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Dvd Crz

@dvdcrz

Lead Engineer at The Nullity building cloud-native APIs, microservices, and Ethereum smart contracts.

United States
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At The Nullity, I build and maintain backend services with Laravel and Django, and integrate AWS Lambda to power APIs and background processing. I also develop modular microservices with Flask, Node.js, RabbitMQ, Redis, and PostgreSQL.

At Inseego Corp., I maintained and extended an enterprise backend built with Symfony, Doctrine, and MariaDB. I also built a local-only engineering assistant with Python, PowerShell, and Ollama to support ticket grooming and codebase analysis without exposing company code to cloud models.

Across my work, I’ve developed APIs and applications, automated infrastructure and delivery workflows, and created Roku and AppleTV channels. My experience spans backend and full-stack development, cloud infrastructure, system administration, and smart contract development.

Experience

Work history, roles, and key accomplishments

The Nullity logoTN
Current

Lead Engineer

Jun 2018 - Present (8 years 4 months)

• Built and maintained backend services using Laravel and Python Django to power dynamic, cloud-native applications.
• Integrated AWS Lambda serverless functions to create scalable APIs and background processing pipelines.
• Architected modular microservices with Flask, Node.js, RabbitMQ, Redis, and PostgreSQL for internal tooling and public APIs.
• Developed and deployed Ethereum smart contracts

Inseego Corp logoIC

Senior Backend Engineer

Dec 2025 - Sep 2026 (9 months)

Maintain and extend a large enterprise backend application built with Symfony 6.4, Doctrine, MariaDB, and domain-oriented modules.
Deliver production fixes and enhancements through GitLab merge requests, automated CI pipelines, peer review, QA validation, and sprint-based delivery.
Analyze complex SQL and legacy workflows, isolate regression risk, and implement focused changes that preserve existi

InfraShield logoIN

Senior Software Development Engineer

Jul 2024 - Aug 2025 (1 year 1 month)

• Developed and maintained Dockerized Laravel 11.45 and Django applications for cybersecurity asset tracking and admin tools.
• Built APIs and interfaces using PHP 8.3, Vue 3, and Python Django in compliance-heavy environments.
• Automated asset/CDAs audit data collection using Bash and Bat scripting across distributed endpoints.
• Led daily standups, mentored junior developers, and improved test

SysLogis Teks logoST

Senior Software Engineer

Nov 2022 - Nov 2023 (1 year)

● MSP-like support large account.
● Providing software development & DevOps support for developers.
● CI/CD via Hudson & Jenkins, transitioning to AWS CodeDeploy.
● Docker compose creation for various projects for other developers.
● Mercurial & Git management.
● Development in Python, JS, PHP, Symfony, AngularJS, Lambda AWS for
legal service platform
●REST-based APIs & e-commerce platforms.

Fullbay logoFU

Full Stack Engineer

Aug 2022 - Nov 2022 (3 months)

● Worked on primarily PHP, BS5, Laravel application w/Vue for trucking logistics & service shops.
● Github & JIRA workflow.
● Vue.js
● Quickbooks API integration
● Javascript, Jquery
● Python w/AWS Lambda.
● Team of about 50 devs, Q&A & product collaboration

Berkshire Hathaway HomeServices EWM Realty logoBR

Senior System Engineer

Aug 2013 - Dec 2021 (8 years 4 months)

• Have worked in several system administration procedures & integration projects.
• Continued development in a LEMP stack & micro services.
• Created Laravel project for agent portal with PHP/oAuth Azure AD integration.
• PHPUnit testing & deployment CI/CD
• Azure Powershell runbooks for data automation.
• REST APIs
• Cron jobs & Laravel Queues for automation
• Chrome extension creation for vendor

Worldnet Media logoWM

Full Stack Engineer

Sep 2011 - Jul 2013 (1 year 10 months)

OOD PHP development, MySQL, javascript, maintenance & server side configuration for several high volume adult properties. Changes involved development optimized for mobile traffic, improved SEO rankings, & a faster web application performance. Also created administrator tools for the properties, allowing for things such as CDN flushing & moderation. Have written scripts in both Python & PHP for ta

DL

Senior Lead Developer

Decipher Labs

Nov 2010 - Apr 2011 (5 months)

Have worked in several system administration procedures & integration projects. Continued development in a LEMP stack & micro services. Patch management software deployment via Kaseya, JAMF & SCCM. Chrome extension creation for vendor integration. API services. Asset management & policies via Azure. Networking & firewall administration via Cisco Meraki systems, Catalyst, & pfSense. Linode & VMWare

Education

Degrees, certifications, and relevant coursework

PD

Python Developer

[PCEP-30-02] PCEP™ – Certified Entry-Level Python Programmer

Jun 2024

CI

Cisco

Cisco Certified Network Associate Routing and Switching (CCNA)

Jul 2018 · Expired Jul 2020

CI

Cisco

Certified Meraki Network Operator

Jul 2017

FU

Florida International University

Computer Science

2005 - 2007

AU

American InterContinental University

Bachelor's degree, Computer Science

2006 - 2007

MC

Miami Dade College

Associate's degree, Computer Science

2003 - 2005

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