Principal Software Engineer

Description

The company is building the technology behind inspirational content and retail campaigns for customers. The content performance data it produces and manages feeds business steering, operations, and personalisation and optimisation systems.

The Campaign and Content Platforms team is a cross-functional domain team of more than 50 engineers, product managers and product designers, based in Helsinki and Berlin. The team builds platforms that serve all teams, so content moves through the same publishing pipelines and processes.

The company does not discriminate on gender identity, sexual orientation, personal expression, ethnicity, religious belief or disability status. You may leave your photo, age or marital status off your application, and candidates are assessed only on qualifications and merit. Tell us about any accommodations you need during hiring.

Responsibilities

• You own the architecture, development and quality of the department's Data Products.
• You design, build and maintain scalable ELT pipelines using Databricks Delta Live Tables (DLT).
• You work with source system owners to define and align Data Contracts.
• You implement and oversee Data Governance and security standards in Unity Catalog.
• You carry out technical and root cause analysis to improve data quality and pipeline reliability.
• You build and maintain strong working relationships with development teams and the company Data Foundation.
• You document current working methods and lessons learned, and share them to build a high-performance data culture.

Requirements

• You have extensive experience with the Databricks ecosystem: Unity Catalog, Delta Live Tables and Workflows.
• You understand the Medallion Architecture (Bronze, Silver, Gold) and Delta Lake internals in depth.
• You are proficient in Apache Spark (PySpark) and Python for large-scale data processing.
• You have several years of experience building and maintaining scalable streaming and batch pipelines, including CDC (Change Data Capture) from RDBMS sources such as MySQL via BinLogs.
• You know Infrastructure as Code (Terraform), Docker, Git with trunk-based development, and DevOps principles.
• You can turn complex business requirements into robust, de-normalised data models tuned for Lakehouse performance.
• You have a good grasp of AWS cloud infrastructure, REST APIs and secure data exchange.
• You communicate clearly in English, both verbally and in writing, and document designs and processes accurately.
• You are encouraged to apply even if you do not meet every requirement.

Conditions

The role is based in Helsinki or Berlin, as the team is located there.

Relocation assistance is available for international candidates.

Benefits

• A culture of trust, empowerment and constructive feedback, with open source involvement, meetups, game nights, tech talks, product demos, parties and events.
• More than 70 internal technical and social guilds, an internal tech academy and internal blogs.
• A competitive salary, an employee share shop, a 40% the company shopping discount and discounts from external partners.
• Centrally located offices, public transport discounts, municipality services, flexible working hours, extra holidays and paid volunteering time off.
• Free drinks and fruit, plus a range of sports and health offerings.
• Extensive onboarding, mentoring and personal development, and an international team of experts.