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Software Intern (LLM Fine-Tuning)
LocationRemote / Hybrid
- Greater Toronto Area
TypeInternship
- Fall/Winter
Reports toChief Product Officer
Apply for this role→
About The Role
We are looking for a Software Intern to help us adapt open-weight large language models to security and identity work. You will take a model from raw data to a measured result: preparing datasets, running fine-tuning jobs, and building the evaluations that tell us whether a change helped.
This is a Fall/Winter internship: hands-on work with real models and real GPUs, alongside the founding team. If you have already fine-tuned a model and want to do it on problems that matter, this is the role for you.
Responsibilities
What you’ll own.
Data & training
- Collect, clean, and prepare training and evaluation datasets.
- Fine-tune open-weight LLMs with SFT and parameter-efficient methods (LoRA / QLoRA).
- Run and monitor training jobs on GPUs, and make the most of limited compute.
Evaluation
- Build evaluation sets and benchmarks that reflect the tasks we care about.
- Compare models and training runs, and report clearly what worked and what did not.
Required Skills What you’ll bring day one.
Core
- PyTorch and the Hugging Face ecosystem (Transformers,
Datasets, PEFT).
- Hands-on experience with open-weight LLMs.
- Fine-tuning: SFT, LoRA / QLoRA.
- Dataset preparation for training and evaluation.
- Model evaluation.
- GPU fundamentals: memory, batch sizes, mixed precision.
Nice to Have
- Domain-adaptive or continued pretraining (DAPT).
- Synthetic data generation.
- CUDA.
- Docker.
- vLLM for serving and quick inference.
- Experiment tracking (Weights &
- Biases, MLflow or similar).
- Evaluation frameworks and harnesses.
- Reinforcement learning for LLMs.
Why Join Us 01
Train and evaluate real models, not a sandbox project.
02
Work directly with the founding team.
03
Learn how AI meets security and cryptographic identity.
Ready to apply?
Email your application directly to
[email protected]. Include the following so we can move quickly:
- Resume
- GitHub or portfolio
- One model you fine-tuned or evaluated: what you changed, how you measured it, and what you learned
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ARKION
Identity Infrastructure for an Autonomous World.
ArkionID manages certificates from issue to revocation. AgentID builds on it to give every AI agent its own short-lived ID. MachineID is next.
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📌 Software Intern (Toronto)
🏢 Arkion Identity Systems
📍 Toronto