I'm Karel Malbroukou. 20+ years in software. I build AI-powered products end-to-end as founder of CultivX, and I'm AWS-certified. Right now I'm free for contract work across full-stack, mobile and cloud.
From ComfyUI workflows and timeline editors to garden planners. Concept to App Store, with real users and revenue.
An AI video maker that turns text and photos into multi-shot cinematic videos, right on your phone. I designed the ComfyUI workflows behind the generation and built the whole timeline editor.
A garden planner that helps anyone grow their own food. Backyard or windowsill. The regenerative-living side of what I do, taken from idea to live with real users.
Smart alarms that sync meetings, meds and routines so you never miss what matters.
An events & people app for discovery, check-ins and connection. Built with Bertrand Le Foulgoc.
Requirements, UI/UX, architecture, full-stack code, cloud infra, deployment, stakeholder talks. I can write the ADR and the roadmap.
I sit between engineering and the business. Discovery, roadmaps, ADRs, prioritisation, stakeholder demos. Then I build it too.
Four iOS apps shipped end-to-end. Native bridges, performance, offline-first, App Store submission. I know the hard edges of RN on iOS.
AWS-certified. Designed a new tenancy from scratch and led a full migration at a publicly listed company. Security, IAM, networking, auditing.
I treat platforms as products. Built DevEx platforms from scratch, led CI/CD vision, cut AWS account setup from 2 weeks to 30 minutes.
React, Next.js and Node across the stack. Data-rich dashboards, APIs, queues. It's the daily work. Owned from frontend to backend.
LLM integrations, AI agents and agentic workflows, ComfyUI orchestration, AI video & image generation. Shipped consumer AI, not slideware.
// Trusted on contract. Delivered via CultivX
Recent contract delivery and product roles. The full history spans 20+ years and six role-specific CVs below.
I shipped four iOS apps end-to-end on a Cloudflare-backed platform. Loovie, ZeroMiss, HykeFresh, Veggiecrush. ComfyUI orchestration, queue-based AI generation, full-stack TypeScript and React Native.
Full ownership of frontend and backend. I owned the UI design and the architecture calls. Wrote the ADRs, got them reviewed, ran demos and design walkthroughs with stakeholders. TypeScript across the stack.
I designed and built a complete new AWS tenancy. Security controls, IAM, networking, auditing. Then I led the full migration off the legacy environment, and converted .Net on EC2 to Linux containers and Lambda. Worked directly with the exec team.
I was Product Owner and Tech Lead for MYOB's CI/CD platform. I coached and tech-led the team, ran customer-discovery workshops, and built the roadmap senior stakeholders rallied behind.
AWS Lead Engineer, then PO / CX professional. I hired and led the Engineering Experience team, ran the internal Cloud portal strategy, and got funding for two new teams.
I managed the ops team and cut AWS account + VPC setup from two weeks to 30 minutes, and app deployment from 1 to 2 weeks down to a day. Trained developers on operations.
Comfortable from ComfyUI graphs all the way to TypeScript on React Native and AWS infrastructure.
I started in systems and operations, led cloud and platform work at REA, ANZ and MYOB, then stepped out on my own. Today I run two startups. CultivX for AI mobile apps, Rhizo for regenerative-living products. I take senior contract work on the side.
I know the startup hustle from the inside: small teams, fast calls, no room for waste. I'm equally happy owning code quality and security, designing an app from blank canvas to App Store, or sitting with a CEO and CTO to scope what ships next. Melbourne-based and happy to be onsite or remote.
Same career, framed for the brief. Pick the angle that matches what you're hiring for. Each one is a tailored PDF.
I'm available now for contract work. Full-stack, mobile, AI or cloud. Tell me about the problem and I'll tell you how I'd ship it.