Lead Architect - API

Xebia; Paris; Hybride; EUR 70 000 - 90 000; Plein temps

Résumé du poste

Xebia, based in Paris, is seeking a Lead Enterprise API Architect to design and develop enterprise-level API architectures. The role involves leading the development of API strategies, ensuring high-quality performance, security, and seamless integration across systems.

The ideal candidate should have substantial experience in API architecture, microservices, and a strong understanding of API security standards. This position requires hybrid work from Paris, with expertise in both English and French highly regarded.

Qualifications

• Proven experience as a Lead or Enterprise API Architect in large-scale environments.
• Strong hands-on experience designing and delivering enterprise-grade API architectures.
• Deep expertise in REST APIs and service-to-service communication patterns.

Responsabilités

• Lead the design and development of API architecture strategies.
• Design secure and high-performance APIs to enable system integration.
• Monitor API performance and implement optimization strategies.

Connaissances

API architecture

REST APIs

Microservices

API security standards

Stakeholder management

Fluent in English

Fluent in French

Outils

API management platforms (e.g. Apigee)

Cloud services (AWS, Azure, GCP)

Description du poste

Xebia is a global AI-first, digital transformation, and engineering partner. With over 25 years of experience and a team of 5,000 professionals across 16 countries, we help organizations design and build scalable products, platforms, and data-driven solutions.

We specialize in Artificial Intelligence, Data and Cloud, Intelligent Automation, and Digital Products, combining deep technical expertise with a strong focus on engineering excellence and a people-first culture.

In the CEE region, we are a team of nearly 1,000 experts delivering modern applications, data platforms, and AI solutions for clients such as McLaren, Aviva, Deloitte, Spotify, Disney, ING, UPS, Tesco, Truecaller, AllSaints, Volotea, Schmitz Cargobull, Allegro, InPost, and many more. We work with leading technologies including AWS, Azure, GCP, Databricks, and Snowflake, and combine strong engineering culture with a consulting mindset and a continuous focus on growth and knowledge sharing.

Responsibilities

• Leading the design, development, and governance of the enterprise API architecture strategy.
• Designing scalable, secure, and high-performance APIs that enable integration across systems, applications, and third‑party services.
• Defining and implementing API lifecycle management practices, including design, development, deployment, versioning, and retirement.
• Building robust API services and supporting microservices‑based architectures from conception to production.
• Designing domain‑driven data models and API contracts to ensure logical consistency and efficient data access across systems.
• Defining and enforcing API security standards, including authentication, authorization, encryption, and access control.
• Developing integration strategies that ensure seamless connectivity between internal platforms and external partners.
• Monitoring API performance, reliability, and scalability, implementing optimization strategies to ensure high availability and low latency.
• Establishing and maintaining API documentation standards and developer experience guidelines.
• Leading and mentoring API engineers, fostering best practices, innovation, and technical excellence across teams.

Qualifications

• Proven experience as a Lead or Enterprise API Architect in large‑scale, complex environments.
• Strong hands‑on experience designing and delivering enterprise‑grade API architectures.
• Deep expertise in REST APIs and service‑to‑service communication patterns.
• Solid experience with microservices architectures and API gateway patterns.
• Strong knowledge of API lifecycle management, versioning strategies, and backward compatibility principles.
• Hands‑on experience with API security standards, including OAuth 2.0, OpenID Connect, TLS, and encryption practices.
• Experience designing integration architectures across multiple systems and third‑party providers.
• Strong understanding of distributed systems, event‑driven architecture, and event‑based APIs (e.g. Kafka).
• Experience ensuring high availability, performance optimization, and low‑latency API systems.
• Solid knowledge of API documentation standards such as OpenAPI/Swagger.
• Strong communication and stakeholder management skills, with the ability to work across technical and business teams.
• Fluent English and French language skills (written and spoken).

Hybrid work from Paris is required.

Nice to Have

• Experience with API management platforms such as Apigee, Kong, or Azure API Management.
• Knowledge of developer portals and API onboarding experiences.
• Experience designing asynchronous and event‑driven APIs using streaming technologies.
• Strong observability experience, including distributed tracing, monitoring, and SLA management.
• Experience working within enterprise architecture governance or design authority models.
• Cloud‑native experience with AWS, Azure, or GCP API services and Kubernetes environments.
• Experience with rate limiting, throttling, and traffic management strategies.
• Familiarity with GraphQL, gRPC, or other high‑performance API protocols.
• Exposure to API monetization strategies and public API ecosystems.
• Knowledge of zero‑trust security models and advanced API threat protection.
• Experience with multi‑region API deployments and legacy system modernization via API layers.
• Understanding of schema evolution and contract‑first API design approaches.
• Awareness of emerging API trends and best practices.