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Konstantinos Paparas

Berlin, Germany
Software Engineer

Building Privacy-First Open Source Software

I'm a software engineer specializing in open-source development with a strong focus on privacy-preserving applications. My expertise spans front-end development with Vue.js and TypeScript, Android development with Kotlin, and full-stack solutions. Currently leading frontend development at Rotki, building tools that empower users to maintain financial privacy while managing their portfolios.

Timeline

My professional journey and experience

2021 - Now

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Rotki Solutions GmbH - Frontend Lead/Infrastructure

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

2018 - 2021

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rotki - Open-source Contributor

Working with Vue.js/Typescript on the frontend.

2018 - 2020

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brainbot technologies AG - Software Engineer

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

2015 - 2018

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arx.net S.A. - Senior Android Developer

Lead of the Android client of White Mobile Cloud.

2013 - 2014

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arx.net S.A. - Frontend Developer

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

2012 - 2013

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arx.net S.A. - Intern

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

2011 - 2013

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Perfect Edge Ltd - Software developer/Infrastructure

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

2004 - 2014

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IT department, ATEI Thessalonikis - Bachelor's Degree

Studies

Projects

A curated list of projects I've been involved with
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    rotki

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

    Vue.jsTypeScriptPythonOpen SourcePortfolio
    rotki.com
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    MusicBee Remote

    Android application and Plugin that allows controlling MusicBee remotely.

    AndroidKotlinC#
    mbrc.kelsos.net
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    Sikorka (Android App)

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

    AndroidJavaEthereumWeb3
    github.com/Sikorkaio/android-app
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    Raiden Light Client

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

    TypeScriptVue.jsEthereumOpen Source
    github.com/raiden-network/light-client
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    Raiden WebUI

    The frontend for the original Raiden Python Implementation

    AngularTypeScriptEthereumOpen Source
    github.com/raiden-network/webui
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    White Mobile Cloud (Android App)

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

    AndroidKotlin
    whitemobilecloud.com

For more projects and contributions, visit my GitHub profile

Skills & Technologies

Technologies and tools I've worked with throughout my career

Languages

Primary and secondary programming languages

TypeScriptPythonKotlinGoC#JavaScriptLuaRust

Frontend

Modern web frameworks and tools

Vue.js 3Nuxt.jsAngularTailwind CSSPostCSSStorybookVue I18nViteVitest

Backend/Systems

Server-side and system programming

Python CLIGo CLI.NET FrameworkREST APIs

Mobile

Native Android development stack

AndroidKotlinArchitecture ComponentsKoin DIMaterial Design

Tools & DevOps

Development and deployment tools

DockerAnsibleGitpytestVitestRobolectricMockKnpmpnpmuvGradleESLint

Specialized

Domain expertise and focus areas

CLI DevelopmentCross-platform AppsOpen SourceUI/UX Design SystemsPrivacy-focused AppsDeveloper Tooling

© 2025 Konstantinos Paparas. All rights reserved.