> Markdown version of [/jobs/ext/4522237-senior-staff-core-platform-engineer](https://www.wearedevelopers.com/jobs/ext/4522237-senior-staff-core-platform-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior / Staff Core Platform Engineer - **Company:** ApTask - **Location:** New York, NY, United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Amazon Web Services, Data Analysis, Cloud Computing, Cloud Engineering, Continuous Integration, Distributed Systems, Python (Programming Language), Software Engineering, Retrieval-Augmented Generation, Large Language Models, Backend, Agentic-AI - **Published:** November 2, 2026 - **Apply:** https://www.careerbuilder.com/job-details/senior-staff-core-platform-engineer--1caa4639-a0af-4f4e-aaa0-87122ae6f65e ## About the Role * 5+ years of backend, platform or infrastructure engineering. * Strong Python and cloud-native/AWS experience; distributed systems and CI/CD depth. * Built scalable SaaS/platform systems serving 100K+ users. * Hands-on product/platform engineer; recent coding experience required. * LLM/RAG/agent infrastructure experience strongly preferred. ## Description * Lyzr AI is building the enterprise infrastructure layer for AI agents - supporting orchestration, memory, RAG, tool execution, guardrails and observability. * This is a hands-on core platform role for engineers who have built scalable SaaS/platform systems serving 100K+ users., * Own core agent-platform modules from architecture through production delivery. * Build scalable, highly available backend/platform services in Python on AWS; Go is valuable. * Work on agent orchestration, memory, RAG, tool execution, guardrails and observability. * Participate in HLD/LLD, system design and platform engineering quality. * Interact with U.S. enterprise customers and travel to client sites when required.