Senior Product Engineer

At Leadtech, we’ve been redefining digital businesses since 2009, creating innovative online solutions that reach millions of users every month. With a diverse team of over 700 members from 23+ nationalities, we specialize in delivering user-centric experiences across web and mobile platforms. Leadtech is a remote-first, international team focused on building and scaling digital products used by millions worldwide, combining expertise in product, tech, data, and design.

• Python fluency with ability to build and utilize a wide range of libraries.
• 2–5 years of full-stack development experience balancing speed and quality.
• Deep proficiency in TypeScript and React on frontend (Hooks, Context API, Vite, Shadcn UI) and backend (Node.js, Express, REST APIs, PostgreSQL).
• Strong sense of UX quality with ability to distinguish good and bad user experiences.
• AI-native mindset with understanding of agentic orchestration patterns (MCP) and experience building guardrails.
• Self-driven and business-aware, focused on solving real problems and impacting metrics.

Bonus Points:

• Hands-on experience with LLMs in production, prompt tuning, RAG pipelines, vector databases (Pinecone, Weaviate), or agentic frameworks (LangGraph, CrewAI).
• Familiarity with LLM observability tools (Langfuse, LangSmith) and cloud platforms (GCP).
• Passion for AI and staying current with new models, protocols (MCP, A2A), and developer tooling.

• Build and maintain the core multiplatform AI-powered document system features end-to-end, including React frontends, Node.js/Express backends, PostgreSQL, and Databricks integration.
• Proactively instrument features, measure impact, seek user feedback, and iterate or discontinue features based on findings.
• Design and orchestrate agentic AI workflows using frameworks such as LangGraph, Claude Agent SDK, MCP protocols.
• Integrate large language models (LLMs) into product features via prompt chains, tool calling, and function execution.
• Collaborate with engineers, designers, and leadership to shape the product roadmap.
• Build, maintain, and extend automation pipelines connected with AI agents, external APIs, webhooks, and Google Cloud Platform services.
• Contribute to database schema design (PostgreSQL, BigQuery), build and maintain RESTful APIs, and help manage cloud infrastructure on GCP.

Leadtech is an Equal Employment Opportunity Employer encouraging applications from diverse backgrounds regardless of race, gender, age, religion, nationality, sexual orientation, and/or disabilities. Personal data provided will be used to manage candidacy and can be accessed, rectified, or cancelled upon request.