Senior Data Platform Engineer - End-to-End Ownership

NestAi Oy; Helsinki; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

ESOP (Stock options)

Healthcare by Mehilainen

Epassi Flex benefit

Lunch benefit

Mental wellbeing services

Holiday allowance

Phone benefit

Mac or PC choice

Team lunches & events

Job summary

NestAI in Helsinki is seeking a Senior Software Engineer for the Data Platform to build the core storage, streaming, and compute infrastructure. This build role focuses on foundational systems rather than running data pipelines, offering true ownership from early design to production in a security‑driven environment.

You will collaborate with every R&D chapter to understand needs, shape the platform’s evolution, and mentor engineers to raise the team’s technical bar.

Qualifications

• Solid programming skills in Python and a strong grounding in software architecture and design principles.
• Experience designing, tuning, and operating distributed storage and streaming architectures (e.g., Iceberg, Kafka) under high-throughput constraints.
• Production experience running infrastructure in containerised, cloud-native environments with Kubernetes and Docker.
• Proven track record of designing, deploying, and operating complex backend or data systems in production at senior level.
• Experience mentoring other engineers and raising the technical bar within a team.

Responsibilities

• Own the technical direction of the platform, including streaming, lakehouse storage, and compute infra.
• Apply solid software architecture and design principles to long-lasting systems as NestAI scales.
• Collaborate with every engineering chapter in R&D to understand needs and shape next features.
• Take ownership of end-to-end features from design to production in an evolving foundation.
• Mentor engineers and share context on platform architecture to raise technical judgment.

Skills

Python

Distributed systems

Mentoring

Tools

Kubernetes

Docker

Job description

NestAI in Helsinki is seeking a Senior Software Engineer for the Data Platform to build the core storage, streaming, and compute infrastructure. This build role focuses on foundational systems rather than running data pipelines, offering true ownership from early design to production in a security‑driven environment.

You will collaborate with every R&D chapter to understand needs, shape the platform’s evolution, and mentor engineers to raise the team’s technical bar.