Senior Backend Engineer (Go/Java) — AI-Native Fraud Platform

Casap; New York (NY); Hybrid; USD 170,000 - 250,000; Full time

Benefits offered by this job

Start-up equity

Full health, vision & dental coverage

One Medical membership

Stocked kitchens + weekly lunches

Commuter benefit

Team building events & happy hours

Flexible PTO

Apple equipment + annual home office预算

Job summary

Casap is hiring a senior backend engineer to join our hybrid office in New York City or San Francisco. You will own backend systems, design scalable microservices, and drive architecture choices to support fraud prevention platform growth.

You’ll contribute to CI/CD improvements, mentor teammates, and collaborate across product and engineering to deliver high‑quality, reliable software used by financial institutions.

Qualifications

• 6+ years of experience in software development, with 2+ years using Go or Java in production.
• Experience on platform teams with significant system architecture contributions.
• Led end-to-end implementation or major re-architecture of a key service.
• Strong fundamentals in algorithms, data structures, and design patterns.
• Experience mentoring juniors and leading projects as sole tech lead.
• Strong communication and collaborative teamwork abilities.

Responsibilities

• Develop and maintain backend systems integrated with credit card, banking, and merchant platforms for workflow chargeback management.
• Scale and generalize the system for growth and broad use cases.
• Architect and develop robust microservice architectures.
• Design core frameworks and libraries for backend services to promote reuse.
• Upgrade coding practices, CI/CD pipelines, and deployed systems for performance and security.
• Identify and implement infrastructure optimizations for efficiency and quality.
• Own end-to-end development and deployment of key features, including tech stack decisions.

Skills

Software development

Go/Java

Platform teams

End-to-end ownership

Algorithms & data structures

Mentoring

Communication

Job description

Casap is hiring a senior backend engineer to join our hybrid office in New York City or San Francisco. You will own backend systems, design scalable microservices, and drive architecture choices to support fraud prevention platform growth.

You’ll contribute to CI/CD improvements, mentor teammates, and collaborate across product and engineering to deliver high‑quality, reliable software used by financial institutions.