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Konstantinos Paparas logo

Software Engineer · Berlin, Germany

Konstantinos
Paparas

I build open-source software with a focus on privacy-preserving applications — front-end with Vue.js and TypeScript, Android with Kotlin, and full-stack in between. Currently leading frontend at Rotki, building tools that keep financial data private.

View selected work My journey →
01 / Experience

A decade of building

The roles and teams that shaped how I work.

2021 - Now

Frontend Lead/Infrastructure

Rotki Solutions GmbH

Working with Vue.js/Typescript, Ansible & Docker Swarm.

2018 - 2021

Open-source Contributor

rotki

Working with Vue.js/Typescript on the frontend.

2018 - 2020

Software Engineer

brainbot technologies AG

Raiden Network WebUI and part of the Raiden Light Client/Dapp team.

2015 - 2018

Senior Android Developer

arx.net S.A.

Lead of the Android client of White Mobile Cloud.

2013 - 2014

Frontend Developer

arx.net S.A.

Web development with Apache::ASP, Perl, and JQuery.

2012 - 2013

Intern

arx.net S.A.

Web development with Apache::ASP, Perl, and JQuery.

2011 - 2013

Software developer/Infrastructure

Perfect Edge Ltd

Part of a small team working with Adobe Flex/ActionScript 3/PHP/MySQL.

2004 - 2014

Bachelor's Degree

IT department, ATEI Thessalonikis

Studies

02 / Selected Work

Things I've shipped

A curated selection of projects and contributions.

Featured

rotki

open source portfolio tracker, accounting and analytics tool that protects your privacy

Vue.jsTypeScriptPythonOpen SourcePortfolio
Visit project
rotki
  • MusicBee Remote logo

    MusicBee Remote

    Android application and Plugin that allows controlling MusicBee remotely.

    AndroidKotlinC#
  • Sikorka (Android App) logo

    Sikorka (Android App)

    Application that used light client to interact with smart-contracts. Part of a proof of location project.

    AndroidJavaEthereumWeb3
  • Raiden Light Client logo

    Raiden Light Client

    JavaScript SDK, CLI and dApp to carry out fast, cheap, scalable off-chain token transfers.

    TypeScriptVue.jsEthereumOpen Source
  • Raiden WebUI logo

    Raiden WebUI

    The frontend for the original Raiden Python Implementation

    AngularTypeScriptEthereumOpen Source
  • White Mobile Cloud (Android App) logo

    White Mobile Cloud (Android App)

    White Label Cloud Backup/Restore Android application part of the White Mobile Cloud Platform

    AndroidKotlin

For more projects and contributions, visit my GitHub profile

03 / Expertise

Tools of the trade

Technologies and tools I've worked with throughout my career.

Languages

TypeScript · Python · Kotlin · Go · C# · JavaScript · Lua · Rust

Frontend

Vue.js 3 · Nuxt.js · Angular · Tailwind CSS · PostCSS · Storybook · Vue I18n · Vite · Vitest

Backend/Systems

Python CLI · Go CLI · .NET Framework · REST APIs

Mobile

Android · Kotlin · Architecture Components · Koin DI · Material Design

Tools & DevOps

Docker · Ansible · Git · pytest · Vitest · Robolectric · MockK · npm · pnpm · uv · Gradle · ESLint

Specialized

CLI Development · Cross-platform Apps · Open Source · UI/UX Design Systems · Privacy-focused Apps · Developer Tooling