Let's build something

DAN JOHNSON

Full Stack Software Engineer & Architect

Building secure, scalable web platforms for enterprise and mission-driven teams. As a senior engineer at Protegrity and founder of my own development business, I design and deliver high-impact software—from enterprise data platforms to nonprofit web applications.

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About Me

Passionate About Problem-Solving

Creating secure, scalable software that solves meaningful problems.

Dan Johnson

Full Stack Engineer

Engineering in the Real World

I’m a full stack engineer with 7+ years of experience building production-ready systems across enterprise, nonprofit, and government environments. From climate-focused platforms to investment tracking dashboards, I specialize in developing clean, scalable applications using Python, Django, JavaScript, and AWS.

I’ve led development teams, architected full-stack solutions, and delivered software used by analysts, executives, and public users alike. I’ve also worked on classified defense projects in the past, bringing a deep respect for performance, security, and reliability into every project I touch.

7+
Years Experience
15+
Projects Delivered
5+
Team Members Led

Frontend

Javascript, React, Boostrap, HTML, CSS

Backend

Python, Django, REST APIs, PostgreSQL

Cloud

AWS, GCP, Docker, Git, Jenkins

Bonus

WordPress, Wix, SEO optimization, Design

Experience

Built Through Experience

Delivering impactful solutions across enterprise, nonprofit, and government sectors

Senior Software Engineer

Protegrity
Apr 2023 – Present

Leading U.S. development efforts on a global engineering team, delivering secure, scalable web applications that support enterprise data protection and internal operations.

Promoted after delivering consistently impactful features
Sole U.S.-based developer on a distributed global team
Led development of MFA and 7+ key customer facing features

Founder / Full Stack Engineer

Independent Web Dev Business

May 2018 – Present

I run a small dev studio where I build secure, high-performance web apps for startups, nonprofits, and mission-driven orgs. Projects range from AI-powered resume tools to internal dashboards managing $100M+ in VC capital.

Built Global Warming Mitigation Platform for $50K climate prize
Developed private VC dashboard managing $100M+ portfolio
Launched SnowWhatsOpen, DevCV, and nonprofit CRM tools

Full Stack Developer

Enlighted / Siemens
Mar 2022 – Jan 2023

Contributed to enterprise-scale systems within a multi-tier architecture team, gaining experience in collaborative development across large organizations and modern CI/CD pipelines.

Developed REST APIs and internal tools using Django and React
Deployed and maintained customer-facing apps on AWS and GCP
Navigated corporate engineering workflows in a Fortune 500 environment

Full Stack Developer

Infinity Systems Engineering (Space Force)

May 2021 – Mar 2022

Hired to architect, build, and deliver a secure Django-based government platform—led all technical work while mentoring a junior engineer through the 10-month development lifecycle.

Architected secure web apps for internal Space Force operations
Built interactive 3D globe feature for classified satellite visualization
Maintained 80%+ unit test coverage and enforced cybersecurity compliance

Systems Integration Engineer

Aerodyne Industries (Missile Defense Agency)

Jul 2019 – May 2021

Developed simulation software and automation tools for large-scale missile defense exercises supporting national security operations.

Built Python, Java, Bash, and Perl tools for simulation accuracy and analytics
Automated network configs with Cisco DCNM
Supported live training exercises for the DoD
Portfolio

Featured Projects

Showcasing innovative solutions and technical expertise

Local Services

LA & West Hollywood Business Websites

Fixed-scope web packages for local businesses. Fast turnaround, mobile-first design, and Google Business Profile optimization to get you found online.

Fast Turnaround

Most sites live in 5-10 days

Fixed Pricing

Know your cost up front

Local SEO

Show up when customers search

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Writing

Technical Notes From Real Projects

Practical breakdowns of architecture decisions, migrations, and product lessons from the work behind my projects.

Visit the Blog
Latest Post PII Protection Presidio Tokenization

Adding Reversible Tokenization to a Presidio Pipeline with Protegrity AI Developer Edition

How a straightforward PII redaction workflow evolved into a need for reversible, format-preserving protection so AI systems could still route, correlate, and analyze support tickets without exposing the original data.

Read the Article Watch the Video View the Repo
Why It Matters
1 API call

The migrated processor collapsed detection and protection into a single pass.

Reversible output

Protected values still carry structure, consistency, and role-gated recovery.

Zero app rewrite

The swap stayed inside the processor layer because the abstraction was already clean.

Technical Skills

Comprehensive Expertise

Mastery across the entire technology stack

Get In Touch

Let's Build Something Amazing

Ready to discuss your next project? I'm always interested in new opportunities and challenges.

[email protected] LinkedIn GitHub

For local business websites & Google visibility, see Local Web Services →

Based in Los Angeles, CA • Available for cool projects

Response time: Usually within a few hours