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Joaquín Oltra Hernández

Summary

I am a Software Engineer and Engineering Manager with more than 10 years of industry experience. As an engineer I specialize in UI web development, and have broad experience in the different skills involved in effectively producing maintainable software.

As a manager I strive to provide clear direction, trust and autonomy to my reports so that they can execute on the team and organization's objectives effectively, while developing professionally and advancing their careers.

Work experience

Routine
Senior Software Engineer, Frontend
2024 - Present

Remote. Working as an engineer in a small startup team, building a web and desktop client for a productivity and PKM tool with calendar, tasks and notes. Using Electron, Vue, Typescript, SASS, Prosemirror and OCaml.

  • Added a new global search key bind and modal for navigation
  • Built a new block-based rich text editor with custom types based on Prosemirror. Featuring:
    • Draggable blocks
    • Block mouse and keyboard selection
    • Custom blocks like tasks, embeds, inline references, callouts, etc
    • Undo/redo
    • Document synchronization and content reconcilliation
    • Custom keyboard shortcuts and actions
  • Upgraded tooling from deprecated vue-cli to the Vue recommended vite
    • Updated codebase to work with ESM
    • Updated testing tooling
    • Updated Electron app building process
    • Updated SASS to modern versions
    • Fixed Typescript not passing type checking by fixing hundreds of errors
  • Lots of other small features, like a system theme option, and continuous bug fixes
  • Maintenance, support for users and the community
Wikimedia Foundation
2014 - 2023

Staff Software Engineer, Tech lead 2021 - 2023

Remote. Working in the Trust and Safety Tools team as the tech lead and software engineer.

  • Defined project scope, performed technical feasibility research and worked with product manager, designer, and other stakeholders on defining and detailing the project into actionable technical work to be executed by the team for major projects like the Safety Survey and Private Incident Reporting System
  • Led set up of team kanban processes and norms collaboratively and codified the norms and processes in our tools and documentation
  • Onboarded and guided several engineers on the team into the company and projects
  • Developed several features for MediaWiki's QuickSurveys extension and trained engineers on deployment procedures for configuring, enabling and disabling surveys

Staff Developer Advocate 2020 - 2021

Remote. Working in the Developer Advocacy team in support of the Cloud Services team and tool developer community.

  • Designed and conducted the 2020 Coolest Tool Award online event jointly with community members, coordinating the event committee, and helping produce and run the event
  • Conducted, analyzed and published the Cloud Services Annual Survey 2019 and 2020, to understand our technical users and inform the teams' annual planning processes
  • Analyzed research, and produced a prioritized list of communities for outreach based on data, and run an outreach workshop about bot development with Python
  • Supported the Cloud Services teams projects, like deploying a new cluster of databases to replace the existing one, by providing technical documentation and code examples, and communicating and supporting the communities through the process

Software Engineering Manager 2018 - 2020

Remote. Manager of the Wikimedia Product Infrastructure team.

  • Built REST APIs used by the native apps teams and the web teams serving 1.5 billion unique devices serving 2 billion requests monthly
  • Maintained a variety of backend components providing features such as reading lists, PDF rendering, and the Wikipedia Maps infrastructure
  • Planned and resourced an effort to provide better data engineering tools and libraries for all product teams in the product department

I set team direction and anual and quarterly goals, hired and managed awesome engineers to further Wikimedia's objectives, giving them space and trust to work effectively in a complex collaborative remote environment.

Senior Software Engineer 2016 - 2018

Details

Remote. Worked on the Mobile Web team doing JavaScript, CSS and MediaWiki PHP programming for the mobile Wikipedia websites which powers the user experience of ~60% of Wikipedia's traffic (9.5 billion monthly pageviews on 1.5 billion monthly unique devices).

Produced performance research and analysis of the content and website loading which informed several high impact projects, like lazy loading images and references.

Worked on Page previews ( 1 ), providing link previews for Desktop Wikipedia improving the reading experience for 1.5 billion unique devices serving 2 billion requests monthly.

Led and planned technical improvement projects to reduce debt and modernize the codebase while working on Product's goals.

Software Engineer 2014 - 2016

Details

Remote. Worked on the Mobile Web team doing JavaScript, CSS and MediaWiki PHP programming for the mobile Wikipedia websites which powers the user experience of ~60% of Wikipedia's traffic (9.5 billion monthly pageviews on 1.5 billion monthly unique devices).

Built several additional projects including a Survey feature for MediaWiki, public and private reading lists.

Participated in a generative research project on emergent countries quickly building several prototypes to test ideas out with users, and participating in the interview process and information analysis.