Freelancer profile translated to English.

Description

I develop Web3, payment, and checkout infrastructure for startups, merchants, and digital products.

My focus is on Solidity, React, Node.js, Web3, API integrations, wallet flows, and stablecoin payments.

I am the founder and lead developer of VantaraPay, a live-tested Web3 checkout and settlement infrastructure that emerged from the real e-commerce operations of GoldSilverStuff UG.

What I can implement:

- Web3 Checkout and Wallet Login

- MetaMask / Coinbase Wallet / WalletConnect Flows

- Solidity / Hardhat Smart Contracts

- React Payment Apps and Dashboards

- Node.js APIs, Webhooks, and Backend Automation

- Stablecoin Payment Flows with USDT / USDC

- Payment Confirmation, Invoice Logic, and Reconciliation

- Security Hardening for Sessions, Checkout Status, and Payment Flows

- Smart Contract Debugging and Technical Rescue Projects

I haven't just built demos, but real systems: GoldSilverStuff E-commerce, Wallet Login, Web3-Direct Checkout, VantaraPay Merchant Center, Payment Flow, API/Webhook Structures, Invoice Emails, and Settlement Routing.

If a Web3, Wallet, Checkout, or Payment Flow is broken, unfinished, or unclean, I can help debug it quickly, stabilize it, or implement it close to production.

Languages

German
Native or bilingual
English
Fluent
Russian
Fluent

Workplace preferences

Remote only

Primarily works remotely

Engesser GmbH
Training Cutting Machine Mechanic
ARTS AND CRAFTS
September 2012 - March 2016 (3 years and 6 months)
Geisingen, Germany
Completed professional training as a cutting machine mechanic, specializing in turning and milling technology.
Dätwyler Fertigungstechnologie
Programmer/Setup Specialist for Turning/Milling Centers
ARTS AND CRAFTS
November 2016 - April 2023 (6 years and 5 months)
Bern, Switzerland
Skilled worker operating complex turning and milling centers for medical technology, aerospace, automotive, etc. Fanuc and Sinumerik controls
Goldsilverstuff UG (haftungsbeschränkt)
Software Developer
E-COMMERCE
March 2025 - Today (1 year and 5 months)
Spaichingen, Germany
Founder and full-stack/Web3 developer of GoldSilverStuff UG and the connected VantaraPay payment infrastructure.

Built and operated the GoldSilverStuff ecommerce stack, including product flows, dynamic pricing logic, wallet login, Web3 checkout, customer/order flows, invoice/payment confirmation emails and backend automation.

Developed VantaraPay as a merchant crypto checkout and settlement layer from this live commerce environment, including React payment pages, Merchant Center, API/webhook-ready backend flows, MetaMask/Coinbase/WalletConnect-style wallet integrations, Solidity/Hardhat smart contract logic, signed payment manifests, settlement routing, session security and payment state handling.

The system has processed real USDT/Polygon ecommerce payments with invoice, wallet and transaction-hash proof.
JavaScript Smart Contracts Ethereum Blockchain Payment Integration

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Vocational Training
Engesser GmbH
2016
Ausbildung erfolgreich absolviert, Zerspanungsmechaniker (Dreh- Frästechnik)

Anton Becker

Web3 Payment & Solidity Developer

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