Senior Software Engineer

About The Company

Melow is building the AI Operating System for data: a dynamic ontology engine that makes sense across all forms of structured and unstructured data — and a new form of AI worker that executes autonomous workflows with transparent reasoning across real tools. They are creating AI middleware that helps AI understand data the way only data teams do: to reason, plan, and act inside real systems. They are still in stealth but already working with some of the most recognized companies in the world across fintech, travel, insurance, gaming, and logistics.

About The Role

Join a high-caliber team to build core infrastructure for AI systems, focusing on agent orchestration, semantic data layers, and reasoning engines using Python and LLM frameworks.

Join our small but high-caliber engineering team and help build the core infrastructure behind our agentic systems. This is a hands-on role for someone excited to ship quickly, solve complex problems, and grow into new responsibilities as the company scales.

What You’ll Work On

• Agent infrastructure: Build orchestration, memory, and execution logic for scalable autonomous systems using Python and open-source LLM frameworks (LangChain, LlamaIndex, etc).
• Ontology & semantic data layers: Contribute to our automated systems that connect structured and unstructured data into a unified “data brain.”
• Reasoning engines: Help develop pipelines that combine LLMs with symbolic reasoning and long-term memory.
• Data infrastructure: Build and maintain metadata stores, data connectors, ETL, and vectorized storage (Chroma, Pinecone, Weaviate).
• Full-stack contributions: Ship APIs and basic frontends when needed to move fast and gather customer feedback.

Requirements

• 3+ years of experience in backend, infra, or AI systems engineering
• Strong Python skills
• Familiarity with LLM frameworks and vector DBs
• Experience with data infrastructure and cloud
• Startup-ready
• Builder mindset

Required Skills

• Python
• LLM frameworks (LangChain
• LlamaIndex
• Haystack)
• Vector DBs
• Data infrastructure (dbt
• BigQuery
• Airflow)
• Cloud (GCP or AWS)
• Knowledge graphs
• Semantic data modeling
• Symbolic AI
• AI tools (Cursor
• Windsurf
• Cody)

Salary: 70000 - 100000 USD

Equity: equity