Principal Engineer

Principal Engineer, Platform

Company: Smartlyio
Location: helsinki
Posted: 2026-09-09

Principal Engineer to guide technical direction, shape platform architecture, and drive initiatives improving scalability, reliability, and developer productivity. Define AI agent interaction with platform, data, and systems. Lead cross-team projects advancing platform architecture. 3+ years at Staff, Principal, Lead Engineer level, driving technical strategy across multiple teams. Proven track record leading multi-quarter technical initiatives. 5+ years operating production systems with focus on database architecture, scalability, reliability, and performance. Strong understanding of distributed systems and experience with architectural decisions involving consistency, availability, partition tolerance, replication, and sharding. Demonstrated success influencing technical direction without direct managerial authority. Ability to communicate complex technical topics clearly to stakeholders.