01Harbor Arrival Forecaster
Port-call predictor for a container terminal — arrival windows cut idle mooring time by 31%.
- Next.js
- TimescaleDB
- MQTT
- PostgreSQL
Work / technical case studies
Show the system.
Forty shipped systems since 2020 — the conditions, the stack, and what changed once they ran. Full case studies follow when clients clear the details.
The register40 projects · 2020–2026
01
02Wind Farm Balance Board
Live balancing dashboard for a wind-farm operator — 40k telemetry readings a second.
- React
- ClickHouse
- WebSockets
- Grafana
03Care Network Triage
Triage queue for a regional care network — average wait time down 44%.
- Next.js
- Supabase
- WebSockets
- PostgreSQL
04Digital Loan Origination
Loan origination flow, application to offer in 12 minutes — 8k applications a month.
- Next.js
- NestJS
- PostgreSQL
- Redis
05Shared Checkout Network
Headless checkout shared by a co-op of 300 Nordic merchants, one payment flow.
- Next.js
- Stripe
- GraphQL
- Cloudflare
06Cold Chain Route Optimizer
Route optimizer for cold-chain trucks — fuel spend down 9% across the fleet.
- Python
- PostGIS
- PostgreSQL
- Kafka
07Citizen Services Login
One login for 14 state e-services — 120k citizens migrated without a desk visit.
- Next.js
- Keycloak
- PostgreSQL
- Azure
08Live Sports Player
Low-latency live player for a sports broadcaster — 2.1s glass-to-glass.
- React
- WebRTC
- Go
- Cloudflare
09Stevedore Planning Board
Port operations board that retired a 40-year-old spreadsheet regime.
- React
- NestJS
- PostgreSQL
- WebSockets
10SCADA Alarm Room
SCADA overlay unifying three turbine vendors into a single alarm room.
- Go
- MQTT
- TimescaleDB
- Grafana
11Physio Exercise Diary
Exercise diary for physiotherapy clinics — adherence up 38% in three months.
- React Native
- Expo
- Supabase
- TypeScript
12Flash-Sale Engine
One-minute flash-sale engine for a Baltic marketplace — 41k buyers on launch day.
- Next.js
- Redis
- Kafka
- Stripe
13Freight Capacity Exchange
Freight exchange with live capacity matching between carriers and shippers.
- Node.js
- Elasticsearch
- PostgreSQL
- WebSockets
14City Open Data Portal
Open-data portal with a SQL console — city datasets queryable by citizens.
- Next.js
- ClickHouse
- DuckDB
- Vercel
15Offline News Reader
Offline-first news reader for a morning paper — p50 cold start 640ms.
- React Native
- Expo
- SQLite
- GraphQL
16Instant Points Ledger
Loyalty ledger settling points instantly across 60k POS terminals.
- Go
- PostgreSQL
- Kafka
- Redis
17Vessel Position Tracker
AIS vessel tracker for a fisheries inspectorate — live plots over nautical charts.
- React
- MQTT
- TimescaleDB
- MapLibre
18District Heat Forecasting
District-heat demand forecasting — fuel spend down 12% in the first season.
- Python
- scikit-learn
- FastAPI
- PostgreSQL
19Specialist Referral Forms
Structured referral forms for specialist clinics — 92% auto-triaged on intake.
- Next.js
- react-hook-form
- PostgreSQL
- Azure
20Multi-Tenant Accounting Core
Accounting core for a SaaS vendor — 900 tenants on one cluster.
- NestJS
- PostgreSQL
- Redis
- Docker
21Haulier Dispatch Console
Driver app and dispatch console for a haulier — empty kilometres down 17%.
- React Native
- Expo
- Node.js
- WebSockets
22Retail Analytics Hub
Retail analytics across 120 stores — daily dashboards on every desk by 07:00.
- Next.js
- dbt
- ClickHouse
- Metabase
23Route Weather API
Route-weather API for ferry operators — 98.4% uptime through winter storms.
- Go
- PostgreSQL
- Redis
- Terraform
24Podcast Platform
Podcast CMS and analytics for a radio group — 1.9M monthly plays.
- Next.js
- Sanity
- Supabase
- Cloudflare
25Nordic Tender Search
Tender search across Nordic public registries — one query, four countries.
- Next.js
- Elasticsearch
- Python
- PostgreSQL
26Bulk Carrier Chartering
Charter marketplace for bulk carriers — 400 fixtures a month.
- Next.js
- NestJS
- PostgreSQL
- Stripe
27Grid Fault Locator
Grid fault locator on phasor data — outage pinpointing in seconds, not hours.
- Go
- TimescaleDB
- Grafana
- MQTT
28Encrypted Video Therapy
Video therapy platform with encrypted rooms — 3k sessions a week.
- WebRTC
- Node.js
- PostgreSQL
- Redis
29Café Point of Sale
Cloud POS for cafés — 1,100 tills live, offline-safe through outages.
- React
- Node.js
- SQLite
- WebSockets
30Loan Quote Engine
Loan comparison engine quoting nine lenders in 300ms.
- Next.js
- NestJS
- Redis
- PostgreSQL
31Live Bus Positions
Real-time bus positions for a regional authority — 1.2M position events a day.
- React
- MQTT
- MapLibre
- Next.js
32Port Cargo Booking
Cargo booking portal for a port operator — paperwork cut from days to hours.
- Next.js
- NestJS
- PostgreSQL
- Docker
33Reader Paywall Engine
Reader-revenue paywall engine for a newspaper group — 2.9% conversion.
- Next.js
- Stripe
- Sanity
- Supabase
34Pharmacy Stock Network
Pharmacy stock-sharing network — expiry waste down 23%.
- React Native
- Node.js
- PostgreSQL
- GraphQL
35Turbine Siting Tool
Turbine siting tool layering noise, wind and grid maps for developers.
- Next.js
- Python
- PostGIS
- MapLibre
36Crew Rotation Portal
Crew rotation and certification tracker for a shipping line — audits in hours.
- Next.js
- Supabase
- PostgreSQL
- Docker
37Grocery Slot Booking
Grocery delivery queue with live slot booking through pandemic peaks.
- Next.js
- Redis
- PostgreSQL
- WebSockets
38Small-Town Web Platform
Web platform for 40 small towns — one CMS, forty voices.
- Next.js
- Sanity
- Vercel
- PostgreSQL
39Newspaper Archive OCR
Archive digitization pipeline — 60k pages OCR’d into a searchable index.
- Python
- Tesseract
- Elasticsearch
- FastAPI
40Offline First-Aid Guide
Offline first-aid guide app — 300k downloads, usable without signal.
- React Native
- Expo
- SQLite
- TypeScript
Open source / shared code
The stack above runs on code we share
Much of what powers these systems is open — our contributions to open-source projects on GitHub help companies everywhere build faster, and the projects above are some of the beneficiaries.
Constraints, architecture decisions, technologies and delivery lessons.
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