Sebastián
Cardona Henao
Mobile Software Engineer · Team Lead
profile
Results-driven Mobile Software Engineer and Team Lead with 5+ years of end-to-end product experience, currently leading a Flutter banking application for Banco BPI and previously co-leading the architecture of an Android library for Banco Santander Particulares.
Consistent track record of shipping production-ready software for top-tier European banking clients (Banco Santander, Banco BPI), public healthcare (Hospital Vall d'Hebrón) and enterprise ERP / retail products. Strong technical foundation in Clean Architecture, MVI, BLoC and Domain-Driven Design, combined with proven leadership skills.
Proactive learner, low-ego collaborator and trusted technical partner across business, product and engineering teams.
key highlights
- Team Lead on two enterprise banking projects (Banco BPI as sole Team Lead, Banco Santander Particulares as co-Lead) — sprint planning, technical decisions, mentoring and code reviews.
- Multi-stack mobile engineer — Android (Kotlin/Java), Flutter (Dart) and Kotlin Multiplatform (KMP) — applying the right architecture to each platform.
- Architecture-team member at Banco Santander — identified and removed long-standing technical debt across legacy code.
- Hybrid native ↔ web integration specialist — designed WebView layers with JavaScript bridges enabling legacy and modern apps to coexist.
- Cross-industry delivery — four enterprise mobile projects in 3 years spanning banking, healthcare, analytics integration and retail ERP.
- Ships side projects to completion — Food Rats (KMP) and a Flutter POS adapted to Spanish VERIFACTU.
- Bilingual — Spanish (native), English (professional working proficiency).
technical stack
work experience
Plexus Tech S.L.
may 2023 — present · 3 yrsMobile Software Engineer / Team Lead · Alicante
Selected to lead and contribute to four enterprise mobile projects, three of which serve top-tier European banking clients.
Banco BPI — Team Lead, Flutter Developer
- Lead a team of 2 developers, owning sprint planning, code reviews and key technical decisions for a Flutter-based banking application.
- Architected and integrated a fully interactive WebView layer that bridges native device capabilities and emulates the behavior of a legacy Cordova application.
stackFlutter · Dart · WebView · JS Bridges · Clean Architecture · BLoC
Banco Santander Particulares — Team Lead, Architecture & Support
- Co-led the development of a WebView library with JavaScript bridges, improving communication between the web layer and the native Android application.
- Member of the Architecture team — identified and resolved critical technical debt across legacy code.
- Acted as part of the support team, diagnosing and patching critical production bugs.
stackAndroid · Kotlin · Java · WebView · JS Bridges · Clean Architecture · MVI
Banco Santander Empresas — Android Developer
- Integrated end-to-end analytics tracking (Tealium) into the corporate Android application.
stackAndroid · Kotlin · Clean Architecture · MVI
Hospital Vall d'Hebrón — REANIMATE — Android Developer
- Designed and developed an Android application that assists physicians during cardiac arrest events, tracking real-time action timings and producing detailed technical records that feed directly into patient clinical histories.
- Collaborated closely with medical staff to translate clinical requirements into a reliable, time-critical and audit-ready tool.
stackAndroid · Kotlin · Clean Architecture · MVI
Query Informática S.L.
may 2021 — may 2023 · 2 yrsAndroid Developer · ERP / Retail
- Developed and maintained Android applications for a proprietary ERP product suite, delivering features deployed across multiple client environments.
- Contributed to the design and evolution of a product-oriented Android codebase, collaborating closely with the in-house product team.
stackAndroid · Java · Kotlin · MVP · MVVM
personal projects
Food Rats
kotlin multiplatformA closed-group social application (concept inspired by GymRats) where members share meal photos and rate one another on how "professional chef" each dish looks.
stackKotlin Multiplatform (KMP) · Clean Architecture · MVI
TPV with VERIFACTU
flutter · posA cross-device Point of Sale (POS) application fully adapted to the Spanish VERIFACTU legislation, targeting retailers of any size.
stackFlutter · Dart · Clean Architecture · BLoC · DDD
education
AI & Big Data
especialización · grado superior
Multi-Platform App Development
grado superior · spain