cover image
Leonar

Leonar

www.leonar.app

25 Jobs

2 Employees

About the Company

Leonar helps talent acquisition teams hire with efficiency and speed.

With Leonar, teams can automate and personalize candidate communication, unify all recruiting touchpoints into a single system, and get usable data across the entire hiring process.

Listed Jobs

Company background Company brand
Company Name
Leonar
Job Title
Head of Engineering - fintech
Job Description
**Job Title:** Head of Engineering – FinTech **Role Summary:** Lead and scale a cross‑functional engineering team that designs, builds, and maintains Python‑based data and analytics platforms for institutional financial clients. Drive technical strategy, mentor staff, and ensure high standards of code quality, security, and regulatory compliance while optimizing cloud‑based data workflows. **Expectations:** - Deliver robust, scalable solutions that meet stringent financial data requirements. - Foster a culture of continuous learning, code ownership, and high performance. - Align engineering output with product goals and client expectations. **Key Responsibilities:** - Mentor and develop engineering talent, manage performance, and align team goals. - Architect, develop, test, and maintain Python applications for data platforms. - Design innovative financial analytics and data‑management solutions for institutional clients. - Collaborate on data integration, security, and performance, ensuring privacy and regulatory compliance. - Automate and optimize data processing pipelines on AWS cloud infrastructure. - Participate in technical discussions to create high‑value financial market solutions. **Required Skills:** - Extensive experience in Python development and solid coding practices. - Proficient in SQL and working within cloud environments, preferably AWS. - Knowledge of data visualization tools (e.g., Tableau). - Strong analytical, rigorous, and autonomous working style. - Good verbal and written English; proficiency in French preferred. **Required Education & Certifications:** - Graduate from a top engineering school or university with a focus on Computer Science, Data Science, or Quantitative Finance. - Relevant certifications in AWS or data engineering (desirable).
Nice, France
On site
23-12-2025
Company background Company brand
Company Name
Leonar
Job Title
Consultant(e) Data Scientist / AI Engineer
Job Description
**Job Title** Data Scientist / AI Engineer Consultant **Role Summary** Deliver end‑to‑end data and AI consulting services for diverse industry clients. Lead the full project lifecycle from data scoping and collection to model development, deployment, and monitoring. Build and integrate advanced ML/LLM models and AI agents, and develop robust data pipelines. Communicate insights and business value to stakeholders and support continuous R&D and knowledge sharing. **Expectations** - Execute projects across multiple sectors, delivering innovative solutions (ML forecasts, AI agents, monitoring tools). - Operate autonomously, with clear documentation, proactive communication, and initiative. - Showcase measurable impact and business value of delivered solutions. **Key Responsibilities** - Define and scope data collection requirements; clean, preprocess, and transform data. - Develop ML/DL models and LLM‑based solutions tailored to client problems. - Integrate AI agents (autonomous agents, LLM orchestrators, intelligent action chains) into operational contexts (automation, copilots, RAG). - Build and maintain data pipelines: ingestion, preprocessing, transformation, and exposure to use‑cases. - Visualize results and communicate findings to business stakeholders. - Coordinate project progress and articulate value propositions. - Participate in R&D: create internal tools, libraries, and evolve the in‑house AI platform. - Contribute to knowledge sharing, documentation, and technical watch. **Required Skills** - Cloud infrastructure (GCP, Azure, or AWS) and containerization (Docker). - Data pipeline engineering, Data Lake/Data Warehouse management. - ML Engineering, ML/Deep Learning, LLMs, AI agents. - Programming: Python, SQL, Git. - Experience with orchestration/agent frameworks (LangChain, LangGraph, Dify, n8n). - API‑driven web technologies (FastAPI, Flask, Django) and visualization frameworks (Streamlit, Dash). - Strong autonomy, clarity, pedagogy, initiative, and organizational skills. **Required Education & Certifications** - Master’s degree or equivalent Grande École engineering background in Data Science, AI Engineering, or related field. - Demonstrated experience in at least one of the following areas: cloud infrastructure, data pipeline implementation, Data Lake/Data Warehouse, ML Engineering, Machine Learning/Deep Learning, LLMs, AI agents.
Paris, France
On site
12-01-2026
Company background Company brand
Company Name
Leonar
Job Title
Head of Ops - Cybersécurité
Job Description
**Job Title:** Head of Ops – Cybersecurity **Role Summary:** Lead the operational transformation of a high‑growth cybersecurity startup. Build, optimize, and scale processes across customer success, support, SOC, finance, and HR while ensuring alignment with corporate strategy. Drive performance through KPI design, resource planning, and cross‑functional coordination, reporting directly to the CEO. **Expectations:** * Deliver end‑to‑end operational excellence and scalability. * Maintain a disciplined, data‑driven approach to continuous improvement. * Cultivate a high‑performing team of 10 across multiple functional areas. * Communicate clearly with executive leadership and external stakeholders. **Key Responsibilities:** * Define and execute an operating model that aligns with company growth targets. * Continuously refine internal workflows using Lean/Kaizen principles and map client & internal journeys to eliminate friction. * Establish and monitor KPI dashboards (NPS, churn, ticket turnaround, OPEX, etc.) to drive accountability. * Lead Customer Success: super‑vise onboarding, adoption, renewals, and MSP engagement methodology. * Oversee Support & SOC functions: ensure ticket quality, priority handling, escalation protocols, and playbook evolution. * Manage financial operations: quarterly reforecasting, monthly variance analysis, and OPEX modeling for SOC, CSM, and Support. * Implement HR standards: onboarding, performance review cycles, career path planning, and a continuous‑improvement culture. * Coordinate cross‑department initiatives (Sales, Tech, Product, SOC) to ensure priority alignment and seamless collaboration. **Required Skills:** * Strong analytical and data‑driven mindset. * Mastery of Lean, Kaizen, or similar continuous improvement frameworks. * Proven cross‑functional leadership and ability to influence without formal authority. * Excellent communication, presentation, and stakeholder‑management skills. * Track record of KPI design, process mapping, and operational scaling in a rapid‑growth environment. * Fluency in English (reading, writing, speaking). **Required Education & Certifications:** * Bachelor’s or Master’s degree in Business Administration, Operations Management, Engineering, or related field. * 4+ years of operations experience, preferably in SaaS, venture‑backed startup, or strategy consulting. * Certifications such as Six Sigma, Lean Management, PMP, or equivalent are highly desirable.
Paris, France
On site
Junior
12-01-2026
Company background Company brand
Company Name
Leonar
Job Title
Software Engineer - Construction & Tech
Job Description
Job title: Software Engineer – Construction & Tech Role Summary: Fullstack engineer collaborating directly with the founding team to design, build, and scale a SaaS platform for the construction industry. Own end-to-end features, guide technical architecture, and bridge business needs with engineering excellence. Expactations: - Deliver high‑quality, scalable code in a fast‑paced startup environment. - Work closely with CTO, CEO, and CPO on product roadmap and system design. - Maintain strong focus on code cleanliness, testability, and performance. Key Responsibilities: - Develop complete features using TypeScript, React (Vite), Node.js (Fastify), TRPC, and Drizzle. - Architect and refactor systems to support financial and operational data workflows. - Implement best practices: TDD, continuous refactoring, Extreme Programming. - Participate in pair programming and system‑design sessions. - Translate business requirements into technical solutions that drive product impact. Required Skills: - Advanced proficiency in TypeScript/JavaScript ecosystem (React, Node.js). - Experience with relational databases (PostgreSQL) and ORMs. - Strong system‑architecture abilities and code refactoring expertise. - Familiarity with modern tooling (Vite, Fastify, TRPC, Drizzle). - Commitment to clean, maintainable, and well‑tested code. Required Education & Certifications: - Graduate of a Grande École d'Ingénieurs (e.g., X, Centrale, Mines, Télécom) or equivalent self‑taught “outlier” profile. - Minimum 2–3 years of startup or scale‑up experience in software engineering.
Paris, France
On site
Junior
20-01-2026