> Markdown version of [/jobs/ext/1736865-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/1736865-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Developer - **Company:** Sigma Inc. - **Location:** United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Microsoft Azure, Data Structures, Software Design Patterns, Linux, DevOps, Distributed Systems, Fault Tolerance, Apache HBase, Python (Programming Language), MongoDB, NoSQL, Object-Oriented Software Development, Performance Tuning, Oop Languages, Software Engineering, Web Applications, Google Cloud, ReactJS, System Availability, Grafana, Backend, Event Driven Architecture, Low Latency, Cassandra, Graphql, Front End Software Development, Restful APIs, Amazon Redshift, Microservices - **Published:** July 30, 2026 - **Apply:** https://career.sigma.software/vacancy/senior-full-stack-developer-29/ ## About the Role Python / expert React / strong Distributed Systems / strong GraphQL / REST APIs / strong Cloud Platforms / strong 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., * 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 WILL BE A PLUS * 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, * Strong problem-solving mindset * Ownership and accountability * Proactive communication skills * Ability to work in fast-paced environments * Team-oriented attitude with collaborative mindset ## Description 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. Customer Our Customer is a leading marketplace specializing in pet products with a strong online presence and a large-scale digital commerce ecosystem. The company offers an extensive catalog of products for pet owners, including food, accessories, and healthcare solutions. Focused on customer satisfaction and innovation, the organization continues to expand its E-commerce capabilities to deliver seamless shopping experiences to millions of users. Project The project focuses on developing a scalable and high-performance E-commerce platform for a major pet products marketplace. The solution is designed to support millions of customers while ensuring reliability, low latency, and fault tolerance across distributed systems. The team is building modern backend services, event-driven architectures, and responsive frontend applications to enhance customer experience and support business growth. Key Technologies: Python, React, REST APIs, GraphQL, AWS, Google Cloud, Azure, Linux, MongoDB, Cassandra, HBase, Redshift, Microservices, * 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 ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [#90DaysOfDevOps - The DevOps Learning Journey](https://www.wearedevelopers.com/videos/548-90daysofdevops-the-devops-learning-journey) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Best Job Search Websites of 2025](https://www.wearedevelopers.com/magazine/368-the-best-job-search-websites-of-2025) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [Fullstack developer salary in Germany [2023]](https://www.wearedevelopers.com/magazine/197-fullstack-developer-salary-in-germany-2023)