Adonias HaileSoftware Engineer
Fintech Integration • Java Spring Boot • Flutter Mobile • Enterprise APIs
Software engineer with proven banking and fintech experience. Building secure enterprise Java Spring Boot microservices, WSO2 Micro Integrator middleware, payment switch connectivity, and shipping production Flutter mobile applications end to end.
Adonias Haile
Software Engineer & Mobile Specialist
Addis Ababa, Ethiopia
Academic Education
Bahir Dar University - BIT
B.Sc. in Software Engineering
Faculty of Computing, Bahir Dar Institute of Technology (BIT Poly Campus), Bahir Dar, Ethiopia
Technical Stack & Competencies
Skills & Technologies
Mobile application architecture with Flutter, enterprise backend integrations with Java Spring Boot, and DevOps workflows.
Flutter & Dart
Production mobile apps across Android & iOS, clean architecture, custom animations, BLoC/Riverpod, banking integrations.
State Management
Predictable application state flow using BLoC, Riverpod, and Provider patterns with clean reactive streams.
Mobile Security & SDKs
TLS certificate pinning, biometric keystore authentication, Sopra DBS SDK integration, and encrypted local storage.
Firebase & Cloud Push
Push notification campaigns across multiple package names, real-time database, analytics, cloud storage.
Real-Time & WebSockets
Live driver tracking, bidirectional WebSocket channels, location services, and Google Maps SDK integrations.
App Store & Play Console
Over 1 year owning release management, submissions, compliance, phased rollouts, and in-app update APIs for live banking apps.
Java
Enterprise backend development, object-oriented design, multithreaded services, banking-grade security and reliability.
Spring Boot
RESTful microservices, Spring Security, hexagonal architecture, Keycloak JWT, enterprise banking integration APIs.
WSO2 Micro Integrator
Middleware integration connecting core banking platforms, digital channels, and external national financial switches.
Fintech Switch & Rails
ISO 8583 banking switch protocols, Fayda National ID verification, and IPS (Instant Payment System) interbank rails.
Redis
High-speed caching, distributed session state, asynchronous message queues for banking SMS services.
Python
Backend API services, automated scripting, relational data handling, and rapid prototyping tooling.
Docker
Containerization of microservices and applications, multi-stage builds, container isolation for scalable deployments.
CI/CD & GitHub Actions
Automated pipelines, static analysis, unit test automation, and continuous delivery to deployment environments.
Figma (UI/UX Design)
Full UI/UX design, interactive wireframing, component libraries; designed Alibo Market and Akababi apps.
Clean Architecture & Git
Domain-driven boundaries, SOLID design principles, hexagonal modular structure, agile Git workflows and code reviews.
Career Trajectory
Work Experience
Proven track record in enterprise banking software, fintech middleware, and high-impact mobile solutions.
Flutter Developer
★ Active Banking & Wallet Rollouts- Deliver feature increments, mobile UI enhancements, and defect resolution on the CBE Connect Flutter mobile banking app for Commercial Bank of Ethiopia.
- Contribute to Star Pay fintech mobile payment app, building seamless digital wallet interactions and payment flows.
- Implement clean architecture, rigorous state management, and optimized rendering performance for high-traffic mobile users.
Software Engineer (Spring Boot | Fintech Integration)
★ 500K+ Users • Sopra DBS Core Platform- Built and supported core APIs, middleware integrations, and the production Anbesa Plus mobile banking app on Sopra Banking Software (DBS) platform.
- Engineered REST APIs and integration services with Java Spring Boot and WSO2 Micro Integrator (MI) for digital banking channels and core banking backbones.
- Built the bank's Fayda (Ethiopian National ID) integration and IPS (Instant Payment System) real-time interbank funds transfer rails.
- Integrated Sopra Banking Software SDK across Android and iOS platforms; executed SDK upgrades from hotfix.9 to hotfix.12 and resolved mobile TLS certificate pinning failures.
- Owned release management on Google Play Console and App Store Connect for over a year, managing submissions, compliance checks, and FCM push notifications.
Flutter Developer and Trainer
★ Mobile Commerce & Payments- Developed Mood Ride User App with cloud services, backend REST APIs, Google Maps APIs, and WebSockets.
- Integrated secure payment gateways with Chapa and Campay for in-app mobile transactions.
- Designed comprehensive UI/UX for Alibo Market using Figma, transforming wireframes into production Flutter interfaces.
- Implemented real-time geolocation tracking and driver dispatch workflows across mobile applications.
Flutter Developer
★ Dispatch Platform & Cloud Architecture- Developed Swift Delivery mobile application for Android and iOS with live route tracking and package management.
- Designed the Akababi application UI from scratch in Figma according to user-centered design principles.
- Integrated Firebase real-time database, authentication, cloud storage, and push notifications.
- Collaborated in daily agile stand-ups, sprint retrospectives, and peer code reviews in a distributed engineering team.
Flutter Developer
★ Mobile Application Delivery- Developed the Arat Killo mobile application integrated with cloud backend APIs and Google services.
- Worked closely with backend engineers to define API contracts, payload validations, and error-handling specs.
- Implemented clean state management and responsive screen scaling for various Android and iOS screen sizes.
Shipped & Production Work
Featured Projects (6)
Mobile banking apps, fintech integrations, and design systems I've contributed to.
Anbesa Plus Mobile Banking
Flagship mobile banking application for Lion International Bank S.C., powered by Sopra Banking Software (DBS platform). Supports biometric authentication, Ethiopian National ID (Fayda) onboarding, Instant Payment System (IPS), utility bill payments, QR payments, fund transfers, and transaction receipt generation.
CBE Connect
Strategic mobile banking and customer connectivity application developed at Eaglelion Systems Technology for Commercial Bank of Ethiopia (CBE), delivering seamless financial interaction, account management, and real-time updates.
Star Pay
Modern digital payment solution developed at Eaglelion Systems Technology, enabling quick peer-to-peer money transfers, merchant QR payments, airtime purchases, and automated utility settlements with real-time transaction processing.
GoSkyHy Mobile App
Feature-rich travel booking mobile application offering travelers real-time flight search, hotel reservations, interactive booking schedules, and cloud service integrations with smooth user journeys.
Swift Delivery
Delivery service mobile application connecting senders, drivers, and recipients. Built at EthioClicks, featuring real-time GPS tracking on Google Maps, dispatch management, push notifications, and Firebase backend.
Alibo Market
Comprehensive mobile marketplace developed at Qemer Technology Plc, Supporting product catalogs, shopping cart, and multi-gateway payment integration (Chapa and Campay). Features a complete custom design system created in Figma and implemented in Flutter.
What People Say
Endorsements and feedback from colleagues, engineering leaders, and clients I've collaborated with
Addisu Thomas
Director, Digital Technology Banking C&P at Lion International Bank
“Adonias demonstrated sharp analytical skills and a solid grasp of backend development. Responsible for developing and integrating APIs, writing clean code in Java, and troubleshooting financial platforms. In addition he worked on mobile client projects on Android and iOS app upgrades. A fast learner who quickly adapts to new tools and frameworks.”
Let's Connect
Get In Touch
Available for full-time software engineering roles, mobile contract projects, and fintech integrations.
Direct Email
adoniashaile1@gmail.comWhatsApp & Phone
+251 989 858 377Location & Mobility
Addis Ababa, Ethiopia
Open to Remote Globally & Relocation
Looking for a software engineer who ships production apps end-to-end?
Download my up-to-date resume or explore my code repositories on GitHub.