Senior Full-Stack Software Engineer

Contribute to an AI training project by applying senior-level full-stack engineering expertise to complex software development, debugging, architecture, code evaluation, and cross-language implementation work. The role spans both front-end and back-end systems and is intended for engineers who are comfortable working across the full application stack. Key Responsibilities Create, solve, review, and validate challenging software engineering tasks across front-end and back-end systems. Translate complete coding builds from one programming language into another. Develop, modify, and debug front-end and back-end application components. Implement user-facing functionality along with the services, APIs, and data models that support it. Trace requests and data across browsers, front-end applications, APIs, services, databases, and external integrations. Work within unfamiliar repositories and determine how existing application architectures are structured. Diagnose failures involving application state, API contracts, authentication, persistence, networking, and deployment. Evaluate and improve code written in multiple programming languages. Review AI-generated solutions for correctness, completeness, performance, security, and maintainability. Qualifications Strong professional experience developing production full-stack applications. Meaningful hands-on experience in both front-end and back-end engineering. Production experience with multiple programming languages. Relevant technologies and languages include Python, React, JavaScript, Java, Node.js, Rust, Go, and TypeScript. Strong knowledge of browser applications, APIs, application state, databases, and service integrations. Experience understanding and contributing to the architecture of complete software systems. Ability to work effectively in unfamiliar codebases. Strong debugging and technical problem-solving skills. Work Terms Independent contractor engagement. Fully remote and open to candidates globally. Approximately 15 hours of work per week. Flexible scheduling, with the ability to choose working hours and days, including weekends, provided there is ongoing activity. Selected candidates should be prepared to begin promptly, with first tasks expected within 24 to 48 hours after onboarding is completed. Compensation Stated compensation range is $50 to $100 per hour. Compensation is output-based, with payment made for tasks that meet project specifications. Task completion time may vary based on the contractor''s experience and workflow. Minimum submission requirements apply, including a required minimum number of tasks each week. Application Process Apply for the role and complete the required screening questions. Complete an approximately 30-minute AI interview. Complete a technical assessment if one is required for the role. Proceed through hiring manager review. Applicants should be ready to start quickly if selected. Confidential