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Fullstack Software Engineer, Kafka

Finland💼 Full-time🗓 2026-08-31 → 2026-09-26

Core

Build end-to-end features for a cloud data platform, focusing on orchestrating managed Apache Kafka services, maintaining an open-source Schema Registry (Karapace), and developing React interfaces.

Role type

Fullstack Software Engineer (Python/React)

Builds

Production Python services, Karapace open-source components, and React/TypeScript user console interfaces.

Domain

Cloud data platforms, distributed streaming systems, open-source infrastructure.

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Python (async/await, type annotations), React/TypeScript, distributed systems fundamentals, schema formats (Avro, JSON Schema, Protobuf), Linux debugging, AI coding tools

Preferred skills

Apache Kafka internals, Kafka Connect development, public cloud experience (AWS/GCP/Azure), Java, observability tooling

Technologies

Python, React, TypeScript, Karapace, Apache Kafka, Buildkite, GitHub Actions, Avro, JSON Schema, Protobuf

Responsibilities

Extend and maintain Karapace schema compatibility and REST Proxy features; manage connector ecosystem upgrades and security fixes; design APIs and build async Python backends; wire up React/TypeScript views; investigate and resolve production issues across the stack; participate in design reviews and technical planning.

Seniority

Mid-Senior, hands-on IC

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