Adrián Calle

Valladolid, Castile and León, Spain

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Summary

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Adrián Calle is a versatile backend and DevOps-focused software engineer from Valladolid with 13 years of experience and a tenure at Telefónica since 2020 working on projects like Kernel, HaaC Agente Unico, and Living Apps eCommerce. He programs primarily in Kotlin, Java and Python, and operates production services on Azure and Kubernetes while also contributing frontend work for Living Apps Maker. An active open-source contributor, he has extended Scryer Prolog and Falco with backend features—demonstrating comfort working inside systems code and cloud-native security tooling. He brings a curious, research-minded approach, applying niche techniques such as Prolog to practical problems and improving HTTP and hostname handling in well-known projects. Outside engineering he has led student IT and finance roles at BEST Valladolid, assisted in archaeology at Numancia, is a PADI diver, and represented Spain in the 2015 World Orienteering Scholar Competition.

13 years of coding experience

Grado en Ingeniería, Ingeniería informática, Grado en Ingeniería, Ingeniería informática at Universidad de Valladolid

Título de Bachillerato, Bachillerato de Ciencias y Tecnología - Rama tecnológica, 8,59, Título de Bachillerato, Bachillerato de Ciencias y Tecnología - Rama tecnológica, 8,59 at IES Zorrilla

Chinese, Spanish, English

Github Skills (19)

kubernetes10

container10

c-language10

run-time10

environment-variables10

haiku10

manipulate10

kubernetes-pods10

falco10

prolog10

cprogramming-language10

cloud-native10

grpc10

audio-processing9

http9

Programming languages (25)

C#CGoCommon LispMustacheHTMLJupyter NotebookTypeScript

Github contributions (5)

haikuports/haikuports

Aug 2013 - Feb 2019

Software ports for the Haiku operating system.

Role in this project:

Backend Developer

Contributions:120 commits, 11 PRs, 22 comments in 5 years 6 months

Contributions summary:Adrián's commits primarily focused on modifications to the APlayer software, which is a software port for the Haiku operating system. These commits involved code changes related to game music emulators such as libgme, suggesting a focus on the backend logic and functionality of the music playback. The changes included modifications to include deprecated functions, adjust equalizer settings, and generally refine the audio-related features.

operating-systemhaikuhaiku-ospackage-manager

mthom/scryer-prolog

Feb 2020 - Jan 2023

A modern Prolog implementation written mostly in Rust.

Role in this project:

Back-end Developer

Contributions:21 reviews, 100 commits, 104 PRs in 3 years

Contributions summary:Adrián contributed primarily to the back-end logic of the Scryer Prolog implementation. Their commits focused on adding new features to the core functionality, specifically by implementing new list manipulation predicates such as `max_list`, `min_list`, `list_max`, and `list_min`. They further added support for HTTP server features, including handling request and response headers, and reading HTTP bodies. This indicates a focus on extending and improving the Prolog system's capabilities.

prologrustprolog-interpreterprolog-implementationiso-prolog-standard

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