Affinity

4460 AI & LLM Engineer

Affinity • $120K — $150K *
Reston, VA 20191In-Person
Aerospace & Defense
8 - 10 years of experience
Today
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Job Overview by Ladders

Qualifications

  • Bachelor's degree with 8 years of relevant experience.
  • Active certifications for IAT Level II and Cyber Security Service Provider Infrastructure Support required.
  • Certifications like CompTIA CySA+, EC-Council CND, GICSP, and (ISC)2 SCCP accepted as qualifying.
  • Experience with multi-agent orchestration tools and production-grade RAG pipelines is a must.
  • Deep understanding of OWASP Top 10 for LLMs and prompt injection defense essential.
  • Experience in managing token optimization and API throttling.

Responsibilities

  • Design and deploy robust multi-agent orchestration frameworks and Retrieval-Augmented Generation (RAG) pipelines.
  • Develop and maintain input/output guardrails against prompt injection and adversarial attacks.
  • Conduct continuous red teaming and simulations to identify vulnerabilities and weaknesses.
  • Manage token usage to reduce latency and engineer efficient API rate limiting strategies.
  • Write clean, secure, production-grade code for integrating models into enterprise applications.

Benefits

  • Opportunity to work at the forefront of AI and cybersecurity.
  • Engage with cutting-edge technologies like generative AI and multi-agent systems.
  • Be part of a team focusing on advanced security practices in AI development.
  • Contribute to creating resilient AI infrastructures against emerging threats.
  • Access to professional development and advanced training in AI and cybersecurity.
Full Job Description
4460 AI & LLM Engineer
4460 | Top Secret

Job Description:

OVERVIEW:

The AI Security & LLM Engineer will design, secure, and optimize our next-generation generative AI infrastructure. In this role, you will bridge the gap between advanced AI capabilities and rigorous cybersecurity practices. You will build resilient multi-agent systems while actively defending against emerging vulnerabilities like prompt injection, data exfiltration, and model manipulation.

GENERAL DUTIES:

  • System Architecture: Design and deploy robust multi-agent orchestration frameworks and Retrieval-Augmented Generation (RAG) pipelines.
  • Adversarial Defense: Develop, implement, and maintain advanced input/output guardrails to neutralize prompt injection and adversarial attacks.
  • Red Teaming: Conduct continuous LLM red teaming and simulations to identify system vulnerabilities and structural weaknesses.
  • Performance Optimization: Manage token usage, reduce latency, and engineer efficient API rate limit management strategies.
  • Secure Development: Write clean, secure, and production-grade code to integrate frontier models into enterprise applications.
  • Primary Languages & Technical Stack: Rust or Python (at least one required)


REQUIRED QUALIFICATIONS:

  • Bachelor's degree and 8 years of experience related to specific functional areas.
  • Active certifications for both IAT Level II (e.g. CompTIA Security+) and Cyber Security Service Provider (CSSP) Infrastructure Support (e.g. CompTIA Cloud+) by program onboarding date.
  • The following individual certifications cover both certification requirements for this program: CompTIA Cybersecurity Analyst, CySA+; EC-Council Certified Network Defender (CND); GlAC Global Industrial Cyber Security Professional, GICSP; (ISC)2 System Security Certified Practitioner (SCCP).
  • AI Architecture: Proven experience with multi-agent orchestration tools and production-grade RAG pipelines.
  • AI Security: Deep understanding of OWASP Top 10 for LLMs, prompt injection defense, and guardrail frameworks.
  • Infrastructure Management: Experience handling token optimization, context window constraints, and API throttling.


DESIRED QUALIFICATIONS:

  • Frontier Model Expertise: Hands-on experience deploying commercial frontier models (e.g., ChatGPT, Grok, Claude).
  • AI Developer Tools: Experience utilizing advanced AI-assisted development workflows such as Claude Code or Codex.
  • Security Testing: Background in traditional penetration testing, vulnerability assessment, or cryptographic concepts.


CLEARANCE:

  • Active minimum Top Secret clearance required


Job Details

City : Reston

State : Virginia

About Affinity

Affinity’s patented technology structures and analyzes millions of data points across emails, calendars, and third-party sources to offer users the tools they need to automatically manage their most valuable relationships, prioritize important connections, and discover untapped opportunities. Affinity uses artificial intelligence to analyze relationship strength and illuminate the best paths to warm introductions. The platform also offers a holistic view of users’ networks in a centralized, automatically updated database without any manual upkeep. Founded in 2014, Affinity is headquartered in San Francisco, California. Affinity has raised $120M to date and is backed by leading investors including Menlo Ventures, Advance Venture Partners, 8VC and MassMutual Ventures. It has over 2,700 customers in 70 countries, including venture capital firms such as Bain Capital Ventures and Kleiner Perkins, private equity firms such as SoftBank Group, investment bankers such as Woodside Capital Partners, financial services firms such as Fidelity Investments, real estate companies such as Tishman Speyer, insurers such as American Family Insurance and enterprises such as Nike, Qualcomm and Twilio. Affinity has been named in Fortune Magazine's Best Workplaces, Inc. Magazine's Best Workplaces and editor's number one pick, the Data Breakthrough Award, BIG Innovation Award and others.
Learn more about Affinity
Size
1,000 employees
Industry
Enterprise Technology
Founded
2014
* Ladders Estimates

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