Application developer Jobs in Miami, FL

Company Overview:

One Park Financial (OPF) is a leading Financial Technology company dedicated to empowering small businesses by connecting them with flexible financing and funding options. Our mission is to provide entrepreneurs with the working capital they need to elevate their businesses. At OPF, we believe in working with high-performing individuals who are ready to play an integral part in our company's expansion — because our success hinges on our people.

Why Join Us? Position Overview

At OPF, we foster a dynamic and inclusive company culture that emphasizes collaboration, innovation, and personal growth. Our team is composed of passionate, driven individuals who are committed to making a difference. Here’s what you can expect when you join our team:

• Innovative Environment: Work with cutting-edge technology and be part of a team that is constantly pushing the boundaries of fintech.
• Professional Growth: We invest in our employees’ growth with continuous learning opportunities, training programs, and career advancement paths.
• Supportive Culture: Enjoy a supportive and inclusive work environment where your ideas are valued, and your contributions make a real impact.
• Community Focus: Be part of a company that understands the importance of small and mid-sized businesses to their communities and the nation’s financial health.
• High-Performing Team: Join a team of badasses who are committed to excellence and are integral to our company's expansion and success.

Position Overview

We are looking for an AI-Native Application Software Engineer to help design, build, evolve, and operate a modern cloud-based software platform serving thousands of small and micro-businesses.

This is not a traditional software engineering role where success is primarily measured by how much code an engineer writes. The modern engineer understands the business problem first, frames it precisely, uses AI to accelerate design and implementation, understands how the resulting solution fits into the broader technology ecosystem, and owns whether the solution works for the customer.

AI is an integral part of the engineering process. The engineer uses AI to research, design, generate code, create tests, investigate problems, explore alternatives, document systems, and accelerate delivery—while directing, challenging, and validating AI-generated work.

What we are looking for

• Deep Subject-Matter Expertise Understands the business and knows what “correct” means.
• Exceptional Problem Framing Turns ambiguity into clear requirements and solutions.
• AI Orchestration Uses AI effectively while challenging and validating its output.
• Systems Thinking & Breadth Understands how UI, applications, APIs, data, cloud, security, and integrations fit together.
• Curiosity & Continuous Learning Naturally investigates, experiments, learns, and adapts

What you'll do

• Understand customer workflows and translate business needs into software solutions.
• Turn ambiguous problems into clear requirements, architecture, and acceptance criteria.
• Use AI as an engineering collaborator for research, design, coding, testing, debugging, documentation, and optimization.
• Review and challenge AI-generated solutions and remain accountable for the final result.
• Develop full-stack applications using React, Node.js, JavaScript/TypeScript, and MongoDB.
• Build and operate cloud applications using AWS, Docker, Kubernetes/EKS, CloudFront, ALB, Route 53, ACM, and related services.
• Work with multi-tenant websites, customer-owned domains, DNS, SSL certificates, and scalable cloud infrastructure.
• Build business workflows including websites, lead capture, estimates, invoices, receipts, business email, analytics, and communications.
• Integrate external services such as Twilio, WhatsApp Business Platform, Amazon Connect, Google Analytics, and other APIs.
• Diagnose and resolve production issues across the entire technology stack.
• Automate repetitive engineering processes and continuously improve development and deployment workflows.
• Learn and experiment with new AI models, tools, APIs, and architectures.

Qualifications

• Strong experience with modern full-stack application development.
• Strong React, Node.js, JavaScript/TypeScript, and database experience.
• Experience with cloud-based applications, preferably AWS.
• Experience working with APIs, integrations, CI/CD, and production systems.
• Strong analytical and troubleshooting skills.
• Ability to work independently and across technical boundaries.
• Demonstrated ability to use AI effectively in software development.
• Most importantly, the ability to understand the problem, ask the right questions, and own the outcome.

Requirements

• 3+ years of professional software development experience or equivalent demonstrated capability.
• Strong JavaScript/TypeScript experience.
• Strong React experience.
• Strong Node.js experience.
• Experience developing REST APIs.
• Experience with MongoDB or another modern database.
• Experience with Git and modern software development workflows.
• Experience developing and debugging production applications.
• Understanding of cloud-based application architecture.
• Strong problem-solving ability.
• Ability to work across the full technology stack.

Preferred Experience

• AWS cloud development and operations.
• Docker and Kubernetes/EKS.
• MongoDB Atlas.
• TypeScript.
• Playwright or comparable end-to-end testing.
• Google Analytics and Looker Studio.
• Twilio, WhatsApp Business Platform, or Amazon Connect.
• AWS End User Messaging and SES.
• DNS automation and customer-owned domain management.
• Multi-tenant SaaS platforms.
• Mobile WebViews.
• Cursor or similar AI development environments.
• AI coding agents and agentic development workflows.

Benefits

• Competitive salary
• Health insurance
• Growth and development opportunities
• Dynamic and collaborative work environment
• Company events and team-building activities