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 6-7+ 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 Strong experience with Docker deployment in development and production environments 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 Quickbooks React Vite Tailwind CSS Node.js Express.js PostgreSQL Drizzle ORM Competitive salary Opportunity to work on an innovative accounting software platform Supportive and collaborative work environment Weekly payments Weekends off Growth opportunities