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Matheus Calma

@matheuscalma

Enterprise applications engineer at 5.15 Technologies / Critical Design Associates who migrated a bank’s Atlassian platforms to Cloud.

United States
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At 5.15 Technologies / Critical Design Associates, I owned a regional U.S. bank’s Atlassian suite across Cloud and Data Center, supporting Jira, Jira Service Management, Confluence, and Bitbucket for 1,500 users. I managed platform standards, integrations, Marketplace app governance, and escalations.

I retired the bank’s self-hosted Data Center estate through a Jira and Confluence migration to Cloud, completing the cutover over a weekend with zero downtime. I also replaced manual access grants with a self-service Jira Service Management pipeline, taking grant time from days to minutes and eliminating standing admin permissions.

For the bank, I administered GitHub Enterprise Cloud and Copilot for 500 developers, and designed per-organization model access controls using Entra ID group sync. I also built a Python forensic audit tool that mapped unauthorized grants into an access timeline used for remediation.

For a Global Fortune 500 Manufacturer, I connected three Jira Cloud sites with Ivanti Service Manager and later ServiceNow, implemented a Jira-based SOX audit workflow, and built a findings-import tool. Earlier, at Pioneer Technology Group, I automated the company’s manual UI testing suite.

Experience

Work history, roles, and key accomplishments

TA

Senior IT Automation Consultant

5.15 Technologies / Critical Design Associates

Jan 2020 - Sep 2026 (6 years 8 months)

Owned the Atlassian suite for a regional U.S. bank, including Jira, JSM, Confluence, and Bitbucket for 1,500 users, and led migrations to Cloud and GitHub. Also integrated Jira with ITSM platforms for a global manufacturer and implemented SOX audit workflows.

PG

QA Automation Engineer

Pioneer Technology Group

Oct 2017 - Apr 2019 (1 year 6 months)

Automated the company's entire manual UI testing suite.

Education

Degrees, certifications, and relevant coursework

Atlassian logoAT

Atlassian

Atlassian Certified Administration Expert, Administration

Earned the Atlassian Certified Administration Expert certification in 2025.

GitLab logoGI

GitLab

GitLab Verified Solutions Architect & Migration Services Engineer, Solutions Architecture

Earned the GitLab Verified Solutions Architect & Migration Services Engineer certification in 2022.

CompTIA logoCO

CompTIA

CompTIA Security+, Security

Earned the CompTIA Security+ certification in 2019, which remains active.

University of Central Florida logoUF

University of Central Florida

Bachelor of Science, Computer Science

Bachelor of Science in Computer Science from the University of Central Florida, completed in 2018.

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