Founding Engineer / Fintech / $250,000 / Hybrid (2 days) / New York, NY

<h3>Job Description</h3><div><p><strong>Senior Software Engineer (TypeScript / React / LLM Systems) • AI Infrastructure • $250,000 • Hybrid (2 days/week) • New York, NY</strong></p>\n<p><br /></p>\n<p><strong><em>Must be based in NYC &amp; the role requires US Citizenship due to regulatory constraints. No <span>sponsorship/visas/Green</span> Card.</em></strong></p>\n<p><br /></p>\n<p><strong>About the Role</strong></p>\n<p>We’re hiring a Senior Software Engineer to help build production-grade LLM-powered systems used in high-impact, real-world workflows.</p>\n<p><br /></p>\n<p>This is a true SWE + ML role. You’ll sit at the intersection of frontend UX, backend systems, and applied machine learning - owning features end to end. That includes React-heavy user interfaces, TypeScript services, and the pipelines that power LLM reasoning, retrieval and fine-tuning behind the scenes.</p>\n<p><br /></p>\n<p>You’ll work closely with product, design and ML engineers to ship tools where reliability, clarity and user experience matter just as much as model quality.</p>\n<p><br /></p>\n<p><strong>Why You’ll Love It:</strong></p>\n<p><strong>Own real systems:</strong> From UX flows to LLM pipelines running in production.</p>\n<p><strong>Engineering-first culture:</strong> Practical ML, not research theatre. Everything ships.</p>\n<p><strong>High-impact UX:</strong> Build interfaces used daily by technical and non-technical users.</p>\n<p><strong>Move fast:</strong> Small teams, short cycles, minimal process overhead.</p>\n<p><strong>Serious problems:</strong> Latency, hallucination control, evaluation, observability and scale.</p>\n<p><br /></p>\n<p><strong>What You’ll Do</strong></p>\n<ul>\n <li>Design and build TypeScript services that power LLM workflows including RAG pipelines, prompt orchestration and fine-tuning flows.</li>\n <li>Develop rich, intuitive React interfaces for AI-driven products - heavy focus on UX, clarity and usability.</li>\n <li>Implement retrieval systems using vector databases, hybrid search and structured data sources.</li>\n <li>Work hands-on with LLM APIs and open-source models (OpenAI, Anthropic, open-weight models).</li>\n <li>Collaborate with ML engineers on evaluation, fine-tuning strategies and production rollout.</li>\n <li>Own backend architecture across Node.js services, async pipelines and model-facing APIs.</li>\n <li>Improve system reliability through logging, monitoring, tracing and failure handling.</li>\n <li>Mentor engineers and contribute to design and architecture decisions across the platform.</li>\n</ul>\n<p><br /></p>\n<p><strong>Tech Stack</strong></p>\n<p><strong>Frontend:</strong> React, TypeScript, Next.js, Tailwind CSS, Storybook</p>\n<p><strong>Backend:</strong> Node.js, TypeScript, REST, GraphQL</p>\n<p><strong>LLM Systems:</strong> RAG pipelines, fine-tuning workflows, prompt orchestration</p>\n<p><strong>Data &amp; Retrieval:</strong> PostgreSQL, Vector DBs (Pinecone, Weaviate, pgvector), Redis</p>\n<p><strong>Infrastructure:</strong> AWS, Docker, Kubernetes, Terraform</p>\n<p><strong>Observability:</strong> OpenTelemetry, Prometheus, Grafana, Sentry</p>\n<p><br /></p>\n<p><strong>Nice to Have</strong></p>\n<ul>\n <li>Experience building production LLM systems beyond prototypes</li>\n <li>Hands-on fine-tuning experience (LoRA, adapters, evaluation pipelines)</li>\n <li>Background in ML engineering or applied NLP</li>\n <li>Experience designing complex frontend UX for data-heavy or AI-driven products</li>\n <li>Familiarity with model evaluation, guardrails and hallucination mitigation</li>\n</ul>\n<p><br /></p>\n<p><strong>Interview Process</strong></p>\n<ol>\n <li>Intro Call with Open Talent (30 mins)</li>\n <li>Technical Deep-Dive (TypeScript / React + LLM systems, 60 mins)</li>\n <li>System Design &amp; Architecture (45 mins)</li>\n <li>Leadership Chat with CTO (30 mins) → Offer</li>\n</ol>\n<p><br /></p>\n<p><strong>What We Offer</strong></p>\n<p><strong>Comp:</strong> $160K-$250K W-2 (+ meaningful equity)</p>\n<p><strong>Benefits:</strong> Health, dental, vision, 401(k)</p>\n<p><strong>Time Off:</strong> Flexible PTO + company holidays</p>\n<p><strong>Growth:</strong> Conference budget, learning allowance</p>\n<p><strong>Environment:</strong> Hybrid (2 days NYC office), flexible notice period</p>\n<p><br /></p>\n<p><strong><em>Equal Opportunity</em></strong></p>\n<p>We're hiring for an Equal Opportunity Employer.</p>\n<p>Due to strong market interest, please apply early or email <strong>[email protected]</strong> to avoid missing out.</p>\n<p><br /></p>\n<p><strong><em>All NYC roles posted here first:</em></strong></p>\n<p><span>linkedin.com/in/sufyanbashir/</span></p></div>