Back-End Engineer [Freelance]

Equativ; Paris; Sur place; EUR 50 000 - 75 000; Plein temps

Résumé du poste

Equativ is seeking a skilled software engineer to join their Addressability team in Paris. The ideal candidate has 3-4 years of experience in high-performance, low-latency C# coding and is knowledgeable in Aerospike or similar technologies. Responsibilities include data ingestion at scale, querying user data efficiently, and leading design discussions. A customer-oriented mindset and passion for high-quality code are essential. Join a dynamic team dedicated to tackling complex technical challenges in an Agile environment!

Qualifications

• 3-4 years of experience in high-performance, low-latency C# coding.
• Experience with event streaming (Kafka) and cloud platforms is a plus.
• Fluent verbal and written English.

Responsabilités

• Ingest massive amounts of data in key-value stores.
• Query user data millions of times per second.
• Lead design discussions and mentor junior developers.

Connaissances

High-performance C# coding

Expertise with Aerospike

Event streaming (Kafka)

Docker

Kubernetes

GCP (Google Cloud Platform)

Description du poste

About the team

At Equativ, we’re on a mission to develop advertising technologies that empower our customers to reach their digital business goals. This means that we rely on massively scalable, widely distributed, highly available, and efficient software systems; the platform deals with over 3 million requests per second (+250 billion/day) managed by 3,000 servers with less than 250ms response time.

Our innovation team based in Paris, Nantes, Bordeaux, Limoges, Krakow and Berlin is composed of 150+ straightforward and energetic engineers working in an Agile environment and ready to tackle the most complex technical challenges.

Your mission

You will join our Addressability team distributed in multiple locations. You will be onboarded in a multi‑expertise feature team of back‑end developers and Data Engineers, with the mission to build and query a multi‑billion‑entry Id Graph, plug third‑party data providers, and provide customers and business teams with advanced targeting and reporting features.

What you’ll do

• Ingestion of massive amounts of data in high‑performance key‑value stores
• Query user data millions of times per second with a response time of a few milliseconds
• Improve our graph by making it sharper, faster
• Design trade‑offs (feature vs performance)
• Provide business support to external partners and customers

About you

• 3‑4 years of seniority in high‑performance, low‑latency C# coding
• Expertise with Aerospike or an equivalent high‑performance KV store
• Experience with event streaming (Kafka), Go, PHP, Docker, Kubernetes, and cloud platforms (ideally GCP) is a big plus
• Ability to lead design discussions and mentor others
• Customer‑oriented approach: you deliver clean and usable solutions for customers (and you know that customers hate bugs!)
• Proficient in verbal and written English
• Passion for writing high‑quality, maintainable code following Software Craftsmanship or Continuous Delivery
• Entrepreneurial spirit and ability to identify opportunities for improvement
• Personal projects with code sharing— we’re curious about your art!