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Hellio Tech Stack

Energy efficiency services and RGE contractor network for French buildings

Environmental Services Clichy, Île-de-France 201–500 employees Founded 2008 Partnership

Hellio operates a French energy-efficiency platform connecting residential and commercial clients with vetted RGE-certified contractors. The hiring mix is heavily sales-driven (14 of 29 open roles), with ops and legal support, suggesting active B2B commercial expansion—a pain-point focus confirms this, with 'expanding b2b market' and 'b2b commercial deployment' recurring across their project list. The tech stack (Salesforce, Next.js, NestJS, TypeScript) is lean and modern, typical of a services-led company moving toward product-driven operations.

Tech Stack 14 technologies

Core StackSalesforce TypeScript Next.js NestJS Docker Postman Canva Microsoft Office Excel PowerPoint Git Google Workspace Genially Kahoot

What Hellio Is Building

◆Challenges

Expanding b2b market
Public procurement contract management
Reducing energy consumption and costs
Expanding b2b commercial deployment
Tracking cee dossier progress
Evaluating feasibility of energy projects
Expanding training activity
Adapting commercial offers to cee framework
Increasing adoption of cee financing
Optimizing cee utilization

▲Active Projects

B2b commercial deployment plan
Energy improvement projects
Energy performance projects in agriculture
Supporting marketing events
Representing hellio at professional events
Implementing commercial action plan
New offer creation
Evolution of commercial offers
Cee certification projects
Technical proposal development

Hiring Activity

Accelerating30 roles · 15 in 30d

Department

Sales

14

Ops

4

Legal

3

Engineering

2

Product

2

Energy

1

Quality

1

Training

1

Seniority

Mid

16

Junior

4

Senior

4

Intern

3

Manager

1

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About Hellio

Hellio has operated since 2008 as France's leading energy-efficiency advisory and contractor-matching service. The company serves residential customers, businesses, and municipal authorities across mainland France and overseas territories, offering energy audits, retrofit project management, and access to government-backed energy-savings certificates (CEE). The core model pairs in-house engineering and energy expertise with a network of approved RGE tradespeople, handling the full chain from audit and design through installation and certification. With 201–500 employees based in Clichy, the company positions itself as an independent player anchored in decarbonization outcomes.

HeadquartersClichy, Île-de-France

Company Size201–500 employees

Founded2008

Hiring MarketsFrance, Spain

Frequently Asked Questions

What is Hellio's main business?

Hellio connects French residential and commercial property owners with certified RGE contractors for energy-efficiency improvements. Services include energy audits, retrofit design, project management, and government energy-savings certificate (CEE) administration.