Senior / Principal Python Engineer

sigmasoftware2· BU007 (oxMCt)
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🌍 Remote📍 br📍 São Paulo📍 São Paulo, SP, Brazil📍 SPFull time

About this role

Company Description

Join a project where scalable backend engineering meets modern AI-driven financial technology. We are looking for a Senior / Principal Python Engineer to help build and evolve high-load payment and revenue systems used by businesses worldwide.

You will work on cloud-native backend services, distributed systems, and payment infrastructure while collaborating with Product, Frontend, AI, and Engineering teams. This role is ideal for engineers who enjoy solving complex technical challenges, influencing architecture decisions, and driving engineering excellence.

We at Sigma Software value technical ownership, collaboration, and continuous learning. You will join an international environment where innovation, modern technologies, and professional growth are part of everyday work.

CUSTOMER

Our Customer is a global SaaS company developing an AI-native revenue platform for modern finance and accounting teams. The company provides subscription management, billing automation, and revenue operations solutions that help organizations optimize financial workflows, improve scalability, and streamline transaction management across complex business ecosystems.

Job Description

  • 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

Qualifications

  • 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

 

    Additional Information

    PERSONAL PROFILE

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

    Frequently Asked Questions

    Is the salary disclosed for the Senior / Principal Python Engineer position at sigmasoftware2?
    The salary for this Senior / Principal Python Engineer role at sigmasoftware2 is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
    Is the Senior / Principal Python Engineer job at sigmasoftware2 remote?
    Yes, this Senior / Principal Python Engineer position at sigmasoftware2 is remote, with team members based in br, São Paulo, São Paulo, SP, Brazil, SP. You can work from home or anywhere in the supported regions.
    Is the Senior / Principal Python Engineer role at sigmasoftware2 full-time or part-time?
    This is listed as a Full time position. It is posted as a Senior / Principal Python Engineer role in the BU007 (oxMCt) department at sigmasoftware2.
    Which team or department does the Senior / Principal Python Engineer at sigmasoftware2 belong to?
    This Senior / Principal Python Engineer position is part of the BU007 (oxMCt) department at sigmasoftware2. See the full job description for more information about the team structure and responsibilities.
    How do I apply for the Senior / Principal Python Engineer position at sigmasoftware2?
    Click the "Apply Now" button on this page. You will be redirected to sigmasoftware2's official application portal hosted on smartrecruiters where you can submit your application directly.
    When was the Senior / Principal Python Engineer job at sigmasoftware2 posted?
    This Senior / Principal Python Engineer position at sigmasoftware2 was posted on Jul 21, 2026. Apply as soon as possible — early applications are often reviewed first.
    Senior / Principal Python Engineer
    sigmasoftware2
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