Senior Data Scientist
Krakow
Development – Product Engineering /
Full-time /
Hybrid
Are you a data scientist passionate about building AI that can level the playing field for small businesses? We're looking for a Senior Data Scientist to help architect the next generation of agentic AI systems that make enterprise-level marketing accessible to businesses worldwide.
You won't just be building models—you'll be a key contributor on a high-impact team, democratizing AI and seeing your work directly empower thousands of SMBs. In our flat hierarchy, your ideas will shape our product direction, putting you at the forefront of one of the most exciting areas in machine learning.
What You'll Build:
- Architect and implement foundational AI data platforms and robust MLOps pipelines to support model training and deployment at scale.
- Build and deploy end-to-end, production-ready agentic AI systems that autonomously execute marketing strategies for our customers.
- Drive the advancement of our LLM capabilities through RAG, fine-tuning, and RLHF, while researching and integrating emerging AI technologies into practical solutions.
- Conduct deep statistical analysis to uncover the patterns and metrics that drive successful marketing campaigns, translating insights into product improvements.
- Collaborate closely with product and engineering teams to integrate AI models into scalable, production-ready systems that deliver significant business value.
What we're looking for:
- 7+ years of relevant experience in data science or machine learning.
- A proven track record of building and deploying sophisticated machine learning solutions, with direct experience in agentic systems, NLP, or deep learning.
- Demonstrated success architecting scalable data pipelines and ML platforms that support high-volume model training and inference.
- Strong proficiency in the Python data science ecosystem (e.g., scikit-learn, TensorFlow, PyTorch, Hugging Face).
- Hands-on experience with RAG architectures, model fine-tuning, RLHF, and comprehensive model evaluation frameworks.
- Advanced SQL skills and expertise in data warehousing, ETL processes, and data governance best practices.
- An ability to identify high-impact AI opportunities and a natural instinct for uncovering meaningful patterns in data, driven by an insatiable appetite for learning.
This is an exciting time to join ActiveCampaign as we build out our new office in Poland. You will be a large part of developing our office culture in this new Krakow hub location.
About ActiveCampaign:
ActiveCampaign is an AI-first, end-to-end marketing platform for people at the heart of the action. It empowers teams to automate their campaigns with AI agents that imagine, activate, and validate–freeing them from step-by-step workflows and unlocking limitless ways to orchestrate their marketing.
With AI, goal-based automation, and 950+ app integrations, agencies, marketers, and owners can build cross-channel campaigns in minutes–fine-tuned with billions of data points to drive real results for their unique business.
ActiveCampaign is the trusted choice to help businesses unlock a new world of boundless opportunities–where ideas become impact and potential turns into real results.
As a global multicultural company, we are proud of our inclusive culture which embraces diverse voices, backgrounds, and perspectives. We don’t just celebrate our differences, we believe our diversity is what empowers our innovation and success. You can find out more about our DEI initiatives here.
Perks and Benefits:
At ActiveCampaign, we prioritize employees’ well-being and professional growth by cultivating a culture centered on collaboration and innovation. When you join our team, you’ll not only have the opportunity to make a significant impact, but also enjoy a range of benefits tailored to support your personal and career development.
Here are some of the benefits we offer:
-Comprehensive Health & Wellness: Top-tier benefits package that includes medical and dental benefits paid 100% by ActiveCampaign for you and 50% for your dependents, and reimbursements on vision expenses. In addition, employees receive complimentary access to telehealth services, and a free subscription to Calm.
-Growth & Development: Access to LinkedIn Learning, professional development programs, and career growth opportunities in a fast-growing organization.
-Generous Paid Time Off: Recharge and take the time you need to maintain work-life balance.
-Total Rewards: Pension scheme with matching up to 1.5% of your contribution, MultiSport Plus card to support your active lifestyle, home office stipend to cover your commuter or work from home expenses, and a four-week paid sabbatical with bonus after five years.
-Collaborative Culture: Work alongside brilliant, passionate colleagues in an environment that values innovation, teamwork, and mutual support.
ActiveCampaign is an equal opportunity employer. We recruit, hire, pay, grow, and promote no matter of gender, race, ethnicity, sexual orientation, marital status, political opinion, national origin, social origin, parentage, workers union membership, economic status, religion, age, health condition, disability or any other grounds protected by law.
Our Employee Resource Groups (ERGs) strive to foster a diverse inclusive environment by supporting each other, building a strong sense of belonging, and creating opportunities for mentorship and professional growth for their members.
