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Accor

Senior Java Backend Developer (Loyalty & Partnerships) F/M/X

Hybrid

Paris, France

Senior

Full Time

05-02-2026

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Skills

Communication Java TypeScript DevOps Monitoring Training Architecture Autonomy node.js Back-end Development AWS Agile Spring Spring Boot Kafka Microservices

Job Specifications

Company Description

Accor Tech & Digital is the power engine of Accor technology, digital business and transformation. Our 5,000 talents are committed to deliver the best tech and digital experiences to our guests, hotels and staff across 110 countries and to shape the future of hospitality. 

Accor Tech & Digital, jobs in the tech field where intelligence is above all human! 

Job Description

Accor Tech & Digital is the innovation and technological transformation lab of the world leader in hospitality.

Our teams, known as Heartists®, bring together the best of hospitality with the best of tech and digital. Our ambition is to provide our customers with personalized, memorable, and sustainable experiences.

Here, we create new ways to travel within each of our 5,500 hotels, connecting closely with our 100 million clients in 110 countries.

Here, we are at the heart of an incredible playground for technological transition and the design of digital products and services for our customers and hotel teams.

Here, your scope will know no boundaries;

So join us and dare to make an impact on the world!

Here is where your greatest challenge awaits you: 

Within the Engineering team, you will join the API Customer, Loyalty & Messaging team, responsible for a strategic middleware layer that orchestrates all flows related to customer data, bookings, loyalty, and communications.

This team plays a central role in the IT landscape, acting as an interface between core business systems and consumer-facing channels. It works on high-impact business topics, closely tied to the customer experience.

You will report to the Tech Lead and collaborate closely with other Backend Developers, Product Owners, and business teams.

Your Mission

As a Senior Java Backend Developer, you will be responsible for:

Building APIs at the core of booking and order journeys
Developing and evolving scalable back-end services and APIs supporting critical customer journeys
Ensuring quality through testing, performance optimization, and maintainability in production
Structuring and exposing enterprise customer loyalty data
Designing robust APIs for B2B data aggregation and access
Working on data modeling and integration with existing systems
Contributing to the migration to our new central reservation system
Adapting and interfacing services with a new event-driven architecture
Ensuring service continuity and reliability of data flows
Evolving authentication mechanisms and account management
Implementing and improving secure authentication processes
Optimizing code performance, resilience, and quality through continuous improvement
Developing multi-channel messaging services (app, SMS, email)
Designing integrations with multiple providers and managing asynchronous flows
Building reliable services for notification and authentication journeys
Operating in a modern, stimulating technical environment
Working on API and microservices architectures in an agile context
Collaborating with cross-functional teams and contributing to technical decisions

Qualifications

And you?

Qualifications

Degree in Computer Science (Engineering school, Master’s, or equivalent)
Proven experience (6+ years) in Java back-end development in high-traffic environments
Experience with critical, customer-focused products and business-impact projects

Technical Skills

Strong expertise in Java and Spring Boot for back-end and API development
Experience with Kafka and asynchronous communication architectures
Mastery of queuing and streaming concepts
Ability to design and operate large-scale event-driven systems (hundreds of millions of requests per day)
Good understanding of cloud and distributed architectures (event-driven)
AWS experience highly appreciated (infrastructure management)
Infra/production expertise or strong interest is highly valued
Ability to design, expose, and consume robust and performant APIs
Awareness of scalability, resilience, and observability in production
Interest in Node.js / TypeScript appreciated (complementary services, integrations, tooling)
Run-oriented DevOps culture: hands-on experience managing production (incidents, monitoring, performance)

Soft Skills

Analytical mindset and ability to understand complex systems
Passion for quality, reliability, and continuous improvement
Ability to collaborate closely with product and business teams
Autonomy, technical curiosity, and proactive attitude
Comfort working in an agile, dynamic, and fast-evolving environment

Additional Information

Accor dares to impact: 

The world:
Accor is committed to the world around us, with a strong employer culture focused on the development of our 300,000 talents. 
We adopt a continuous improvement approach to reduce the impact of digital on the environment across all our projects.
Your career:  
We enable all our employees to manage their work-life balance and offer them the means to shape their work environment according to their preferences. 
Training and career

About the Company

We are Accor We are more than 290,000 hospitality experts placing people at the heart of what we do, creating emotion for our guests, and nurturing passion for service and achievement beyond limits. Building on the strength of our teams and of our fully integrated ecosystem of leading brands, personalized services & expert solutions, we break new ground to reimagine hospitality and inspire new ways to experience the world. We are dedicated to suit all desires and needs, and reinvent the guest experience every day with our ... Know more