Vasileios Pasialiokis

full-stack engineer · en/gr

[email protected] +30 695 501 8104 github.com/vaaas

Experience.

  1. Postquant Labs Senior Full-stack Engineer

    • Delivering at sustainably high throughput via agentic development loops, gated by E2E and mutation testing, architecture, and human scrutiny.
    • Cut feature lead time down with automation, modularity, and engineering, not hallucinations or vibes.
    • Leading web3 integrations with EVM smart contracts and post-quantum cryptography.
    • Built typed, composable RxJS pipelines over heterogeneous event streams, eliminating race conditions.
    • Shipping features end-to-end with full-stack React and TypeScript.

  2. Kaizen Gaming Senior Software Engineer

    • Senior engineer on the Live Betting team, serving 2M+ daily active users across 15+ markets.
    • Led cross-team architectural initiatives and mentored junior and mid-level engineers.
    • Architected a composable, functional rendering pipeline, cutting re-render time to milliseconds.
    • Built frontend systems with Vue 3, Vuex, Tailwind, and SignalR, aggregating realtime market updates.
    • Shipped novel UX work that lead to a 35% reduction in time-to-bet and a 22% lift in player conversion.

  3. Aylo Backend Developer

    • Modernized a 15-year-old Zend Framework 1 monolith, migrating to Laravel-based microservices.
    • Enhanced content search with Elasticsearch, improving query latency and accuracy.
    • Delivered PHP/Laravel/MySQL backend services serving hundreds of thousands of users.

  4. Phenometry Full-stack Developer

    • Full-stack engineer for Phi, a reactive, cross-platform 3D CAD web platform integrating with OnShape.
    • Stack: Node.js, Express, TypeScript, Vue, PostgreSQL, three.js — from schema to WebGL rendering.
    • Drove test coverage from 0% to 80%, introduced strict TypeScript, and built CI/CD pipelines.
    • Reduced JS bundle size (20MB → 1.9MB), delivering sub-second Time to Interactive.
    • Shipped a visual refresh, tablet/pen interaction layer, and Stripe billing integration.

  5. Doppler SA Full-stack Developer

    • Full-stack development in PHP, Laravel, Lumen, Vue, SQL Server, and MariaDB.
    • Architected CI/CD pipelines on GitLab and Docker, reducing deployment time by 80%.
    • Delivered order-automation tooling and BI dashboards, saving an estimated 20 staff-hours per week.
    • Built BI dashboards and ERP extensions adopted across departments.
    • Mentored new employees in modern web development.

Open-source Contributions.

  1. Mattermost

    • Sponsored open-source contributor to the Electron desktop application, resolving Linux-specific bugs.

  2. Organisation for Transformative Works

    • Founded and coordinated the Greek translation team, growing it to 4 volunteers and delivering hundreds of thousands of translated words.
    • Managed content workflows in WordPress and built internal tooling in jQuery.
Languages
  • TypeScript
  • JavaScript
  • PHP
  • Python
  • Solidity
  • SQL
  • C
  • HTML/CSS
Frontend & libraries
  • React
  • Vue.js
  • Nuxt.js
  • Vuex
  • Tailwind CSS
  • RxJS
  • three.js
  • Vitest
Backend & infra
  • Node.js
  • Laravel
  • PostgreSQL
  • Elasticsearch
  • WebSockets
  • Docker
  • AWS
  • EVM