Mark Coleman

Workday integration consultant building AI-powered workflow tools

I've spent 5+ years implementing enterprise software — the last three leading Workday integration projects at a global consultancy, connecting HR and finance systems that companies run their business on. Now I'm applying that delivery discipline to LLM-based systems: agents, retrieval pipelines, and automation that hold up outside a demo.

Selected delivery

As integrations lead I own the full lifecycle — requirements, solution architecture where standard templates don't fit, vendor coordination, migrations, and go-live — acting as the connective tissue across workstreams that turns business requirements into integration design.

$66B public teachers' retirement systemGovernment

Led the integrations workstream — designed and built the integrations tracking member retirement contributions and remitting pay actuals to the county payroll system. The firm's first public-sector engagement, opening the door to further government implementations.

Fortune 500 gas & electric utility~7,700 employees · 6 states

Led integrations for a time-tracking implementation — connecting Salesforce time entry into Workday and reporting time and project data downstream to PeopleSoft.

Global professional-staffing firmIn flight

Leading integration delivery — designed the inbound integrations bringing new-hire and time/project data from PeopleSoft into Workday, handing off the build to the client's MuleSoft team.

Global governance-software companyIn flight · ~2,400 employees · 10 countries

Leading integration delivery on a first global implementation. Hands-on with the client's business-technology and security teams connecting Boomi, ConductorOne, and Jira Service Management to Workday, with benefits and global payroll integrations in scope.

Building now

Integration Knowledge CopilotIn progress

A retrieval-augmented assistant for Workday integration questions — hybrid vector + keyword search over a curated corpus, grounded answers with citations, and an eval suite measuring retrieval hit rate and answer faithfulness.

  • RAG
  • Claude API
  • pgvector
  • Next.js
  • evals

Permit Prep AgentIn progress

An LLM agent that turns unstructured contractor job requests into ready-to-submit permit packets — multi-step tool use over live jurisdiction data and Airtable, with a human approving every submission.

  • Claude Agent SDK
  • MCP
  • tool use
  • prompt design

Momentum Trading SystemPaper trading

A risk-gated automated trading system: deterministic strategy engine, hard position-sizing limits, kill switch, and a full JSONL audit trail of every decision. 50+ tests on the risk and execution paths.

  • Python
  • Alpaca API
  • risk management
  • testing

Full case studies — with outcomes, architecture notes, and demos — are coming as these ship.

Tools

XSLT workbench

A browser-based XSLT 3.0 editor with live output — plus a Claude agent that writes the stylesheet in front of you, runs every draft, reads the compiler errors, and fixes them. Bring your own API key; XML never leaves the browser except to Anthropic when you ask.

  • XSLT 3.0 / Saxon-JS
  • agentic tool use
  • client-side only

Workday audit-log template generator

Upload a sample CSV audit log and get back a self-contained HTML report template with substitution tokens matched to your columns — drop it into a Workday Orchestrate flow and every run produces a filterable, searchable audit report.

  • Workday Orchestrate
  • client-side only
  • zero dependencies

Toolset