Senior Full-Stack Developer (React / Java)

AIO Logic is seeking a Senior Full-Stack Developer to design, build, and scale its AXIS platform during a critical phase of growth. This hands-on engineering role involves delivering end-to-end solutions across both front-end and back-end systems while mentoring other engineers and collaborating with cross-functional teams.

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 (including lending workflows and financial calculations) into scalable technical solutions
• Implement complex financial logic, including amortization schedules, variable rate calculations, conditional workflows, and portfolio-level processing
• Build and maintain dashboards and reporting tools to support business operations, including loan performance, risk metrics, and KPIs
• Design and evolve system architecture (microservices or monolithic) to support growth, scalability, and maintainability
• Optimize performance across front-end and back-end systems, including load times, throughput, and database performance
• Refactor and improve existing systems as needed to support scale and new product capabilities
• Ensure systems meet fintech regulatory standards, including secure authentication, authorization, data encryption, and auditability
• Build resilient, fault-tolerant systems that support high availability and strong SLAs
• Support production operations, incident response, and issue resolution
• Partner cross-functionally with Product, UX, QA, and Operations to deliver features end-to-end
• Participate in code reviews, design discussions, sprint planning, and Agile ceremonies
• Contribute to improving development processes, tooling, and team productivity
• Mentor junior and mid-level developers on best practices, architecture, performance, and maintainability
• Promote high standards of code quality, documentation, and engineering discipline
• Maintain and improve CI/CD pipelines, testing frameworks, monitoring, and logging
• Support containerized deployments and cloud infrastructure environments
• Contribute to tooling that improves developer efficiency and system observability

Requirements:

• 5+ years of professional software engineering experience with substantial full-stack development
• Strong hands-on experience with React (front-end) and Java / Spring Boot (back-end)
• Strong proficiency in React, including hooks, state management, and component architecture; experience with performance optimization and scalable UI design; solid understanding of HTML5, CSS3, responsive design, and cross-browser compatibility
• Strong knowledge of Java, dependency injection, and REST API design; experience with database design, SQL, ORM frameworks (e.g., Hibernate/JPA), and query optimization
• Understanding of microservices and/or monolithic architectures; experience with Git, CI/CD pipelines, and modern deployment practices; exposure to containerization (Docker) and orchestration (Kubernetes preferred)
• Knowledge of application security best practices (authentication, authorization, secure data handling)
• Strong communication and collaboration skills across technical and non-technical stakeholders; ability to work effectively with Product, UX, QA, and business teams
• Experience mentoring junior and mid-level developers; comfortable working in Agile development environments
• Experience building software for financial services, commercial lending, loan servicing, or portfolio management
• Familiarity with financial calculations such as interest rate variability, amortization schedules, and conditional payment logic
• Experience building dashboards, reporting tools, and business intelligence solutions; familiarity with tracking operational metrics, loan performance, and risk indicators
• Experience working in regulated environments with data privacy, encryption, audit logging, and secure data transmission requirements
• Proven ability to scale applications and optimize performance across large datasets and high-load systems; experience with caching strategies, query optimization, and system tuning
• Experience deploying applications in cloud environments (AWS, Azure, or similar); familiarity with monitoring, logging, and observability tools; exposure to infrastructure as code (Terraform or similar) preferred