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Matt Creenan

Experienced Software Builder

20+ years of experience across full-stack development, DevOps, and data engineering. A top-performing individual contributor who leads complex projects and sets technical direction across technologies, methodologies, and architectures.

2022 — Present

Senior Staff Engineer

Torch

  • Designed and shipped a company-wide AI Slack agent that answers employee questions grounded in our help content, live operational data, and codebases — our sources of truth — with guardrails for safe, accurate responses.
  • Built in-product LLM features — a coaching chat assistant, summarization, and light RAG over our content.
  • Built AI-native development workflows — authoring custom agents, skills, and routines for support triage, QA testing, and a daily engineering brief.
  • Led the team between engineering managers, providing technical direction and continuity through the transition.
  • Built internal developer tools that streamline common tedious tasks.
  • Led the greenfield rebuild of the frontend platform — new design system, monorepo, modern tooling — and migrated the coaching and participant experiences onto it.
  • Overhauled the local development setup with automated provisioning so every system component can run end-to-end on a single machine.
2019 — 2022

Engineering Manager, Data

Delaware North

Managed 4 senior engineers across the data platform, integrations, and new solutions, stabilizing the legacy platform through the post-COVID transition to keep critical reporting flows live.

2014 — 2019

Senior SOA Engineer, Senior Data Engineer

Delaware North

Built a data platform from scratch for a critical BI project (99.9%+ API uptime through 2022), developed ETL processes including a custom serverless pipeline framework, and delivered multiple stand-alone solutions for business projects.

2013 — 2014

Senior Programmer

LocalNet / CoreComm / Exhibio LLC

Drove a stalled multi-tier web application to launch, built a new ISP billing system from scratch, and deployed a Haraka (Node.js) SMTP server with custom plugins integrating internal systems.

2006 — 2012

Vendor Integrations Engineer, Lead Engineer

Synacor — Williamsville, NY

Led design and development of a greenfield platform for internal and external tooling, drove the team's adoption of agile practices as Scrum Master, and mentored junior developers while introducing new technologies like Riak and Solr.

Languages
TypeScript, Python, Ruby, JavaScript, Java, Perl, PHP
AI / LLM
LLM APIs & guardrails, RAG / embeddings, agentic coding (Claude Code, Codex, Cursor; custom agent plugins: skills, sub-agents)
Cloud / AWS
API Gateway, Athena, Bedrock, CloudFormation, CodeArtifact, Data Pipelines, DocumentDB, EC2, ECS, EKS, Elastic Beanstalk, Glue, Lambda, RDS, Rekognition, Route 53, S3, SNS, SQS, Secrets Manager, Step Functions
Databases
MySQL, PostgreSQL, DynamoDB, MongoDB, Redis
Provisioning
Ansible, Puppet, Terraform, CDK