6 months ago
Remote, Mexico or Mexico City, MexicoMid Level
Responsibilities
- Develop objective, verifiable evaluation criteria and rubrics for system performance.
- Review system logs and execution paths to improve reliability and code quality.
- Refactor code and optimize system behavior toward ideal outcomes.
- Test systems for vulnerabilities, data exposure, privacy leaks, prompt injection, access escalation, and edge-case failures.
- Provide detailed feedback on system performance and outputs.
Requirements
- At least 2 years of experience in backend engineering, AI automation, or systems integration.
- Strong proficiency in at least two programming languages, such as Python, JavaScript, Go, or Java.
- Experience working with SQL databases.
- Ability to build and maintain production-grade systems.
- Experience working in live, non-mocked environments with multi-step interactions.
- Strong analytical skills and attention to detail.
- Preferred: experience with multi-stage workflows, coordination tasks, APIs, databases, external platforms, system vulnerabilities, AI systems, agent-based workflows, or persistent state tracking.
Benefits
- Fully remote work with a flexible schedule.
- Project-based freelance engagement with no guaranteed hours or workload.
- Tasks are assigned based on availability and project assignment, and freelancers may accept or decline invitations.
- Payment is based only on completed tasks.
- Weekly task volume may vary.
About Lifted
Lifted builds a global platform for enterprises to source, contract, manage, and pay contingent workers with embedded compliance. The software integrates into existing contingent workforce ecosystems and supports multiple worker types across countries. Lifted operates as an Upwork company, serving organizations that need to centralize contingent programs and streamline cross‑border payments and documentation.