dcblls

Senior Frontend Developer

I'm a passionate Smart Contract & Web3 Engineer with 15+ years of experience in software development and a strong focus on blockchain since early 2022.

Over the past years, I’ve developed and deployed secure, production-grade smart contracts using Solidity, Hardhat, and Foundry, primarily for DeFi and cross-chain ecosystems. My work includes writing thoroughly tested contracts (100% coverage), leveraging static analysis tools like Slither, and collaborating with security auditors to ensure robust, audit-ready code.

I’ve integrated protocols like Safe multisig, Chainlink CCIP, and cross-chain messaging bridges, while also contributing to high-level architecture decisions in remote-first, crypto-native teams. I'm comfortable using OpenZeppelin, Solidstate, and other community-driven frameworks.

With a background in full-stack engineering (React, Angular, Node.js), DevOps, and technical leadership, I bring a well-rounded skillset to blockchain projects – from idea to mainnet.

Currently, I’m particularly interested in zero-knowledge proofs, account abstraction, and improving Web3 UX. I’m looking to join innovative teams building meaningful decentralized applications with a focus on security, scalability, and usability.

Let’s connect and push the boundaries of Web3 together.

Experience: 11 years

Yearly salary: $192,000

Hourly rate: $120

Nationality: 🇩🇪 Germany

Residency: 🇩🇪 Germany

Experience

Software Engineer & Consultant

Freelancer

2024 - 2025

Senior frontend engineer

Digistore24

2019 - 2024

Planning, conception and implementation of various projects within the framework of our own eLearning product called Digibiz42, which is based on Angular and AngularJS. Planning, conception and implementation of various projects as part of a website builder as a service based on TypeScript, Vanilla JS and Handlebars. Planning, conception and implementation of component libraries based on Angular and Nx. Extensive refactorings of a Symfony SSR application (Coachannel) to a SPA. Extensive refactorings in Website Builder from JS to TypeScript. Implementation of various testing frameworks, mainly Cypress for integration tests and mainly Jest for unit tests. Process optimization and QA assistance through continuous delivery and integration with GitHub, GitHub Workflows, Docker and Google Cloud Engine. - Technical conception and implementation - Recruitment - Consultant

Tech & Project Lead (Full Stack)

CTO Global

2016 - 2019

Planning, design and implementation of various projects as part of our own Business Intelligence as a Service product based on AngularJS. Planning and implementation of microservices for the automated creation of PDFs for various email marketing campaigns based on Node.js, Protractor, Selenium, ImageMagick and PDFKit. Search engine optimization based on Angular 4+. Planning and implementation of process optimization and QA assistance through continuous delivery and integration with Docker and Bamboo. Planning and implementation of agile development processes within the framework of SCRUM and Kanban. - Team & Tech Lead - Technical project management - Recruitment - Consultant

Tech Lead (Full Stack)

Wiethe

2015 - 2016

Responsibility and management of eCommerce fulfillment for various customers in the textile and fashion industry. Redesign, optimization and updating of the in-house store software. Planning, conception, implementation, controlling and launch of internationalized store solutions within Europe. - Team Lead - Technical project management - Recruitment - Consultant - Trainer in the field of IT specialist application development

PHP Developer

basecom

2011 - 2015

Responsible for the integration of deployment strategies in the area of Magento eCommerce. Conception, implementation and support of countless customer projects. Responsible for the creation, maintenance and optimization of server and software architectures around the Zend Framework and Magento in conjunction with Varnish. Organization and implementation of training and further education measures for designers and graphic designers on the topics of modern web development. Previous roles at basecom: Team Lead & Full Stack Developer, TYPO3 Content Management System

Traineeship as an IT specialist in application development

basecom

2008 - 2011

Further development of the existing high traffic application stayblue.de. Intensive and pronounced optimization of the object-oriented PHP framework Maintenance of the merchandise management systems and expansion with a contract system for customer and domain management. The focus of all applications was on PHP and design integrations.

Internship programming and web development

basecom

2004 - 2008

Development of the web-based CRM and planning of a web-based domain and contract system. Maintenance and further development of stayblue.de. Conversion of the existing PHPBB framework into an object-oriented custom PHP framework.

Skills

agile

angular

aws

blockchain

dapp

defi

docker

erc-165

erc-20

erc-721

ethereum

evm

freelance

front-end

full-stack

git

hardhat

infrastructure

javascript

mongo

nestjs

nextjs

nginx

node

nosql

openzeppelin

postgres

rabbitmq

react

redis

remote

scrum

seo

serverless

smart-contract

solidity

tailwind

tech-lead

typescript

web3

work-from-home

english

german

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