21 pages · PDF
From vibe-coding to production software with AI
A free guide: context over task, plan mode, small steps, quality and security. The foundation the AI Developer course builds on.
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AN EDUCATION PLATFORM FOR DEVELOPERS
Two courses. The craft and the speed.
ReactivDevs is practical education for developers who want to write production-ready software and use AI effectively. No theory for the drawer, only what you actually use at work.
ONLINE COURSES
Pick your course
RECOMMENDED START
PRODUCTION READY FRONTEND DEVELOPER
PRE-ORDERThe course that came out of a hundred 1:1 mentoring sessions. Git, tests, the API layer, architecture, CI/CD and interview prep. Everything your employer expects and no YouTube tutorial tells you. A certificate at the end.
Free course sample (PDF)$130
AI DEVELOPER
IN PRODUCTIONAn online course for developers: build production software faster with AI, the senior way. Stack-agnostic, frontend and backend. Includes the AI Dev Kit, a ready-made repo with skills and agents. A certificate at the end.
Free course sample (PDF)$130
THE SEQUENCE
How they fit together
Production Ready Frontend Developer teaches the craft: git, tests, architecture, CI and how to defend your own decisions. AI Developer teaches you to do that craft several times faster with AI. You can take them in any order, but this is the logical sequence. Without the craft, AI just produces the mess faster.
THE FORMAT
What a lesson looks like
Video wherever it is worth watching me work: I share my screen and talk to one specific person, not an audience. I explain why, not just how, exactly the way I run my mentoring. The rest is dense downloadable material you come back to whenever you need to check something.
DOWNLOADS
Free materials
11 pages · PDF
Production Ready Frontend Developer: course sample
The full course outline plus excerpts from four lessons, including the API layer, testing and salary negotiation.
DOWNLOAD10 pages · PDF
AI Developer: course sample
The full course outline plus excerpts from four lessons, including the anatomy of a skill and the review checklist for AI generated code.
DOWNLOADRESULTS FROM 1:1 MENTORING
What the people I mentored say
20+
clients in 1:1 mentoring
100+
1:1 lessons delivered
28
sessions with the longest client
Long
Senior full-stack developer · 16 sessions
- Starting point
- Broad awareness of new tech, but plenty of it he had never done for real. His company had no process.
- What we worked on
- A testing strategy from unit tests to E2E in Playwright, GitHub Actions, secret management, clean code and clean architecture, microfrontends, state management. Plus soft skills: negotiating pay, practising 1:1s and conflict situations.
- Outcome
- A step up to senior level and, above all, confidence. He can defend his decisions and proposed process changes to his own company.
Honza
Mid-level frontend developer · 12 sessions
- Starting point
- He knew React but lacked confidence. At work they pushed logic onto the frontend through Next.js even where it did not belong.
- What we worked on
- A mock interview, React deep dives, the Next.js versus Vite and React Query decision, MSW, his own app in a monorepo, pair programming on data fetching, design patterns and TypeScript, preparation for the coding task.
- Outcome
- A new job as a strong mid-level developer and a significantly better salary.
Martin
Junior React developer · 22 sessions
- Starting point
- Coming from the jQuery world. Hand-written fetches, almost nothing on authentication, self-taught from tutorials.
- What we worked on
- React Query and a generated client from Swagger, login and logout through mutations, react-hook-form and Zod, a generic Input via useController, three sessions on git alone, CI/CD and GitHub Actions, testing, Firebase, Next.js, interview preparation.
- Outcome
- A complete move from jQuery to React, the right tech stack and a real grasp of the principles. A 180-degree turn and a well-paid junior React developer job, even in this market.
Tobiáš
Entry level, moving off Drupal · 10 sessions
- Starting point
- Drupal, CSS and JavaScript. React from absolute zero.
- What we worked on
- Starting a project in Vite, hooks and custom hooks, react-hook-form and Zod, his own FormInput component, React Router and layouts, Swagger and Orval, login and logout, pipelines. Plus working with Cursor.
- Outcome
- He built an app from scratch, got the React fundamentals down and went looking for a more challenging role.
Zuzka
Junior developer, moving off Angular · 6 sessions
- Starting point
- An Angular background, no React at all. She wanted to stop second-guessing herself and gain confidence.
- What we worked on
- Getting into React and state, an Angular versus React comparison, interview preparation, Orval and React Query instead of a hand-written client, query keys and invalidation, working with git.
- Outcome
- Production-ready fundamentals, real confidence and a new job. Genuinely sharp.
WORKING TOGETHER 1:1
Would you rather do it with me live?
CONSULTATION
5 spots left
You have a concrete problem and you need it solved. You tell me what you're dealing with and I tell you whether I can help and how many hours I estimate it takes. Then we solve it: AI development and Claude Code orchestration, architecture, code quality, frontend (React) and backend (Node.js, Prisma). You pay by the hour, only for what you actually need.
$85 / 1h
MENTORSHIP
5 spots left
The first 30 minutes are free: we find out where you stand and pick the topics (React, AI and agents, spec-driven development, career). Then 3 weeks: three 1:1 sessions of 60 minutes, one code review and support over messages on workdays. At most 5 people at a time.
FIRST 30 MINUTES FREE
$300or 3 × $100