Python Developer – LLM Post-Training (Remote | San Francisco) at Parsewave · Remote only · 0 - 5 years · $15K - $15K / yr (ESOP available) · Bootstrapped · Remote only · Posted 6 Sep 2026

We are a San Francisco-based AI infrastructure company working with leading frontier AI labs to build post-training data and evaluation infrastructure for foundation models. We are hiring a Python Developer to create high-quality datasets, reinforcement learning environments, and benchmarking pipelines used to improve and evaluate state-of-the-art LLMs. This is a remote role with flexible working hours.
Responsibilities
* Create and curate datasets for LLM post-training (SFT, RLHF, RL, preference optimization).
* Build and maintain RL environments for agent evaluation.
* Develop Python tooling for dataset generation, validation, and transformation.
* Evaluate models on custom benchmarks and testing pipelines.
* Collaborate with research and engineering teams to deliver client-specific post-training datasets.
* Work with terminal-first development workflows and cloud infrastructure.
Required Skills
* Strong Python programming skills.
* Understanding of LLM fundamentals and post-training concepts (SFT, RLHF, RL).
* Experience working with structured data (JSON, CSV, YAML).
* Git, Linux/Unix command line, and solid software engineering fundamentals.
Good to Have
Experience with RAG, agentic AI systems, Hugging Face Transformers, LoRA/PEFT, LangChain or LlamaIndex, vector databases (FAISS, Qdrant, Milvus, Pinecone, Weaviate, ChromaDB), Docker, AWS/GCP, FastAPI/Flask, Bash, CLI tooling, model evaluation frameworks, benchmarking, and AI infrastructure.
Compensation
Base Salary: USD $1,250/month
Equity: ESOP/Equity package included.
Performance Bonuses: Up to USD $4,000/month (in addition to base salary).
Location
Remote (Worldwide)
Work Hours
Flexible, remote-first, asynchronous work environment.
How to Apply
Apply here: https://tally.so/r/wLReJG
Please complete the application form and submit the required details. Only shortlisted candidates will be contacted.

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1.Strong Data Scientist / AI Engineer / Generative AI Engineer profile.
2.Mandatory (Experience 1) - Must have 3+ years of hands-on experience in Data Science, Artificial Intelligence, Machine Learning, Deep Learning, NLP, or Generative AI application development.
3.Mandatory (Experience 2) - Must have strong hands-on experience in Python programming, backend development, API development, and production-grade application support
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