Senior Software Engineer • Mobile & Full-Stack Developer

Building Scalable Digital Products That Make an Impact.

I'm Ermias Kefelegn Gossem, a Senior Software Engineer specializing in mobile and cross-platform development, fintech ecosystems, and scalable digital products. With 8+ years of experience, I've helped build and deploy production applications across Ethiopia and international markets, working with distributed engineering teams to turn complex ideas into reliable, user-focused software.

Ermias Kefelegn Gossem profile photo
Product engineering
role Senior Mobile Engineer active
stack Flutter · Kotlin · Node · Python
focus Fintech · Super App · Trust
impact 12+ apps launched live

About

Engineering products with product thinking and technical depth.

I am a software engineer with over eight years of experience building and delivering production-grade digital products across fintech, transportation, e-commerce, and enterprise environments. My work focuses on developing scalable mobile applications, designing maintainable architectures, integrating complex backend services, and creating seamless digital experiences.

Throughout my career, I have worked with engineering and product teams across different countries and time zones, taking ownership of features and products from initial requirements through development, testing, deployment, and continuous improvement. I have contributed to digital financial services at Safaricom, multi-service Super Apps, nationwide public-sector platforms, and international fitness technology products.

What I bring

  • Fintech & digital wallets
  • Cross-platform mobile delivery
  • Scalable architecture
  • Remote international teams
  • Product ownership
  • Production deployment
8+
Years of software development experience
12+
Production applications delivered
30%
Improvement in application load time at OoNt
6+
Major organizations represented across my career

Experience

Senior engineering roles across fintech, mobility, public services, and product teams.

Coopah
Frontend Developer (Flutter)
London, United Kingdom
March 2026 – August 2026

Contributed to the development of a modern sports and fitness application, owning product features across Flutter mobile and web platforms. Translated product requirements and Figma designs into scalable, responsive experiences while developing reusable UI components and maintainable Flutter architecture.

Flutter Flagsmith Sentry Claude Code Cursor
Safaricom Telecommunications Ethiopia PLC
Senior Mobile Application Developer
Addis Ababa, Ethiopia
December 2024 – April 2026

Led the development of M-PESA Lehulum, a lightweight and telco-agnostic digital financial services application designed to make M-PESA accessible to customers using any Ethiopian SIM card. Designed and implemented an optimized Flutter architecture focused on low data consumption, reduced application footprint, and reliable performance on low-end devices.

Fintech Flutter REST APIs Performance optimization
OoNt Services
Senior Mobile Application Developer
London, United Kingdom
June 2023 – December 2024
Full-time, Remote

Led mobile application development for a multi-service Super App combining e-commerce, grocery delivery, ride-hailing, and logistics. Designed and delivered scalable Flutter architecture using Firebase, GraphQL, and Cloud Functions, while driving a 30% improvement in application loading performance through architectural refactoring and widget optimization.

Super App Firebase GraphQL Cloud Functions
iDrive Transport Services P.L.C
Senior Mobile Application Developer
Addis Ababa, Ethiopia
August 2022 – November 2023
Part-time, Remote

Developed and maintained Flutter-based ride-hailing and food delivery applications supporting real-time interactions between drivers and customers. Integrated GraphQL and Firebase to enable reliable ride tracking, order fulfillment, and real-time updates.

Ride-hailing Food delivery Realtime systems GraphQL
Ethiopian Labor Market Information System (E-LMIS)
Senior Mobile Application Developer
Addis Ababa, Ethiopia
May 2022 – June 2023

Contributed to the development of nationwide labor market applications supporting job seekers, employers, and government institutions across Ethiopia. Designed scalable Flutter application architecture integrated with GraphQL, Hasura, and Cloud Firestore, implementing offline-first capabilities for reliable access in low-connectivity areas.

Public-sector apps Offline-first Flutter Hasura
RCNDC Consultancy
Software Developer
Addis Ababa, Ethiopia
June 2020 – May 2022

Developed mobile and web applications using Flutter, React.js, and Node.js for enterprise clients. Led a small development team, conducted code reviews, mentored junior developers, and managed cloud deployments in VPS environments.

React.js Node.js Team leadership Code reviews

Featured work

Production applications built for real users, real services, and real pressure.

M-PESA Lehulum

FinTech

A lightweight, telco-agnostic digital financial services application making M-PESA available to customers using any Ethiopian mobile network while prioritizing low data consumption and performance on low-end Android devices.

Flutter Dart REST APIs Clean Architecture

M-PESA Safaricom Ethiopia

Digital Financial Services

A nationwide digital financial services application enabling customers to send money, pay bills, purchase airtime, authenticate securely, and complete offline transactions in a production fintech ecosystem built for scale.

Flutter Kotlin Android iOS

OoNt — Your All-in-One App

Super App

A multi-service lifestyle Super App combining grocery delivery, e-commerce, ride-hailing, and logistics into a unified customer experience, supported by modular application architecture and backend integrations built for performance.

Flutter Firebase GraphQL Cloud Functions

Skills

Focused engineering capability across mobile, architecture, backend, and delivery.

Mobile

  • Flutter
  • Dart
  • Kotlin
  • Jetpack Compose
  • Swift

Architecture

  • Clean Architecture
  • BLoC
  • Riverpod
  • REST APIs
  • GraphQL

Backend & Data

  • Python
  • Django REST
  • Node.js
  • PostgreSQL
  • Firebase

DevOps & Tools

  • Git
  • GitHub Actions
  • Codemagic
  • Docker
  • Android Studio

Leadership

  • Code Reviews
  • Mentoring
  • Agile/Scrum
  • Remote collaboration
  • Technical ownership

Education

Academic foundation supporting technology leadership and delivery.

Master of Project Management

ACT American College of Technology

Addis Ababa, Ethiopia
November 2023 – November 2025
Bachelor of Science in Computer Science and Engineering

Adama Science and Technology University

Adama, Ethiopia
September 2015 – December 2020

Modern engineering

Modern engineering, enhanced by AI.

I actively integrate AI-powered development tools into my engineering workflow to accelerate implementation, improve code exploration, support debugging, and streamline refactoring. Using tools such as Claude Code and Cursor, I apply AI-assisted and specification-driven workflows while maintaining engineering judgment, validating generated solutions, and ensuring production quality.

Contact

Have an interesting product to build? Let’s talk.

I’m always interested in connecting with ambitious teams, technology companies, and people building meaningful digital products. Whether you’re looking for an experienced mobile engineer, a cross-platform developer, or someone who can help bring a complex digital product to life, I’d be happy to connect.

Core strengths

  • Senior mobile engineering
  • Fintech and payments
  • Full-stack product thinking
  • Cross-platform delivery
  • Remote team collaboration
  • Production maintenance