einhundert Tech Stack

Energy transition platform for residential real estate electrification

Services for Renewable Energy Köln, Nordrhein-Westfalen 51–200 employees Founded 2017 Public Company

einhundert operationalizes energy transition for residential landlords and housing companies across Germany. The stack—Python, PostgreSQL, Terraform, AWS, plus AutoCAD for building design—reflects a hybrid engineering posture: software-first for metering, billing, and platform automation, but still tethered to physical infrastructure (solar installs, heat pumps, smart meters). Adoption of GitHub Copilot and Claude signals a shift toward AI-assisted development, while the project mix (tenant electricity, heat pump scaling, spot market optimization) reveals growing ambition beyond installation toward real-time grid services and tenant billing.

Tech Stack 22 technologies

Core StackPython GitHub Actions Terraform AWS PostgreSQL AutoCAD Personio LinkedIn Recruiter Google Workspace SQL Microsoft Office Pyright mypy pytest DuckDB LinkedIn Zoho One

AdoptingGitHub Copilot OpenAI Codex Claude MCP

What einhundert Is Building

◆Challenges

Expanding solar installations on multi-family buildings
Renewable plant integration
Optimizing go-to-market processes
Scaling heat pump installation
Spot intraday market revenue optimization
Smooth operation of smart meter projects
Managing subcontractor network
Streamlining recruiting process
Scaling automation processes
Streamlining contract lifecycle management

▲Active Projects

Technical integration of plants
Development of marketing strategies for renewable energy plants
Tenant electricity projects
Industrial scaling of heat pump installation
Digital data capture and field service app integration
Photovoltaic installations on multi-tenant buildings
Smart meter projects
Optimizing people processes
Process automation
Optimization of spot intraday revenue

Hiring Activity

Decelerating35 roles · 7 in 30d

Department

Engineering

Ops

Sales

Marketing

Construction

Data

Legal

Seniority

Senior

Intern

Lead

Junior

Mid

Manager

C-Level

Notable leadership hires: Chief Revenue Officer, PV Project Lead

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About einhundert

einhundert helps residential real estate companies decarbonize building portfolios through integrated electrification: solar systems, heat pumps, smart metering, and local tenant electricity models. Founded in 2017 and based in Cologne, the company serves the German housing sector with a bundled offering that spans physical installation, digital platform, and real-cost billing. The org runs 51–200 people across engineering, operations, sales, and construction roles, with active hiring concentrated in engineering and technical delivery. Current work spans photovoltaic installations on multi-family buildings, industrial heat pump rollout, smart meter integration, and optimization of intraday grid revenue.

HeadquartersKöln, Nordrhein-Westfalen

Company Size51–200 employees

Founded2017

Hiring MarketsGermany

Frequently Asked Questions

What is einhundert's tech stack?

Python, PostgreSQL, DuckDB, Terraform, AWS, GitHub Actions, Pyright, pytest for backend and infrastructure. AutoCAD for building and solar design. Personio for HR, Google Workspace for productivity, Zoho One for CRM/operations.

What is einhundert working on?

Photovoltaic and heat pump installations on residential buildings, tenant electricity projects, smart meter deployment, digital field service integration, and spot market revenue optimization for renewable plants.