Proxify AB: Senior Golang Developer
January 12, 2026[Hiring] Quantitative Research Team Lead (Completed) @Apexver
January 12, 2026
Headquarters: Switzerland
URL: http://cavalermedia.com
We are looking for a rare hybrid: A data-driven Deliverability Engineer who understands the “dark arts” of DNS and server reputation, combined with a Psychology-driven Copywriter who knows how to break through a CEO’s inbox.
You won’t just be sending emails; you will be responsible for the entire infrastructure, from domain procurement to lead sourcing and conversion optimization.
Your Responsibilities:
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Infrastructure Management: Setting up and maintaining multiple secondary domains, ensuring perfect SPF, DKIM, and DMARC alignment.
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Deliverability Monitoring: Proactive monitoring of domain health via Google Postmaster Tools and specialized deliverability suites.
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Campaign Strategy: Building scalable personalization workflows (using tools like Clay, Instantly, or Smartlead).
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List Hygiene: Sourcing high-quality leads and implementing multi-step verification to keep bounce rates below 2%.
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Copywriting: Writing and A/B testing high-intent, interest-based cold email sequences.
Required Skills:
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Proven track record in managing high-volume cold outreach (1,000+ emails/day) without landing in spam.
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Expert knowledge of DNS records (A, CNAME, MX, TXT) and SPF flattening.
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Experience with Inbox Rotation and Custom Tracking Domains.
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Ability to write “human-centric” copy that doesn’t look like a template.
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Experience with tools like Apollo, Clay, Smartlead/Instantly, and NeverBounce.
How to Apply (Strict Instructions): We do not accept standard CV-only applications. To be considered, you must complete our technical vetting form here:
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