Software Engineer GO - IAM & Core Services

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

• 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

Hybrid work: We offer up to 3 days of remote work per week.

Offices: Our offices are spacious, dynamic workspaces with bold design, conveniently located near public transport. Most of our offices feature outdoor spaces (terraces) and bike parking facilities.

Dining: Our chef provides a healthy meal service at the headquarters, and breakfast is available across all our sites year-round. Scalers working from regional sites enjoy a Swile card for lunches.

Well-being commitments: Whether it’s access to a gym, daycare places, or discounted services for caring services, Scaleway is committed to supporting Scalers in maintaining a balanced life.

International environment: With dozens of nationalities, Scaleway offers a stimulating environment where English is as widely spoken as French.

Career & Mobility: Our managers value internal mobility, and opportunities to transition to other entities within the Iliad Group are accessible to all Scalers.

• HR screening interview (30 min)
• Interview with the Engineering Manager to understand your background, mindset, and approach to the role (30 min)
• Technical development assessment focused on code review and software engineering practices (1h)
• Technical architecture discussion to validate your distributed systems and infrastructure expertise (1h)