Backend Developer (.NET Core)

TL;DR

Backend Developer (.NET Core): Developing APIs, background workers, and event-driven services for a high-traffic e-commerce storefront with an accent on scalability, reliability, and distributed systems. Focus on building robust integrations, optimizing data pipelines with PostgreSQL and Cassandra, and ensuring high code quality.

Location: Hybrid in Paris, France

Company

hirify.global is a leading e-commerce platform collaborating with over 7,000 brands to provide limited-time discounted products.

What you will do

• Develop new features across APIs, background workers, importers, schedulers, and event-driven services.
• Integrate internal and external platforms using HTTP APIs, messaging systems, and data pipelines.
• Ensure high code quality through clean design, automated tests, and observability best practices.
• Contribute to the reliability, scalability, and performance of distributed production applications.
• Collaborate with Product, Data, and other engineering teams to translate requirements into technical solutions.
• Conduct technical interviews for new developer candidates joining the tech community.

Requirements

• 5+ years of experience in backend software development.
• Strong hands-on experience with C# and .NET.
• Solid experience building APIs, asynchronous processing, and distributed backend systems.
• Knowledge of relational and non-relational databases, specifically PostgreSQL and Cassandra.
• Experience with event-driven architectures and messaging platforms like Kafka or RabbitMQ.
• English: Fluent proficiency required.

Nice to have

• Experience with DDD, Clean Architecture, or modular backend design.
• Proficiency with Dapper and performance-oriented data access.
• Experience with ElasticSearch.
• Familiarity with AI-related systems such as LLMs, agents, or MCP.

Culture & Benefits

• Variable bonus.
• Dynamic and creative environment within international teams.
• Access to a wide variety of self-education courses via an e-learning platform.
• Participation in local and international meetups and conferences.
• Hybrid work model with up to 2 days at home.

Hiring process

• 30-minute HR Screen with a recruiter.
• General Technical exchange.
• Technical exchange with a Tech Lead.
• Team Interview.