Senior Backend Programmer | Programmeur·euse Backend Sénior·e

Behaviour is looking for a Senior Backend Programmer to join our internal R&D team and help build the tools and services that production teams rely on every single day. In this role, you'll design systems that reduce time-to-production, empower developers across the studio, and run reliably at scale. The kind of behind-the-scenes work that quietly makes everything else possible. 

If you enjoy solving backend problems, care deeply about clean architecture and want your code to have a studio-wide impact, we'd love to hear from you. 

In this role you will :

• Design, build, and maintain advanced backend services and operational systems; 

• Define technical specifications and requirements before developing new features and services; 

• Diagnose and resolve issues to improve application stability, code quality, and CI/CD pipeline robustness; 

• Collaborate closely with other developers to deliver scalable, production-grade services; 

• Develop, execute, and analyze functional to ensure performance and reliability. 

What we are looking for :

• Minimum of 5 years of backend development experience in Python; 

• Strong, hands-on expertise in the AWS ecosystem, including services like Lambda, ECS, API Gateway, RDS, DynamoDB, S3, and CloudWatch; 

• Solid grasp of REST APIs, WebSockets, and modern software architecture principles; 

• Experience with Linux environments, server performance optimization, and secure client-server development; 

• Experience with CI/CD practices and tools such as GitLab Pipelines, Jenkins, or GitHub Actions; 

• Experience with Infrastructure as Code tools like Terraform, Pulumi, or CDK; 


• Knowledge of relational and NoSQL databases, including data modeling and performance considerations. 

Dans ce rôle, tu devras :

• Concevoir, bâtir et maintenir des services backend avancés ainsi que des systèmes opérationnels;


• Définir les spécifications techniques et les exigences avant de développer de nouvelles fonctionnalités et services;


• Diagnostiquer et résoudre des problèmes afin d'améliorer la stabilité des applications, la qualité du code et la robustesse des pipelines CI/CD;


• Collaborer étroitement avec d'autres développeurs afin de livrer des services évolutifs, de qualité production;


• Développer, exécuter et analyser des tests fonctionnels afin d'assurer la performance et la fiabilité.

Ce que nous recherchons :

• Minimum de 5 ans d'expérience en développement backend en Python;


• Expertise solide et pratique de l'écosystème AWS, incluant des services comme Lambda, ECS, API Gateway, RDS, DynamoDB, S3 et CloudWatch;


• Solide compréhension des API REST, des WebSockets et des principes modernes d'architecture logicielle;


• Expérience avec les environnements Linux, l'optimisation de la performance des serveurs et le développement sécurisé client-serveur;


• Expérience avec les pratiques et outils CI/CD tels que GitLab Pipelines, Jenkins ou GitHub Actions;


• Expérience avec des outils d'infrastructure as code tels que Terraform, Pulumi ou CDK;


• Connaissance des bases de données relationnelles et NoSQL, incluant la modélisation des données et les considérations de performance.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.