Leonar Tech Stack

AI-powered recruiting platform unifying sourcing, enrichment, outreach, and ATS

Software Development Paris 2–10 employees Founded 2022 Privately Held

Leonar consolidates fragmented recruiting workflows—sourcing, data enrichment, multi-channel outreach, and pipeline management—into a single platform backed by a 870M+ profile database. The tech stack (Python, Django, React, PostgreSQL, Snowflake, Apache Airflow, dbt) reveals a data-intensive architecture designed to power AI ranking and automation at scale; adoption of Temporal signals a shift toward more sophisticated async job orchestration as the platform grows. Hiring is heavily weighted toward engineering (27 of 77 open roles) and sales (19), with a notable leadership gap—only 1 manager and 1 director listed—suggesting rapid scaling under a lean operational structure.

Tech Stack 95 technologies

Core StackSQL Server Salesforce Slack Apache Airflow dbt Apache Spark Airbyte PostgreSQL Snowflake Python Django React Angular Kotlin React Native GitHub AWS CloudFront Docker Node.js TypeScript Express SharePoint Teams Aircall Notion SQL Backbone.js AWS ECS CRM+63 more

AdoptingTemporal

ReplacingExcel

What Leonar Is Building

◆Challenges

Performance optimization
Improving lead conversion
Expanding enterprise sales in uk
Acquiring industrial clients
Building new agency from scratch
Scaling operations and market reach
Gaining efficiency through reorganization
Expanding market share in île-de-france
Process automation
Migrating to back-end orchestration

▲Active Projects

Ai integration
Wms implementation
Technical overhaul
Saas platform development
Group observability center
Process automation services
New product launch
Recruitment tool improvement
Recruitment team structuring
Data lake strategy

Hiring Activity

Steady75 roles · 30 in 30d

Department

Engineering

Sales

Marketing

Data

Product

Executive

Ops

Seniority

Senior

Mid

Lead

Junior

C-Level

Intern

Director

Manager

Notable leadership hires: Chief Technology Officer, Tech Lead, Head of operations, Head of Product, Growth Head

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About Leonar

Leonar is an AI-powered recruiting platform built to replace the typical stack of LinkedIn scrapers, ATS tools, and manual sourcing. Founded in 2022 and based in Paris, the company operates a two-sided product: recruiters and talent acquisition teams access a proprietary profile database of 870M+ candidates, run automated multi-channel sequences (LinkedIn, email, WhatsApp), and manage pipeline and CRM through a single interface. The platform targets mid-market and enterprise recruiting teams trying to reduce tool sprawl and administrative overhead. With 77 active job postings across engineering, sales, and go-to-market functions, and open hiring across France, the US, and the UK, Leonar is in active growth mode.

HeadquartersParis

Company Size2–10 employees

Founded2022

Hiring MarketsFrance, United States, United Kingdom

Frequently Asked Questions

What tech stack does Leonar use?

Core: Python, Django, React, PostgreSQL, Snowflake, Apache Airflow, dbt. Infrastructure: AWS, Docker, ECS, CloudFront. Data pipeline: Airbyte, Apache Spark, SQL Server. Comms: Slack, Teams, Aircall. Adopting Temporal for async orchestration.

What is Leonar working on?

AI integration, technical overhaul, SaaS platform development, recruitment tool improvements, data lake strategy, and process automation. Notable pain points include performance optimization and expanding enterprise sales in the UK.