Senior Full-Stack Developer

AIO Logic

1d•$110,000 - $150,000

About The Position

AIO Logic is seeking a Senior Full-Stack Developer to design, build, and scale its AXIS platform during a critical phase of growth. This is a hands-on engineering role for a developer who thrives in building high-quality, scalable software in a fast-growing, regulated fintech environment. The Senior Full-Stack Developer will be responsible for delivering end-to-end solutions across both front-end (React) and back-end (Java/Spring Boot), translating complex lending and financial requirements into reliable, performant systems. This individual will play a key role in shaping architecture, improving system performance, and mentoring other engineers, while partnering closely with Product, UX, and Operations teams.

Requirements

5+ years of professional software engineering experience with substantial full-stack development.
Strong hands-on experience with React and Java / Spring Boot.
Strong proficiency in React, including hooks, state management, and component architecture.
Strong knowledge of Java, dependency injection, and REST API design.
Understanding of microservices and/or monolithic architectures.
Experience with Git, CI/CD pipelines, containerization (Docker), and orchestration (Kubernetes preferred).
Knowledge of application security best practices.
Strong communication and collaboration skills.
Experience mentoring junior and mid-level developers.

Nice To Haves

Experience building software for financial services, commercial lending, or portfolio management.
Familiarity with financial calculations and conditional payment logic.
Experience building dashboards, reporting tools, and business intelligence solutions.
Experience working in regulated environments with data privacy and encryption requirements.
Proven ability to scale applications and optimize performance.
Experience deploying applications in cloud environments (AWS, Azure, or similar) and familiarity with infrastructure as code (Terraform or similar).

Responsibilities

Architect, design, build, and maintain front-end (React) and back-end (Java/Spring Boot) components of the AXIS platform.
Develop new features across UI/UX, APIs, business logic, and system integrations (internal and external).
Translate business and financial domain requirements into scalable technical solutions.
Implement complex financial logic and build dashboards and reporting tools.
Design and evolve system architecture to support growth, scalability, and maintainability.
Optimize performance across front-end and back-end systems.
Ensure systems meet fintech regulatory standards and build resilient, fault-tolerant systems.
Partner cross-functionally to deliver features end-to-end and improve development processes.
Mentor junior and mid-level developers and promote high standards of code quality.
Maintain and improve CI/CD pipelines, testing frameworks, and cloud infrastructure environments.