Senior Software Engineer

Join us at Orange Business!
We are a network and digital integrator that understands the entire value chain of the digital world, freeing our customers to focus on the strategic initiatives that shape their business.
Every day, you will collaborate with a team dedicated to providing consistent, sustainable global solutions, no matter where our customers operate. With over 30,000 employees across Asia, the Americas, Africa, and Europe, we offer a dynamic environment to develop and perfect your skills in a field filled with exciting challenges and opportunities.

We are looking for a Senior Software Engineer to join the Integration Build team at Orange Business, contributing to the design, development, and delivery of our integration platforms. The role focuses primarily on our in-house Business Layer, a Node.js-based system for aggregating, transforming, and exposing business-critical data, and will extend to include future development and operations on Orange’s new cloud-native iPaaS (Integration Platform as a Service).

This is a strategic engineering role within Orange Business IT (OB IT), aligned with two key transformation programs:

1. API for Business Program – delivering secure, real-time customer APIs via a central Logic API Layer
2. The New Integration Platform (iPaaS) – enabling modular and scalable data orchestration across all OB systems

You will work in Agile teams alongside Business Analysts, Product Owners, Architects, and DevOps to ensure robust, maintainable, and scalable integration solutions that power Orange’s evolving digital ecosystem.

 

Key Responsibilities

• Design, develop, and maintain services within the Business Layer integration platform using Node.js, Redis, and MongoDB
• Build reusable modules and APIs that ensure smooth, real-time system interoperability
• Contribute to the development and deployment of Orange’s new iPaaS, supporting cross-domain integrations between front-office (e.g., eShop, eCare) and back-office (e.g., OSS, billing) systems
• Collaborate with architects on the evolution and modernization of integration platforms using technologies such as Golang, NATS, and event-driven architecture
• Ensure scalability, observability, and security in all platform components
• Participate in CI/CD automation and deployment using GitLab, Docker, Kubernetes, and Helm
• Support sprint planning, estimation, and delivery in an Agile/SAFe environment
• Provide technical mentorship to junior developers and contribute to engineering best practices

Technical Skills

• Proficiency in Node.js backend development, ideally within integration or middleware environments
• Experience with Redis, MongoDB, REST APIs, and microservices
• Familiarity with containerization and orchestration tools: Docker, Kubernetes, Helm
• Experience with CI/CD pipelines using GitLab and scripting with Bash on Linux systems
• Exposure to Golang, NATS, or event-streaming platforms is a strong advantage
• Experience in API testing and integration validation

 

 Functional Skills

• Ability to translate integration use cases into technical designs and code
• Collaborative mindset, able to work effectively with BAs, architects, and product teams
• Strong debugging, troubleshooting, and performance optimization skills
• Comfortable navigating large-scale, enterprise IT ecosystems
• Enthusiasm for learning new platforms and contributing to cloud-native architectures like iPaaS

 

 Qualifications & Experience

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or equivalent
• Minimum 5+ years of experience in backend software development, ideally with integration projects
• Proven track record in building and deploying scalable services and APIs
• Familiarity with enterprise integration patterns and middleware platforms
• Fluent in English (French is a plus)

You bring a can-do attitude, tackle challenges head-on and challenge the status quo with new and innovative ideas.

 

• Global Opportunities: Work in multi-national teams with opportunity to collaborate with colleagues and customers from all over the world. • Flexible Work Environment: Flexible working hours and possibility to combine work from office and home (hybrid ways of working). • Professional Development: training programs and upskilling/re-skilling opportunities. • Career Growth: Internal growth and mobility opportunities within Orange. • Caring and Daring Culture: Health and well-being programs and benefits, diversity & inclusion initiatives, CSR and employee connect events. • Reward Programs: Employee Referral Program, Change Maker Awards.

 

Regardless of your age, gender identity, race, ethnic origin, religion/belief, sexual orientation, marital status, neurotype, disability, veteran status or appearance, we encourage diversity within our teams because it is a strength for the collective and a vector of innovation. Orange Group is a disabled-friendly company and equal opportunity employer: don't hesitate to tell us about your specific needs.