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Guillermo Serrahima

Guillermo Serrahima

(he/him)
@serrahima.dev

Back End Engineer

Esplugues de LlobregatCataloniaSpain🇪🇸
Open to:Full-time rolesContract rolesPart-time rolesCommissioned work
Preferred workplace:On-siteRemote (same country)HybridRemote (same region)Remote (worldwide)
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Highlights

Full profile

Backend and systems-oriented Software Engineer with experience in R&D environments and cloud-based SaaS platforms. Background in Rust, Python, and C++, with hands-on experience designing APIs, infrastructure tooling, and developer-facing products. Comfortable working across the full software lifecycle, from prototyping and refactoring to deployment, CI/CD, and production support.

Career: 6

ANSYS, Inc.

Full-time · Remote

Aug 2024 - Nov 2025

Successfully demonstrated a proof-of-concept for clients that removed the need for coding knowledge for in-depth customization of complex physics simulation pipelines. Refactored an internal unmaintained Python library project, as well as introduced testing and continuous integration, to bring it up to company standards.

Python (Programming Language)pytestAgileCookiecutterDocker

Verbio Technologies

Full-time · Hybrid

Jun 2022 - Jul 2024

Implemented scalable and secure solutions focused on providing a reliable service and efficient operation for cloud-based voice recognition.

Rust (Programming Language)gRPCGitCI/CDPython (Programming Language)Amazon Web Services (AWS)TerraformDocker

Qad Dynasys | Digital Supply Chain Planning Software

Full-time · Remote

Jun 2021 - Jun 2022

Contributed to the transformation of a desktop app into a web app, adapting it to a marketable SaaS model.

C++C#

Capitole Consulting

Full-time · Remote

Jan 2021 - Jun 2021

Saved time through the automation of manual PDF report redaction, and integration of data analysis.

C++Python (Programming Language)

HP Inc.

Full-time · Remote

Oct 2019 - Aug 2020
JenkinsScrumAgile

HP Inc.

On-site

Sep 2018 - Oct 2019
GoogleTestC++Agile

Projects: 6

git.serrahima.dev/vylion

Feb 2026 - Present

Alternate Bluesky client designed for selfhosting.

tangled.org/vylion.eurosky.social

Feb 2026

Rewrite of Velascobot with more Python experience.

git.vylion.com/vylion

Sep 2017 - Dec 2020

Personal project of a non-sequitur, silly chatbot for the Telegram chat application using Markov chains for text generation. Personal project that I did during some of my free time.

globalgamejam.org/2018

Jan 2018

Participated as part of a group project in the 2018 Global Game Jam, from the 26th to the 28th of January.

github.com/vylion

Mar 2017

Personal project for an Android app for pseudorandom word generation. Tool mainly designed for the creation of constructed languages. Project started for the Fall 2017 Hackathon event by HackUPC from the 3rd of March to the 5th.

globalgamejam.org/2017

Jan 2017

Participated as part of a group project in the 2017 Global Game Jam, from the 20th to the 22nd of January.

Publications: 5

G. Serrahima5 articles
Read on Leaflet

Learning OAuth

vylion.leaflet.pub

Jun 2026

Shoutout to acme-dns

vylion.leaflet.pub

Apr 2026

First contact with Proxmox

vylion.leaflet.pub

Mar 2026

My journey so far with selfhosting

vylion.leaflet.pub

Jan 2026

My first homelab server

vylion.leaflet.pub

Jan 2026

Skills: 67

Technical

Amazon Web Services (AWS)Android DevelopmentArduinoBack-End Web DevelopmentBashCC#C++
CI/CDCode RefactoringDockerFunctional ProgrammingGitHaskellHTMLJavaJavaScriptJiraLaTeXLinuxLuaMatlabObject-Oriented Programming (OOP)ProgrammingPydanticPythonPython (Programming Language)Representational State Transfer (REST)REST APIsRust (Programming Language)Software DevelopmentSQLiteSWI-PrologTerraformTest AutomationUnity3DVisual StudioXML

Business

AgileAgile MethodologiesScrumSoftware as a Service (SaaS)

Interpersonal

EnglishTeamwork

Other

AndroidAPI DevelopmentArch LinuxCatalanComputer ScienceCookiecutterDebianGitHub Copilot
GoogleTestgRPCJenkinsOpen-Source SoftwareOpenSusePixel ArtPytestQtRaspberry PiSimple and Fast Multimedia Library (SFML)Swing DanceTest CasesTest PlanningTesting ToolsUbuntu

Education: 1

Universitat Politècnica de Catalunya

Bachelor's degree

2013 - 2018

Languages: 3

Catalan(Native or bilingual)
Spanish(Native or bilingual)
English(Professional working)

Also find Guillermo Serrahima on…

Self-hosted ATProto (@serrahima.dev)

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