~/antonio vallez
Open to new roles · UTC−4

Hi, I'm Antonio.
I build software that ships

Full-stack developer in the public sector, working across TypeScript, Python and the cloud. I like small teams, clear interfaces, and code that's still easy to change a year later.

See my work Get in touch

Case studies

3 projects · newest first

I build internal systems for public agencies, so I can't share code, screenshots or links. These summaries describe the problem, my part, and the result in general terms. I'm happy to go deeper on architecture in an interview.

2025 – 26 Tech lead Team of 5

Permit application modernization

State agency · public-facing service

Problem
Residents applied for permits on paper forms that staff re-typed into a 20-year-old database. Average processing took 6 weeks.
What I did
Designed the online application flow and the API that feeds the legacy database, so the old system could stay in place during the move.
Impact
Processing time fell to 9 days. 70% of applications now arrive online.
C# / .NET React SQL Server Azure
2024 Developer Team of 3

Field inspection mobile app

City department · internal tool

Problem
Inspectors wrote notes on clipboards and entered them at the office the next day, which delayed reports and caused errors.
What I did
Built an offline-first app that saves inspections on the device and syncs when a connection returns, including photos and signatures.
Impact
Reports are filed same-day. Data-entry errors dropped by about 60%.
React Native Python PostgreSQL
2023 Solo Internal

Records request tracker

County office · staff dashboard

Problem
Public records requests were tracked in shared spreadsheets, and legal deadlines were sometimes missed.
What I did
Built a tracker with automatic deadline reminders, role-based access, and an audit log for every change.
Impact
No missed deadlines in the first year. Staff stopped maintaining four separate spreadsheets.
TypeScript Node.js PostgreSQL

Stack

years of daily use

Languages

  • TypeScript 6 yrs
  • Python 5 yrs
  • C# 3 yrs
  • SQL 6 yrs

Frameworks

  • React / Next.js 5 yrs
  • Node.js 6 yrs
  • .NET 3 yrs
  • React Native 2 yrs

Infrastructure

  • Azure 3 yrs
  • Docker 5 yrs
  • PostgreSQL 6 yrs
  • CI/CD 4 yrs

Experience

Paid roles, from newest to oldest.

  1. 7a4e402 HEAD → current Jan 2023 – present New York, NY · Hybrid

    Senior Application Developer · State Department of Services

    Lead a five-person team modernizing public-facing services.

    • Moved permit applications online while keeping the legacy system running
    • Cut p95 API latency by 45% through query and caching work
    • Run weekly code-review sessions for junior engineers
  2. 21d2f2b Jun 2020 – Dec 2022 Remote

    Software Engineer · Brightpath Health

    Built patient scheduling and messaging features used by 12 clinics.

    • Introduced end-to-end testing, catching 30+ regressions before release
    • Owned the on-call rotation and incident write-ups
  3. 915a789 Jul 2019 – May 2020 Brooklyn, NY

    Junior Developer · Studio Cobalt

    Shipped marketing sites and internal tools for agency clients, mostly in React and Node.

  4. 400666a Summer 2018 Internship

    Software Engineering Intern · Metro Transit Data

    Built a dashboard that tracked bus arrival accuracy across 40 routes.

Education

degrees · certifications
 Degree 2015 – 2019

B.S. Computer Science

State University · New York, NY

Minor in Mathematics. GPA 3.7. Focus on distributed systems and databases.

  • Teaching assistant, Data Structures (2 semesters)
  • Senior capstone: real-time campus shuttle tracker
  • Vice president, Computer Science Club
 Certification 2024

Azure Developer Associate

Microsoft

Building, securing and deploying cloud applications on Azure.

 Course 2022

Machine Learning Specialization

Online program · Coursera

Supervised learning, neural networks and recommender systems in Python.

About me

I got into programming by automating a spreadsheet at my first part-time job, and I still enjoy the moment when a tedious task disappears.

These days I care most about developer experience, readable code reviews, and products that respect people's time. I like building tools that make government services simpler for residents and staff, and I'm happiest on small teams where I can work across the whole stack.

Outside of work I contribute to open source, mentor new developers, play guitar badly, and spend too long tuning my editor setup.

locationNew York, NY
timezoneUTC−4
languagesEnglish, Spanish
work styleRemote or hybrid
looking forSenior / Lead roles
editorNeovim

What I value

Clear writing, small pull requests, and shipping something real every week.

Currently learning

Rust, and how to design APIs that are hard to misuse.

Off the keyboard

Long bike rides, cooking for friends, and pickup soccer on weekends.