FULL-STACK HUMAN - Work Directly With CTO At Fast-Growing AI Startup

About this role

FULL-STACK HUMAN - Work Directly With CTO At Fast-Growing AI Startup at amplifa GmbH


Requirements
Please note that this position requires
EU work authorization
.


Language:
English - Fluent

• Full-stack developer
• Comfortable with UI, backend, databases, and basic devops
• Take pride in owning complex features from end to end
• Loves building
• Excellent written communication in English
• Has strong opinions on the best way to work with coding agents
• Experience implementing AI features at scale in production apps
• Experience in Rails or similar frameworks
• Ruby on Rails 3 years
• LLM 3 years
• Front end 3 years

Activities

• True full-stack developer
• Comfortable with UI, backend, databases, and basic devops
• Take pride in owning complex features from end to end
• Loves building
• Has strong opinions on the best way to work with coding agents
• Experience implementing AI features at scale in production apps
• Experience in Rails or similar frameworks

Team
Amplifa is a 1-year-old bootstrapped startup with a tight, super productive team based in Dusseldorf and Tel Aviv. This role will work directly with the CTO.


About The Company
**amplifa – building the sales engine of the industrial Mittelstand.**
amplifa is one of the fastest-growing B2B sales agencies in the DACH region. We take over the entire new customer acquisition for industrial companies – from machine builders to medtech manufacturers – running AI-powered multichannel outbound campaigns across email, LinkedIn, and AI voice, on a performance-based pay-per-meeting model.


Our stack: Clay, Apollo, n8n, Claude & our own AI tooling infrastructure (app.amplifa.ai). Our clients: leading Mittelstand companies like Schaltbau, Bühler Motor, REMIRA, and Kögel. Our growth: seven-figure contracted ARR – with significant new revenue added every month.


Here, you'll work directly with the founders, with maximum ownership and zero corporate politics. If you w...