Applied AI Engineer

You’re motivated by real-world outcomes and want your work to directly impact national security missions.

You care about rigor: clean data, measurable evaluation, and repeatable experiments beat demos.

You balance research curiosity with product instincts—you ship, observe, iterate, and harden.

You’re comfortable working across cloud and on-premises constraints and adapting to the environment.

You communicate clearly with engineers and non-ML partners, and you write documentation people use.

You think in systems: models, retrieval, infrastructure, and feedback loops all have to work together.

You thrive in fast-moving teams with high standards, direct feedback, and high ownership.

You have deployed models to production and supported them through real-world usage and incidents.

You have experience with distributed training systems and performance debugging at scale.

You have implemented quantization or other optimization techniques to improve inference efficiency.

You have strong prompt engineering and model alignment instincts for reliability and control.

You have experience building MLOps/LLMOps/AgentOps practices (versioning, rollout, monitoring).

Deep learning stacks: PyTorch, TensorFlow, JAX

LLMOps and serving: vLLM, TensorRT, ONNX

Retrieval and storage: pgvector, ChromaDB, Pinecone, Milvus, Weaviate; relational/graph databases

Orchestration: Pydantic-AI, LangChain/LangGraph, CrewAI

Infra: Docker, Kubernetes; cloud platforms (AWS, GCP, Azure)

Experiment and artifact tracking: dataset/prompt/model versioning

Must be eligible to obtain and maintain a U.S. Government security clearance.

Benefits What's on the table:

Health. Medical, dental, and vision plan options. Life / AD&D, disability coverage options.

Family. Paid parental leave for eligible full-time employees. 12 weeks for birthing parents, 4 for non-birthing parents, 6 weeks for adoptive, foster, or intended parents through surrogacy.

Vacation. Paid holidays and flexible PTO. Take what you need.

Retirement. 401(k) with pre-tax and Roth options. HSA/FSA options, dependent care FSA.

Benefits vary by location, role, and eligibility. Full plan details provided during the interview and offer process.

If this role sounds like you, apply and share with us your interest

Due to U.S. government contract and security requirements, this role is limited to U.S. citizens. Some positions may also require eligibility to obtain and maintain a U.S. Government security clearance. Any active clearance requirement will be listed in the role description.

Twenty is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, veteran status, disability, or any other protected status, consistent with applicable law.

If you need a reasonable accommodation during the hiring process, let us know and we will work with you.