Every production build in one index: an enterprise Next.js rebuild delivered directly to a global maritime-training company, the AI-native products we build and run under the Ceero name, and the roles we've played on other teams' products.
- Client engagements
- 1
- Products & tools
- 6
- Professional credits
- 3
Enterprise Next.js for Maersk Training.
The clearest proof of the audit-and-fix track: brought in directly by a global maritime-training company after an earlier build fell short, to audit it, rebuild it, and ship two production platforms.
Maersk Training
Called in directly to rescue a stalled enterprise build
Two production platforms for a global maritime-training enterprise — audited, rebuilt, and shipped directly for Maersk Training after the original delivery fell short of what the business needed.
- Engaged directly by Maersk Training after an earlier build didn't hold up — audited the codebase, rebuilt what didn't work, and shipped.
- Reporting and analytics dashboard — Recharts visualisations, Excel export, and NextAuth-secured access.
- Course-catalogue and e-learning platform on Contentful with GraphQL codegen and Algolia search, rebuilt to multi-locale enterprise standards.
- Since then: helped and optimized more than six projects with Maersk's digital team to accelerate their customer experience and platforms — most recently automating how product pages are created, updated, and retired whenever anything changes in their PIM.
- Next.js
- Recharts
- NextAuth
- Contentful
- GraphQL
- Algolia
- Engagement
- Enterprise client, direct
- Brought in to
- Audit & rebuild
- Projects
- 6+ optimized
- Reach
- Multi-locale
“It is extremely satisfying to be able to give Nicklas a scope and simply redirect my focus elsewhere, because I know Nicklas is capable of remaining critical of both Delivery-Quality, and Value-Sanity. Nicklas will take any request and turn it into a functional product.”
How the engagement ran
- 01
Inherited build
A delivery that didn't hold up against what the business actually needed. We were brought in directly, after the fact.
- 02
Audit
Read the codebase end to end and wrote down what was broken, what was salvageable, and what each option would cost.
- 03
Rebuilt, not patched
Replaced what didn't work with typed, tested, multi-locale enterprise foundations instead of layering fixes on top of them.
- 04
Two platforms live
A reporting and analytics dashboard, and a Contentful-backed course catalogue and e-learning platform.
What we run ourselves.
A studio that only ships other people's software never feels its own delivery model. Everything below is ours — built on the same guardrails, routing and review gates we sell, and where the model gets stress-tested before a client ever sees it.
Sparro
sparro.dkAI-native back office for Danish SMBs
One system for the whole back office — bookkeeping, time, contracts, and payroll — with AI that reads receipts and keeps you SKAT- and moms-compliant.
- AI-powered receipt extraction turns a photo or PDF into a booked, VAT-coded entry — no manual typing.
- Bookkeeping, time tracking, contracts, and payroll in one place instead of a five-tool stack.
- MitID login via Criipto and SKAT/moms-compliant reporting built in from day one.
Invigilo
invigilo.euAI policy for schools — enforced and documented
One program the student downloads once: the school sets its own AI policy for teaching, exam rules follow the Danish executive order, and Invigilo enforces both — documenting how AI is actually used.
- Exam AI rules are enforced and documented while students keep writing undisturbed.
- Everything outside the exam window is stripped on the student's machine before anything is sent — built after the Danish DPA's April 2024 decision.
- Web dashboard for staff and audit trails, with a native desktop client doing the enforcement.
e-sign by Ceero
esign.ceero.euThe contracts independent work runs on
Draft, e-sign, and store MSAs, SOWs, NDAs, and every agreement in between — with freelancer protections built into the first draft.
- Built-in safeguards: payment protection, scope boundaries, liability cap, kill fee, IP transfer on payment.
- AI risk review: paste any contract, get clause-by-clause suggestions, missing-clause detection, and a low / medium / high score.
- E-signature, PDF export, client portal, and a 14-day free trial — no credit card.
Leasepoint
tenancyos.vercel.appProperty management for Danish commercial real estate
Lease documents in, portfolio analytics out — with automatic PDF data extraction and NPI rent regulation handled the way Danish commercial leases actually require.
- Ingests lease PDFs and extracts the data that used to be typed in by hand.
- Handles NPI-based rent regulation correctly across the whole portfolio.
- Portfolio-level analytics across every property, tenant, and contract.
AI-assisted clipboard manager for macOS and Windows
Everything you copy, kept and searchable — with AI that names each snippet so you can actually find it again.
- Full clipboard history on macOS and Windows, always one keystroke away.
- AI-generated titles via the Anthropic SDK turn a wall of snippets into a scannable list.
- Native desktop app — fast, local, and out of your way.
Free Markdown to PDF
freemarkdowntopdf.appFree browser markdown-to-PDF editor
A free browser markdown editor that exports a clean PDF in one click.
- Live split-pane preview with full GitHub Flavored Markdown: tables, task lists, strikethrough, autolinks.
- Syntax-highlighted code blocks, KaTeX math, and Mermaid diagrams render straight into the PDF.
- Runs in your browser — no upload, no account, no waiting.
Products we've helped build — on other teams.
Roles from earlier employment and agency engagements, before and alongside Ceero. The exact role is stated, nothing more is claimed, and only publicly launched work is described.
Air Greenland
Built the frontend
The airline's Umbraco-driven website, composed from drag-and-drop building blocks so editors assemble pages themselves — with a custom API integration for flight data.
EDC
Built the first version of the mitEDC app — solo, in three months
The Danish real-estate chain's mobile app, from zero to first shipped version against EDC's own backend API.
Krifa
Built the sign-up flow
A fully configurable, multi-dimensional decision tree — paths, products, and add-ons decide which questions each user is asked. Entirely CMS-driven, so the flow changes without a deploy.
Bring a product, a platform, or a rescue.
The senior engineer who shipped everything on this page is the one who'd run your project — no account managers, no handoff to juniors.