipment, an options program, and home care services for sick children.

How to apply:

Does this role sound like the next step you’ve been looking for? If yes, we’d love to start this journey together and get to know you!

Our recruitment process is designed to be transparent, collaborative, and meaningful. It typically includes:

• An Intro Call with our Co-founder & Chief Science Officer
• One or two interview sessions, a conversational interview and a hands-on technical data science case exercise
• Opportunities to meet members of your potential future team
  

During the process, you’ll get to meet several Sellforteans and see the product you’d be working with. We aim to keep you updated throughout and provide weekly status updates so you always know where things stand.

If you’d like more information about the role, feel free to reach out to our Co-founder & Chief Science Officer, Mikko Ervasti, at mikko@sellforte.com.

We look forward to hearing from you! 😊