Principal Engineer, Platform

Smartly

Confirmed live yesterday High trust
Hybrid

Quick summary

Work type
Hybrid
Location
Helsinki, Uusimaa, Finland
Posted
77 days ago
Freshness
Confirmed live yesterday

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Salary context

How this pay compares to similar roles

Similar $200k
$129k most similar roles pay here $269k

This listing doesn't post a salary. Most similar roles pay $169,550–$231,000.

Based on 240 similar postings.

Employer

About Smartly

Smartly (formerly Smartly.io) is a leading AI-powered advertising technology company that unifies creative production, media buying, and campaign intelligence into a single, automated platform

Smartly currently has 16 open roles on FindRole.

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At a glance

TL;DR · Principal Engineer, Platform

Principal Engineer, Platform joins the Platform Group to serve as a technical expert guiding teams through complex challenges involving large-scale databases, distributed systems, and infrastructure capabilities. This role focuses on shaping the technical direction of the platform, improving scalability and reliability, and enhancing developer productivity. Key responsibilities include defining how AI agents interact with internal systems, designing automation platforms, and managing database architecture including sharding and replication strategies. The candidate will lead cross-team projects, conduct design reviews, and perform hands-on technical contributions to resolve performance bottlenecks. Required expertise includes experience with distributed systems, relational database architecture, and high-availability production environments. Preferred skills include knowledge of analytical databases like ClickHouse, BigQuery, or Snowflake, as well as infrastructure and cloud platform expertise for building robust data foundations and ensuring operational excellence across the organization.

What does a Engineer earn?

Median $185000 from 249 postings across 48 companies.

See salary data

What you'll do

  • Define how AI agents can safely and effectively interact with platform data and internal systems.
  • Shape the technical vision and architecture for the company's automation platform to ensure scalability.
  • Design architectures for combining multiple large-scale datasets into a unified, accessible data foundation.
  • Manage the architecture and operational models of large databases, including sharding, replication, and scaling strategies.
  • Drive execution on high-priority initiatives through hands-on technical contributions, design reviews, and prototyping.
  • Identify and resolve scalability, reliability, observability, and performance bottlenecks across critical systems.
  • Lead complex cross-team projects that advance the long-term platform architecture and engineering standards.

What we're looking for

  • 3+ years experience operating at Staff, Principal, Lead Engineer, or equivalent level driving technical strategy across multiple teams.
  • Proven track record leading multi-quarter technical initiatives spanning 3+ engineering teams to improve scalability and reliability.
  • 5+ years of experience operating production systems where relational database architecture and high availability were critical concerns.
  • Strong understanding of distributed systems including consistency, availability, partition tolerance, replication, and sharding.
  • Demonstrated success influencing technical direction without direct managerial authority.
  • Ability to communicate complex technical topics clearly to a wide range of stakeholders.
  • Experience with analytical databases such as ClickHouse, BigQuery, or Snowflake is preferred.
  • Experience designing systems that safely expose capabilities and data to AI agents is preferred.

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