Hi, I'm Ariel Piñeiro 👋

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

Software Enthusiast · Programming Educator · Senior & Executive Manager — 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.

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

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

🏦 Remitee — Head of Money Transfer · Dec 2025 → 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 · Kiwoko · Kivet · Clinicanimal) — Senior Technical Lead / Head of Backend · May 2022 → 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.

🛒 Mercado Libre — Sr. IT Expert / Product Development Manager / Project Lead · Mar 2016 → 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.

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

🌐 Globant — Technical Leader / Architect · 2010 → 2012 Architect and tech lead for accounts such as Deloitte, YPF, Coca-Cola and Kimberly Clark. Roadmap, customer communication and internal tech training.

🎓 EducacionIT — Instructor · 2011 → 2022 (10+ years) Taught Microservices, Messaging, TDD, Design Patterns & SOLID, Scrum/Agile, C#, Java, Functional Programming (LINQ / Java 8+).

🎓 Universidad CAECE — Teacher · 2016 → 2017 Lecturer in Algorithms and Data Structures II; TA in Algorithms and Data Structures I.

Earlier roles: Ternium, InvertirOnline.com, Papel Prensa S.A. — Sr/SSr/Jr .NET Developer (2005 → 2010).

• 🏅 Microsoft MVP — recognition for community contribution and technical expertise.
• 📜 Scrum Master Certified (SMC).
• 🎓 Licenciado en Sistemas — Universidad CAECE (2005–2012).
• 🎓 Software Architectures — Universidad Tecnológica Nacional (UTN).

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

🐱 My GitHub Data

📦 ? Used in GitHub's Storage

🏆 751 Contributions in the Year 2026

💼 Opted to Hire

📜 135 Public Repositories

🔑 0 Private Repositories

I'm an Early 🐤

🌞 Morning                10269 commits       ████████████░░░░░░░░░░░░░   46.45 % 
🌆 Daytime                8105 commits        █████████░░░░░░░░░░░░░░░░   36.66 % 
🌃 Evening                3150 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.25 % 
🌙 Night                  582 commits         █░░░░░░░░░░░░░░░░░░░░░░░░   02.63 % 

📅 I'm Most Productive on Tuesday

Monday                   3616 commits        ████░░░░░░░░░░░░░░░░░░░░░   16.36 % 
Tuesday                  3644 commits        ████░░░░░░░░░░░░░░░░░░░░░   16.48 % 
Wednesday                2864 commits        ███░░░░░░░░░░░░░░░░░░░░░░   12.96 % 
Thursday                 3222 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.58 % 
Friday                   2525 commits        ███░░░░░░░░░░░░░░░░░░░░░░   11.42 % 
Saturday                 3203 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.49 % 
Sunday                   3032 commits        ███░░░░░░░░░░░░░░░░░░░░░░   13.72 % 

📊 This Week I Spent My Time On

💬 Programming Languages: 
No Activity Tracked This Week

🔥 Editors: 
No Activity Tracked This Week

🐱‍💻 Projects: 
No Activity Tracked This Week

🤖 AI Coding This Week

No AI Coding Activity Tracked This Week

I Mostly Code in Go

Go                       65 repos            ███████████████░░░░░░░░░░   58.56 % 
Java                     16 repos            ████░░░░░░░░░░░░░░░░░░░░░   14.41 % 
C#                       16 repos            ████░░░░░░░░░░░░░░░░░░░░░   14.41 % 
Python                   2 repos             ░░░░░░░░░░░░░░░░░░░░░░░░░   01.80 % 
Dockerfile               1 repo              ░░░░░░░░░░░░░░░░░░░░░░░░░   00.90 % 

Timeline

Last Updated on 08/08/2026 19:15:54 UTC

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 — let's talk.

_{⭐ If something here was useful, consider starring one of my repos — it really helps!}