INTL Senior Backend Software Engineer

Job Description

Smart

X Advisory Solutions is seeking an experienced Senior Backend Software Engineer to take ownership of an existing Python-based application originally developed by a contractor. This engineer will be responsible for understanding, maintaining, and evolving the current system, and ultimately migrating it into Smart

X’s core technology stack and deployment model.

This is a hands-on backend role focused on Python API development, cloud infrastructure, and system ownership. The ideal candidate is comfortable stepping into an existing codebase, making architectural decisions, and owning the application end-to-end in production.

Ideal PR: $21-25 USD/HR (can max out   for an ALL-STAR! Max PR: $28 USD/HR)

Location:

REMOTE IN LATAM

• Take full ownership of an existing Python-based backend application, including maintenance, enhancements, and long-term stability
• Study, understand, and refactor contractor‑written code, ensuring it meets Smart
  
  X engineering standards
• Migrate the application into Smart
  
  X’s core platform and deployment ecosystem
• Design and build scalable, high‑performance backend services and APIs using Python
• Work extensively with AWS‑based infrastructure, including deployment and monitoring
• Collaborate with Smart
  
  X engineering teams working in C#, .NET Core, and cloud‑native services
• Own the deployment lifecycle, from development through production
• Apply strong problem‑solving, algorithmic thinking, and data analysis to backend challenges
• Ensure reliability, performance, and maintainability of production systems

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances.

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• Strong professional experience with Python for backend development and API creation
• Experience working with AWS in production environments
• Hands‑on experience with Redis, cloud‑native architectures, and distributed systems
• Solid understanding of data structures, algorithms, and mathematical problem‑solving
• Experience maintaining and modernizing existing codebases, especially those built by third parties
• Ability to independently own projects and make architectural decisions
• Strong backend engineering mindset with a focus on performance, reliability, and scalability
• Experience with C#, .NET Core, or willingness to work closely with teams using that stack

• Terraform or infrastructure‑as‑code experience
• Background in data‑heavy systems, analytics, or computation‑focused applications
• Experience migrating applications between platforms or deployment environments
• Familiarity with CI/CD pipelines and Dev Ops best practices