Senior Software Engineer Jobs in USA 2026

Passionate about rebuilding mortgage infrastructure with modern AI systems? A fast-growing fintech startup seeks a Senior or Staff Software Engineer remotely. Visa transfers, including OPT and H1B, are welcome for this role. If high-stakes financial engineering excites you, this position offers genuine technical depth.

About the Role

You will architect AI agents that digitise mortgage operations workflows entirely. This includes integrating third-party APIs for underwriting and fraud detection. Additionally, you will design job-processing infrastructure focused on reliability at scale. You will also own features end-to-end, from design through production deployment.

This fully remote role requires working US business hours specifically. You are expected to ship production code within your very first week.

About the Hiring Firm

The company operates as an AI-native fintech startup automating mortgage origination processes. It employs roughly 80 people, working remotely across the US and Canada. The company recently closed a Series B funding round successfully. It has powered over $85 billion in home loans through its platform. A top-10 US mortgage lender is expected to go live by late 2026.

Job Duties

• Architect and ship multi-step AI agents for mortgage workflows
• Integrate third-party APIs for underwriting and fraud detection
• Design job-processing infrastructure focused on scale and reliability
• Work within a TypeScript monorepo with strict schema enforcement
• Mentor earlier-career engineers on technical depth and judgment
• Own features end-to-end for enterprise mortgage lender customers

Job Requirements

• 7–25 years of full-stack engineering experience required
• At least 5 years operating at a Senior engineering level
• Strong, demonstrable TypeScript depth with complex systems built
• Production experience with React, Node, GraphQL, and PostgreSQL
• Experience scaling distributed systems using AWS and Terraform
• Background at a high-growth tech company, VC-backed or FAANG

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Conclusion

This role suits engineers ready to modernise a genuinely broken industry process. With strong compensation and real technical ownership, the challenge stays substantial. For senior engineers seeking fintech impact, this opportunity offers a compelling path.

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