Engineering leader who builds the teams behind the products, and the systems and culture that make shipping repeatable.

19 years in software. 9+ as an EM. Cash App, Amazon, Vistaprint, Microsoft. Exploring Senior EM and Director roles.

Nate Mielnik

Senior EM at Cash App

Tax Server / Engine team

Since Apr 2025

Tenure

19y

software, 9+ as EM

Led up to

30

engineers, Design Tech at Vistaprint

Mentored

150+

engineers, managers, and product managers

Senior EM

Director of Engineering

Consumer tech, marketplaces, or developer platforms. Remote-first preferred.

Lead with empathy.

Fail fast, evolve faster.

Extreme candor & transparency.

Trust is a motivator.

Passion over experience.

  1. Since 2025

    Senior Engineering Manager · Cash App / Block

    Leading the Tax Server / Engine team. Shipped three AI product launches, transformed operational excellence (about 80% reduction in pages and tech debt), and lifted team output ~60% through team-wide adoption of AI-assisted development.

  2. 2020-2025

    Engineering Manager · Amazon (AWS · Freevee · Prime Video)

    Led teams of 4 to 14 across three orgs. Launched RPKI route security across all AWS routers globally, built Freevee's notification platform from zero to 5M+ customers, and delivered Prime Video with Ads in 4 months with a 14-engineer tiger team, unblocking launch to 50M+ customers.

  3. 2013-2020

    Senior Manager / Principal Lead Engineer · Vistaprint

    Built the DIY website builder (Tower) from greenfield to launch with 20+ engineers, reversing a 3% signup decline into 5% growth. Formed a 30-person Design Tech org. Founded a 4-year mentorship guild that reached 100+ engineers and converted 8 ICs into managers.

  4. 2007-2013

    Senior Software Engineer · Microsoft

    Designed Microsoft Account's two-factor authentication system (500M+ users). Built the enterprise authentication client presented at Microsoft PDC 2008, and authored a JS UI framework used across Windows and Xbox.

View full résumé →

06 systems

Original systems I invented while leading engineering teams. Several outlived me at the companies that adopted them.

Essays on leadership, coaching, and team building, published on Medium.

Things I build outside of work. Some are businesses, some are art, all of them are how I stay sharp.

Reach me on LinkedIn. That's the best place to start a conversation. I'm especially open to Senior EM and Director conversations right now.