Principal Software Engineer Jobs - April 2026

For those who know what they're doing - even without AI. Our focus is agentic engineering: building and improving systems, workflows, and engineering practices around AI agents and AI-assisted development. We use AI tools heavily, but we expect engineers to k…

AI + Cybersecurity company hiring engineers to build AI platform and pipelines, working closely with applied AI scientists. Onsite roles in San Jose, CA. Open roles include Principal Software Engineer (AI Platform), Senior Software Engineer (AI Platform), app…

Founding-engineer roles building Nono agent security tooling. Principal Software Engineer: design and build the agent security runtime to intercept, classify, and validate agent intents against security policy; design cryptographically verifiable systems, fin…

We’re a team of experienced generalist SWEs and AI enthusiasts who are building custom AI agents for enterprise clients. No AI experience required: we are actively trying to be the best place in the world to learn applied AI. I’m Frank, an engineer here. This…

We're building the first AI wealth platform. Hiring senior+ software engineers to partner closely with our co-founders and engineering leadership team. We're a Series C company with ~100 people passionate about making wealth management better, faster, and che…

Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts. The company focuses on integrated systems for complex metal part manufacturing across industries like aerospace, defense, automotive,…