Senior Software Engineer – Full Stack

Premier Global Links•San Francisco, CA

2d•Onsite

About The Position

Premier Global Links LLC is seeking a Senior Full Stack Software Engineer to join an early-stage fintech team building modern financial products for the Mexican market. This role is ideal for a backend-leaning full-stack engineer who enjoys building greenfield products, AI-powered applications, and high-performance financial systems from the ground up. You will work closely with a small engineering and product team, owning features end-to-end across frontend, backend, infrastructure, and deployment.

Requirements

4+ years of professional software engineering experience, ideally with full-stack development.
Strong experience developing both frontend and backend systems.
Backend-leaning full-stack engineering experience.
Strong proficiency with TypeScript and React or comparable modern web technologies.
Experience building high-performance web applications across browser and server architecture.
Experience working with databases, APIs, and distributed or asynchronous systems.
Experience building and shipping production software.
Ability to work on-site 5 days per week in San Francisco, CA.
Strong ownership, problem-solving, and communication skills.
Ability to work effectively in a fast-moving, early-stage environment.

Nice To Haves

Experience building or deploying AI systems or AI agents in production.
Fintech, payments, banking, lending, payouts, or financial technology experience.
Experience with ledgers or cross-border financial transactions.
Experience working at a high-growth startup.
Experience transitioning from a large technology company to a startup environment.
Experience with databases and queuing systems at scale.
Bachelor's degree in Computer Science or a related technical field.

Responsibilities

Build and own full-stack features from UI through backend services and deployment.
Develop scalable web applications using modern TypeScript and React technologies.
Design and develop backend systems supporting payments, payouts, lending, and financial workflows.
Build reliable services capable of handling high transaction volumes and growing user demand.
Contribute to merchant tools including payroll, point-of-sale, and inventory workflows.
Develop AI-powered products, including agentic applications and financial assistants.
Work with databases, APIs, queues, and distributed application components.
Apply AI-assisted development practices to improve engineering productivity and product delivery.
Collaborate with product and design teams to turn requirements into production-ready software.
Make architecture and technical decisions in a greenfield environment with minimal legacy code.
Take ownership of projects and deliver production features in a fast-paced startup environment.