Senior Backend Engineer (Core Components)

TL;DR

Senior Backend Engineer (Core Components): Building and owning critical internal infrastructure including administration BFF, async task orchestration, feature flipping system, and operational logging with an accent on security, scalability, and developer experience. Focus on modernizing legacy systems, designing pragmatic architectures, and enabling experimentation across product teams.

Fully remote (France only) or Paris-based

Company

Video platform with professional hosting and advertising solutions, 400 people across France, New York, Singapore, Milan, Madrid, and London.

What you will do

• Own administration BFF covering security, traceability, historization, and API design for internal operations
• Evolve async task orchestration platform for microservices reliability and scalability
• Scale feature flipping system to support experimentation and safe rollouts
• Drive modernization of legacy architectures and shape technical roadmap with stakeholders
• Leverage AI tools for development, testing, and documentation
• Provide guidance on APIs, orchestration, logging, and feature management to other teams

Requirements

• 5+ years backend engineering at scale
• Polyglot experience (Python, Go, PHP, etc.), strong API design, auth, distributed systems, async processing
• AI-assisted development workflows
• Database expertise (relational/NoSQL), cloud/infra (AWS/GCP, Docker/K8s)
• Architectural judgment for legacy systems
• Ownership, communication skills
• Fluent in French (Mandatory)

Nice to have

• Legacy system migration/modernization
• Audit logging, compliance architectures
• High-throughput systems
• Go experience
• English proficiency

Culture & Benefits

• No on-call duties
• Autonomous small team with ownership
• Equal opportunity employer, inclusive hiring

Hiring process

• HR interview (30 min)
• Manager interview (45 min) with scenarios
• Technical case study (1 hour take-home + presentation)
• Leadership interview (1 hour)