Principal Backend / Infrastructure Engineer – TypeScript

The role

You will architect, build, and scale core systems for a financial platform. This includes working on backend services, trading systems, real-time APIs, data pipelines, and infrastructure.

What you will do

• Design, build, and maintain backend services and APIs using Node.js and TypeScript.
• Improve and extend infrastructure for trading, account management, transaction processing, and portfolio automation.
• Ensure high availability, performance, and security across backend systems.
• Build and enhance internal tools, data pipelines, and system integrations.
• Extend DevOps/infrastructure to shape CI/CD, deployment automation, observability, monitoring, and incident response.
• Champion best practices for code quality, system design, testing, and documentation.
• Mentor junior engineers and drive architectural initiatives across the backend domain.

Required qualifications

• 6 + years of professional experience building backend systems in TypeScript or comparable languages
• Strong backend fundamentals: APIs, microservices, distributed systems, data stores, caching, messaging systems
• Experience with database design (SQL & NoSQL), scaling patterns, performance optimization, and observability
• Deep experience with cloud platforms (AWS, GCP, Azure) and infrastructure as code
• Solid understanding of security practices for backend systems (authentication, authorization, data protection)
• Strong analytical, problem-solving, and communication skills
• Ability to work effectively in a fast-paced, collaborative environment

Nice to have

• Node.js preferred
• Experience building financial or real-time services
• Familiarity with automated portfolio, trading, or financial data systems
• Previous ownership of backend infrastructure or mission-critical systems
• Experience scaling apps used by tens of thousands of users with high throughput

Benefits

• Competitive cash
• Well-above-market equity

About the company

Titan is a fintech company rebuilding wealth management using technology and AI. They are backed by a16z and Sam Altman and power over $1 billion in assets under management.