INTL Senior Full Stack Engineer

Our client is seeking a Senior Full Stack Software Engineer to play a critical role in the evolution of their technology platform. This engineer will take ownership of an existing Python-based application, maintain and enhance the application, and ultimately migrate it into their core technology ecosystem.

This role combines backend ownership, cloud architecture, and modern full-stack development. The ideal candidate is comfortable working across the entire technology stack-from Vue3 front-end applications to Python and .NET backend services-while also taking ownership of production systems, cloud infrastructure, and long-term platform strategy.

Ideal PR: $16-21/hr

Key Responsibilities

• Take ownership of an existing Python-based application, including maintenance, enhancements, technical debt reduction, and long-term stability

• Assist in the migration of the application into SMArtX's core platform architecture and deployment model

• Build and maintain scalable backend services and APIs using Python, C#, .NET Core, and cloud-native technologies

• Develop and support modern front-end applications using Vue3

• Design and consume RESTful APIs and integrate services across multiple platforms and applications

• Work extensively with AWS infrastructure, cloud services, and deployment pipelines

• Own applications throughout the full lifecycle, from development and architecture through production support and monitoring

• Work with relational and NoSQL databases, including query optimization and data modeling

• Participate in code reviews, technical design discussions, and architectural decisions

• Partner with Product, Design, and Engineering teams to deliver solutions aligned with business objectives

• Contribute to CI/CD processes, infrastructure automation, and cloud-native development practices

• Bachelor's degree in Computer Science, Software Engineering, or a related technical field

• Strong experience developing backend applications and APIs using Python

• Strong experience developing applications using C# and .NET Core

• Experience taking ownership of existing applications and modernizing or refactoring legacy systems

• Experience building and consuming RESTful APIs and distributed services

• Experience developing modern web applications using Vue3

• Experience building cloud-native applications within AWS (Lambda, ECS, API Gateway, S3, DynamoDB)

• Hands-on experience with Docker and containerized application development

• Experience with SQL Server, PostgreSQL & NoSQL technologies such as DynamoDB

• Experience with GitHub Actions and modern CI/CD pipelines

• Experience troubleshooting production issues and improving system performance

• Ability to work independently, make architectural decisions, and own projects end-to-end

• Strong communication skills - someone who will challenges processes and decision not just a ticket-taker Preferred Qualifications

• Terraform or infrastructure-as-code experience

• Experience supporting applications in startup environments - ability to wear multiple hats

• Experience with event-driven architecture and microservices

• Exposure to financial services, wealth management, portfolio management, or fintech applications

• Experience working with AI-assisted development tools and LLM-enabled workflows

• Familiarity with Babelfish or database migration tools

• Demonstrated commitment to continued learning through certifications, advanced coursework, or self-directed development