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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 a growing early-stage startup with a strong pipeline and successful angel funding, aiming to revolutionize the metering industry. This role offers the chance to learn sales and go-to-market strategies from the ground up, working closely with the founder and sales team.

Responsibilities

Build a dedicated sales pipeline and support the end-to-end pipeline, including market research, personalized outreach, lead qualification, stakeholder mapping, product demos, and closing deals.
Actively acquire new customers via phone and quickly qualify incoming inquiries to booked product demos.
Systematically manage the existing contact database in the CRM and ensure clean documentation of all sales-relevant activities.
Collaborate with the founder and founding sales manager on the conception and implementation of the go-to-market strategy and deepening strategic partnerships.
Support top-of-funnel activities and sales materials, and prepare for industry event appearances.
Take on central customer success tasks, including preparing and conducting customer onboarding, tracking customer activity, collecting feedback, and escalating issues as needed.
Assist project managers with core operational processes such as quote preparation, customer correspondence, and coordination of installations and partners.

Requirements

Ongoing or completed Bachelor's or Master's degree in Business Administration, a technical field (e.g., Industrial Engineering), Real Estate Management, or a similar area.
Ideally 2+ relevant internships (Startup, Consulting, M&A/VC) and/or professional experience in Sales/GTM or Real Estate.
High intrinsic motivation and strong entrepreneurial thinking with the ability to proactively drive own projects, learn quickly, take responsibility for diverse tasks, and handle ambiguity.
Strong analytical and conceptual skills to approach complex problems in a structured, direct, and solution-oriented manner, delivering high-quality results.
Excellent written and verbal communication and presentation skills, with the ability to tailor messages to various target audiences, including customers, investors, suppliers, and partners.
Technical affinity (e.g., AI, IoT, SaaS) and interest or initial experience in Real Estate, PropTech, ClimateTech, or Energy is a plus.
Native-level German (non-negotiable) and fluent English skills.

Skills

Sales pipeline building
Market research
Personalized outreach
Lead qualification
Stakeholder mapping
Product demonstrations
Deal closing
Customer acquisition
CRM management
Go-to-market strategy
Partnership development
Customer onboarding
Customer feedback collection
Quote preparation
Customer correspondence
Communication
Presentation
Analytical skills
Conceptual skills
Problem-solving
Technical affinity
AI
IoT
SaaS
Real Estate
PropTech
ClimateTech
Energy sector

Location

Berlin Mitte

Work Type

Full-time
Internship

Experience Level

Intern
Entry-level

Education Level

Bachelor's degree
Master's degree

Benefits

Direct collaboration and daily mentoring from an experienced founder.
Steep learning curve.
Opportunity to join a fast-growing early-stage startup digitizing a huge market.
High degree of personal responsibility, speed, and creative freedom.
Chance to make a real impact on the energy transition through digital metering services.
Clear option for permanent employment upon very good performance.
Opportunity to help build Heidi long-term as one of the first 20 employees.
High-performance team in a humorous and supportive culture.
Regular team dinners and joint events.
Newly renovated old building office in Berlin Mitte near Monbijoupark.
Co-working at a single table, short distances, and direct decision-making.
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 revolutionizing the metering industry, a huge, dusty market that has been largely untouched for decades.
As a PropTech and ClimateTech company, we combine software, IoT, and operations into a platform that makes energy and consumption data fully digital, transparent, and real-time for the first time.
We have 8 employees and a strong pipeline with over 5,000 active deals.
We have successfully completed our angel round with investors including unicorn founders and directors from Google and OpenAI.
We are on the path to 10x growth in 2026.