ABOUT KOSTER CX
Pragmatic technical solutions built with clarity and purpose.
Koster CX is an independent technical consultancy. I partner with individuals, local high street businesses, non-profits, and larger organisations to deliver reliable web hosting, clean websites, and custom software solutions.
Brand Identity
CX stands for Creative eXperience.
In technical consulting, “Creative Experience” isn't about decorative flair or marketing buzzwords. It represents a thoughtful, creative approach to engineering challenges — designing architectures that are clean, resilient, and intuitive for the people who actually use and maintain them.
Our Philosophy
Simplicity is the highest form of engineering.
Many businesses and organisations find themselves burdened by bloated software stacks, convoluted agency contracts, and systems so fragile that simple updates require days of effort.
At Koster CX, the focus is the exact opposite: understanding the actual problem, stripping away unnecessary overhead, and delivering straightforward solutions that simply work. Whether building a clean website for a local shop, configuring reliable containerised hosting, or connecting Salesforce with backend databases, the priority is always clarity, reliability, and long-term maintainability.
Pragmatic Craft
Choosing proven, open technologies that solve problems effectively without creating unnecessary vendor lock-in or licensing overhead.
Human-Centred Architecture
Software built around how you and your team actually work day-to-day, not how an enterprise software vendor expects you to conform.
The Person Behind Koster CX
Kees-Jan Koster
Christian, husband, (step)dad, and Dutchman.
I am the independent software engineer and consultant behind Koster CX. Over my career, I have worked with a wide spectrum of clients: from local high street business owners (like the barber or independent tradesperson who needs a fast, trustworthy website) and non-profit organisations working on careful budgets, to growing commercial companies and larger organisations with complex Salesforce and software architectures.
As an independent specialist, I take pride in honest, direct craftsmanship. When you work with Koster CX, you deal directly with the person writing the code, setting up the infrastructure, and answering your questions — without account managers, agency markups, or artificial complexity.
Rooted in my Christian faith and family life, I bring integrity, transparent advice, and practical dedication to every project I undertake.
Sector & Client Experience
Who I work with
Technology should fit the context and scale of your organisation. I provide the same direct senior attention whether you are a local sole trader or a technical director in a larger company.
Local Businesses & Sole Traders
From the local high street barber, clinic, or tradesperson to independent consultants. You need a clean, fast website with your services, opening hours, contact details, and location, paired with hassle-free managed hosting and someone you can easily reach when you need changes.
Growing For-Profit Companies
Established businesses and service providers seeking dependable digital platforms, custom internal tools, or automated workflow integrations. We replace clunky manual processes with deterministic software and high-availability hosting.
Charities & Non-Profit Organisations
Mission-driven organisations where every penny matters. We design cost-efficient web platforms and systems that minimize recurring SaaS fees, provide clear stewardship of donor resources, and ensure secure, reliable operation.
Larger Organisations & Teams
Organisations with established architectures, Salesforce environments, ERP databases, or legacy codebases. We deliver custom Apex development, asynchronous REST integrations, Docker environments, and systematic refactoring.
Process & Methodology
How I work
A disciplined, three-stage delivery process focused on clear communication, predictable milestones, and reliable execution.
Understand
Start by thoroughly understanding the actual business challenge, existing technical constraints, and real requirements before writing a single line of code. No premature assumptions or one-size-fits-all templates.
Build
Implement using appropriate, reliable technologies while strictly avoiding unnecessary complexity. Focus on high performance, clean code, accessibility, and robust security from day one.
Support
A solution is only as good as its long-term reliability. I provide ongoing managed hosting, security patching, monitoring, automated backups, and incremental improvements as requirements evolve.
The Independent Difference
Why work with Koster CX?
Working directly with an independent specialist gives you technical agility, complete transparency, and personal accountability.
Direct Senior Communication
You deal directly with the engineer designing and implementing your system. No account handlers, sales pitches, or miscommunications.
Open Standards & Full Ownership
Everything is built using standard, widely supported technologies (TypeScript, Astro, Docker, Linux, Node, Salesforce standards). You retain complete ownership of your code and data.
Honest, Pragmatic Guidance
If an off-the-shelf tool or simple static website solves your requirement better and cheaper than custom development, that is what is recommended. No fabricated complexity.
Have a project or technical challenge in mind?
Let's discuss what you are trying to achieve and determine the most sensible, cost-effective way to build or host it.