Principal Engineer, Duo Agent Platform - Remote

GitLab; United States; Remote; USD 250,000 - 325,000; Full time

Benefits offered by this job

Flexible Paid Time Off

Equity Compensation & Employee Stock P

Growth and Development Fund

Parental Leave

Job summary

GitLab is seeking a Principal Engineer to help build the Duo Agent Platform, an agentic orchestration layer across the software lifecycle. You will set technical direction, lead multi-team initiatives, and own critical architectural decisions while delivering reliable, secure AI-enabled workflows.

The role requires 8+ years in software engineering with leadership experience, strong distributed systems skills, and hands-on work with large language models.

Qualifications

• 8+ years of software engineering experience, including 3+ years at Staff, Principal level or equivalent senior technical leadership.
• Hands-on production experience building on large language models: agent loops, tool calling, context management, retrieval, prompt and model evaluation.
• Strong background in distributed systems, including service decomposition, fault tolerance, observability, and operational resilience under multi-tenant load.
• A track record of defining evaluation frameworks and using benchmark and experiment results to make architecture decisions.
• Experience designing human-in-the-loop controls, safety guardrails, and responsible AI practices.
• Ability to drive alignment across Engineering, Product, Infrastructure, and Security on problems that start out ambiguous.
• Experience mentoring senior engineers and shaping technical direction across multiple teams.
• Comfort with Ruby, Go, Python, or TypeScript, and willingness to work across the stack.

Responsibilities

• Define the technical direction for a significant area of Duo Agent Platform across several teams, and partner with Engineering Managers and Product to turn it into a roadmap with a six-month horizon.
• Build the orchestration layer that makes agents and flows reliable: session lifecycle, tool invocation, context assembly, concurrency, retries, timeouts, and failure modes that degrade gracefully.
• Hands on work on driving topics throughout the organization from POC to architecture to full implementation.
• Participate in Incident Management on-call rotation to help meet availability goals.
• Write clear, opinionated design documents, architecture narratives, and decision records to align teams.
• Mentor Staff and Senior Engineers and raise the bar for experimentation rigor and cross-team collaboration.
• Work across the platform on different projects and teams across design, data, and governance.

Skills

Ruby

Go

Python

TypeScript

AI/LLM experience

Distributed systems

Mentoring engineers

Written communication

Remote collaboration

Security/compliance

Technical leadership

Job description

GitLab is seeking a Principal Engineer to help build the Duo Agent Platform, an agentic orchestration layer across the software lifecycle. You will set technical direction, lead multi-team initiatives, and own critical architectural decisions while delivering reliable, secure AI-enabled workflows.

The role requires 8+ years in software engineering with leadership experience, strong distributed systems skills, and hands-on work with large language models.