Senior Software Engineer Jobs - April 2026

Cassidy is an AI agent and automation platform for non-technical knowledge workers. Series A company (~25 people) hiring onsite in New York City. Roles open: Senior and Mid-level Software Engineers focused on end-to-end product engineering and building system…

Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a single integrated system, the company aims to revolutionize industries …

Thirdfort is a Series A startup in London building a Client Due Diligence Platform to prevent fraud and money laundering. They have rebuilt their product and are leaning into AI across the system. Engineers are expected to contribute to product design and tec…

Zigment is a customer journey platform that makes it simple to build AI agents for enterprises. Small, lean tech team focused on building reliable and scalable AI systems, with access to the latest AI coding and productivity tools. Open roles: Software Engine…

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…

CivAI is a non-profit that educates policymakers and the public about AI risks using live software demonstrations. As a software engineer, you will be responsible for conceiving of, and building end-to-end, the software demonstrations that are the core of wha…