Sergio Marquez Software Engineer

Senior Product Engineer (Ruby on Rails)

KaiPod Learning

Jun 2024 - Current (2 years 5 months)

I work as a Senior Product Engineer on Newton, KaiPod Learning's microschool management platform, within a fast-moving four-developer team building the product from the ground up. KaiPod is a Y Combinator S21 company that reported 150+ independently operated partner schools across 30+ states in May 2026; every Partner Network school has Newton enabled.

- Work across product discovery, user research, systems analysis, design, technical planning, and full-stack implementation.
- Partner directly with founders and teachers to turn operational needs into role-based workflows across the Ruby on Rails web platform and Hotwire Native applications for school owners, staff, teachers, parents, and students.
- Expand Newton's Acti

Software Engineer

Decisiv Inc.

Jul 2017 - Current (9 years 4 months)

- Fullstack developer at Decisiv SRM. Building several Ruby on Rails applications, and helping improve stability and performance.
- Promoted to team lead after ~12 months and have been managing a team of 3 since then.
- Architected and developed solutions for complex problems involving collaboration between multiple 3rd parties and backend systems.

Technologies: Ruby on Rails, ReactJS, AWS, PostgreSQL, Elasticsearch, Sidekiq, Redis

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Backend engineer

Paper Kite Ltd (PaperKite)

May 2016 - May 2017 (1 year 1 month)

- Backend API developer for multiple, popular mobile applications Create APIs capable of communicating with multiple external services, handling requests from vast user bases while keeping a high performance, error free environment.
Provide data analysis tools to help clients better comprehend their users behaviour and needs. Technologies used: Ruby on Rails 5.0, Ruby 2.3, ElasticSearch, PostgreSQL, Amazon AWS, Sidekiq, Redis.

Projects:
- BPMe New Zealand: The official BP New Zealand app, Pay for fuel with your phone and skip queues.
- All Blacks Rugby: The Official All Blacks App, includes live match stats.
- AMPM Scratch Power: Scratcher game for the huge convenience store chain in the USA.

Software Engineer

Thinkcerca

Feb 2015 - Apr 2016 (1 year 3 months)

- Worked with a team of 10 software developers to build an education oriented web application as a full stack developer.
- Technologies: Ruby on Rails, EmberJS, Git, PostgreSQL.

Ruby on Rails Developer

SparkDigital

Jun 2013 - Feb 2015 (1 year 9 months)

- Project: Twenty Pine. Developed a Job Recruiting web application. Technologies: Ruby on Rails, AngularJS, PostgreSQL.
✔ Project: Founder Shield (app.foundershield.com)
Developed a web application intended to make the process of filling insurance forms more intuitive and user-friendlier. After the form is completed, the information is written on different PDF/XDF templates.

Technologies: Ruby on Rails, AngularJS, Jquery, PostgreSQL, pdftk. ✔ Project: Visible Measures Development of a series of internal web applications making use of external service endpoints in conjunction with another development team abroad.
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Software Engineer

SoftPro - Soluciones de Negocios

Jul 2012 - May 2013 (11 months)

- Ruby on Rails full-stack software engineer at CasinoApp: Casino management web application
- Duties: Whole process of design and development of company's core products.

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Software Engineer

System Graphics

Nov 2011 - Aug 2012 (10 months)

- Ful stack web developer for internal account management and sales application.
- Duties: Development of a Mobile website for door to door salesmen using PHP and Technologies: PHP, PHP ActiveRecord ORM library, JQuery v1.7.2, JQuery Mobile, HTML5, CSS3

Sergio Marquez

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Sergio Marquez

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