Full Stack MERN / PERN Fintech Engineer

About Hoyack, LLC

Hoyack, LLC is a Texas-based technology company specializing in building modern, scalable software solutions for the fintech and healthcare industries. We partner with startups and growth-stage companies to accelerate product development, streamline financial infrastructure, and deliver exceptional user experiences. Our team thrives on solving complex problems with clean code, thoughtful design, and a deep understanding of regulated environments. At Hoyack, we value curiosity, accountability, and craftsmanship — and we’re building products that make a meaningful impact.

Job Title : Mid-Senior Full Stack Fintech Developer (MERN / PERN + TypeScript)

Location : Hybrid – Downtown San Antonio, TX (75% in-office)

Job Type : Full-time

Experience Level : Mid to Senior

About the Role

We’re looking for a skilled Full Stack Developer with strong fintech experience to join our team. This role is ideal for someone who enjoys working across the stack, thrives in collaborative environments, and has hands-on experience with card processing and banking rails . You’ll help us build secure, scalable systems that power real-time financial transactions and account services.

Note : This is not a remote position . Candidates must be local or willing to relocate, and be able to work on-site in Downtown San Antonio at least 75% of the time .

Key Responsibilities

• Design, develop, and maintain full-stack applications using MERN (MongoDB, Express, React, Node.js) and PERN (PostgreSQL, Express, React, Node.js) stacks
• Build responsive and accessible frontends using React , Next.js , and Tailwind CSS
• Write clean, well-structured, and well-typed code in JavaScript and TypeScript , with a focus on maintainability and scalability
• Integrate with payment processors , card networks , and banking APIs (e.g., ACH, RTP, FedNow)
• Build and maintain backend services and APIs to support onboarding, KYC / AML, account management, and transaction flows
• Collaborate with designers and product managers to build intuitive financial interfaces
• Ensure compliance with security, privacy, and regulatory standards in financial systems
• Participate in code reviews, technical design sessions, and architecture discussions

Requirements

Nice to Have

Interview Requirement

Benefits

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