Total AI Systems, Inc. is building AI-powered SaaS infrastructure for enterprise debt recovery. We operate in a fast-moving, production-driven environment where engineers are accountable for what they ship.
We are not hiring someone who just writes code.
We are hiring someone who understands systems, data, reliability and ownership.
This role is backend-heavy and PHP-focused. You will design, build, secure and scale production systems that power real financial workflows.
If you care about clean architecture, structured logic and shipping stable systems used by enterprises this role is for you.
What You'll Be Responsible For
- Designing and building scalable backend services using PHP
- Designing clean, normalized, maintainable MySQL data models
- Building secure, well-structured REST APIs
- Refactoring legacy logic into modular, testable components
- Integrating third-party APIs and payment gateways safely and reliably
- Improving performance of queries and backend processing
- Handling edge cases in compliance-driven financial workflows
- Writing clear technical documentation and API specs
- Partnering with product and frontend teams to ship production-ready features
- Owning bugs in production, investigating root cause, not patching symptoms
- Contributing to backend architecture decisions and scalability planning
- Maintaining clean Git workflows and code quality standards
Required Qualifications
- Bachelor's degree from an accredited college or university (or equivalent experience)
- 3+ years of backend development experience
- Strong proficiency in PHP and MySQL
- Deep understanding of MVC architecture and API-driven backend design
- Experience designing secure authentication and authorization systems
- Experience integrating third-party APIs and payment gateways
- Strong debugging and performance optimization skills
- Experience working in SaaS or product-based environments
- Ability and willingness to work US business hours when needed
- Fluent spoken and written English
- High ownership mindset you do not wait to be told to fix problems
Strongly Preferred
- Experience in FinTech or compliance-driven systems
- Experience working in multi-tenant SaaS architecture
- Experience refactoring legacy PHP systems
- Understanding of system performance tuning and query optimization
- Basic working knowledge of HTML, CSS, and JavaScript
What We Mean by Backend Ownership
We are looking for someone who:
- Understands database tradeoffs before writing queries
- Thinks about data integrity before writing features
- Does not expose insecure endpoints just for now
- Optimizes bottlenecks before users complain
- Treats production bugs as personal responsibility
