Member of Technical Staff

Reflection
Full-time Finland, Finland Other-General
Posted:
March 03, 2026
Location:
Finland, Finland, Finland

Job Description

Our Mission

Reflection's mission is to build open superintelligence and make it accessible to all.

We're developing open weight models for individuals, agents, enterprises, and even nation states. Our team of AI researchers and company builders come from DeepMind, OpenAI, Google Brain, Meta, Character.AI, Anthropic and beyond.

About the Role

  • Own the development of Reflection's open post-training and inference and deployment ecosystem, creating the standard for how the community customizes and interacts with our models

  • Build the RL and SFT tooling that external developers use to customize, fine-tune, and align models for their specific need, as well as taking the lead on inference and deployment.

  • Extend or integrate with existing best-in-class frameworks (e.g., VeRL, torchtune, Tunix, vLLM, SGLang) to meet developers where they are.

  • Create Reflection-native librar...

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Job Overview

Job Type: Full-time
Location: Finland, Finland
Posted: March 03, 2026
Deadline: April 12, 2026