Build APIs with iron-clad confidence
Prevent design drift, slash support tickets and stay compliant - keeping your enterprise clients happy.
Book your API design clarity sprintTrusted by great engineering teams
"Søren quickly grasped the technical and business context of our project and added value from day one. His strong engineering background and structured thinking made collaboration seamless. Just as important: his clear and confident communication."
René Passmann
CEO, HAV Media
Why great API design matters
Without clear patterns, teams hit roadblocks that stall releases and balloon costs
Lengthy Integration Cycles
Enterprise customers demand custom connectors and bespoke data mappings, stretching your sales-to-revenue timeline by weeks (or even months).
High Maintenance & Incident Rates
Scattered, undocumented endpoints lead to frequent breakages whenever you touch one API - triggering firefights, rolling back releases, and burning scarce engineering hours.
Poor Developer & Partner Experience
Inconsistent naming, missing specs, and no sandbox slow down internal teams and external integrators alike, driving up support tickets and eroding confidence.
Compliance & Security Gaps
Legacy APIs often lack modern auth, rate-limiting, and audit logging, exposing you to regulatory fines and jeopardising contracts with security-sensitive clients.
When API clarity drives results
A unified design spec removes integration roadblocks and lowers support burden so your team can innovate at full speed
Faster Time to Market
Consistent naming, uniform data formats, and clear versioning let teams and partners onboard in days instead of weeks - accelerating demos, proofs of concept, and deal closures.
Reduced Operational Overhead
Standardised error codes, automated tests, and backward-compatible releases slash support tickets and firefighting, freeing engineers to focus on new features rather than patching broken integrations.
Better Developer & Partner Experience
Interactive docs (OpenAPI/Swagger) and sandbox environments empower users to self-serve, cutting support load and turning integration teams into advocates who drive referrals and lower churn.
Your path to API design clarity
API Design Clarity Sprint
Over 7 days, I'll guide your team through a hands-on sprint to not only audit and enhance your existing APIs, but to co-author a living API Design Framework - think Google's AIP-lite - that you can apply organisation-wide.
Expert Guidance
Over the next three months, I'll partner with your team to embed your AIP-lite as a living framework - pure consulting to set up checkpoints, align stakeholders and track success, with direct Slack and email support throughout.
API Design Stewardship
Keep your AIP-lite alive and evolving with ongoing, high-level consultancy. I'll review upcoming API proposals, advise on architecture for new features and safeguard consistency across your estate - cancel any time.
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Designing APIs that scale with your team
I've spent my career designing APIs from the ground up, some supporting up to 50 million users globally
From early-stage startups to enterprise-scale platforms, I've designed API architectures that handle everything from rapid prototyping to massive user growth. My approach focuses on building systems that remain maintainable as your team and product evolve.
Whether it's GraphQL backends, REST architectures, or real-time systems, I help teams create APIs that scale technically and organisationally - turning complex design decisions into clear, actionable frameworks your developers can build on.