Maintenance, upgrades and CI/CD
Dependency and framework upgrades with tests as the safety net, migrations of databases, hosting and frameworks without a big bang, CI/CD in GitHub Actions, Docker and Cloudflare that anyone on the team can run, monitoring that pages the right person. A suppression-list platform I led shipped blue/green with zero downtime at 300+ GB. Paste your package.json below and get an upgrade plan.
Available from November 2026 · Wrocław, Poland (CET), remote
Tests first where the money paths are, then upgrades in waves: patch and minor batches, tooling, frameworks, runtime. Codemods where React, Next.js or ESLint ship them, manual diffs where they do not. Each wave is a pull request you can revert.
Dual-write and backfill for databases, blue/green for hosting, a strangler for frameworks. Rehearsed on a copy, rolled back at least once on purpose, measured in PostHog after the cutover. The suppression-list platform moved this way with zero downtime at 300+ GB.
GitHub Actions workflows that fit on one screen, Docker builds that are reproducible, secrets in the right place, a security scan that fails the build for a reason. Coding agents work under the same gates, so speed does not cost you the rules.
Old Node.js and React, jQuery, PHP sites, C# and .NET services. Keep them running, put tests around them, move them piece by piece when the business can afford it. The C# side has its own page, see the .NET page.
Ways to work together
Scope first, then a number in writing. The call is free either way.
2 weeks
Every outdated package grouped by risk, upgraded in waves with the test suite as the gate, codemods where the framework ships them, a changelog your team can read. Node, React, Next.js, TypeScript, ESLint, Tailwind and the long tail.
Book a free call →1 week + cutover
Database, hosting or framework. A written plan with dual-write or blue/green, a rehearsal on a copy, a rollback that was tested, then the cutover at a time you choose. No weekend heroics.
Book a free call →1 week
GitHub Actions with lint, tests, security and build gates, Docker images that build the same way everywhere, preview deploys, a production deploy that is one approval away. Documented so nobody needs me to run it.
Book a free call →monthly
A fixed number of days a month: updates, security patches, alerts, the small fixes that pile up, a monthly report of what changed and what to decide. Zero bug policy: fixed or consciously closed, never parked.
Book a free call →Proof
Problem, what I did, result. Client names only where I am allowed to use them.
See also: TypeScript & Node.js · Next.js
See also: Cloudflare · Next.js
See also: TypeScript & Node.js · Full-stack & custom software
Live demo
Paste a package.json. The planner reads the version ranges, compares them with the current majors of the common packages and groups the upgrades into four waves: safe batch, tooling, frameworks, runtime. Known breaking changes get a note. Everything runs in your browser, nothing is uploaded.
Demo loading…
The version table is built into the page and dated. Unknown packages are listed for a manual check, never guessed.
How it works
You describe the product and the problem. I ask the questions I would ask on day one. If I am not the right person, I say so and point you to someone who is.
A short written plan follows: what we build first, what we measure, how we work together and what it costs. No slide deck.
The first slice ships in the first week: deployed, measured, reviewable. From there the work is paced by what the numbers say.
Fit check
Working style
A bug is fixed or consciously closed, never parked. Alerts and error tracking in every project, so I learn about problems before the client does.
Hundreds of pull requests reviewed. I review for the product and its reasons. The code comes second.
Claude Code and Codex work on main with hooks, lint and test gates. The model suggests, the criteria decide. Every PR gets a human review and AI-assisted content is disclosed.
FAQ
A free 30-minute call. You bring the problem, I bring questions. No prices on this page because scope comes first.
If I am the wrong person I will say so on the call and point you to someone better.
After you book: a calendar invite, then the call. Nothing else to fill in.
Available from November 2026 · B2B contract or employment · Wrocław, Poland (CET), remote
