Bluebird

As Managing Partner IT at Bluebird Recruitment, I am responsible for building out our IT recruitment team with ex-industry experts and connecting top IT talent with leading companies throughout Europe. 

We focus on various IT areas, from software development, cloud & infrastructure, data science & engineering, product roles and more. 

Determined to transform the recruitment space, my goal is to integrate authentic industry expertise, fundamentally changing the sector. By utilising my technical background and understanding of the industry, I am committed to making an impact.

Managing Partner IT

ASML

At ASML, a leader in the semiconductor industry, I contributed to developing a platform designed to provide insights into machine operations. This platform played a crucial role in monitoring for errors, facilitating timely fixes, and employing artificial intelligence to anticipate potential failures.

Due to the proprietary and sensitive nature of the technology and processes at ASML, much of the detailed information about my role and the project specifics is classified. This experience has honed my skills in handling confidential data and working within strict operational security guidelines, reinforcing the importance of discretion and integrity in high-stakes environments.

𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆: 𝗦𝗲𝗺𝗶𝗰𝗼𝗻𝗱𝘂𝗰𝘁𝗼𝗿

𝗧𝗲𝗰𝗵 𝘂𝘀𝗲𝗱: 𝗝𝗮𝘃𝗮, 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗔𝗶𝗿𝗳𝗹𝗼𝘄 𝗳𝗼𝗿 𝗗𝗮𝘁𝗮 𝗘𝗻𝗴.

Senior Fullstack Engineer

Alphabet Nederland

At Alphabet Lease (part of BMW Group), a leasing company, my role involved developing modular components for a complex system and leading several frontend projects. As a Chapter Lead I spearheaded technical innovation within our eco-system. This included conducting Angular upgrades and enhancing the codebase for better performance. The frontend team, comprising 10 members, was responsible for overseeing and managing 20 separate Angular projects, each an individual application.

I also contributed to the refactoring of a key application, transitioning it to a monorepo structure with Nx to improve maintainability and scalability. 

𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆: 𝗔𝘂𝘁𝗼𝗺𝗼𝘁𝗶𝘃𝗲

𝗧𝗲𝗰𝗵 𝘂𝘀𝗲𝗱: 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗝𝗮𝘃𝗮, 𝗞𝘂𝗯𝗲𝗿𝗻𝗲𝘁𝗲𝘀

Frontend Chapter Lead

Lyfo

At Lyfo, a provider of advanced mobile coverage solutions critical for ensuring reliable communication, I developed an Angular application made for configuring the backend for their clients, including the Dutch police. The code that was written is quality tested by an external party and was found to be excellent.

𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆: 𝗧𝗲𝗹𝗲𝗰𝗼𝗺 (𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲)

𝗧𝗲𝗰𝗵 𝘂𝘀𝗲𝗱: 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗚𝗼, 𝗞𝘂𝗯𝗲𝗿𝗻𝗲𝘁𝗲𝘀

Lead Frontend Engineer

Datlinq

At DatLinq, a Dutch company known for its data solutions in the foodservice industry, I worked on the SaaS platform (DOX). My responsibilities included the development and enhancement of Data Outlet X and Salesmapp API. This platform gave our clients in the foodservice market data-driven decision making capabilities.

𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆: 𝗦𝗮𝗮𝗦 & 𝗙𝗼𝗼𝗱𝗦𝗲𝗿𝘃𝗶𝗰𝗲

𝗧𝗲𝗰𝗵 𝗨𝘀𝗲𝗱: 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 𝟴+, 𝗝𝗮𝘃𝗮, 𝗚𝗼𝗟𝗮𝗻𝗴, 𝗡𝗼𝗱𝗲, 𝗚𝗿𝗮𝗽𝗵𝗤𝗟

Lead Fullstack Engineer

Ministerie van Volksgezondheid, Welzijn en Sport

Increasing mobility of citizens between EU countries results in a growing number of people seeking healthcare outside their own region or country. To facilitate the exchange of patient data among countries, the European Union collaborates with member states on an international infrastructure known as eHealth Digital Services & Infrastructure (eHDSI). The Netherlands is integrating into this system of national contact points with its own national contact point called the National Contact Point for eHealth (NCPeH). Through the NCPeH, healthcare professionals can digitally retrieve patient summaries from patients in EU countries requiring unplanned care in the Netherlands.

𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆: 𝗚𝗼𝘃𝗧𝗲𝗰𝗵

𝗧𝗲𝗰𝗵 𝘂𝘀𝗲𝗱: 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗝𝗮𝘃𝗮, 𝗞𝘂𝗯𝗲𝗿𝗻𝗲𝘁𝗲𝘀, 𝗢𝗽𝗲𝗻𝗡𝗖𝗣.

codecentric Nederland B.V.

Codecentric is a consultancy firm. Since the start I have worked on one project:
Project: MOJO (Read below)

Fullstack Engineer

Mojo Concerts

At MOJO Concerts, a leading promoter of live music and entertainment events, I was tasked with developing an application named UNA. UNA is designed to streamline event access control, scheduling, and workflow management, playing a critical role in enhancing the operational efficiency of live events. This application utilizes a modern tech stack and leverages cloud-based solutions to ensure scalability and reliability.

𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆: 𝗦𝗮𝗮𝗦 𝗳𝗼𝗿 𝗮𝗰𝗰𝗲𝘀𝘀 𝘁𝗼 𝗲𝘃𝗲𝗻𝘁𝘀 & 𝗰𝗼𝗻𝗰𝗲𝗿𝘁𝘀

𝗧𝗲𝗰𝗵 𝘂𝘀𝗲𝗱: 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗡𝗼𝗱𝗲, 𝗚𝗿𝗮𝗽𝗵𝗤𝗟, 𝗖𝘆𝗽𝗿𝗲𝘀𝘀, 𝗚𝗖𝗣, 𝗔𝗪𝗦

Working while being a student

During my studies, to gain practical experience, I wanted to work. I faced the challenge that no company was willing to hire me part-time. Driven by resilience and determination, I didn't let this stop me. Instead, I chose to start my own freelancing 'company' as a way to gain that experience. I've worked on a variety of projects, ranging from small websites for local artists to large-scale applications like a planning system for a major transportation company. This experience has given me a versatile skill set, making me broadly deployable in various IT roles.

The tech stack I've used includes: WordPress, PHP, Laravel, JavaScript, AngularJS, Angular, React, HTML/CSS, and React Native.

As a former developer, I redefine the kind of developer you think you’re looking for and see beyond the resume to ensure you hire the real deal.

If you're a developer or hiring manager, feel free to send me a message on work related things.

If you're a human being you can always send me a message with anything random because I like engaging with you nonetheless 😉

🚀 Dennis van Valderen

Leading International @Personio | Building community @Pavilion | Architecting Growth @Winning By Design | Showing revenue teams what’s next @GTM OS

Over the past 12 years in SaaS, I’ve seen firsthand where most Founders and Revenue leaders fail: 

- No structured Go-To-Market strategy → Running multiple GTM motions at once. Growth stalls, especially beyond the home market.
- No consistent sales process → Relying on individual performance instead of repeatable systems. No scalable growth engine.
- No clear revenue insights → Looking at blended metrics instead of pinpointing what drives conversions. Low rep productivity, declining ARR per FTE.

I get it. Day-to-day operations take over, and revenue inefficiencies stack up.

The bad news? You’re responsible for fixing it.

The good news? I can help you and your SaaS business.

How I help B2B SaaS teams ($5M-$25M ARR) scale faster:

- GTM & Sales Strategy – Structuring inbound, outbound, and partner strategies across SMB, Mid-Market, and Enterprise.
- Sales Process Optimization – Improving conversion rates and reducing reliance on top performers.
- Playbooks & Execution – Building structured systems, coaching frameworks, and checklists for consistent revenue growth.
- High-Performing Teams – Hiring, developing, and structuring commercial teams with clear accountability.

Results I’ve helped drive:

→ Increased sales team efficiency by 2X through scalable sales team structuring and skill development frameworks.

→ Improved win rates to 25% by implementing structured tactical and operational Go-To-Market tactics.

→ Built GTM playbooks that accelerated ARR growth for early-stage and scaling SaaS companies to $10M ARR.

How we can work together: 

1. Coaching & Advisory – Hands-on support to build a scalable sales engine.
2. On-Demand Sessions – Solving your biggest sales execution challenges.
3. GTM Playbooks & Frameworks – Proven templates for predictable growth.

Scaling isn’t about luck. It’s about building the right systems.

What’s blocking your revenue growth today? Let’s fix it.

DM me and let’s chat.

Koen Stam

3 years of ChatGPT. Thousands of prompts.
 
And I still had to explain who I am every single time.
 
That was the moment I knew it was over.
 
Here is what broke it for me.
 
I write LinkedIn posts, a Substack newsletter, and GTM playbooks every week. Content is how I build trust with founders and GTM operators.
 
And for 3 years, every time I opened ChatGPT, I started from scratch.
 
Pasting my tone of voice. Explaining my audience. Describing what I do and do not write.
 
And still the output read like it could have come from anyone.
 
I tried Claude on a random Wednesday. Built my first project.
 
Uploaded my writing instructions. What to write. How to structure. What to avoid.
 
Then I uploaded 20 previous LinkedIn posts, a few newsletters, and two GTM playbooks I had already written.
 
Something shifted.
 
I recorded a voice note on a walk. Raw thoughts, unfiltered. Pasted it into Claude.
 
And what came back read like me. My words. My rhythm. My edge. No cleanup needed.
 
That never happened with ChatGPT. Not once in 3 years.
 
Here is why it works:
 
1. The instructions tell Claude how I write. My rules, my formatting, my voice.
2. The uploaded content shows Claude what my writing actually looks like in practice.
3. Memory compounds. Every conversation makes the next one sharper.
4. My voice input is always the starting point. The raw thinking stays mine. Claude shapes it, it does not replace it.
5. It pushes back. Questions my structure. Challenges a weak hook. ChatGPT just said yes to everything.
 
The workflow is simple. I think out loud. Claude builds with me.
 
The output sounds like a human who has done the work. Because the input came from one.
 
If you want to try this, start here.
 
Create a project. Upload your best previous work. Write clear instructions on who you are, who you help, and how you talk.
 
Then give it a voice note and see what comes back.
 
Most GTM operators are still using AI the same way they did 12 months ago.
 
Are you?

I scaled a SaaS company from 2M to 10M in under 3 years.
 
The playbook that worked was the opposite of what most teams attempt.
 
We narrowed instead of expanded.
 
Netherlands first.
 
Belgium could wait. The book of business was not large enough and I did not care.
 
We trimmed our ICP from "50 to 500 employees" to something so specific it included industry, desk vs non-desk ratio, and tech stack attributes.
 
We gave our CSM veto power over new pipeline.
 
If we could not make a customer happy, we did not accept the deal.
 
Pipeline went down.
 
Win rates hit 34%. ACV went up. Cost of acquisition dropped.
 
Every growth ceiling I have hit in the last decade taught me the same thing.
 
The answer was never more channels, more headcount, more spend.
 
The answer was better execution, better focus, better discipline on what actually moves pipeline.
 
I spent the last months turning that lesson into a system.
 
The GTM Channel Reset Playbook.
 
12 steps across 3 phases. Built on 10+ years of GTM leadership and backed by 100,000+ signals from operators and founders.
 
It includes a self-assessment, a full workbook, an implementation timeline, and a cadence pack to keep the system running.
 
I am publishing it in 3 parts this week on my Substack.
 
Part 1 and 2 are free. Monday and Wednesday.
 
Both designed so you can take what you read and apply it in your day to day immediately.
 
Part 3 drops Friday exclusively for paid subscribers, including the full workbook, implementation timeline, and cadence pack.
 
Part 1 drops today.
 
This playbook is also the foundation of my first GTM OS Cohort.
 
12 weeks. Weekly office hours. All the learnings from 10+ years of scaling SaaS companies, packaged into one program.
 
Starting April.
 
Keep an eye on my posts in the coming weeks.
 
Link in the comments.

I nudged one of my reps to start using Mutual Action Plans on her 25K+ deals.
 
A few months later she messaged me:
 
"I used it pretty much on every opp I won this quarter. And the customers love it."
 
That did not surprise me.
 
Here is what most sellers miss.
 
9 out of 10 of your buyers have never bought your category of software at their current company. They do not know the process, they do not know who to align internally, and they do not know where things can go wrong.
 
That fear kills deals.
 
A Mutual Action Plan removes it. You give the buyer a clear path because you have guided hundreds of buyers before them.
 
But something else happens that most sellers do not expect.
 
The MAP makes your champion look good. When they share a structured, professional plan with their CFO or VP, it signals they have done their homework. I have watched champions go from hesitant to loop in stakeholders to actively pulling them in, because the MAP gave them the confidence to own the process internally.
 
That changes the buying dynamic completely.
 
The data backs it up:
 
1. Deals with a MAP have a 60% win rate. Without one: 29%.
2. MAPs with 6 to 10 completed steps hit 84%.
3. MAPs with 11 to 15 completed steps reach 92%.
4. The sweet spot sits between 6 and 20 total steps. Beyond 30, win rates drop back to baseline.
 
My rep did not just close more deals.
 
She gave her buyers the confidence to move forward. And her champions the credibility to bring others along.
 
We run our MAPs in trumpet 🎺. That is where it started for her. One nudge, one tool, one quarter of closed deals.

taplio

The Battle

🚀 Dennis van Valderen

Koen Stam

Followers

Posts

Engagements

Likes

Performance ScoreKoen Stam's LinkedIn Performance

Ready to grow your LinkedIn presence?

taplio

The Battle

🚀 Dennis van Valderen

Koen Stam

Followers

Posts

Engagements

Likes

Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Koen Stam's LinkedIn Performance

Ready to grow your LinkedIn presence?

Performance ScoreKoen Stam's LinkedIn Performance