Senior Full Stack Software Developer

Outsourcing Advantage is a boutique business process outsourcing provider specializing in back-office and customer support services for US-based companies. We are seeking a highly experienced Senior Full Stack Software Developer to take ownership of an existing AI-generated bookkeeping software platform and drive it through completion.

This is an exciting opportunity for a self-sufficient, solution-oriented developer who can independently assess, troubleshoot, improve, and deliver a complex software product with minimal direction. The ideal candidate has strong full stack development expertise, a solid understanding of accounting principles, and proven experience taking software projects from planning to production.

This is a temporary remote position expected to last approximately 8 months.

Key Responsibilities

• Take full ownership of an existing bookkeeping software platform

• Analyze the current system architecture, codebase, and business logic
• Identify technical, functional, and financial data integrity issues
• Design and implement scalable solutions to improve system performance, reliability, and usability
• Independently prioritize development tasks and drive projects with minimal supervision
• Collaborate with stakeholders to understand business requirements and translate them into technical solutions
• Ensure accounting workflows, financial calculations, reports, and outputs are accurate and reliable
• Debug, refactor, optimize, and enhance the existing codebase
• Create and maintain technical documentation when necessary
• Conduct comprehensive testing and validation to ensure software quality and financial data accuracy
• Deliver the platform to a production-ready state

Requirements

• 5+ years of professional experience in full stack software development
• Proven experience owning software projects from planning through deployment
• Strong understanding of accounting principles, bookkeeping workflows, and financial reporting
• Experience inheriting, reviewing, and improving existing software applications
• Excellent troubleshooting, analytical, and problem-solving skills
• Ability to work independently with minimal supervision
• Strong communication and project management skills

Preferred Qualifications & Ideal Candidate Profile

The ideal candidate will have:

• Experience developing or maintaining accounting, bookkeeping, ERP, or financial software platforms
• Experience reviewing and improving AI-generated codebases
• Experience performing software audits, financial reporting, data validation, and reconciliation processes
• Ability to establish technical direction and make sound architectural decisions
• Experience working with and optimizing existing or legacy software applications
• A portfolio, GitHub repository, or examples of completed software projects is an advantage
• The ability to quickly understand and work within an unfamiliar codebase
• The ability to thrive in situations where requirements or documentation are incomplete
• A proactive mindset with the initiative to take full ownership of projects with minimal supervision
• A strong understanding of both software engineering and accounting principles
• The ability to identify expected system behavior, implement effective solutions, and validate financial outputs for accuracy
• A proven track record of successfully delivering complex software projects from development through production
• Excellent analytical, troubleshooting, and problem-solving skills with strong attention to detail
• A commitment to building reliable, scalable, and production-ready software solutions
• Availability to work with significant overlap during Eastern Standard Time (EST) business hours

Technical Requirements

Strong experience with:

• TypeScript
• React
• Vite
• Tailwind CSS
• Node.js
• Express.js
• PostgreSQL
• Drizzle ORM

Benefits

• Competitive salary
• Opportunity to work on an innovative accounting software platform
• Supportive and collaborative work environment
• Weekly payments
• Weekends off
• Growth opportunities