Senior Software Engineer - Engagement Squad

Vestiaire Collective is the leading global online marketplace for desirable pre-loved fashion. Our mission is to transform the fashion industry for a more sustainable future by empowering our community to promote the circular fashion movement. Vestiaire was founded in 2009 and is headquartered in Paris with offices in London, Berlin, New York, Singapore, Ho Chi Minh and Hong Kong and warehouses in Tourcoing (France), Crawley (UK), Hong Kong and New York.

We currently have a diverse global team of 700 employees representing more than 50 nationalities. Our values are Activism, Transparency, Dedication and Greatness and Collective. We are proud to be a BCorp.

Vestiaire Collective is looking for a Senior Software Engineer M/F/D to join the Buyer Experience collective located in Paris.

About the role ️

The mission of the Buyer Experience team is to develop innovative solutions that deliver the most engaging experience to buyers on Vestiaire Collective's platform. As a Senior Software Engineer, you will work closely with our Head of Engineering, leading the backend design and implementation scope of a squad that builds foundational capabilities. Your primary responsibility will be to execute the roadmap alongside your team, focusing on the segmentation and personalization of content. Additionally, in this role, you will play a crucial part in optimizing our event-driven architecture and microservices ecosystem that processes high-volume traffic to support both our in-app notification center and CRM communications.

What you will do

Develop technical designs and RFCs for review by our architecture and platform teams

Design and build high-performance microservice components that ensure system resilience under heavy traffic loads

Create and maintain APIs capable of efficiently processing tens of millions of requests daily

Architect and optimize our event-driven microservices to support real-time personalized communications at scale

Implement robust event publishing and consumption patterns to ensure reliable data flow between notification systems

Collaborate with product, design, and data science teams to enhance personalization capabilities and drive user engagement

Optimize the performance and reliability of our notification delivery infrastructure

Provide technical leadership in implementing best practices for scalable, maintainable systems

Who you are

Fluent in English (please send your application in English only), French is a plus.

Technical expertise: Mastery in either PHP or Go, with at least 5 years of experience in your primary language. Deep expertise in one is essential; experience in both is a plus.

Architectural vision: Strong understanding of microservices architecture, distributed systems principles, and scalable design patterns.

Proven builder: Track record of building and maintaining production systems that handle significant traffic and large data volumes.

System design and code quality: Skilled in designing scalable, maintainable systems and writing clean, well-tested, efficient code following best practices.

Problem solver: Analytical mindset with meticulous attention to detail when debugging complex distributed systems.

Product-minded engineer: Appreciation for how technical decisions impact user experience, and ability to translate business requirements into technical solutions.

Strong collaborator: Excellent communicator, able to articulate technical concepts clearly, defend your proposals with evidence, and stay open to team input.

Our Tech Stacks includes

Languages: PHP, Go

Application Framework: Symfony

Data & Messaging

Databases: MySQL/MariaDB, MongoDB

Caching: Redis, Memcached

Message Queuing & Streaming: RabbitMQ, Amazon SQS, Kafka

Infrastructure & DevOps: AWS, Docker, Terraform, Github

Documentation & Project Management: Jira, Swagger/OpenAPI

Observability : Data Dog, Grafana

What we offer

A meaningful job with an impact on the way people consume fashion and promote sustainability

The opportunity to do career-defining work in a fast-growing French-born scale up

The possibility to work as part of a globally diverse team with more than 50 nationalities

Two days to help Project - reinforcing your activist journey and volunteer for an association

Significant investment in your learning and growth

Competitive compensation and benefits package

As full member of our entrepreneurial project, you will be eligible to free shares

Surveys show that women and members of underrepresented communities only apply for a job if they meet 100% of the required conditions. Does this sound like you? If so, Vestiaire Collective encourages you to reconsider your application. We look forward to receiving your application!

Vestiaire Collective is an equal opportunities employer