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Jesús Leganés-CombarroJL

Jesús Leganés-Combarro

Supermalter

WebRTC, fractional CTO, and Software Architect

$1,210/day
8 projects
Madrid, ES
15+ years

Average response time: 1 hour

About Jesús

Passionate computers engineer and ex-PhD. candidate in Computers Engineering. Proud advocate of Open Source, standards, specifications, and best practices.

With more than 22 years of professional experience, and being involved in Open Source scene and wireless communities since I was 17 years old, I have been working both profesionally or in personal side projects in almost all computer engineering areas, including web development, robotics, operating systems desing, videogames, networking, or drivers programming. My profile is purely technical, with a great interest in hard-to-solve problems, quality of code, performance optimizations, high-edge technologies, and design of clean APIs and architectures focused on minimal designs, modularity and reusability.

I'm fullstack with preference for backend, R&D and academic projects. Thanks to that, I have more than 10 years of experience with Node.js, and I'm also expert in Python and C++ between other languajes, and I'm currently interested on Rust. Regarding mobile apps, I have 5 years of experience with ReactNative.

I have won three times the spanish national Universitary Free Software Championship and been CTO of two start-ups (and co-founder of one of them). Currently I'm working as WebRTC Architect at Dyte and as part-time freelance developer, consultor and auditor. In my spare time I like to read books, go to cinema or travelling, go running or cycling, or work on my own side projects to improve my skills and craft things with cool high-edge technologies.

I have a Licenciature in Computers Engineering, and convalidated It to the equivalent Master in Computers Engineering. My Licenciature (and Master) thesis was NodeOS, a minimal operating system for Node.js based applications, with more than 6000 stargazers on GitHub, winner on the Systems category at the 11th CUSL national championship, and graduated with distinction. My Licenciature thesis director was Prof. Enrique Soriano-Salvador.
  • Spanish

    Native or bilingual

  • English

    Native or bilingual

  • French

    Conversational

  • Chinese

    Basic

  • Arabic

    Basic

Can work on-site
Madrid (up to 50km), Valencia (up to 50km), Barcelona (up to 50km), Las Palmas de Gran Canaria (up to 50km), Sevilla (up to 50km)

Experience

  • Prosegur Security Global SIS
    Malt logoOn Malt
    Consultoría WebRTC y streaming
    PUBLIC SAFETY
    February 2026 - March 2026 (1 month)
    Reduced 30-50% connection times and latency of media streaming server with 60k video sources, using 90% less memory, and done in 1/30 of initial estimated time
    Mediamtx Video Streaming WebRTC live streaming streaming
  • QinoBot Festival
    Malt logoOn Malt
    Software Architect & CTO
    FILM AND AV
    July 2025 - October 2025 (2 months)
    Madrid, España
    - Propose high level software architecture of QinoBot project
    - Define development time estimation
    - Plan MVP scope for a timeframe of 1-2 months
    - Develop streaming and voting platform with Django
    - Implement UI from Prisma mockups
    - Deployment using Heroku instances
    - Manage contributions from other freelancers
    Django Python Software Architecture Video Streaming Heroku
  • TRC
    Lead Software Architect - Innovation
    July 2024 - Today (1 year and 11 months)
    Madrid, Spain
    • Implementation of PECAL 2210 specification (NATO software quality assurance requirements)
    • NATO Secret level Security Personnel Authorization (HPS) in process

Reviews

5.0

Out of 3 ratings

G

Gud

Gud Company

Reviewed on 14/07/2022

Trabajar con Jesús ha sido un lujo. Ha sido capaz de ofrecernos una visión ajustada y minuciosa del estado del proyecto y nos ha asesorado en todo momento de una manera certera, clara, honesta y muy profesional. Seguiremos colaborando con él sin duda alguna.
G

Gud

Gud Company

Reviewed on 01/09/2022

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Education

  • Licenciature on Computers Engineering
    Rey Juan Carlos University
    2016
    Convalidated to Degree + Master on Computers Engineering in 2017

Skill set

Categories