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Citron® Tech Stack

Energy management platform for real estate and municipal portfolios

Environmental Services Suresnes, Île-de-France 51–200 employees Founded 2011 Partnership

Citron® builds software for measuring, analyzing, and optimizing energy consumption across large building portfolios—serving corporates, municipalities, and housing operators. The tech stack (Node.js, TypeScript, MongoDB, Angular, Kubernetes, ClickHouse) reflects a data-intensive architecture designed to ingest and visualize streams from IoT sensors and building management systems. Engineering dominance in the hiring mix, paired with active projects in thermal modeling and automated energy calculations, signals a company pushing deeper into predictive analytics and regulatory compliance automation rather than staying at the dashboard layer.

Tech Stack 22 technologies

Core StackNode.js TypeScript MongoDB Angular Python AWS Kubernetes GitHub Actions Terraform Docker ClickHouse Neo4j Prometheus Grafana Loki CloudWatch ArgoCD Linux HubSpot AWS EKS AWS WAF Notion

What Citron® Is Building

◆Challenges

Energy transition for large real estate portfolios
Optimizing energy usage
Contract compliance management
Managing large data volumes
Reducing energy consumption
Conformité réglementaire
Client dispute resolution
Administrative compliance
Detecting energy waste
Réduction de consommation énergétique

▲Active Projects

Bms feature development
Energy audit
Emef module update
Administrative document storage
Data collection and structuring
Platform update
Automated calculation tool development
Audits std
Audit énergétique
Modélisation thermique statique ou dynamique

Hiring Activity

Decelerating20 roles · 3 in 30d

Department

Engineering

7

Consulting

3

Ops

3

Legal

2

Product

1

Seniority

Senior

7

Mid

4

Junior

2

Manager

2

Intern

1

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About Citron®

Citron® is a PropTech company based in Suresnes, France that digitalizes energy management for enterprises, local governments, and property owners. The platform handles measurement, analysis, optimization, and regulatory reporting across all energy types tied to buildings and transportation fleets. Core offerings span energy auditing, real-time consumption monitoring, compliance tracking (including France's Décret Tertiaire), and advisory on energy transition strategy. The company operates with engineering and consulting teams, serving mid-market and large-scale portfolio operators across France.

HeadquartersSuresnes, Île-de-France

Company Size51–200 employees

Founded2011

Hiring MarketsFrance

Frequently Asked Questions

What technology does Citron® use to build their platform?

Node.js, TypeScript, and Angular on the frontend; MongoDB and ClickHouse for data storage; AWS (EKS, CloudWatch, WAF) and Kubernetes for infrastructure; Prometheus and Grafana for monitoring.

What is Citron® working on?

Active projects include building management system (BMS) feature development, energy audit tooling, thermal modeling, automated calculation engines, data collection pipelines, and administrative compliance document storage.