Senior Backend Engineer: Data Pipelines & AI (TS/ClickHouse)

MentionLab

Brussel

Hybride

EUR 85 000 - 120 000

Plein temps

Il y a 8 jours
Générateur de candidature

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Avantages offerts par ce poste

Car / mobility budget
Insurance
Dynamic workplace
Autonomy

Résumé du poste

MentionLab, headquartered in Brussels with a global footprint, is hiring a Senior Backend Engineer to drive our data infrastructure. You’ll design pipelines, optimize analytics, and own key parts of the product from day one, working with TypeScript, SQL and Rust, in a hybrid Belgium-based setting.

You’ll collaborate across teams to deliver fast, reliable data platforms and APIs powering AI-driven insights for customers and partners.

Qualifications

  • 5+ years of software engineering experience
  • Strong data modelling, query optimisation and performance tuning
  • Solid knowledge of TypeScript and SQL
  • Comfortable across analytical and transactional databases
  • Experience with AI-assisted development tools (Copilot, Cursor, Claude Code, or similar)

Responsabilités

  • Own data architecture from ingestion pipelines to ClickHouse data models
  • Design and optimise analytical queries and data models as volumes grow
  • Build and maintain backend APIs that serve insights
  • Keep pipelines reliable and performant in production
  • Work mainly in TypeScript and SQL (with Rust) for performance-critical processing
  • Raise engineering bar through code reviews and mentoring
  • Wear multiple hats in a startup environment

Connaissances

5+ years experience
Data modelling
Query optimisation
TypeScript
SQL
AI-assisted tools

Outils

NestJS
PostgreSQL
Redis
ClickHouse
Rust
Knex
MikroORM

Description du poste

MentionLab, headquartered in Brussels with a global footprint, is hiring a Senior Backend Engineer to drive our data infrastructure. You’ll design pipelines, optimize analytics, and own key parts of the product from day one, working with TypeScript, SQL and Rust, in a hybrid Belgium-based setting.

You’ll collaborate across teams to deliver fast, reliable data platforms and APIs powering AI-driven insights for customers and partners.

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