Selected work / 01
Job Search OS
A private operating system for discovering roles, reviewing fit, assembling evidence-backed application materials, and tracking the work around a job search.
- Next.js
- TypeScript
- LangGraph
- LangSmith
Senior Product Engineer · Creative Technologist
Carl Welch
I build complex product interfaces and the systems behind them. My work spans enterprise security, analytics, mobility, applied AI, and creative software, grounded in two decades of interactive and product work.
At a glance
- Years across interactive and product work
- 20+
- Product engineering roles since 2016
- 5
- Professional recommendations
- 13
- Flagship projects with full case studies
- 8
Current work
Current work, selected for a fast read.
Three systems that show the range of the practice now: product operations, grounded AI, and evidence-led technical visualization.
Selected work / 06
Jolene AI
A governed AI system that uses public hybrid RAG over reviewed evidence, bounded conversation continuity, tested model and deterministic responses, explicit action boundaries, and a warm, recognizable personality across my full 20-plus-year career.
- TypeScript
- OpenAI
- Hybrid RAG
- Next.js
Selected work / 08
EchoAtlas
A human-in-the-loop synthetic aperture radar workbench for discovering provider-reported imagery, reviewing acquisition pairs, and inspecting deterministic change candidates without turning a heuristic into a claim about the world.
- Python
- FastAPI
- Rasterio + NumPy
- React + TypeScript
The long view
The current work has a history.
Before React and applied AI, I was managing designers and programmers, building PHP and MySQL applications, prototyping immersive training systems, shaping Evidence.com workflows, and, yes, making graphics for GWAR. That earlier work still shapes how I engineer products now.
- 01Early interactive practiceInteractive systems came first.
- 02Studios, clients, and technical teamsThe range widened.
- 03Product engineering and leadershipThe work became larger product systems.
- 04Current independent workThe threads now meet in the same products.
From the archive
Four selected examplesSwipe to browse
Capabilities
What I do, linked to the work behind it.
- 01Product interface systems
- 02Bounded AI workflows
- 03Security and platform boundaries
- 04Creative technology
Experience
Product engineering across security, analytics, mobility, and consumer software.
- Jul 2022 to Mar 2026YubicoSenior Software Engineer
- Mar 2020 to Jul 2022Revenue.ioSenior Software Engineer
- Jul 2018 to Mar 2020BoschLead Frontend Developer
How people describe the work
The pattern shows up in other people’s words.
“Carl's experience, persistence, and (most of all) calm always saved the day.”
Todd Rimes, teammate
“Carl’s been a true mentor.”
Jason Conover, direct report
“Carl Welch is a rare breed of web expert. He has his left and right brain working in sync to deliver stellar web designs and functionalities.”
Jacob Tell, client
Next step
Let’s talk about what you’re building.
If you’re hiring for senior product engineering, need a technical partner for a difficult interface, or want to talk through the work, I’d be glad to hear from you.