Senior / Principal Python Engineer

Sigma Software · São Paulo, SP, Brazil

ExclusiveRemoteFull-timeSeniorPublished Jul 21, 2026

Apply directly on Sigma Software’s careers site — no account needed.

About the role

  • Design, develop, and maintain scalable backend services and APIs for cloud-native applications
  • Build and optimize distributed systems, payment processing pipelines, and backend infrastructure
  • Ensure high availability, security, scalability, and performance of backend systems
  • Participate in architecture discussions and contribute to technical strategy and decision-making
  • Collaborate with Product, Frontend, AI, and DevOps teams to deliver high-quality solutions
  • Mentor engineers through code reviews, technical guidance, and engineering best practices
  • Troubleshoot complex production issues and drive continuous improvements
  • Contribute to AI-powered product capabilities and AI/ML-driven initiatives
  • Promote engineering excellence, observability, and maintainability across services and infrastructure
  • 5+ years of professional Back-end software engineering experience using Python
  • Solid experience designing and building RESTful APIs and distributed backend systems
  • Strong knowledge of SQL and/or NoSQL databases
  • Hands-on experience with AWS cloud services
  • Experience with Docker and Kubernetes
  • Understanding of scalable cloud-native architectures and microservices principles
  • Experience working in cross-functional Agile teams
  • Strong problem-solving, communication, and collaboration skills
  • Ability to drive technical initiatives and contribute to architectural decisions
  • Upper-Intermediate or higher English level

WILL BE A PLUS

  • Experience with FastAPI and TypeScript
  • Experience building AI-powered user experiences or integrating AI/LLM services into Front-end applications
  • Hands-on experience with AI technologies and LLM ecosystems
  • Experience integrating OpenAI, Anthropic, or similar AI services
  • Experience working with AI SDKs and prompt-based applications

    PERSONAL PROFILE

    • Proactive and ownership-driven mindset
    • Strong analytical and systems-thinking approach
    • Ability to work effectively in a collaborative international environment

    Skills

    • Python
    • SQL
    • AWS
    • Leadership

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