John Jensen

John Jensen

Senior Full-Stack Engineer

Seattle, Washington, United States

john@johnjensen.dev

LinkedIn

Entrepreneurial full-stack engineer proficient in Ruby on Rails, JavaScript, integrating RESTful APIs, and Linux deployments; co-founded multiple ventures, migrating many sites for speed gains and engineering tools like real-time locators and analytics dashboards. Proven in driving user growth, SEO, and regulatory adherence while fostering community engagement.

Skills

Languages & Frameworks

  • Ruby on Rails
  • JavaScript
  • HTML/CSS
  • Tailwind / Bootstrap
  • Astro / Gatsby.js
  • WordPress
  • Shopify (Liquid Templating)
  • Ghost CMS

Backend & Data

  • RESTful APIs
  • Authentication
  • Database Management (PostgreSQL, SQLite)
  • MVC
  • ActiveRecord ORM

DevOps & Tools

  • Deployments (AWS, Digital Ocean, Heroku, Linode)
  • Docker
  • Git
  • Linux Servers
  • Performance Optimization (Monitoring & Tuning)
  • Google Analytics

Methodologies

  • Agile Workflows
  • Code Reviews
  • Testing
  • SEO
  • AI-Augmented Development (GPT, Claude, Grok for Agentic Coding and Prototyping)

Soft Skills

  • Project Management
  • Team Leadership
  • Sales (B2B Pipelines)
  • Precision Optimization: Iterative Enhancements in Fast-Paced Environments

Experience

Founder | Cybinly.com

Seattle, Wa | October 2023 - Present

  • Developed Ruby on Rails platform to address untapped psychedelic space akin to Leafly or WeedMaps; built data-driven MVP from ideation to deployment, fostering informed wellness journeys for emerging users.
  • Engineered 3 interactive features including Dosage Calculator, Printable Experience Checklist, and real-time store locator API; enhanced user safety and accessibility through informed decision-making.
  • Authored guides on psychedelic science, safety, and legality; promoted evidence-based practices to build community.

Technical Executive Assistant | Steam Seattle & Blue Magic

Seattle, Wa | December 2020 - September 2023

  • Supported technical operations for auto detailing and manufacturing businesses.
  • Migrated website from WordPress to Gatsby.js; enhanced speed by 75% and SEO, leading to 30% traffic increase.
  • Deployed booking system; increased slot availability and doubled revenue.
  • Directed development for kratom and mushroom product lines; managed formulation and packaging.
  • Oversaw nationwide sales and marketing; coordinated with distributors and trade shows.
  • Managed operations including task delegation, labor scheduling, and troubleshooting.

Co-Founder | Artisan Clouds

Seattle, Wa | January 2015 - November 2019

  • Co-founded e-liquid brands; scaled to co-packing for third-party clients, diversifying revenue.
  • Led R&D for e-liquid formulations; collaborated with chemists to meet client specs.
  • Implemented FDA compliance systems including testing and audits; minimized risks.
  • Scaled marketing, sales, and production; built B2B pipelines and automated lines for efficiency.
  • Built internal Ruby on Rails apps for batch tracking and inventory; enabled traceability.
  • Developed consignment system; reduced delinquency below 3% and boosted adoption.

Co-Founder & CTO | OnlyTheBeat.com

Seattle, Wa | January 2012 - May 2015

  • Co-founded EDM news platform; grew to second-largest global source for music insights.
  • Launched site with WordPress, rebuilt in Ruby on Rails; improved performance and scalability.
  • Recruited 45+ writers with VIP incentives; enabled high-volume content at low costs.
  • Engineered SEO and sharing tools; drove millions of monthly visits and optimized revenue.
  • Negotiated partnership with Complex Media; expanded distribution and audience reach.
  • Oversaw enhancements in responsive design and analytics dashboards; ensured agile scalability.

Web Design & Marketing | USC Events

Seattle, Wa | February 2011 - October 2013

  • Developed event websites, email systems, and administered Linux servers.
  • Applied data analytics and resolved performance issues.
  • Integrated ticketing APIs and updated apps with responsive design.

Education

Full-Stack Ruby on Rails Developer Certificate | Code Fellows

Seattle, Wa | 2014

  • Completed 12-week bootcamp in Ruby on Rails full-stack development; mastered MVC, ActiveRecord ORM, RESTful APIs, and scalable app building from concept to deployment.
  • Built projects integrating HTML/CSS/JavaScript front-ends with Ruby backends; included authentication, database management, Heroku deployment, agile workflows, and code reviews using Git.

Back-End Web Development with Ruby on Rails Certificate | General Assembly

Santa Monica, CA | 2013

  • Completed part-time course in Ruby on Rails back-end development; built skills in MVC, ActiveRecord ORM, RESTful APIs, and databases like PostgreSQL/SQLite.
  • Developed projects with authentication and CRUD operations; focused on code reviews, pair programming, Git version control, and scalable apps.