Senior Fullstack Engineer: Identity & Auth, Stock Options

Alpaca; New York (NY); Remote; USD 170,000 - 210,000; Full time

Benefits offered by this job

Health benefits

New Hire Home-Office Setup: USD $500

Monthly Stipend: USD $150 per month

Job summary

Alpaca, a US-headquartered brokerage infrastructure company, seeks a Senior Full Stack Engineer on the Platform Team to design and operate authentication, authorization, and IdP systems across APIs and products.

You'll primarily write Go for backend services and gRPC/REST, with React/TypeScript for auth UI, plus occasional Java. You’ll own features end-to-end, from design through deployment, monitoring, and collaboration with other teams.

Qualifications

• 5+ years of software development in strongly-typed languages with at least 1 year in Go.
• Experience building web apps with React and TypeScript.
• Solid PostgreSQL fundamentals and relational DB familiarity.
• Startup experience in ambiguous environments and ability to ship end-to-end.
• 3+ years working on systems at scale.

Responsibilities

• Build and improve authentication-related experiences in customer and partner web applications.
• Develop and maintain the platform’s authentication, authorization, and IdP services.
• Create and evolve shared libraries and SDKs.
• Integrate with identity providers and maintain login across products.
• Deploy, monitor, and troubleshoot identity services in production.
• Help modernize legacy authentication patterns as the platform evolves.
• Own work end to end from requirements to delivery and follow-up.
• Collaborate with other engineering teams on identity and access integration.
• Maintain high code quality, write tests, and participate in code reviews.
• Assist incidents and on-call rotation as needed.

Skills

Go

React

TypeScript

PostgreSQL

Startups

Systems at scale

Tools

Kubernetes

Helm

OpenAPI

Kafka

Prometheus

Grafana

Job description

Alpaca, a US-headquartered brokerage infrastructure company, seeks a Senior Full Stack Engineer on the Platform Team to design and operate authentication, authorization, and IdP systems across APIs and products.

You'll primarily write Go for backend services and gRPC/REST, with React/TypeScript for auth UI, plus occasional Java. You’ll own features end-to-end, from design through deployment, monitoring, and collaboration with other teams.