About us

Thermosphr is a German startup founded in Berlin in 2020. We cut energy use in commercial buildings by optimising their heating, ventilation and air conditioning (HVAC) systems.

Real estate accounts for roughly 40% of global energy-related CO2 emissions, and most of a commercial building’s energy goes to HVAC, much of it wasted through poor static & reactive

control.

Our service plugs into a building’s existing IT & energy infrastructure (BMS/BACS, GLT in German), with no new hardware. It uses thermal modelling and Model Predictive Control to forecast a building’s

behaviour and adjust HVAC settings in real time, typically reducing energy consumption by around 20 - 30% while significantly improving occupant comfort.

We were founded by Nicolas Le Borgne (CEO), who has spent his career building and scaling B2B

startups, and Dr. Mark Aaron Chan (CTO), a thermal-management specialist with a PhD and

research experience at NASA & General Electric. The team combines HVAC and thermal

engineers, control and data scientists, and BMS specialists across our Berlin, Munich and Paris

offices.

We are the fastest growing actor in our category in Europe, optimising 24/7 +2M square meters

across the most prestigious real estate operators (Brookfield, URW, Klépierre, AEW, Generali, PERIAL, La Française, Accor, Commerzreal, Demire, HBB, Equans, Spie Facilities, BNP Paribas, La Poste

Immobilier, Iroko, HSBC, Arkea, Groupama Immobilier, Ville de Paris, etc.).

We work in small teams, value clear thinking over process, and prefer to under-promise and let

the savings data speak. You will see the impact of your work directly, on the business and on the

buildings we run.

What you’ll do

To spearhead our expansion across the DACH market, and Europe, we are looking for a Senior

Full-Cycle Entreprise Account Executive, based in Germany. This is a high-impact individual-contributor role for a strategic sales professional who thrives in complex enterprise environments. You will own the full sales cycle for new logos and keep Thermosphr as a trusted advisor in the German real estate market.

As Entreprise AE you will:

• Grow the DACH & European market: identify, prioritise and approach target accounts with a

tailored message across the relevant verticals, building the pipeline from the ground up.

• Own the full sales cycle: from first contact to signature, working closely with

cross-functional teams (pre-sales, marketing) to win complex enterprise accounts.

• Be the trusted local advisor: understand the unique challenges, ambitions and needs of

prospective DACH clients and position our energy optimisation service accordingly.

• Run impactful demos and proposals: deliver customer-facing presentations alongside

Customer Success & Project Engineers, and prepare and manage pricing proposals.

• Manage your pipeline: keep the CRM accurate, forecast reliably, and ensure a seamless

transition from closing to client onboarding.

• Represent Thermosphr: attend networking events and B2B fairs in Germany and across

Europe, and feed market insights back to product and marketing.

What you bring

Must-have

• A Bachelor’s degree (or equivalent).

• 5+ years of experience in B2B sales roles, with a proven track record of securing complex

enterprise-level accounts.

• Proven ability to build, manage and convert large sales pipelines, working both

independently and collaboratively in a fast-paced, entrepreneurial environment.

• Fluent proficiency (written and spoken) in both German and English.

• A customer-centric approach and the ability to build relationships with stakeholders at all

levels.

Nice-to-have

• Experience in real estate, energy efficiency or startup sectors.

• Willingness to learn complex and technical products.

• A genuine interest in real estate and environmental issues.

• Experience with Revenue tools (CRM, like Hubspot, AI recording tool, like Modjo)

• Any other European language.

Site visits & networking events in Europe

This role is based in Germany (either in our Berlin or Munich office or remote). Physical presence

in our office in Paris city centre is expected in the first weeks to learn quickly alongside your

manager and colleagues. Please note this job requires regular site visits, mostly in Germany, and

regular networking events in Germany and across Europe.

What we offer

• Salary: 60,000 – 70,000€ fixed + variable for a total uncapped OTE of approximately 85,000

– 100,000€, depending on seniority/experience

• Virtual shares options.

• Full sales tools and perks (transport, electric bike rental, phone, headphones, AI

productivity tools, etc.).

• The opportunity to learn from a leadership team from top-ranking institutions (NUS, NASA),

used to working with European fast-growing structures (GreenFlex, Rocket Internet, vinted).

We have you covered financially, for benefits, work flexibility and dedicated time for your loved

ones ; but if those are your only drivers, we may not be the best choice for you.

We’re moving very fast, so apply now if you want to join us.