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Stelle · Principal

Founding Staff Software Engineer • Python/FastAPI

Softwareentwickler • Principal • Remote • Vollzeit Europäische Union EU/EMEA

A hands-on, founding-level backend engineering role at Neuroscale, building the core APIs, orchestration, and data infrastructure behind Arbi, an AI-driven recruiting platform.

Responsibilities

  • Design, build, and maintain backend systems that power Neuroscale's Arbi platform
  • Develop and scale REST APIs using Python and FastAPI
  • Build production-ready systems on PostgreSQL, Redis, OpenSearch, Celery, and Temporal
  • Architect and optimize systems for large-scale, high-throughput workflows
  • Build, deploy, and maintain backend services on AWS
  • Own containerized deployments, CI/CD pipelines, and infrastructure reliability
  • Support integrations, data pipelines, workflow automation, and asynchronous processing
  • Help define backend architecture, engineering standards, observability, and performance practices
  • Work with product, AI, and frontend teams to deliver B2B and B2C SaaS features
  • Mentor engineers and raise the engineering bar
  • Contribute to AI-enabled engineering workflows using tools such as Cursor and Claude Code

Requirements

  • Strong backend engineering experience with Python
  • Deep hands-on experience with FastAPI
  • Strong production experience with PostgreSQL and Redis
  • Experience using OpenSearch
  • Hands-on experience with Celery and Temporal
  • Proven experience building robust REST APIs
  • Experience working with large-scale datasets
  • Experience deploying and managing backend systems on AWS

Soft skills

High ownership and a builder mindsetComfortable operating at staff, architect, or founding-engineer levelMentoring instinct and desire to raise team qualityAble to balance speed with sound engineering judgment in a startup environment

About the company

Neuroscale builds Arbi, an AI recruiting operating system that unifies talent workflows from first touch to hire, integrating directly with ATS systems and orchestrating AI agents for sourcing, outreach, screening, and candidate intelligence. The company is backed by top operators and investors, participates in the NVIDIA Inception Program and the HPE Unleash AI Program, and holds an active DoD SBIR Phase II award.

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