Juan Arevalo

1. 2025 → Citibank, Tampa Engineering

   Writing the code and running the sprint

   • Software Developer / Developer Services Analyst, Citibank Feb 2023 – present
   • Writing more of the code, leading AI enablement, and serving as the team's Scrum Master.

   Reach Four teams supported on AI tools, plus the team's sprint cadence

   • Led design and proof-of-concept of an "AI Agent Skills as a Service" application that gives developers a controlled, secure way to call approved AI agent skills. Built the core Document Mode feature, showcased an MVP at the firm's Tech Con, and delivered it to UAT.
   • Named AI Enablement Lead for two technology projects and evaluated three new AI tools, supporting four teams through AI-template submissions and hands-on onboarding.
   • Learned Spring Boot on my own and became the team's most proficient Java developer, building full-stack microservices with Spring Boot backends, Angular frontends and Python services on MongoDB and PostgreSQL.
   • Maintained zero security vulnerabilities in the applications I developed, as validated by SonarQube and Snyk scans.
   • Helped create a coding workshop platform for evaluating and upskilling developers, co-hosting two workshops that onboarded 15+ new hires, and coached three new team members.
   • Helped mainframe teams adopt version control by coordinating communications, running forums to resolve blockers, and onboarding teams to GitHub Enterprise.
   • Built developer-productivity dashboards with live data visualization so senior leadership can track engineering metrics.
   • Became the team's Scrum Master: daily scrums, backlog grooming, retrospectives, and the Jira Kanban board, and helped other teams configure their own boards.
   • Two years after joining, my manager rated my technical skills on par with mid-level developers.

   The most proficient Java programmer on the team.

   Manager, 2025 mid-year review

   ∴Next: owning initiatives from the first problem statement, before the requirements are written.

2. 2024 Citibank, Tampa Engineering

   Owning an initiative

   • Same role, larger scope. I went from supporting rollouts to running one.

   Reach 2,600+ licensed developers

   • Took over GitHub Copilot adoption for 2,600+ licensed users after kickoff and ran it with little oversight. Active use reached 90%, above the 85% target.
   • Answered every developer who reported a Copilot problem within 24 hours, staying with them through chats and calls and pulling in experts when needed.
   • Wrote outreach emails that anticipated common install problems and linked self-service fixes. The department now reuses them as templates.
   • With my team, built and deployed a three-component microservice app with a Python backend and Angular UI, shipped through GitHub Enterprise and the firm's CI/CD tool.
   • Learned Tableau from scratch and published a DORA-metrics dashboard to the development server for tracking team delivery trends.

   The blueprint for future successes.

   Manager, on the Copilot rollout, 2024 annual review

   ∴Fast, patient support is what turns a mandate into real adoption.

3. 2023 Citibank, Tampa Engineering

   Connecting teams to new tools

   • Joined Citibank on the Developer Services team Feb 2023

   Reach 15+ application teams interviewed

   • Joined the team that owned adoption of the firm's new CI/CD deployment tool under a regulatory mandate. Helped build the process to contact, interview and track application teams from scoping to production.
   • Ran 15+ scoping interviews and followed about 10 teams through their pipeline migrations, meeting with delivery managers to clear blockers before deadlines.
   • As a team, we raised production compliance for new apps from 80% to 88.5% and attestation from 67% to 88%, a strong point in the regulator's review.
   • Taught myself Maven and Gradle and built identical Java projects to compare them. Recommended Gradle for new applications.
   • Served as a key coordinator of annual technology conferences, including a firm-wide Tech Con with 20+ teams and 600+ attendees, connecting previously disconnected teams to share solutions.

   Excellent communication skills … a key element in getting our application teams to onboard.

   Manager, 2023 mid-year review

   ∴A network across teams makes every rollout faster.

4. 2021–23 Chambers High School Teaching

   Running a classroom

   • High School Math Teacher, Homestead, FL Aug 2021 – Jan 2023

   Reach Students, parents and school staff

   • Planned and delivered curriculum aligned to state and national standards.
   • Analyzed formal and informal student data and wrote reports on instruction and achievement.
   • Chose research-based materials and practices, and kept students, parents and staff informed throughout the year.

   ∴Clear plans and steady communication keep a large group moving together.

5. 2017–20 University of Florida Teaching

   Teaching code for the first time

   • BS, Mathematics, University of Florida 2017 – 2020
   • Teaching Assistant, intro C programming, Herbert Wertheim College of Engineering Fall 2019
   • Student Tech Assistant, Office of Academic Advising Aug 2019 – May 2020

   Reach A lecture of 40 students

   • Helped write 3 exams for an introductory C course. Average scores rose 10% over the prior term.
   • Held office hours for individuals and groups of 2–7, graded projects and exams, and taught one lecture to 40 students when the professor was out.
   • Troubleshot hardware and software for advising staff, wrote guides for the conference-room technology, and kept the equipment inventory.

   ∴Explaining code to beginners made the fundamentals stick.

6. 2015–17 Miami Dade College Teaching

   Explaining math to other students

   • Mentor and Tutor, Math and Physics, SIS-STEM Grant Aug 2015 – Jul 2017
   • Student Mentor, TRIO Student Support Services 2016
   • Co-Founder and President, Mu Alpha Theta math honor society Apr – Jun 2016

   Reach Weekly study groups of 5–10 students

   • Tutored every level of math and physics offered on campus and ran weekly study groups, coordinating content with professors.
   • Coached students on study skills and problem solving. Passing rates in tutored courses rose by about 30%.
   • Mentored two students one-on-one every other week on academics and college life.
   • Co-founded the campus chapter of Mu Alpha Theta, recruited members, and organized applied-math activities.
   • Earned Academic Excellence Awards in Mathematics (2016) and Physics with Calculus (2017), then finished an AA in Mathematics.

   ∴Hard ideas land when they're broken into steps someone else can follow.

Several firm-wide Applause awardsOne of the most recognized members of my team at Citibank.

Languages

• Java
• Python
• TypeScript
• JavaScript
• C
• C++

Frameworks

• Spring Boot
• Angular
• Vite

Data

• MongoDB
• PostgreSQL
• Tableau

Delivery and quality

• Git
• GitHub Enterprise
• CI/CD pipelines
• Maven
• Gradle
• SonarQube
• Snyk
• Docker
• Docker Compose
• OpenShift

Infrastructure and DevOps

• Proxmox
• Ansible
• Komodo
• Container registries
• Linux Debian/Ubuntu
• TrueNAS / ZFS
• Caddy
• Tailscale
• Cloudflare
• DigitalOcean
• OPNsense
• VLAN segmentation
• Pi-hole / DNS
• TLS

AI-assisted development

• GitHub Copilot uses it to build, led rollout
• AI enablement and agent tooling

Ways of working

• Agile / Scrum Scrum Master
• Jira
• Confluence
• Mentoring
• Technical interviewing
• Developer productivity dashboards

Spoken languages

• English
• Spanish fluent