Production stability
Hands-on experience debugging complex issues across devices and Android versions, and designing automated UI/end-to-end test suites with Appium and Sauce Labs to strengthen application reliability.
Android Developer based in Málaga
Iván Hijano Pérez
Android Developer with 4 years of experience developing and maintaining mobile applications in production environments.
Open to product teams, technical collaborations, and opportunities where performance, stability, and well-structured architecture matter.
Specialized in Kotlin and modern Android architectures such as MVVM and Clean Architecture, with hands-on experience in performance optimization, debugging complex issues, automated testing (Appium, Sauce Labs), and improving stability in a banking environment with strict quality and accessibility standards.
Since 2025 I also build custom software as a freelancer: management applications for a quarry and a concrete plant, and a document automation tool for a building materials supplier, all in daily use. I'm also building Klendar, a real-time local offers and events platform where I own the architecture, backend, and mobile and web apps.
About
I work on high-impact applications with large user bases, contributing to feature delivery, code quality, user experience, and long-term maintainability.
- Used to working in Agile environments and collaborating closely with cross-functional teams.
- Comfortable balancing product goals, technical quality, and user-facing reliability.
- Passionate about building scalable and maintainable solutions across mobile and backend contexts.
Profile
What I bring
Architecture and maintainability
Strong foundation in Kotlin, MVVM, and Clean Architecture, with attention to scalability and clear separation of concerns.
Product mindset
I like connecting technical decisions with usability, business needs, and efficient team delivery.
Experience
Professional experience
-
Freelance Software Developer
Self-employed
Custom business software for companies, from on-site requirements gathering to deployment and support.
- Cantera Pinos de Alhaurín (quarry): .NET desktop application for invoices, delivery notes, per-machine costs and PDF reporting, with VeriFactu e-invoicing compliance (digital certificate, submission to the Spanish Tax Agency, QR codes).
- Hormigones Guadarranque (concrete plant and fleet): invoicing by m³ and by tonne, vehicle and driver documentation on Google Drive, and profit per truck and per plant.
- Matcon Hnos. Gámez Domínguez (building materials): automation that stamps a QR code on every document dropped into a shared folder, linked to a cloud copy and safe for several PCs at once.
-
Android Developer
Minsait, Indra
Development and maintenance of a large-scale mobile banking application for CaixaBank, working with Kotlin and Java in a demanding production environment.
- Implemented new features aligned with evolving business requirements while ensuring the stability and reliability of existing functionalities.
- Actively debugged and resolved production issues, analyzing complex behaviors across devices and Android versions, and contributing to performance improvements and overall application stability.
- Designed and implemented accessible and user-friendly interfaces following Material Design and accessibility guidelines, improving usability and inclusivity across different user profiles.
- Designed and executed automated UI/end-to-end test suites with Appium and Sauce Labs, validating critical banking flows across multiple devices, and distributed test builds through App Center for QA validation cycles.
- Worked within Agile Scrum workflows using Jira, Rally, and GitLab, collaborating closely with cross-functional teams to ensure efficient delivery and continuous integration.
-
Frontend Developer (Internship)
AML Analytics
Development of a financial web application focused on detecting suspicious and non-suspicious transaction scenarios.
- Implemented new features and fixed issues using Angular, TypeScript, and SQL while maintaining high standards in both functionality and performance.
- Contributed to the full development cycle, including testing and validation, inside an Agile Scrum environment.
- Worked in English with an international team and gained on-site experience in the United Kingdom within a multicultural professional setting.
Skills
Technologies and tools
- Java / Kotlin
- Retrofit
- Room
- Jetpack
- Coroutines
- Flow
- Dagger Hilt
- MVVM / MVP
- Compose / XML
- Gson
- Material Design
- Clean Architecture
- Git
- Firebase
- GitLab
- Picasso / Glide
- Sauce Labs
- Appium
- App Center
- Rally / Jira
Own product
What I build on my own
Flutter · Real-time platform · In progress
Klendar — Local Offers & Events Platform
Real-time flash offers and events platform built with Flutter (Android & iOS), with a proximity-based feed similar to short-form social apps, a Mapbox-powered map, and single-use QR code redemption. Backend on Supabase (PostgreSQL + PostGIS) with Row Level Security across every table, Realtime for live updates, and Firebase push notifications. Includes an admin panel, a subscription system for business accounts, and a companion website (with legal pages in Spanish and English) deployed on Cloudflare Pages.
Education
Degree in Software Engineering
Universidad de Málaga · 2018 - 2022
Final Degree Project focused on the design and development of a native Android application aimed at enhancing social interaction within a scout association, including authentication, profile management, role-based access, social feed, real-time chat, and shared calendar functionality.
Languages
Communication and collaboration
- Spanish
- Native
- English
- Professional working proficiency (B2)
- French
- Basic proficiency (A2)
Contact
Want to talk about a role or a project?
Get in touch about Android roles, technical collaborations, or custom software projects.