Also available as a video on YouTube (https://www.youtube.com/watch?v=S_zp82fYrGw) .
    
    


Questions and answers session from January, 2026.


Timestamps



     
       
  •  [@0:00:00] Introduction
     
       
  •  [@0:01:44] Marriage and kids plans
     
       
  •  [@0:03:26] Have you tried Helix editor?
     
       
  •  [@0:06:10] Interview questions for Rust developers
     
       
  •  [@0:13:19] How did you and your girlfriend meet?
     
       
  •  [@0:15:31] Claude Code usage at Helsing
     
       
  •  [@0:22:29] Thoughts on Mojo
     
       
  •  [@0:26:47] Learning Rust to get a 100k job
     
       
  •  [@0:34:40] Writing a new version of your book
     
       
  •  [@0:41:47] How do Rust developers get girls?
     
       
  •  [@0:45:50] Application-wide error handling patterns
     
       
  •  [@0:54:03] Getting a Rust job as a graduate
     
       
  •  [@0:54:38] Recommended Rust streamers
     
       
  •  [@0:57:42] Advice for early career
     
       
  •  [@0:57:55] Interesting companies to work at
     
       
  •  [@1:14:11] Will AI widen or narrow the expert-novice gap?
     
       
  •  [@1:25:27] One billion row challenge: is Java really the winner?
     
       
  •  [@1:28:16] Are you WASM yet?
     
       
  •  [@1:28:36] Crust of Rust on self-borrowing and Ouroboros
     
       
  •  [@1:30:41] NixOS and its effect on your workflow
     
       
  •  [@1:35:02] Interview approach for assessing candidates with LLMs
     
       
  •  [@1:39:49] Breaking changes worth making in Rust
     
       
  •  [@1:47:47] Improving as an intermediate Rust developer
     
       
  •  [@2:02:54] Testing critical software (flight systems)
     
       
  •  [@2:09:33] Generalist vs specialist
     
       
  •  [@2:13:05] Why care about high salary in Norway?
     
       
  •  [@2:16:49] Prep for Impl Rust videos
     
       
  •  [@2:18:58] Job security with the rise of AI
     
       
  •  [@2:27:20] Rust 4 Linux
     
       
  •  [@2:29:45] Quick-fire answers
     
     



In the quick-fire round, we covered measuring growth as engineer,
thoughts on Zig, Rust job market for juniors, the Rust community, how
2025 was, the next-gen trait solver, tech to learn in 2026, ML and Rust,
monorepos and CI, missing Rust features, Dioxus, reflection in Rust, Zig
leaving GitHub, and favorite CS books.

Jon Gjengset

A New Year's Day Q&A stream covering a wide range of topics including personal life updates (engagement, apartment purchase), editor preferences (Vim vs Helix), Rust learning strategies (project-based learning, rustlings, fly.io challenges), error handling patterns in Rust (opaque vs enum vs hybrid), interviewing philosophy for Rust developers (open-ended questions over LeetCode), AI coding tool usage at a defense company with data sensitivity tiers, thoughts on the Mojo GPU programming language, and career advice for early-stage developers. Also covers an upcoming second edition of 'Rust for Rustaceans' expected by end of 2026 or early 2027.

January 2026 Q&A