Senior ML Engineer

Mixpeek; New York (NY); Hybrid; USD 180,000 - 240,000; Full time

Benefits offered by this job

Healthcare coverage 100% employee

401K with 2% company match

Equity in seed-stage business

Health reimbursement program

Flexible PTO

Competitive salary and equity

Job summary

Adelphi is seeking a Forward Deployed Senior Machine Learning Engineer to own end-to-end, agentic, full-stack systems built on frontier models for defense and intelligence customers. The role combines software development, LLM Ops, and secdevops practices in a fast-paced environment. The position is based in the DC/Metro area with 25% travel and a preference for active U.S.

government clearance. You will work with LangGraph, OpenAI Agents SDK, Claude Agent SDK, and similar tools to deliver

Qualifications

• Experience delivering end-to-end LLM-backed agentic systems for defense/intelligence contexts.
• Ability to integrate LLMs with secure, air-gapped or classified environments.
• Proficient in modern agent frameworks and evaluation/observability tooling.

Responsibilities

• Own end-to-end delivery of agentic, full-stack systems for defense/intelligence customers.
• Build and deploy ML services with LLMs, embeddings, RAG, and agent orchestration.
• Collaborate with customers to scope problems and deliver novel AI applications under constraints.
• Codify reusable patterns to speed up delivery and ensure reliability.

Skills

LLM Ops

SecDevOps

Agent frameworks

Prompt engineering

LangGraph

OpenAI Agents SDK

Claude tools

Tools

Docker

Kubernetes

AWS

Encryption

Job description

About Adelphi:

Adelphi's Vision is to build the biggest AI Deployment company for National Security, which requires talent that is extremely good at problem solving, gets excited about National Security challenges, and thrives in software factories. We're executing a Mission that (1) Identifies the core bottlenecks in Warfighting, Intelligence and the Enterprise, (2) Assigns top talent with backgrounds in systems and machine learning engineering, and (3) Finds repeatability in solution development to target similar offices across the DoW/IC. The business has 10x'd in under two years and has built trust with the senior most leaders at the Department of War and Intelligence Community.

About the Role:

The Forward Deployed Senior Machine Learning Engineer position requires a mix of software development, LLM Ops, and secdevops practices, resulting in an exciting, fast-paced engineering role. This role requires the ability to provide solutions for the full LLM stack, from the OS, storage, and network up to the API and transport layer. Experience in the defense or intelligence fields is required. You will own end-to-end delivery of agentic, full-stack systems built on top of frontier models, from first prototype to stable production, embedded alongside our defense and intelligence customers.

Location:

This role is based in the DC/Metro area; remote candidates will be considered with 25% travel expected.

Clearance Requirement:

An active U.S. Government clearance is strongly preferred, but we are open to clearance eligible candidates.

Is this you?

We are an AI-native engineering team. We expect every engineer to leverage LLMs and AI tooling as a core part of how they design, build, ship, and operate agentic systems that turn frontier-model capability into mission outcomes.

• You use AI coding tools (Claude Code, Cursor, Copilot) daily and instinctively.

• You prompt-engineer through complex architecture and debug sessions, leverage LLMs across the full development lifecycle, maintain a clear-eyed view of AI limitations in high-security contexts, and stay current with emerging models and tooling.

• Hands-on with modern agent frameworks and SDKs (LangGraph, OpenAI Agents SDK, Claude Agent SDK, AutoGen, or similar) and agent evaluation / observability tooling.

• Familiarity with MCP or similar LLM integration frameworks.

• You have a clear-eyed view of AI limitations. You know when to trust AI-generated output and when to verify.

Expectations:

• Own end-to-end delivery of agentic, full-stack systems from first prototype to stable production, embedded alongside defense and intelligence customers.

• Build and deploy ML services leveraging LLMs, embeddings, RAG, and agent orchestration into production environments, including classified and air-gapped ones.

• Work directly with customers to scope problems, sequence delivery, and ship novel AI applications under real-world constraints.

• Codify repeatable patterns into reusable tools and building blocks that help the team ship faster.

Bonus Points:

• Proficiency in infrastructure management (Docker, Kubernetes, AWS).

• Expertise in encryption, authentication, Linux systems administration, DevOps, or SRE.

• Production experience launching agentic services and forward-deployed AI applications that drive operational value at the customer site.

• Experience as a forward-deployed engineer or tech-led delivery role, embedded with mission customers, scoping problems, sequencing delivery, and shipping novel agentic applications under tight constraints

• Experience with federated or privacy-preserving data architectures (such as differential privacy and secure enclaves).

Benefits:

• Healthcare coverage: 100% employee premium and 50% dependents premium coverage of a platinum-level plan.

• 401K with 2% company match.

• Equity in a seed-stage business.

• Access to 6713 Club — a members-only club in McLean, VA.

• $500 monthly Physical and Mental Health reimbursement program.

• Flexible PTO policy.

• Competitive salary and equity compensation.

• Opportunity to work on impactful projects in the national security sector.

• Career growth and leadership opportunities in a dynamic, innovative environment.