Senior Backend Engineer

Ansius

New York City, USA

Updated on June 2, 2026

  • Hybrid
  • Full-time
  • Senior
  • AI and Data Analytics
  • $160,000 – $240,000 + Equity + Bonus

Job Description

We are seeking for our client a highly skilled and motivated Senior Backend Engineer to join a rapidly growing AI and Data Analytics company. This is a pivotal role where you will be instrumental in designing and building scalable backend systems, developing innovative AI-powered capabilities, and significantly influencing the long-term architecture of our platform. You will tackle complex challenges involving distributed systems, graph databases, large-scale data pipelines, and real-time infrastructure that power enterprise-grade intelligence solutions. This position is perfect for an experienced engineer who thrives on both strategic architectural thinking and hands-on development.

Key Responsibilities:

  • Design, build, and scale robust backend services using Python and Go.
  • Architect and maintain high-performance data ingestion and processing pipelines.
  • Develop and optimize APIs that power AI-driven enterprise applications.
  • Work with cutting-edge graph database technologies and production-grade Graph RAG systems.
  • Collaborate closely with AI and Machine Learning teams to seamlessly deploy intelligent features into production.
  • Design and implement systems with a focus on scalability, reliability, observability, and fault tolerance.
  • Drive critical technical architecture decisions and contribute to the platform's strategic roadmap.
  • Mentor junior engineers and champion backend engineering best practices across the team.

Requirements

Critical Requirements

  • 5+ years of professional backend engineering experience.
  • Strong proficiency in Python.
  • Experience building and scaling distributed systems and microservices.
  • Solid understanding of SQL and NoSQL databases.
  • Experience working with large-scale data processing systems.
  • Strong system design and architecture skills.
  • Experience operating in startup or high-ownership environments.
  • Excellent problem-solving and communication abilities.
  • Previous experience at top-tier AI, infrastructure, developer tooling, data platform, or fintech companies (or companies of similar scale and complexity).
  • Experience building and scaling high-impact products in fast-moving environments is strongly preferred.

Important Requirements

  • Experience with Go.
  • Experience with graph databases.
  • Knowledge of Retrieval-Augmented Generation (RAG) architectures and Generative AI technologies.
  • Experience with real-time data processing and streaming systems.
  • Understanding of Machine Learning and AI concepts.
  • Kubernetes and container orchestration experience.
  • Experience designing highly concurrent and scalable systems.

About

Our client a fast-growing Applied AI and Data Analytics company dedicated to helping enterprise clients unlock the power of their data. They leverage cutting-edge AI and machine learning technologies to deliver innovative solutions that drive business transformation and provide actionable insights. Their collaborative and supportive team culture fosters innovation and growth, offering a unique opportunity to join a well-funded, high-growth company at an early stage.