Senior Back End Engineer

Job Title: Senior Backend AI Engineer Location: Fully Remote Company Overview Founded in 2019, Elife Transfer is a fast-growing startup headquartered in San Francisco, California, at the heart of Silicon Valley. We are an all-in-one global ground transportation marketplace, enabling travelers to book airport transfers, ride-hailing, shared rides, private cars and rail tickets. Trusted by over 40 million travelers across 182+ countries, we are rapidly scaling to become the world’s go-to platform for seamless, end-to-end ground mobility. Key Responsibilities: Agent Architecture & Pipeline Design Design and operate multi-agent systems with orchestrator and specialist agents covering planning, coding, testing, and review Build feedback loops so agents can detect failures, read error output, and self-correct without human intervention Define agent tool APIs: shell execution, code interpreter, file system access, git operations, CI triggers Implement sandboxed execution environments (Docker, Firecracker, E2B) for safe autonomous code execution Automated Software Delivery Build pipelines where AI autonomously generates unit, integration, and regression tests from specifications Integrate agents with GitHub/GitLab: branch creation, PR lifecycle management, automated review bots Implement CI pipeline agents that interpret test results, triage failures, and propose fixes Automate code review: style checking, correctness analysis, security scanning — all agent-driven LLM & Reasoning Stack Design prompting strategies for code generation, test synthesis, PR narration, and review response Build and maintain RAG pipelines over codebases using vector databases with AST-aware chunking Manage context windows for long-horizon tasks that span multiple files and subsyste