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arielsrv/README.md

Hi, I'm Ariel PiΓ±eiro πŸ‘‹

Head of Engineering · Senior IT Expert · 20+ years in tech 🐹

Software Enthusiast Β· Programming Educator Β· Senior & Executive Manager β€” based in Barcelona, Spain.

I build and lead engineering organizations that ship scalable, maintainable and high-performance backend platforms, aligning technology with real business outcomes.

LinkedIn – Ariel PiΓ±eiro Email Blog Repositories

20+ years Head of Engineering Microsoft MVP Scrum Master Open to work Profile views


πŸš€ About me

Experienced technology professional with 20+ years of expertise in IT leadership, hands-on technical leadership and backend development. Dedicated to creating scalable, maintainable code aligned with business needs while enhancing user experience in close collaboration with product teams.

  • 🧠 From Developer β†’ Architect β†’ Tech Lead β†’ CTO β†’ Head of Engineering.
  • 🐹 Go expert (~60% of my repos) β€” polyglot in Java, C#, Python, Kotlin, Groovy.
  • πŸ›οΈ Architecture end-to-end: microservices, event-driven systems, REST/gRPC, SQL & NoSQL, caching, performance, observability.
  • ☁️ Full Docker Β· Kubernetes Β· CI/CD Β· Cloud lifecycle in production.
  • πŸ‘₯ People & Tech Leadership: hire, mentor and scale engineering teams, define standards and career paths.
  • πŸ€– Currently leading agentic / AI-based automation initiatives for Operations at Remitee.
  • 🌍 Based in Barcelona, Catalonia Β· Spain Β· open to remote opportunities worldwide.
  • πŸ—£οΈ Spanish (native) Β· English (professional working).

Open to: Head of Engineering Β· VP Engineering Β· Director Β· Principal / Staff Β· Engineering Manager β€” especially on Go-heavy platforms at scale.


πŸ’Ό Career highlights

🏦 Remitee β€” Head of Money Transfer Β· Dec 2025 β†’ Present Own the Money Transfer domain & Integrations, leading Managers and Tech Leads in close collaboration with Platform Teams. Driving the reengineering of the Money Transfer system (scalability, maintainability, reliability) and leading agentic / AI projects for Operations (automation, orchestration, efficiency). Reports to the CTO.

🐾 Grupo IskayPet (Tiendanimal Β· Kiwoko Β· Kivet Β· Clinicanimal) β€” Senior Technical Lead / Head of Backend Β· May 2022 β†’ Dec 2025 Head of Backend for the Digital Hub. Designed cross-cutting reusable modules, observability & telemetry stack, infrastructure components (auth, caching, messaging), DevOps (CI/CD, IaC, containers) and developer tooling. Drove product design with lightweight, intuitive services. Reported to the Engineering Director.

πŸ›’ Mercado Libre β€” Sr. IT Expert / Product Development Manager / Project Lead Β· Mar 2016 β†’ Nov 2021 (5y 9m) Worked on Mercado Shops, Mercado Puntos (Loyalty), Recommendations and Deals (Hot Sales, Early Access). As manager of MyAccount & Messaging, led teams of up to 60 people with 6 direct reports. Stack: Java, Kotlin, Go, Angular, Grails/Groovy, Spark, Python, Elasticsearch, MySQL, K/V stores, message systems, Nginx.

πŸš— DE AUTOS SA β€” CTO / Development Manager / Technical Leader Β· 2012 β†’ 2016 Owned the technology strategy of a classifieds platform. Delivered a public RESTful API with OAuth2, scaled team +400%, reduced incidents from 50 β†’ 5/month, achieved 0.005% error rate (NewRelic), ~20 ms avg response time and 80% automation coverage.

🌐 Globant β€” Technical Leader / Architect Β· 2010 β†’ 2012 Architect and tech lead for accounts such as Deloitte, YPF, Coca-Cola and Kimberly Clark. Roadmap, customer communication and internal tech training.

πŸŽ“ EducacionIT β€” Instructor Β· 2011 β†’ 2022 (10+ years) Taught Microservices, Messaging, TDD, Design Patterns & SOLID, Scrum/Agile, C#, Java, Functional Programming (LINQ / Java 8+).

πŸŽ“ Universidad CAECE β€” Teacher Β· 2016 β†’ 2017 Lecturer in Algorithms and Data Structures II; TA in Algorithms and Data Structures I.

Earlier roles: Ternium, InvertirOnline.com, Papel Prensa S.A. β€” Sr/SSr/Jr .NET Developer (2005 β†’ 2010).


πŸ† Awards & Certifications

  • πŸ… Microsoft MVP β€” recognition for community contribution and technical expertise.
  • πŸ“œ Scrum Master Certified (SMC).
  • πŸŽ“ Licenciado en Sistemas β€” Universidad CAECE (2005–2012).
  • πŸŽ“ Software Architectures β€” Universidad TecnolΓ³gica Nacional (UTN).

πŸ›  Tech Stack

Languages

Go Java C# Kotlin Python Groovy SQL

Backend, APIs & Messaging

gRPC REST Spring .NET Kafka RabbitMQ

Data

PostgreSQL MySQL SQL Server Redis MongoDB Elasticsearch

Cloud, DevOps & Observability

Docker Kubernetes AWS Terraform GitHub Actions Jenkins Grafana Prometheus NewRelic Nginx

Leadership & Methodologies

Scrum Agile TDD DDD Team%20Management


πŸ“Œ Featured Projects

πŸ‘‰ Explore all my Go projects: github.com/arielsrv?tab=repositories&language=go


πŸ“Š GitHub in numbers

Ariel's GitHub stats GitHub Streak Top Languages
GitHub Trophies



Activity graph

⏱ WakaTime Activity

Code Time

Profile Views

🐱 My GitHub Data

πŸ“¦ 279.9 kB Used in GitHub's Storage

πŸ† 351 Contributions in the Year 2026

πŸ’Ό Opted to Hire

πŸ“œ 130 Public Repositories

πŸ”‘ 39 Private Repositories

I'm an Early 🐀

🌞 Morning                10701 commits       β–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   46.90 % 
πŸŒ† Daytime                8343 commits        β–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   36.57 % 
πŸŒƒ Evening                3184 commits        β–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   13.96 % 
πŸŒ™ Night                  587 commits         β–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   02.57 % 

πŸ“… I'm Most Productive on Monday

Monday                   3720 commits        β–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   16.31 % 
Tuesday                  3701 commits        β–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   16.22 % 
Wednesday                2954 commits        β–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   12.95 % 
Thursday                 3271 commits        β–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   14.34 % 
Friday                   2647 commits        β–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   11.60 % 
Saturday                 3320 commits        β–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   14.55 % 
Sunday                   3202 commits        β–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   14.03 % 

πŸ“Š This Week I Spent My Time On

πŸ’¬ Programming Languages: 
No Activity Tracked This Week

πŸ”₯ Editors: 
No Activity Tracked This Week

πŸ±β€πŸ’» Projects: 
No Activity Tracked This Week

I Mostly Code in Go

Go                       65 repos            β–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   59.09 % 
C#                       16 repos            β–ˆβ–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   14.55 % 
Java                     15 repos            β–ˆβ–ˆβ–ˆβ–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   13.64 % 
Python                   2 repos             β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   01.82 % 
Dockerfile               1 repo              β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘   00.91 % 

Timeline

Lines of Code chart

Last Updated on 05/06/2026 20:32:04 UTC


🀝 Let's connect

If you're scaling a platform, building an engineering org, or looking for a Head / VP / Principal who has been on both sides of the keyboard for 20+ years β€” let's talk.

LinkedIn – Ariel PiΓ±eiro Email Blog Follow on GitHub

⭐ If something here was useful, consider starring one of my repos β€” it really helps!

Pinned Loading

  1. valordolarhoy valordolarhoy Public

    POC for Reactive extensions

    C# 2

  2. javalin-api javalin-api Public

    Java 3

  3. go-kvs-client go-kvs-client Public

    Go

  4. go-scope-config go-scope-config Public

    Dynamic configuration based on environment

    Go

  5. go-seq go-seq Public

    Forked from sectrean/go-seq

    Go

  6. rustapi rustapi Public template

    Forked from ndelvalle/rustapi

    πŸš€ RESTful Rust API Template / Boilerplate

    Rust