Work

Case studies grouped by practice area: what the situation was, what I decided, what came of it. Client names withheld; domains kept.

Telco · Client · 2024 — nowReplacing a telco's order management while it keeps taking ordersI lead the teams replacing a legacy B2B ordering system with .NET microservices, one service line at a time, while the old system keeps running.2teams led, new platform and legacy10+engineers0disrupted live order flows Corporate learning · Internal platform · 2026 — nowAI-nativeOne engineer, every layer, three months to productionAn internal training platform I built alone with AI: backend, frontend, database, DevOps and operations, live in three months and running without trouble since.3months to production400people using it2000+automated tests

Architecture & integration

Service boundaries, platform foundations, gateways and the contracts between systems.

Telecom · Solution design · 2026Location tracking for a mobile operator's business customersThe architecture for a platform that lets companies locate their employees' lines and get alerts at geofences, running entirely inside the operator's data centre.Banking · Solution design · 2026A developer portal for a bank's partner APIsThe approach for opening a bank's APIs to business partners: onboarding, sandbox, go-live approval and fees, and a review of the bank's own high-level design.Developer tools · Open source · 2026 — nowAI-nativeA golden path for enterprise .NET, not another frameworkGoldpath: composable packages, templates and checks that give .NET teams the plumbing every enterprise system needs, with one manifest as the source of truth.23packages13architecture decisions1100+tests

Workflow orchestration

Long-running processes, asynchronous callbacks, human tasks and bulk operations.

Telco · Client · 2025 — nowOne process per order, and the people in itEach product order runs as its own workflow: downstream systems answer late, people step in at hundreds of points, and an order can still be cancelled while it runs.

Domain modeling & rules

Catalogs, industry standards and business rule engines.

Telco · Client · 2025 — nowBusiness rules as data, one engine for UI and backendHundreds of eligibility, compatibility and validation rules kept as data and evaluated by one engine, so the screen and the server always give the same answer.Telco · Client · 2025 — nowA product catalog on TM Forum's modelWhat can be sold, how it is priced and when it goes on sale is defined in one catalog aligned with TM Forum, with a lifecycle from design to retirement.

Legacy modernization

Running old and new side by side, keeping data in step, and cutting over in phases.

Quality & test strategy

Test strategy strong enough to decide what reaches production.

Developer tools · Open source · 2026 — nowAI-nativeA mock server that is done only when it matches the referenceMockifyr, a self-hosted API mocking and integration sandbox in .NET. Every behaviour it copies is checked against a running WireMock before it counts as done.63releases1500+tests15architecture decisions

Delivery & operations

CI/CD, environments, logging, backups and running what was built.

Corporate learning · Internal platform · 2026 — nowAI-nativeOne engineer, every layer, three months to productionAn internal training platform I built alone with AI: backend, frontend, database, DevOps and operations, live in three months and running without trouble since.3months to production400people using it2000+automated tests

Open source

The code behind the practice, on GitHub.

Goldpath2026

AI-native, spec-driven enterprise .NET accelerator — composable libraries, templates, AI skills and guardrails on a paved golden path. Not a framework.

C# GitHub

SpecDrift2026

Deterministic spec lint for manifest-driven golden paths — validates cross-artifact invariants and detects manifest-vs-repo drift, served over MCP. LLMs call it; it never calls an LLM.

ci-cddeterministicdeveloper-toolsdrift-detection

C# GitHub

Mediant2026

The free, modern CQRS mediator for .NET — Result pattern, pipeline behaviors, Native AOT and OpenTelemetry. A drop-in, MIT-licensed alternative to MediatR.

clean-architecturecqrscsharpddd

C# GitHub

Mockifyr2026

Enterprise API mocking and integration sandbox platform — self-hosted, multi-protocol, one container.

api-mockingapi-simulationenterprisegraphql

C# GitHub

QlipLab2025

Smart clipboard & text vault for everything you copy or type.

TypeScript GitHub