Alberto Schiabel

@jkomyno · DX Software Engineer · Speaker · Computer Scientist

@jkomyno

DX Software Engineer · Computer Scientist

Conference Speaker

Tbilisi, Georgia

Building apps for the AI-first era.
Previously shipped tools for 1M+ database developers.

Warehouse Route Optimization

Rust/WASM pathfinding engine that cut warehouse walking distance by 47-83%. Interactive map, real order data.

View case study →

Lambda Days 2024

Speaking on Effect, a composable functional framework for TypeScript. Fiber-based concurrency, resource safety, built-in tracing.

View talk →

Projects

Selected open-source tools, investigations, or enterprise platforms I've built.

package-resolution

Systematic investigation of how ESBuild, Rolldown, Vite, Webpack, and RsBuild resolve conditional exports in package.json. Motivated by bundler issues integrating the Prisma 6/7 Query Compiler (WebAssembly) with metaframeworks that each use their own bundlers and configuration.

Bundlers JavaScript TypeScript

uniku

Universal TypeScript ID generator that unifies UUID v4/v7, ULID, CUID2, Nanoid, and KSUID under a single ESM-only package. Tree-shakeable, ~1KB per format, up to 85x faster than alternatives, works across Node.js, Deno, Bun, and edge runtimes.

TypeScript Unique ID Generation Library

CZ Fuel Pipeline Optimization

Built the data and execution layer for a MILP-based optimizer that plans multi-product pipeline flows, tank constraints, and train imports for CEPRO with CTU Prague researchers.

Mathematical Optimization MILP Python

View all projects →

Experience

Selected roles in developer tooling, AI infrastructure, and open source.

May 2025 – Present

Software Engineer · Composio (opens in new tab)

contract remote

AI agent tooling platform. CLI and SDK for 1000+ tool integrations via function calling, open-source.

– Built the Composio CLI from scratch with Effect.ts and Bun, designed for AI agents and humans alike. Progressively replacing the web app for core workflows: OAuth2 login, project discovery, remote tool execution, and type-safe codegen across 1000+ supported apps
– Shipped features across the open-source TypeScript and Python SDKs powering 1000+ LLM tool integrations
– Implemented server-to-server OAuth2 authentication flows and backend services for the Composio platform

TypeScript Effect.ts Bun Python Next.js AI SDK

→ ComposioHQ/composio

Apr 2022 – Present

Software Engineer · Prisma (opens in new tab)

contract remote

ORM internals, Rust-to-Wasm compilation pipeline, open-source. Features shipped to ~1M developers.

– Ported bloated, I/O-heavy Rust modules to TypeScript-friendly Wasm libraries in v5 and v6, shipping Driver Adapters from MVP to GA and enabling Prisma on Cloudflare Workers and Vercel Edge
– Led the Prisma 7 release, the largest architectural refactoring in Prisma's history, surfacing breaking changes that even EMs and PMs had lost track of. Designed and implemented prisma-client, the new default Client generator, born from my bundler/metaframework resolution research
– Pitched, designed, and implemented prisma.config.ts, a central TypeScript-first configuration system later adopted for Prisma's paid products like Prisma Postgres
– Write the core infrastructure of Prisma Next, a full TypeScript rewrite that enables long-requested features like strongly-typed JSON columns with Standard Schema support
– Interviewed 30+ candidates and onboarded 4 engineers into a team that scaled between 2 and 11 people over multiple org reshuffles

Rust WebAssembly TypeScript Node.js Cloudflare Workers

→ prisma/prisma → prisma/prisma-engines → prisma/prisma-next → jkomyno/package-resolution

Jan 2023 – Nov 2023

Software Engineer · Czech Technical University (opens in new tab)

contract remote

MILP-based optimizer for Czech Republic's national fuel pipeline network

– Built the data and execution layer for a MILP-based optimizer scheduling petroleum across 1,100 km of pipeline
– Modeled multi-product pipeline flows, tank constraints, and train imports with Python
– Reduced monthly planning time from days to hours

Python Flask Celery Oracle DB SCIP

→ Case study

Jun 2019 – Aug 2019

Full-Stack Developer · Pagination (opens in new tab)

internship Padua, Italy

Bachelor's thesis internship, distributed serverless architecture on AWS

– Designed and implemented a distributed serverless architecture on AWS using Go, Protobuf, and Redis Cluster
– Built an interactive monitoring dashboard with React and TypeScript

Go Protobuf Redis AWS React TypeScript

May 2018 – Mar 2022

Software Developer · Vivaldi United Group (opens in new tab)

contract remote

Sole engineer on enterprise warehouse logistics platform with route optimization

– Sole engineer on a 14-package warehouse logistics platform, cutting walking distance by 47-83% through route optimization
– Evolved the optimization engine through three generations: TypeScript, C++/N-API, Rust/Wasm
– Streamed and processed 100+ MB CSV files between browser and backend via gRPC
– Built controller apps in Qt/C++ and Haskell for proprietary hardware

TypeScript Rust WebAssembly C++ React Node.js gRPC MSSQL

→ Case study

Feb 2017 – Sep 2017

Founding Engineer · Skydreamer

co-founder remote

Group travel app that turns traveling with friends into a "Swipe and Match" game. TechCrunch Disrupt 2017

– Led development of the first React Native prototype, including Firebase-driven OAuth2 login and in-app group chats, navigating ambitious ever-changing design choices and tight deadlines
– Interviewed and onboarded 10+ international engineers in a fully remote team

React Native Firebase JavaScript

Jul 2016 – May 2019

Software Developer · Workteam (opens in new tab)

employed Venice Area, Italy

One-person R&D department: prototyped new product ideas while maintaining full-stack platforms for smart building management and digital process automation

– Ran all R&D for the company, experimenting with technologies and product concepts to find new market opportunities
– Built and maintained full-stack web platforms for smart building management and digital process automation (DPA); part of this work eventually became VirtusFlow
– Introduced automated testing to fix 1000+ bugs in a legacy codebase

Node.js TypeScript Python PostgreSQL Redis

.experience-panel { grid-template-rows: 1fr !important; } .experience-panel > div { opacity: 1 !important; } .toggle-indicator { display: none !important; }

Speaking

Conference talks and meetup presentations on TypeScript, Rust, and developer tools.

19 talks & workshops 10+ countries Rust · Wasm · TypeScript · DX

Armada JS Talk

Skills

Selected languages, frameworks, and tools I reach for when building. I've used many more over the years; these are the ones that stuck.

Current

TypeScript Effect SQL Node.js + Bun Cloudflare Workers @ai/sdk Claude Code

Rusty (shipped before, would need to catch up)

WebAssembly Rust Python 3 Keras C++17 Redis AWS Lambda Haskell React

Tools

Self-contained interactive utilities I've built for everyday use.

TypeScript Playground

Write, compile, and run TypeScript in the browser. Powered by Monaco Editor and almostnode.

Monaco Editor almostnode Web Worker

Unique ID Generator

Generate and explore unique IDs: UUID v4/v7, ULID, CUID2, Nanoid, KSUID. Powered by my library uniku.

uniku crypto.getRandomValues

View all tools →

Gists

Code snippets and idioms I keep coming back to.

splitmix32.ts

export function splitmix32(seed: number):
  () => number /* [0, 1) */ {
    let state = seed | 0;
    return () => {
      state |= 0;
      state = state + 0x9e3779b9 | 0;
      let t = state ^ state >>> 16;
      t = Math.imul(t, 0x21f0aaad);

typescript

Splitmix32: A Fast Seeded PRNG

A 32-bit seeded pseudorandom number generator derived from MurmurHash3's finalizer. Deterministic, fast, and good enough for simulations that need reproducibility — not cryptography.

speed-up-video.sh

SPEED=1.15
INPUT="input.mp4"
OUTPUT="output.mp4"

ffmpeg -i "$INPUT" \
    -filter_complex "[0:v]setpts=PTS/${SPEED}[v];[0:a]atempo=${SPEED}[a]" \
    -map "[v]" -map "[a]" \
    -c:v libx264 -preset fast -crf 22 \

bash

Speed Up Video with ffmpeg

Speed up or slow down video and audio tracks together using ffmpeg, with configurable speed multiplier and high-quality H.264 re-encoding.

View all snippets →

Reviews

What colleagues and collaborators have said about working with me.

Alberto, you consistently bring boldness, clarity, and thoughtfulness into the room. You hold us accountable, you are precise in your words, and you always read the room with grace. Thank you for embodying the spirit of open, constructive dialogue!

— Nitin Gupta, 2025

Alberto helped me land my first internship and got me promoted to a research & development software engineering role. His leads and interview tips have been invaluable to me. Even though he's younger than me, Alberto has plenty of insights to offer.

— Nicolò Bertocco, 2022

Alberto is an extremely knowledgeable software developer. He is also a collaborative engineer with lots of insight that goes beyond development. He has a keen eye for detail and is always looking to improve his knowledge. I highly recommend Alberto!

— Marcin Walendowski, 2017