Senior / Staff Software Engineer – AI Fintech

Location: Remote, US (US working hours)

Type: Full time

Tech: TypeScript, React, Node.js, GraphQL, PostgreSQL, AWS, Terraform

About the role An AI-first fintech transforming how mortgages are originated and processed is hiring Senior and Staff Software Engineers. The company is building AI-native software that automates complex lending workflows, and it is growing its engineering team significantly.

This is a hands-on role for someone who likes owning complex problems from architecture through to production. You'll work across the stack, with a strong emphasis on backend systems, infrastructure and architecture. New engineers typically ship to production from day one and move onto mission-critical projects within their first month.

What you might work on

- Architecting and launching multi-step AI agents that automate enterprise workflows
- Building integrations with lending-service APIs (underwriting, document generation, fraud prevention)
- Designing the next generation of distributed job-processing infrastructure
- Improving the reliability, scalability and observability of backend systems
- Building full-stack product features used by major financial institutions
- Designing and scaling complex relational data models

Tech environment

- Almost entirely TypeScript, with end-to-end type safety
- React on the frontend; Node.js, Express and GraphQL/Apollo on the backend
- PostgreSQL, AWS (ECS, RDS, ElastiCache, Kafka, Elasticsearch), Docker and Terraform
- TypeScript monorepo with shared full-stack code
- Automated end-to-end and integration testing
- 100% infrastructure-as-code,



with temporary staging environments for each pull request

What we're looking for

- 7+ years of experience, including substantial time at Senior or Staff level, and still hands-on
- Strong commercial TypeScript experience across backend and frontend
- Recent, hands-on production experience with Node.js/Express, PostgreSQL and Terraform
- Experience with React and full-stack product development
- Experience designing and scaling distributed systems on AWS or similar cloud platforms
- Strong system design skills, with the ability to take features from design to production
- Clear communication with both technical and non-technical stakeholders

Ideal background

- High-growth, product-led companies such as VC-backed startups, scale-ups and leading tech businesses
- Fintech or financial infrastructure experience (payments, lending, trading, crypto, or other systems that move money)
- A builder mentality, shown through startup experience, founder or technical leadership experience, side projects, an active GitHub profile, or ownership of products and systems
- Stable tenure and progression

Nice to have

- AI product development, including LLM evaluation, experiment design and dataset curation
- Building reliable AI or agentic systems in production
- SRE principles and low-maintenance, observable infrastructure
- Security-sensitive product development
- Mentoring while staying hands-on

What's on offer

- Significant engineering ownership and autonomy
- A genuinely AI-native product and architecture
- Remote working across US time zones
- Competitive equity
- Medical, dental and vision benefits, 401(k), HSA/FSA and flexible time off

Feel free to message me directly to find out more!

📌 Staff Software Engineer (Canada)
🏢 Cavendish Professionals
📍 Canada