Business Development Representative / GTM Engineer | Sustainability SaaS

Coolset; Amsterdam; On-site; EUR 75,000 - 110,000; Full time

Benefits offered by this job

Stock option plan

Company lunches

Flexible and remote working

Job summary

Coolset is an ESG and supply chain platform based in Amsterdam. The Technical Business Development Representative will split time between sales execution and building the systems that power our go-to-market engine. You will craft workflows, integrate tools, and ship internal tools to accelerate deals.

You’ll work with Claude Code, n8n, and other automation tools to automate processes and improve reporting. A hands-on, experimental mindset is essential as you help scale the GTM function.

Qualifications

• Fluent in English and Dutch.
• Hands-on technical experience: APIs, webhooks, and building tools with Claude Code or n8n.
• Ability to think in systems and automate repetitive work.

Responsibilities

• 50% Sales execution: own full cycle from first touch to go-live and close.
• 20% GTM automation: design and maintain automations across the commercial stack; ensure data and integrations are healthy.

Skills

Fluent English

Dutch language

API experience

Tools

Claude Code

HubSpot

Apollo

Webflow

n8n

Notion

Job description

A note on the technical side of this role:

This is a technical position, and we want to be upfront about that so you can judge the fit for yourself. The strongest signal is that you’ve already built things with AI and automation tools, e.g. set up a workflow with webhooks, written a script to solve a problem, or connected APIs to get something done. If you’ve done things like this, even self-taught, even imperfectly, and even outside a sales context, you’re likely who we’re looking for. If your experience with AI so far is mostly chat-based, this role probably isn’t the right starting point yet.

[DUTCH SPEAKING ONLY]

About Coolset

Coolset is the ESG & supply chain platform for compliance-first teams. We help companies like Karl Lagerfeld and Australian Gold measure, manage and improve their sustainability disclosures, simplifying complex regulations to enable real impact.

Founded in 2022 and backed by a remarkable group of early-stage investors, we’re a fast-growing team of 20 engineers, researchers and commercial talent based in Amsterdam.

What you will do

As a technical Business Development Representative (what we call a GTM Engineer), your role is 50% running sales and 50% building the systems behind it. You’ll own sales processes from first touch to close, and you’ll build the automations and infrastructure that power our go-to-market engine. You’ll report directly to our CEO and sit at the intersection of selling and commercial infrastructure, where running real deals informs the systems you build, and the systems you build make the whole team more effective.

When you find yourself doing the same thing twice, you’ll treat it as useful information: question the assumption, build a system, and free yourself up for work that uses your creativity. We believe action creates information, so you’ll ship, learn from what happens, and iterate, with the team around you to support that.

You will cover:

• 50% Sales execution: From identifying prospects to closing. You will own the full cycle from first touch to go-live, helping our future customers navigate their priorities, aligning them with Coolset’s solutions, and landing on a commercial proposition that makes them successful.
• 20% Go-to-market automation, systems & infrastructure: Design and maintain the automations that connect our commercial stack end-to-end. Build workflows in n8n, connect APIs, set up webhooks, and remove manual work wherever it doesn’t add value. Own and evolve our core tooling and keep data clean, integrations healthy, and reporting reliable.
• 20% Technical GTM engineering: Use tools like Claude Code to build internal tools, scripts, and prototypes that accelerate our sales and marketing efforts. You’ll grow your range here over time; what matters is that you enjoy building and are comfortable figuring things out as you go.
• 10% Experimentation: Run experiments across channels, messaging, and tactics. Try things, measure what matters, and double down on what works. Judgment matters here too; not everything that can be measured should be, and not everything worth doing shows up in a dashboard immediately.

Tools we use

• Claude Code for building internal tools and accelerating work
• HubSpot for CRM & email marketing
• Apollo for company and contact data
• Webflow for our website and landing pages
• n8n for workflow automations
• Notion for documentation and planning
• Anything else you need

You’ll work directly with our commercial leadership to build on the foundations of our go-to-market engine, with real ownership and room to shape the function as we grow. As Coolset scales, your role will naturally expand in the direction that matches your ambitions.

Your profile

You don’t need to tick every box below. If most of this describes you, we’d love to hear from you.

• You are fluent in English and Dutch
• You enjoy a hands‑on approach and get energy from rapid experimentation
• You have hands‑on technical experience: you’ve worked with APIs, webhoo and you’ve built things with tools like Claude Code or n8n (or similar), whether at work or in your own projects
• You think in systems: when you see repetitive work, you see an opportunity to automate
• You care about quality and consistency in everything you ship, from an email subject line to a landing page to an internal workflow
• You’re analytical and comfortable working with assumptions and incomplete information
• You’re curious about how modern companies operate and what great looks like
• You are based in or around Amsterdam and excited to build alongside a growing team

Our process

• 20 min video screen: We get to know you and answer any questions you might have
• 60 min case interview: You’ll prepare and work through a case study of a GTM challenge we’re facing
• 2-hour co-build session & team lunch: Get to know the team through hands‑on work, and join one of our lunches to connect with the rest
• If successful: An offer within 48 hours to join Coolset
• Salary with attractive bonus schedule, plus:
• Stock option plan
• Company lunches
• Flexibility in holidays (25+ days per year)
• Flexible and remote working arrangements
• Annual offsite and monthly events with the Coolset team

As soon as you’re available; flexible until December

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Note: This is a full-time, primarily on-site position in Amsterdam. We can provide sponsorship and support visa applications, but we prefer candidates who are already based here.