Full Stack MERN/PERN Fintech EngineerHoyack • San Antonio, Texas, United States, 78205
Full Stack MERN / PERN Fintech Engineer
Hoyack • San Antonio, Texas, United States, 78205
[job_card.variable_days_ago]
[job_preview.job_type]
- [job_card.full_time]
[job_card.job_description]4+ years of experience as a full stack developer Strong proficiency in JavaScript and TypeScript , including React , Node.js , and Express Experience building apps with Next.js and styling with Tailwind CSS Deep understanding of MongoDB and PostgreSQL Hands-on experience integrating with financial APIs and banking / payment infrastructure Familiarity with platforms like Plaid, Galileo, Marqeta, Lithic, Synapse, Unit, Modern Treasury , or similar Experience with KYC / AML , PCI DSS , and secure coding practices Experience with KYC platforms such as Alloy, Persona, Middesk , or Jumio Able to work on-site in Downtown San Antonio at least 75% of the time Experience with TypeORM , Mongoose , or similar database abstraction layers Familiarity with Docker , Kubernetes , and modern CI / CD practices Knowledge of event-driven architectures , webhooks , and message queues Prior experience in embedded finance , banking-as-a-service (BaaS) , or neobanking platforms Understanding of SOC 2 , GDPR , or other compliance standards Candidates must be available to interview in person in San Antonio, TX Remote interviews will not be considered for this position Competitive salary Health, dental, and vision insurance Unlimited PTO Collaborative and mission-driven work environment Walkable office in the heart of Downtown San Antonio
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
PI05dbf4c88f59-30511-37976002
[job_alerts.create_a_job]
Full Stack MERNPERN Fintech Engineer • San Antonio, Texas, United States, 78205
[internal_linking.similar_jobs]
Analyze, design and develop tests and test-automation suites.Design, create and develop a processing platform using various configuration management technologies.
Test software development methodolo...[show_more]
At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer's success.
We empower our teams, contribute to our communities, an...[show_more]
Known for being a great place to work and build a career, KPMG provides audit, tax and advisory services for organizations in today's most important industries.
Our growth is driven by delivering re...[show_more]
If you picture yourself doing great things that make a difference in the lives of others, Turner is the place to be.Turner Construction is an industry-leading commercial construction general contra...[show_more] Java Server Engineer Job Duties : Evaluates Web applications by studying systems flow, data usage, and ...[show_more] 
Civil / Structural Engineer - BUILDER - SMS.Full-time, Hybrid (remote / on-site).Based in San Antonio, relocation package available.
This position is responsible for providing program support for th...[show_more]
Estimated payments include wages and expense reimbursement, are based on information available to Fusion at time of posting, and could vary depending on factors related to the facility or applicant...[show_more] Investigate and understand root causes for issues in business operations.Develop corrective actions to solve the operations issues.
Provide consulting services to solve operations engineering proble...[show_more] 
McKesson is an impact-driven, Fortune 10 company that touches virtually every aspect of healthcare.We are known for delivering insights, products, and services that make quality care more accessibl...[show_more]
Barnard Construction Company, Inc.Bozeman, Montana, is a heavy-civil construction company with projects underway across North America.
Barnard is ranked by Engineering News-Record , a leading constr...[show_more] Staff Software Engineer Remote Job Duties : • Implement and evolve a Data Lake storage system with low latency and high thr...[show_more] 
Vantage Data Centers powers, cools, protects and connects the technology of the world's well-known hyperscalers, cloud providers and large enterprises.
Developing and operating across North America,...[show_more]
Senior Systems Account Manager.At Trane Technologies and through our businesses including Trane and Thermo King, we create innovative climate solutions for buildings, homes, and transportation that...[show_more] Vantage Data Centers powers, cools, protects and connects the technology of the world's well-known hyperscalers, cloud providers and large enterprises.
Developing and operating across North America,...[show_more] 
CANDIDATES FROM ALL CIVIL ENGINEERING DISCIPLINES ARE ENCOURAGED TO APPLY.POSITION IS ON A CONTRACT / PROJECT BASIS WORKING CLAIMS - Licensed PEs who have a full time position are encouraged to app...[show_more]
Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges.Our capa...[show_more] Full Stack Marketer Remote Job Duties : • Your goal will be to develop and implement the most profitable strategies...[show_more] System Engineer Job Duties : Manages and monitors all installed systems and infrastructure for ...[show_more]
Sofware Engineer
TradeJobsWorkForce • 78299 San Antonio, TX, US
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
Configuration Manager
Leidos Inc • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Manager, Cloud Architect
KPMG • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Scheduling Engineer-Concrete-Self Performed Operations (Lousiana)
Turner Construction Company • San Antonio, TX, United States
[job_card.permanent]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Java Server Engineer
TradeJobsWorkForce • 78218 San Antonio, TX, US
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
Structural Engineer
GoldenWolf • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
IR Tech
Fusion Medical Staffing • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Operating Engineers
TradeJobsWorkForce • 78294 San Antonio, TX, US
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
Lead Offensive Engineer (Hiring Immediately)
MCKESSON • SAN ANTONIO, TX, US
[job_card.part_time]
[last_updated.last_updated_variable_days] • [promoted]
Project Engineer
Barnard • San Antonio, TX, US
[job_card.full_time]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Staff Software Engineer - Remote
TradeJobsWorkForce • 78214 San Antonio, TX, US
[filters.remote]
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
Project Engineer, NA
Vantage Data Centers • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Systems Account Manager
Ingersol Rand • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Critical Facilities Engineer, NA
Vantage Data Centers • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_variable_hours] • [promoted] • [new]
Forensic Structural Engineer - Contract
Engionix • San Antonio, TX, US
[job_card.full_time] +1
[filters_job_card.quick_apply]
[last_updated.last_updated_30] • [promoted]
Vulnerability Researcher / Reverse Engineer / CNO Developer (Onsite)
Nightwing • San Antonio, TX, United States
[job_card.full_time]
[last_updated.last_updated_variable_days] • [promoted]
Full Stack Marketer - Remote
TradeJobsWorkForce • 78212 San Antonio, TX, US
[filters.remote]
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]
System Engineer
TradeJobsWorkForce • 78234 San Antonio, TX, US
[job_card.full_time]
[last_updated.last_updated_30] • [promoted]