Software Engineer (IAM & Core Services)

Requirements

• Strong experience in backend development using Go
• Solid understanding of distributed systems, networking, and HTTP protocols
• Very good understanding of the HTTP protocol and REST APIs
• Good knowledge of infrastructure and DevOps practices (CI/CD, containerized environments, high availability)
• Experience working on high-scale or performance-sensitive systems
• Fluent in SQL no matter how many JOIN are involved
• Familiarity with gRPC and Protobuf is a plus, but not a hard requirement
• Strong engineering mindset with a pragmatic approach to problem-solving
• Ability to simplify complex technical challenges into elegant solutions
• Autonomous and proactive in learning new technical subjects
• Strong collaboration and communication skills
• High level of rigor, especially regarding security and reliability topics

What the job involves

• Our growth is driving us to strengthen our Core Services team to support the development and scalability of critical infrastructure products related to Identity & Access Management and internal API Gateway services
• Your mission will be to design, build, and optimize highly available and secure backend services in order to strengthen Scaleway’s cloud reliability, security, and performance at scale
• We work in a collaborative and international environment where the diversity of Scalers, combined with a spirit of sharing, helps bring new projects to life every day, advancing our ambitions together
• You will be part of a team of 4 people composed of an Engineering Manager, three Software Engineers (Tech Lead included), and a Product Manager working closely together on critical products for the Scaleway ecosystem. The team is responsible for the internal API Gateway and IAM services, two high-impact platforms requiring strong expertise in distributed systems, scalability, and security
• The API Gateway currently handles more than 15,000 requests per second, while IAM authenticates over 7,000 requests per second, making reliability, performance, and low latency critical challenges for the team
• Design and develop backend services in Go for IAM and API Gateway products
• Improve the scalability, resiliency, and latency of high-traffic distributed systems
• Contribute to the architecture and evolution of critical security-related services
• Work on networking and infrastructure topics such as load balancing, routing, and traffic management
• Participate in code reviews and technical design discussions
• Collaborate closely with Product and Engineering teams to deliver reliable solutions
• Automate deployment and integration workflows through CI/CD pipelines
• Troubleshoot production issues and optimize system performance
• Contribute to technical documentation and knowledge sharing within the team
• Continuously learn and explore low-level system and networking concepts