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About the Role

Heidi Systems is building the Energy OS for Real Estate, digitizing one of Europe's last analog markets and creating the infrastructure for intelligent energy management in buildings. We are seeking a Founding Sales Manager to take end-to-end responsibility for our entire sales pipeline, from lead identification to successful closing. This is a unique opportunity to build our sales and go-to-market team from the ground up and be a key driver of our steep growth targets.

Responsibilities

Manage the entire B2B sales pipeline with the founder, from prospecting and outreach to closing and onboarding handover.
Independently drive and close deals with new customers and partners, primarily via phone, supplemented by qualifying incoming inquiries and systematically processing the existing contact base.
Identify, prioritize, and systematically process relevant target customers and contacts, including regional property management companies, investors, developers, and large portfolio holders.
Steer and further develop the sales funnel along clear pipeline stages, KPIs, and next steps, and systematically maintain the CRM setup.
Collaborate closely with the founder on positioning, messaging, offer logic, pricing, and negotiation preparation.
Develop deep market expertise to engage in high-level discussions with management of property companies.
Continuously learn from customer conversations to refine target audience approach, sales materials, and processes.
Actively contribute to building a scalable sales structure with the prospect of taking on more responsibility in team building and leadership later.
Drive own initiatives outside of the pipeline and contribute to operations outside of sales.

Requirements

1-3 years of experience in B2B sales, business development, or a comparable commercial role.
Experience selling complex B2B, SaaS, or tech solutions.
Proven ability to independently drive opportunities and successfully close deals.
High level of initiative and enjoyment in building things in an early-stage environment.
Structured, analytical approach to work and a hands-on mentality.
Confident demeanor in customer conversations and the ability to quickly build trust and translate it into concrete next steps.
Technical affinity (AI, IoT, SaaS) and interest in real estate, PropTech, ClimateTech, or energy are a significant plus.
Native-level German (non-negotiable) and fluent English skills.

Skills

B2B Sales
Business Development
SaaS Sales
Tech Sales
Pipeline Management
CRM
Negotiation
Market Expertise
Communication
Relationship Building
AI
IoT
SaaS
PropTech
ClimateTech
Energy Management

Location

Berlin Mitte

Work Type

Full-time
Onsite

Experience Level

1-3 years

Benefits

A central role in building our commercial setup with direct influence on revenue, growth, and company development.
Direct collaboration with the founder, providing deep insights into strategy, positioning, pricing, deal structuring, and go-to-market.
A market with tailwinds: legal retrofitting mandate until 2027, an oligopoly described as non-competitive by the German Federal Cartel Office, and leading market references.
High content impact on one of the largest, yet often underestimated, levers of the energy transition – more efficient buildings and measurable CO₂ savings.
The opportunity to help build Heidi long-term as one of the first 20 employees, with the prospect of leading our sales and GTM team.
A high-performance team in a newly renovated old building office in Berlin Mitte, with regular team dinners and working together at one table – short distances, direct decisions.
Access to a strong network in real estate, tech, energy, and venture capital.

About the Company

Heidi Systems is building the Energy OS for Real Estate.
We are digitizing one of Europe's last analog markets and creating the infrastructure for intelligent energy management in buildings.
We are a PropTech and ClimateTech company combining software, IoT, and operations into a platform that makes energy and consumption data fully digital, transparent, and real-time.
We have a team of 8 people, a strong pipeline with over 5,000 active deals, and have successfully completed an angel round with investors including unicorn founders and directors from Google and OpenAI.
We are disrupting the metering industry, a huge, dusty market that has been largely untouched for decades.
We are growing rapidly and are on track for 10x growth in 2026.