Viktor Avelino

Frontend engineer · IBM · Toronto

I make AI tools
simple.

I build the frontend for Langflow at IBM: deployments, accessibility, and the canvas you drag nodes around on. On the side, I'm building handbill.

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By the numbers

132
merged PRs in Langflow
4+
years shipping React
3
open-source projects

Work

IBM · LangflowNow

Software Engineer · Deployment experience and an accessible flow canvas.

2025 – Present

Tech Mahindra

Software Engineer · A React point of sale for AT&T and an accessible Angular library for PNC.

2022 – 2025

Diario do Xingu

Frontend Developer · A responsive React front end for a local news portal.

2025

Unicar

Full Stack Developer · Vehicle paperwork, handled for you, on React Native and Supabase.

2022 – 2023

Open source

Coolify

Added Langflow as a one-click service and documented it.

2 merged PRs · since Jan 2026

Securo

Fixed nginx blocking attachment uploads.

1 merged PR · since Oct 2026

Projects

TypeScript · Effect · Cloudflare Workers

handbill

Open-source CLI that turns one HTML or markdown file into an immutable, unguessable link on your own domain — content-addressed URLs served by a Cloudflare Worker and R2 bucket you own, with the whole server under 750 lines.

React · TypeScript · Python

Langflow

Open-source low-code platform for building AI agents and RAG applications with a visual drag-and-drop interface, backed by Python and integrations with major LLMs.

Next.js · React · Tailwind CSS

Diário do Xingu

Digital news portal for the Xingu region in Pará, Brazil, delivering local journalism with a modern Next.js front end and Tailwind CSS styling.

React Native · Supabase · PostgreSQL

Unicar

Full-stack platform that connects users with certified expediters who handle vehicle-related bureaucracy on their behalf, with real-time features, payment integration via PagSeguro, and a mobile-first experience.