Founding Sales

Antasphere; Brussel Hoofdstad; Hybrid; EUR 39,000 - 84,000; Full time

Benefits offered by this job

Equity

Monthly retainer + equity

Commission on closed deals

Job summary

Antasphere is Brussels-based, building custom software and growing rapidly. We seek our first salesperson to join the founders and build a scalable pipeline. You will qualify leads, drive inbound and outbound activity, and close deals together with the founders.

The role is hybrid from our Brussels office at WAT, with a long-term freelance collaboration and equity on offer. French is required; English is the working language. Start as soon as possible.

Qualifications

• Demonstrated success in closing deals with B2B clients.
• Experience running discovery calls and moving deals to signature.
• Ability to build and own a sales pipeline end-to-end.

Responsibilities

• Handle inbound leads and introductions from network, investors, and partners.
• Execute outbound prospecting using LinkedIn and email to generate opportunities in French.
• Lead full sales cycle from discovery through proposals, negotiation, and closing.
• Own and report on your pipeline, analyzing message effectiveness to improve strategy.

Skills

Sales experience

Discovery calls

Pipeline management

Outbound prospecting

French

English

AI curiosity

Tools

LinkedIn

Email sequences

CRM

Job description

Antasphere is growing. We build custom software for companies, and we run it for them: in six months we signed more than half a million euros of contracts, and the leads now come in faster than the founders can follow them up. We are looking for our first salesperson.

Brussels, hybrid from our office at WAT

• French required, English is the working language


• long-term freelance collaboration with equity


• start as soon as possible.

The role

Sales has been run by one of the founders until now. You take it over alongside the founders, and over time you carry most of it. The sale stays founder-led on the largest deals: you bring them in, qualify them and drive them, and we close them together.

• Inbound and introductions. Leads arrive through our network, our investors and our partners. You pick them up fast, qualify them, and turn the good ones into first calls.


• Outbound. Target lists, LinkedIn and email sequences, cold calls and follow-ups, mostly in French.


• The full cycle. Discovery calls, follow-ups, proposals with the founders, negotiation, signature. You own a deal from the first message to the signed order form.


• Your pipeline. You run it, you report on it, you know which message converted and why, and you tell us what the field says so the strategy gets better.

Not a classic sales job

We build software with AI agents, and we run the company on them. You will too. Your prospecting, your follow-ups and your reporting will go through agents and the tools we make, and you will tell us what is missing in them.

You do not need to be technical. You need to understand what a client is trying to fix, explain how custom software fixes it, and enjoy trying a new tool rather than defending the old way of doing things.

Who we are looking for

• You have sold. You have run discovery calls and followed a deal through to a signature, ideally for services, software or anything sold to businesses on more than one call.


• Proof over pitch. You can show us concrete work: deals you closed, a pipeline you built, numbers you moved.


• Hungry and hands-on. You pick up the phone, a no does not scare you, and you would rather send fifty messages than write a plan about sending them.


• Curious about technology and AI. You already use AI tools in your daily work and you like testing new ones.


• At ease in French, comfortable in English. Dutch is a plus.


• Based in Brussels, or close enough to come to our office at WAT regularly.


• Comfortable with ambiguity and the pace of an early-stage company.

What this role is not

• Not a management role: you sell yourself, there is no team to delegate to yet.


• Not a role with a fixed playbook handed over on day one: we build it together.


• Not a remote role.

The package

• A long-term collaboration agreement: you work with us as an independent contractor and invoice monthly. If an employment contract is a real requirement for you, tell us and we will discuss it.


• A monthly fee plus equity: you choose where you sit between cash and ownership.


• A commission on the business you bring in, and incentive mechanisms tied to the company's growth, shared by the whole team.

We walk through the full structure and the numbers with each candidate in the first call.