Senior Software Developer – Railway Ticketing System (Web & Mobile)

Company Description

Do you want to shape the world of tomorrow and work on innovative projects? Then you're a good fit for us! We are a global engineering group with 15,000 employees and 140 locations worldwide. With our services, we are driving the topics of energy efficiency, climate protection and decarbonization and developing tech industries into new dimensions.

The world of SEGULA Technologies Experts revolves around industries such as automotive, software, energy and life sciences. As an independent player, we support OEMs and suppliers with personal engineering services. Take advantage of new opportunities and take on exciting tasks and attractive positions with direct customer assignment.

Location

South Africa (Remote possible)

Contract Type

3-Month Contract (Extendable)

Industry

Railway / Transportation / Mobility

Start Date

Immediate

Project Overview

We are supporting a strategic railway project focused on the development and enhancement of a digital ticketing system.

We are seeking a Senior Software Developer with strong expertise in modern web and mobile technologies to contribute to frontend/backend development, authentication integration, payment gateway implementation, and GIS-based functionalities.

This is a 3-month contract with strong potential for extension based on project requirements.

Key Responsibilities

• Web Development

  • Develop and maintain web applications using React / Next.js
  • Build scalable applications using TypeScript 5
  • Implement containerized environments using Docker / Docker Compose
  • Develop and maintain unit testing using Jest
  • Ensure high performance, security, and maintainability

• Authentication & Security

  • Implement authentication solutions using Keycloak
  • Integrate OIDC (OpenID Connect) protocols
  • Ensure secure identity and access management

• Payment Gateway Integration

  • Integrate and manage MPGS (Mastercard Payment Gateway Services)
  • Ensure secure transaction processing and payment validation
  • Support testing and troubleshooting of payment flows

• GIS & Geocoding

  • Implement map-based features using:
    • Mapbox
    • OpenStreetMap
  • Manage geolocation and geocoding functionalities

• Mobile Application Development

  • Develop cross-platform mobile applications using Flutter / Dart
  • Deliver iOS and Android applications
  • Manage CI/CD pipelines using EAS Build
  • Ensure performance optimization and release readiness

Qualifications

Mandatory Skills

• Strong hands-on experience with:
  • React / Next.js
  • TypeScript (v5 preferred)
  • Docker / Docker Compose
  • Jest
  • Keycloak / OIDC
  • MPGS payment gateway
  • Mapbox or OpenStreetMap
  • Flutter / Dart
  • CI/CD pipelines (EAS Build)

Preferred

• Experience in Railway / Transportation / Ticketing systems
• Experience in secure payment platforms
• Agile/Scrum experience

Additional Information

• Senior Software Developer (minimum 5+ years experience)
• Proven delivery of production-grade web & mobile applications
• Strong understanding of scalable architecture
• Ability to work independently
• Based in South Africa (remote work possible)
• Immediate or short notice preferred

Please note that only shortlisted candidates will be contacted.