Software Development Engineer Sde Jobs in Denton, TX

Software Development Engineer – Agentic AI

About Trellix
Trellix is a global company redefining the future of cybersecurity. The company’s comprehensive, open, and native cybersecurity platform helps organizations confronted by today’s most advanced threats gain confidence in the protection and resilience of their operations. Trellix, along with an extensive partner ecosystem, accelerates technology innovation through artificial intelligence, automation, and analytics to empower over 50,000 business and government customers with responsibly architected security. More at https://trellix.com .

Join our innovative team at Trellix, where you’ll lead the design and development of a cutting‑edge generative AI platform powering advanced AI capabilities across the entire Trellix security portfolio. This isn’t prototype work. You’ll be building and operating production agentic systems deployed in federal environments, enabling autonomous SOC workflows, multi‑agent orchestration, and seamless AI integration across our security products. We’re looking for a highly skilled Software Development Engineer with a passion for building robust, scalable, and secure AI solutions that operate at real‑world scale.

This role is hybrid in nature with the Engineer able to commute into the Frico, TX office 3-4 days/week.

Design and Develop: Lead the design and development of our generative AI platform, driving core functionality, agentic workflows, and platform-level features from concept through production.

End-to-End Ownership: Take full ownership of features and functions, from initial design and development through rigorous testing, automation, and ongoing operational health.

Agent Workflow Development: Build, iterate on, and harden multi-agent pipelines, including tool use, inter-agent coordination, and autonomous decision workflows for security operations.

Deliver High-Quality Solutions: Ensure solutions are delivered on time, within budget, and to the highest quality standards, meeting project goals and customer commitments.

Ensure Resilience & Security: Proactively implement best practices to ensure applications are highly resilient, secure, and performant, with particular attention to the sensitivity of security operations data.

Observability & Telemetry: Design and implement instrumentation using OpenTelemetry, contribute to operational dashboards, and surface platform health and usage insights to engineering leadership and stakeholders.

Technical Analysis & Documentation: Analyze feature requirements and produce detailed design documentation, architectural decision records, and async-friendly technical specs.

Production Reliability & Incident Response: Own production issues end-to-end, including triage, root cause analysis, post-mortems, and SLA commitments, for a platform operating in high-stakes environments.

Experience: 5+ years of professional experience in Python application software development, with demonstrated experience building and operating production AI or platform systems.

• Linux proficiency is a must
• Shell scripting (preferred)

• Excellent development and debugging skills in Python
• Strong grasp of data structures and design patterns
• Proficiency with REST and async Web APIs
• CI/CD pipeline experience (GitHub Actions or equivalent)
• Strong written communication for design docs and async collaboration
• Ability to operate with autonomy in a fast-moving, ambiguous environment

• Hands‑on experience with Large Language Models (LLMs) in production
• Langchain experience required, including building and operating stateful multi‑agent workflows
• Experience with prompt orchestration and chain composition
• Familiarity with Agentic AI concepts and patterns (ReACT, chain‑of‑thought, tool use, Deep Agents)
• Experience deploying and operating vLLM for self-hosted inference
• Familiarity with MCP (Model Context Protocol) for agentic tool integration

• FastAPI (preferred)
• Node.js / TypeScript for tooling and API integration layers (preferred)

• Knowledge Graphs, including NebulaGraph or equivalent (preferred)
• Vector Databases, including Qdrant or equivalent (preferred)
• Embedding pipeline experience including chunking strategies and retrieval tuning (preferred)

• Gunicorn or Uvicorn
• OpenTelemetry (OTEL) instrumentation
• Redis (preferred)
• Langfuse or LangSmith for agent observability (preferred)

• Working knowledge of threat detection, EDR telemetry, SOC workflows, or SIEM platforms strongly preferred
• Understanding of Security Incident and Event Management (SIEM) and Incident Response a plus

• Excellent communication and collaboration skills with the ability to work effectively across engineering, product, and security research teams
• Ability to communicate technical decisions and tradeoffs clearly to non-engineering stakeholders
• Strong written communication for design documentation and distributed team collaboration
• Comfortable operating with high autonomy and minimal oversight in a fast-moving, ambiguous environment

We believe that the best solutions are developed by teams who embrace each other's unique experiences, skills, and abilities. We work hard to create a dynamic workforce where we encourage everyone to bring their authentic selves to work every day. We offer a variety of social programs, flexible work hours and family‑friendly benefits to all of our employees.

• Retirement Plans
• Medical, Dental and Vision Coverage
• Paid Time Off
• Support for Community Involvement

We're serious ab out our commitment to a workplace where everyone can thrive and contribute to our industry‑leading products and customer support, which is why we prohibit discrimination and harassment based on race, color, religion, gender, national origin, age, disability, veteran status, marital status, pregnancy, gender expression or identity, sexual orientation or any other legally protected status.