José
CTO (Fractional)
Skills
Languages
About
Senior Software Engineer and architect with extensive experience in full-stack product development across frontend, backend systems and connected devices. Experienced technical mentor, with a strong focus on coaching engineers. Significant domain experience in IoT, streaming platforms, and medical systems, including systems with high availability and regulatory constraints. Proficient in Node.js, React, C#, and scoped professional experience with Rust and Kotlin.
Work Experience
Hands-on Engineering Manager
2022 - 2025Aira
Responsible for building the initial backend systems and IoT application layer. Designed architecture for IoT data ingestion and device control. Developed internal tooling for IoT operations. Implemented application layer in Rust to connect hardware devices with the cloud. Created system module to control hardware LED strip. Developed React-based tooling for teams to experiment with LED strip. AWS, Kubernetes, Kotlin, PostgreSQL, Rust, AWS IoT, Spring Boot.
Founding Engineer / CTO
2019 - 2022Ally
Health-tech startup digitalizing doctor visits. Designed system architecture, implemented backend, built back-office and hospital web applications, KPI/metrics system, travel optimization algorithms in Python, ensured legal compliance. C#, .NET Core, Node.js, Python, React, Google Cloud, Azure, Kubernetes, Docker.
Lead Software Engineer
2014 - 2019Viaplay
Technical leader for web platform. Assured sustainability, safety, efficiency, monitoring, product evolution, and migration of legacy systems. Migrated system to React. Implemented streaming web player for live/VOD, Chromecast player, pay-per-view, live TV. Migrated legacy to backend-for-frontend architecture.
Senior Full-Stack Software Engineer
2014 - 2019Viaplay
In charge of web clients and adjacent backend systems. React.js, Redux, React Sagas, AWS, Node.js, DynamoDB.
Senior Front-end Developer
2012 - 2014Cloudnine
Developed technical solutions with designers for customers including BMW, Hallon, Sybilla, Investor AB, Kungl. Ingenjörsvetenskapsakademien, Postkodlotteriet, Svenskt trä. WordPress, jQuery, HTML5, CSS.
Junior Developer
2010 - 2011Odelay
Developed in-house CMS solution. E-commerce and website development for several customers. Ruby On Rails, CSS, HTML5, jQuery.
Junior Front-end Developer
2010 - 2011Squace
Developed several web-based solutions. Java, CSS, HTML5, jQuery.
Education
I.E.S. Francisco Ayala, Granada
Sep 2008 - Jul 2010Técnico Superior en Desarrollo de Aplicaciones Informáticas
KT
Jan 2017 - Jan 2017Cybersecurity Analysis
University of Washington
Feb 2017 - Feb 2017Machine Learning Foundations: A Case Study Approach
ABF Stockholm
Jan 2014 - Jan 2014Svenska Som Andraspråk 1, 2 and 3 - Svenska C
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