SM
Smartly· HQ in Elielinaukio 2G, Helsinki, Finland

Software Engineer, Large-Scale Data Systems

Location: Helsinki, Uusimaa, Finland · Category: Data, AI & Analytics · Seniority: Mid-Level · Posted: August 1, 2026 · Verified: Nov 2, 2026

Role Overview & Description

This Software Engineer role builds a large-scale data storage and processing platform for cross-platform advertising, handling billions of records per day. You will design and implement data pipelines, contribute to architecture, and build APIs for internal and external consumers, while migrating from Ruby on Rails to a more scalable stack. Requires 3-5 years of experience, strong programming skills (Python, Scala, or Java), and familiarity with data processing frameworks and streaming systems, with hybrid work from Helsinki.
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Company IntelligenceVerified Profile
SM

Smartly

smartly.io

Cross-channel advertising software for creative, media and measurement.

Headquarters: Elielinaukio 2G, Helsinki, Finland

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