---
title: 'AI/ML Engineer-TS/SCI  & CI POLY at SixGen, Inc.'
canonical: 'https://feeny.ai/job/ai-ml-engineer-ts-sci-ci-poly-sixgen-inc-columbia-m9vd24ettw6x'
type: 'job'
last_seen: '2026-10-26'
---

# AI/ML Engineer-TS/SCI  & CI POLY at SixGen, Inc.

- **Company:** SixGen, Inc.
- **Location:** Columbia, MD
- **Posted:** 2026-10-08
- **Last confirmed live:** 2026-10-26
- **Apply:** https://job-boards.greenhouse.io/sixgeninc/jobs/5447622008

## Job description

SIXGEN’s mission is to deliver agile, mission-ready cybersecurity solutions that empower government and critical infrastructure organizations to stay ahead of advanced cyber threats. We combine innovation, deep expertise, and cutting-edge capabilities to uncover vulnerabilities, protect vital systems, and ensure operational superiority in an ever-evolving digital landscape.

## POSITION OVERVIEW

- Position: AI/ML Engineer
- Job Type: Full Time
- Location: Columbia, MD
- Clearance Requirement: TS/SCI, CI Poly
- Salary : Senior $215, SME $240K

## WHAT YOU’LL DO

SIXGEN is actively seeking candidates to be part of a team that supports the United States Cyber Command (USCC). Our team is standing up USCYBERCOM’s AI Enterprise capability — the central hub that mission teams turn to when they want to move an AI solution from prototype to a secure, governed, enterprise-scale service. As a AI/ML Engineer on this team, you will design and integrate the models, agents, and AI workflows that run on that platform, with significant, visible impact on the mission of the USCC.

What You'll Be Doing:

- Provide embedded operations support, capability integration, and rapid prototyping for AI/ML-enabled tools in support of our customer.
- Design and integrate LLM/agent orchestration workflows using agentic frameworks such as LangGraph, Agno, and the NVIDIA NeMo Agent Toolkit.
- Tune model gateway routing logic to select, evaluate, and optimize across multiple frontier and open-weight models for cost, performance, and mission fit.
- Develop and integrate RAG pipelines, vector databases, and memory services to give agents access to mission knowledge and context.
- Implement MCP (Model Context Protocol)-based tool-broker integrations so agents can safely and securely access enterprise tools and data.
- Evaluate, benchmark, and tune models and agent behaviors; build automated evaluation pipelines to track quality, safety, and performance over time.
- Partner with data scientists and mission analysts to translate research and prototypes into production-grade AI capabilities for the command.
- Implement AI governance guardrails — content/safety filters, policy enforcement, and approval gates — for agentic workflows, and document model/agent architectures and evaluation results for reuse.
- Research and evaluate emerging LLM, agent, and AI tooling to keep the command's AI capability current and adaptable.

## Requirements

- Bachelor’s degree from an accredited college or university in Computer Science, Data Science, or a related discipline and 10+ years of experience; 4 additional years of experience may be considered in lieu of degree
- Active TS/SCI clearance w/Poly
- Advanced proficiency in Python for AI/ML application development
- Demonstrated experience building or integrating LLM/agent-based systems in production
- Experience with retrieval-augmented generation (RAG), vector databases, and prompt/context engineering
- Ability to manage competing priorities in fast-paced mission environments and identify/escalate operational risks early

Preference to Candidates that Have:

- Master's degree and 8+ years of relevant experience
- Experience supporting USCYBERCOM, NSA, DoD cyber operations, or related mission environments
- Experience with frameworks such as LangGraph, Agno, or the NVIDIA NeMo Agent Toolkit
- Experience with model inference/serving platforms (NVIDIA NIM, vLLM, Ollama, LiteLLM)
- Experience with MCP (Model Context Protocol) or similar tool-broker/integration standards
- Experience with AI evaluation frameworks, model benchmarking, and observability (logs/metrics/traces) for AI workloads
- Experience supporting USCYBERCOM, NSA, or DoD AI/cyber mission environments

## COMPENSATION & BENEFITS

At SIXGEN, we are committed to fair and equitable compensation practices. Compensation for this role will be based on experience, qualifications, technical expertise, and overall alignment with the position.

Additionally, SIXGEN offers top-tier benefits for full-time employees, including:

- Employer-paid health insurance premiums (medical, dental, vision) for you and your family
- Employer-paid short/long term disability insurance and basic life/AD&D insurance
- 401K with a 4% employer contribution
- Professional development reimbursement options available (training, certification, education, etc)​
- Flexible and remote work policies for most positions
- Flexible PTO and holiday schedule

## OUR COMMITMENT

SIXGEN is an Equal Opportunity Employer. We ensure that all applicants are considered for employment without regard to race, color, religion, sexual orientation, gender identity, national origin, disability, age, marital status, ancestry, projected veteran status, or any other protected group or class.

We are committed to fostering an inclusive culture that values diversity in our people, reflecting the communities we serve and our customer base. We strive to attract and retain a diverse talent pool and create an environment where everyone is empowered to be their authentic selves at work.

## About SixGen, Inc.

## Company Overview
- **One-liner**: SIXGEN is a cybersecurity company that provides mission-aligned cyber capabilities, tools, and operations to protect government, defense, and critical infrastructure organizations from global adversaries.
- **Entity Type**: Private (acquired by Washington Harbour Partners in November 2023)
- **Headquarters**: Annapolis, Maryland, United States
- **Founded**: 2014
- **Founders**: Ethan Dietrich

## Core Business
- **Primary industry/industries**: Cybersecurity, Defense & Aerospace, Critical Infrastructure Protection
- **Target customers**: Government agencies (U.S. and allied), Defense & Aerospace contractors, Energy & Utilities, Telecommunications, Commercial Enterprises, and other Critical Infrastructure sectors (B2B, B2G)
- **Mission or purpose statement**: To reveal threats, secure operations, and empower missions. They provide the tools, automation, insights, and tradecraft needed to adapt and operate in constantly shifting threat environments with a focus on the purposeful integration of machine speed and human expertise. [sixgen.io](https://www.sixgen.io/)

## Products & Services
- **Cyber Operations Services**: Highly skilled operators conduct research, assessments, and red team operations based on real-world threats, emulating global adversaries to report detailed and actionable findings on critical assets and infrastructures.
- **Applied Research, Reverse Engineering, & RF Development**: Services that involve deep technical analysis and tool development to uncover vulnerabilities and solve complex cyber challenges.
- **Cyber Training**: Train operators to execute across the full spectrum of cyber operations.
- **Automation, AI & Data Science**: Building tools that integrate machine speed with human expertise for threat detection, data security, and scalable growth-oriented solutions.
- **Infrastructure Security**: Services focused on IT/OT visibility, proactive mitigation, automated compliance, and unified visibility for legacy and modern systems.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (acquired, so no public market cap)
- **Key Metric**: Annual Revenue of **$15.3 million** | Total Funding: **$500,000** (Seed round in 2017)
- **Notable Investors/Partners**: Parent company is **Washington Harbour Partners LP** (acquired in Nov 2023). Previously acquired **Fourcast Management and Analysis** (July 2022). Board member includes **Stu Shea**.
- **Growth Signals**: 
  - Year-over-year headcount growth of **+11.7%** (currently approximately 80 employees).
  - Active job postings have increased **+87.5% year-over-year**.
  - Expanded into the United Kingdom.
  - Secured by a private equity backer, providing capital for further expansion.

## Competitive Advantages
- **Deep Government & Defense Ties**: A large portion of their workforce comes from elite government and military backgrounds (NSA, US Air Force, US Army, US Marine Corps).
- **Mission-Focused Approach**: They position themselves as a “non-traditional defense contractor” that combines innovation with deep expertise rather than bureaucratic processes.
- **Proven Track Record of Acquisitions**: The acquisition of Fourcast Management and Analysis shows their ability to integrate new capabilities and grow through M&A.
- **Full-Spectrum Cyber Operations**: They cover the entire range from offensive cyber (CNO, CNE, Red Teaming) to defensive and intelligence operations.

## Strategic Focus
- **Post-Acquisition Growth**: Under Washington Harbour Partners, the company is aggressively hiring (87.5% more job postings year-over-year) and expanding its market reach.
- **Space & Emerging Domains**: Actively hiring for roles like "Senior Intelligence & Cyber Analyst – Space Systems," indicating a push into securing space-based infrastructure.
- **Purposeful AI Integration**: Focused on integrating AI and data science not for its own sake, but to solve specific operational challenges in threat detection and automation.
- **Industry Diversification**: While rooted in defense, they are growing their commercial offerings in energy, utilities, and telecommunications.

## Why Work Here
- **Meaningful Mission**: Employees work on “missions that matter” involving national security and critical infrastructure protection against real-world adversaries.
- **Comprehensive Benefits**: 
  - **Health**: 100% paid health, dental, and vision premiums for employees and family. HRA funds up to $3,000. Coverage starts on day one.
  - **Financial**: 4% direct employer 401(k) contribution regardless of employee participation. Short/long-term disability and basic life/AD&D insurance (3x salary up to $300k).
  - **Time Off**: Flexible time off and paid holidays. Flex time allows for work-life balance across pay periods.
  - **Leave**: Parental leave, jury duty, military leave, and voting leave.
- **Professional Development**: Support for training, certifications, and conferences (DEF CON, IITSEC, etc.).
- **Culture**: Described as valuing innovation, integrity, and purpose. High percentage of technical staff (38%).
- **Work Model**: Mix of on-site (Fort Meade, Annapolis, Reston, Sterling, Huntsville, Columbia), hybrid (DMV Area), and some remote roles.
- **Compensation**: Competitive salaries; example ranges from LinkedIn data: Software Engineer ~$121,945/year, Offensive Cyber Operator ~$92,363/year.

## Sources
1. [sixgen.io](https://www.sixgen.io/)
2. [Greenhouse Jobs at SixGen, Inc.](http://job-boards.greenhouse.io/sixgeninc)
3. [SIXGEN Careers Page](https://www.sixgen.io/careers)
4. [LinkedIn Company Page - SIXGEN](https://www.linkedin.com/company/sixgenio)
5. [Tracxn Company Profile - SIXGEN](https://tracxn.com/d/companies/sixgen/__A6y0Vd77YhuDDhLrOmjxwRZ5q2qK4dqrOLR876uKVQk)

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