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Erel Adoni Haller

Hi, my name is

Erel Adoni Haller

I build clean, extensible systems, and the products around them.

I'm a developer who enjoys the whole stack - from database schema to the last pixel of an animation. I care most about products that feel calm, fast, and obvious to use.

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About

I'm a developer who enjoys the whole stack - from database schema to the last pixel of an animation. I care most about products that feel calm, fast, and obvious to use.

I have a strong systems mindset and a focus on clean, extensible systems, balancing engineering quality with real-world constraints while collaborating across teams.

Lately I've been building AI-assisted software - experimenting with coding agents and automation to find real use cases and turn ideas into working products.

When I'm away from the keyboard you'll find me reading, cooking, drawing, gaming, or chasing a good cup of coffee.

Technologies I work with

  • Python
  • TypeScript
  • React
  • Next.js
  • PostgreSQL
  • Docker
  • Kubernetes
  • AWS
  • Terraform

Experience

  1. 2026 - Present

    AI Builder · Independent

    • Building AI-assisted software to find real use cases and turn ideas into working products.
    • Designing and shipping practical systems end to end - backend logic, UI flows, data models, and deployment.
    • Continuously evaluating new AI tools, coding agents, and developer workflows, and applying them to real projects.
    • TypeScript
    • Next.js
    • Python
    • PostgreSQL

  2. 2024 - 2026

    Software Developer · ironAlgo

    • Built extensible, object-oriented systems that became the foundation for quantitative workflows.
    • Developed reusable abstractions and internal frameworks, improving usability 5x by standardizing shared backend logic.
    • Built CI/CD and automation frameworks as an independent initiative, cutting team workload by ~10 hours per week.
    • Worked primarily in Python on Linux, Docker, Kubernetes, and DynamoDB in a fast-paced startup.
    • Python
    • Docker
    • Kubernetes
    • DynamoDB

  3. 2020 - 2023

    DevOps Engineer · Eitan Medical

    • Led the migration of company infrastructure from on-prem to cloud, improving security and stability by ~30%.
    • Introduced Docker and Kubernetes workflows for systems handling patient data, raising project efficiency ~75%.
    • Built a secure internal signing mechanism that cut release and distribution time by a full working day.
    • Created automation and utility tools for multiple dev teams in a regulated production environment.
    • Docker
    • Kubernetes
    • AWS
    • Azure
    • Terraform

Featured Projects

  • AppDate

    An event RSVP platform with authentication, database-driven workflows, and a WhatsApp messaging flow, deployed to production.

    • Next.js
    • TypeScript
    • PostgreSQL
    • WhatsApp API

  • Mise

    A bilingual recipe-management app with structured ingredients, equipment, and instructions, plus a unit-conversion engine.

    • SvelteKit
    • TypeScript
    • PostgreSQL

  • Windows dotfiles

    PowerShell dotfiles for Windows that bootstrap a machine from scratch, including app installs via winget.

    • PowerShell
    • winget

  • Sorting Visualizer

    A visual interpretation of how sorting algorithms work, animating every comparison and swap.

    • JavaScript
    • HTML
    • CSS

  • Rental Assistant

    A Chrome extension that sends customized message templates to apartment advertisers to speed up the apartment search.

    • JavaScript
    • Chrome Extension

  • Dark WhatsApp

    A complete, highly customizable dark (and light) theme for WhatsApp Web. Co-authored.

    • Stylus
    • CSS
    • UserCSS
View full archive

Get in touch

I'm open to interesting projects and conversations. My inbox is always open.

Send a message
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