$ whoami

Brandon Callahan

Applied AI Engineer. I design and ship multi-agent systems, RAG, and enterprise integrations that run in production.

$ ./run --pipeline ~/workopen to AI engineering roles
sourcesretrievalagentsevals▶ productionsourcesretrievalagentsevals▶ production

sources/

Code and docs

Every system starts from real enterprise data, like source code turned into docs by a code-intelligence engine.

source-code · docs

select a stage to explore

  1. Code and docs: Every system starts from real enterprise data, like source code turned into docs by a code-intelligence engine.
  2. Vector search over code and docs: The vector database and storage engine at the core of an internal multi-agent RAG platform I designed and built end to end.
  3. Multi-agent systems: Agentic and multi-agent systems, like the internal RAG platform. As Tanium AI Ambassador, I shape high-value AI use cases into production-ready solutions.
  4. Evaluated, traced, logged: RAGAS for evaluation and Langfuse for tracing and logging. The feedback loop that shows what the agents should do better next.
  5. Shipped, not demoed: A vulnerability tool for a large enterprise customer, compliance code for one of Tanium's largest customers, firewall-policy consolidation across 100K Windows endpoints for another, and API migration tooling across the Tanium platform. All running in production.
↓ git log --career

$ git log --career

Experience

From infrastructure, to automation, to AI systems. Open a role for the details.

4 roles · 2012 → now · ● current

2020 → now ● currentTaniumSenior Enterprise Services Engineer (AI Tooling & Integrations)
  1. 9f3c2a1feat(ai)Multi-agent RAG platform, end to end: vector DB, storage engine, code-intel engine
  2. 4be81d7feat(security)Vulnerability tool running in production for a large enterprise customer
  3. c71a09efeat(network)Firewall-policy consolidation across 100K Windows endpoints
  4. 2d5f6b3feat(compliance)Custom compliance code running in production for one of Tanium's largest customers
  5. e08b4c2feat(migration)API-driven migration across 12+ modules, dependency graph spanning the Tanium platform
  6. 7a1d3f8chore(roadmap)Customer tools adopted into the product roadmap · Tanium AI Ambassador
2019 → 2020Apex Tool GroupData Center Architect
  1. 5c9e2b0feat(vcs)Rolled out GitLab as the primary VCS across IT
  2. b3f7a61feat(security)Custom sensors & packages with the security team
2013 → 2019Syntax SystemsInfrastructure Design Engineer · Senior Platform Engineer
  1. 8e4d1c7feat(automation)HANA on Power automation · IBM 2018 Top Strategic Service Provider Excellence Award
  2. 1f6a9d4perf(cost)−20% total cost of ownership: HANA on Power → shared processor pools
  3. d29c5e8feat(automation)Low-level designs auto-generated from multi-source data into ServiceNow
  4. 6b0e3a2feat(ansible)Custom Python modules for Ansible across AIX & Linux
  5. a47f8c1fix(backup)Backup success 89% → 99%: rewrote KSH → Perl → Python
2012 → 2013IBMLinux and Storage Engineer
  1. 3e5b7d9feat(ops)Linux & storage engineering

$ cat stack.json

Stack

{  "ai_llm": ["Claude Code", "Claude API", "multi-agent systems", "RAG", "vector databases", "RAGAS", "Langfuse", "MCP"],  "languages": ["Python", "Go", "JavaScript", "PowerShell", "shell"],  "apis": ["REST", "GraphQL", "ServiceNow", "Tanium platform"],  "infra": ["Docker", "Terraform", "Ansible", "Git", "Jenkins"]}

$ contact --now

Let's build something.

linkedin ↗resume.pdf ↓
[email protected]