Senior Full Stack Developer (Python + React)
About The Position
Looking to build large-scale E-commerce solutions used by millions of customers? We are seeking a Senior Full Stack Developer with strong Python and React expertise to join a high-impact project for a leading pet products marketplace. This is a full-time remote opportunity based in Brazil. We at Sigma Software create innovative digital products that combine scalability, performance, and outstanding user experience. In this role, you will collaborate with experienced engineers and cross-functional teams to develop modern distributed systems and customer-focused web applications. Why join us? You will work with modern technologies, influence architectural decisions, and contribute directly to the growth of a large-scale E-commerce platform while enjoying flexible work conditions and professional development opportunities.
Requirements
- 5+ years of software development experience with object-oriented programming languages, including Python
- Strong backend development experience with Python
- Experience building scalable distributed systems and microservices
- Practical experience with REST and GraphQL APIs
- Strong understanding of OOP principles, design patterns, algorithms, and data structures
- Commercial experience with React
- Hands-on experience working in Linux/Unix environments
- Experience with cloud platforms such as AWS, Google Cloud, or Azure
- Familiarity with relational and NoSQL databases including HBase, Cassandra, MongoDB, and Redshift
- Ability to work independently and collaboratively in distributed teams
- Upper-Intermediate English level or higher
Nice To Haves
- Experience with high-load E-commerce platforms
- Knowledge of event-driven architecture patterns
- Experience with performance optimization and observability tools
- Familiarity with CI/CD pipelines and DevOps practices
- Experience supporting production environments with high availability requirements
Responsibilities
- Design, develop, and implement large-scale distributed systems capable of handling substantial data volumes
- Build scalable backend services and microservices using Python
- Develop and integrate REST and GraphQL APIs
- Create responsive frontend functionality using React
- Implement event-driven solutions to improve scalability and system performance
- Develop and execute unit, API, regression, and performance tests
- Optimize applications for scalability, reliability, and low latency
- Collaborate with cross-functional teams to troubleshoot and resolve production incidents
- Contribute to architecture discussions and technical decision-making processes
Benefits
- flexible work conditions
- professional development opportunities
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
