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Viktor Ziegler

@viktorziegler

Software engineer building Rust AI agents and production-grade RAG tooling.

Paraguay
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At Mercor, I developed rubrics and task alignments to assess AI-generated code solutions and boost model performance. I’m currently building AI agents and production-grade tooling infrastructure across Rust and Python.

I built production-grade Agentic RAG with custom ingestion, hybrid search, evaluation, observability, and multi-step agents. I also built a Rust agent with dynamic tool calling, async workflows, and Kraken Futures execution.

At BitBlockWizard, I contributed to a Polygon NFT collection launch and built a Node.js backend with Web3 authentication, a Vue.js frontend, and MetaMask wallet connection. Earlier, at Plentymarkets GmbH, I contributed to a Java/GWT shipping client and optimized SQL queries and PHP APIs to reduce order-fetching duration and costs.

Experience

Work history, roles, and key accomplishments

BI

Full-Stack Engineer

BitBlockWizard

Jan 2022 - Dec 2023 (1 year 11 months)

Contributed to Polygon NFT collection launch with uplevel/burn mechanics. Built Node.js backend with Web3 auth and Vue.js frontend with MetaMask integration.

SG

Frontend Engineer

Starke GmbH

Jan 2021 - Sep 2022 (1 year 8 months)

Migrated legacy jQuery codebase to Vue.js for DMS web client and added Microsoft OAuth 2.0 for Azure prep. Integrated PDF viewer component with tagging.

PG

Software Engineer

Plentymarkets GmbH

Nov 2012 - Sep 2019 (6 years 10 months)

Contributed to Java/GWT desktop shipping client with PHP/MySQL backend for e-commerce SaaS. Designed workflow editor and optimized SQL queries and PHP APIs.

ME

Agentic Code Writer

Mercor

Mar 2026 - Present (7 months)

Developed rubrics and task alignments to assess AI-generated code solutions, boosting model performance.

Education

Degrees, certifications, and relevant coursework

University of Kassel logoUK

University of Kassel

Master of Science, Computer Science

2010 - 2013

Master of Science in Computer Science from the University of Kassel, completed in 2013.

University of Kassel logoUK

University of Kassel

Bachelor of Science, Computer Science

2005 - 2010

Bachelor of Science in Computer Science from the University of Kassel, completed in 2010.

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