Senior Systems Engineer

Role Description The Senior Systems Engineer will drive the design, development, and operationalization of advanced large‑language‑model capabilities across a cloud‑based analytics ecosystem. Lead innovation efforts around cutting‑edge AI, owning the architecture and strategy for fine‑tuning, retrieval‑augmented generation (RAG), agentic frameworks, and domain‑specific model adaptation. Guide the development of high‑impact prototypes, oversee the evolution of scalable LLM pipelines, and ensure robust governance, security, and performance across all model implementations. Partner with engineering, product, and data teams, providing technical leadership, evaluating emerging LLM technologies, setting best practices, and driving transformation through the practical, safe, and effective deployment of generative AI. Qualifications 4 years with AS/AA; 2 years with BS/BA; 0 years with MS/MA; 6 years with HS Diploma. Deep expertise in LLM architectures, transformer models, and modern generative AI techniques. Demonstrated experience leading fine‑tuning efforts, parameter‑efficient training (e.g., LoRA/PEFT), and advanced prompt engineering. Proven ability to design and implement end‑to‑end RAG pipelines, including embedding workflows, retrieval optimization, and vector database integrations. Hands‑on experience with one or more LLM frameworks or orchestration toolchains (such as LangChain, LlamaIndex). Strong Python development skills and experience with distributed compute or GPU‑accelerated training environments. Experience architecting and deploying AI/ML or LLM workflows within cloud platforms such as Azure, AWS, or GCP. Solid understanding of MLOps/LLMOps practices, including versioning, CI/CD, automated testing, monitoring, and model governance. Ability to lead technical discussions, mentor team members, and communicate complex AI concepts to diverse audiences. Ability to obtain/maintain a Public Trust clearance. Must have US citizenship or Green Card holder and must have been in the USA for 3 of the last 5 years. Requirements Experience implementing multi‑agent or agentic AI systems for task automation and reasoning. Familiarity with LLM evaluation frameworks, structured benchmarking, or human‑in‑the‑loop refinement methods (e.g., RLHF‑style workflows). Expertise with advanced retrieval techniques such as hybrid search, graph retrieval, or long‑context optimization. Experience optimizing model inference through quantization, model compression, or model distillation. Background integrating LLM services with large‑scale analytics environments (e.g., Databricks, Snowflake, Spark). Strong skills in exploratory data analysis, feature engineering, and data modeling to support domain‑specific LLM customization. Experience developing innovative prototypes or POCs that leverage state‑of‑the‑art generative AI approaches. Exposure to emerging architectures such as mixture‑of‑experts models, long‑context transformers, or experimental generative frameworks. Company Description Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world’s leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can’t be done by solving the most daunting challenges facing our customers.