Context
Returned to E-TIPI (LMS B2B international) in 2026 as
Tech Lead Freelance, seven years after the end of my CTO
mandate (2018-2025). The mission: rebuild the legacy
back-office — WebForm + MVC monolith, dispersed business
logic, custom DAL — into a clean .NET 9 API
(Clean Architecture / DDD, CQRS + MediatR) + React 19
stack, migrated progressively with the Strangler
pattern (façades + feature flags, no prod breakage),
on a multi-tenant LMS serving major accounts across banking,
food-service and heritage / foundation sectors.
Classical estimate
12 to 18 months with a small team. The kind of project
that often gets shelved because the cost doesn't match
the business case.
What I did differently
-
Claude Code in the CLI as daily driver
— autonomous code generation, refactor, test writing,
with me as PM/tech lead reviewing diffs.
-
Dedicated AI dev machine running its
own background agents in parallel (continuous lint,
tests, smoke, regression checks).
-
Agentic CI/CD pipeline with auto-fix
loops on common failures — flaky tests, lint, format,
simple regressions resolved without manual touch.
-
Custom MCP servers for internal
integrations and tool-calling — plus an
AI chat assistant wired to the business APIs
(natural-language access to the data, function calling →
business endpoints).
-
Senior engineering underneath — EF Core
specifications, OpenTelemetry observability, golden-master
& pinning tests, advanced MSBuild packaging, SQL Server /
DacPac. The agentic speed sits on solid foundations.
Result
500 pages delivered in 2 months.
Code-review-fix cycle reduced by about 70%
on this kind of bulk modernization work. Internal team
rebuilt and onboarded to own the next phase.