LI

Backend Engineer [Freelance]

Location: Paris · Category: Engineering & Development · Seniority: Mid-Level · Posted: April 30, 2026 · Verified: Oct 4, 2026

Role Overview & Description

This freelance role builds and queries a multi-billion entry ID graph for Equativ's addressability team, ingesting massive data into high-performance key-value stores and querying user data millions of times per second. Requires 3-4 years of low-latency C# coding, expertise in Aerospike or similar KV stores, and experience with event streaming and cloud platforms. Focus is on improving graph performance.
Source & Transparency: This position was structured directly from the publicly accessible career portal of LiquidM. Details on the employer’s original job posting are authoritative. Polaris7 charges no placement fees and conducts no candidate screening.

About the company

LI

Programmatic DSP technology for advertisers, agencies and trading desks.

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