We're looking for a Senior Software Engineer who views data through the lens of high-quality software engineering. You will design sophisticated data architectures and implement rigorous best practices to ensure that our systems are resilient and scalable. This is a multi-faceted role where you will build the software necessary to manage and move data across our organization. What your day could consist of: Architecting and Building Pipelines: Design, develop, and maintain high-throughput data pipelines to move and transform data across our ecosystem Data Modeling and Schema Design: Execute DDL and DML operations to manage and optimize our data structures Engineering Excellence: Implement rigorous software engineering best practices, including automated testing, CI/CD pipelines, managing infrastructure as code, and monitoring of system health Collaboration: Partner with Data Science and AI teams to engineer feature stores and automated MLOps Pipelines, enabling AI models to move from research to production Technical environment: Databases: MySQL, Amazon Aurora, Amazon RDS, PostgreSQL Data Storage and Analytics: AWS S3, Apache Iceberg, Snowflake, Apache Druid, Looker Data Processing and Transformation: Apache Spark, DBT Languages: Python (primary) Infrastructure as Code: Terraform Containerization and Orchestration: Kubernetes, Docker, Airflow What is needed: Engineering Experience: 4+ years professional software engineering experience, with a proven track record of building and maintaining production-grade data systems Data Architecture Experience: Deep understanding of modern data stack components. You should be comfortable designing and building schemas that balance performance with scalability Infrastructure: Proficient with managing your own infrastructure in code, using tools like Terraform Software rigor: Strong background in software engineering best practices, including automated testing and CI/CD Advanced SQL and Optimization: Expert-level SQL skills (especially MySQL); you don't just write queries, you optimize for performance and scalability Communication: You are able to have technical discussions internally as well as translate these ideas into non-technical conversations with stakeholders 184,000 zł - 276,000 zł a year Perks and Benefits: 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.