Role Description We are seeking a Senior Backend Developer with at least 5 years of professional experience to join our growing team. You will play a key role in designing, building, and maintaining backend systems, with a strong focus on large-scale crawlers and supporting data-driven and infrastructure solutions. - Lead the design, development, and deployment of backend systems and data products. - Build scalable, high-performance infrastructure to support data-heavy applications. - Optimize backend systems for maintainability, performance, and scalability. - Manage and troubleshoot production systems, ensuring uptime and data accuracy. - Develop and refine automated data crawling/scraping pipelines. - Collaborate with developers, analysts, and stakeholders across time zones. - Mentor junior developers, ensuring adherence to best practices and code quality. - Maintain up-to-date technical documentation. - Explore new ideas in data-driven and infrastructure-focused applications, including AI-driven solutions. - Leverage AI/ML models to streamline experimentation, advance research, and deliver production solutions. Qualifications - 5+ years of professional backend development experience with at least 3+ years of hands-on Python experience in production (Flask, FastAPI preferred). - Strong knowledge of Linux systems and SQL databases (PostgreSQL/MySQL). - Proven experience designing, building, and supporting backend systems from scratch. - Comfortable managing and optimizing live production environments. - Familiarity with data crawling/scraping techniques and large-scale data processing. - Excellent communication skills and ability to work independently in a remote setup. Requirements - Experience with PHP in hybrid environments (LAMP/LEMP stacks). - Background in infrastructure, scaling systems, and distributed databases. - Hands-on experience with data crawling at scale. - Interest or prior work in AI/ML-driven solutions. - Solid foundation in statistics, mathematics, and machine learning. - Previous experience with tech startups or software companies. - Mentorship or leadership experience with junior developers. - Contributions to personal or open-source projects. Benefits - Fully Remote Work: Work from anywhere with reliable internet. - Healthcare Coverage for you and your family. - Paid Leave & Holidays, with time to rest and recharge. - Equipment Funds Support to help set up or upgrade your home office. - Profit Sharing: Monthly and annual bonuses tied to performance. - Long-Term Career Growth: Be part of a company that values stability and growth. - Collaborative Culture: Work with a supportive, globally distributed team.

• Work end-to-end on mobile application development, from design through release and maintenance; • Lead technical decisions and contribute to defining the mobile architecture; • Design modular, scalable, and maintainable applications; • Manage state efficiently using Provider, Riverpod, Bloc, or similar solutions; • Consume and integrate REST and GraphQL APIs; • Ensure code quality through unit, widget, and integration tests; • Continuously work on application performance optimization; • Perform builds and manage the publishing process in the Android and iOS stores; • Implement and evolve native integrations when necessary; • Work with observability, using logs, metrics, crash reports, and analytics tools; • Monitor applications in production and lead incident resolution; • Participate in technical and functional refinements with the team; • Take part in Scrum ceremonies, such as planning, daily stand-ups, review, and retrospective; • Conduct code reviews and mentor less experienced developers; • Actively collaborate with Backend, QA, UX, DevOps, and SRE teams.

• Desenvolver, manter e evoluir aplicações mobile utilizando Flutter; • Implementar interfaces responsivas por meio de widgets e layouts; • Gerenciar o estado da aplicação utilizando Provider, Riverpod, Bloc ou soluções similares; • Consumir e integrar APIs REST; • Garantir qualidade, usabilidade e performance das aplicações; • Participar de refinamentos funcionais e técnicos junto ao time; • Atuar nas cerimônias do Scrum (planning, daily, review e retrospectiva); • Implementar e manter testes unitários; • Realizar builds e apoiar o processo de publicação nas lojas Android e iOS; • Atuar na análise de logs e troubleshooting das aplicações; • Participar de code reviews, promovendo boas práticas de desenvolvimento; • Colaborar com times de Backend, QA e UX para evolução do produto.

• Support the development of new mobile features using Flutter, following technical guidance and standards defined by the team; • Implement screens, components and navigation flows using widgets and responsive layouts, ensuring good usability and adherence to the design; • Integrate the app with backend services by consuming REST APIs; • Work on bug fixes, code adjustments and implementation of minor improvements, contributing to the application’s stability; • Participate in the team’s agile ceremonies, such as dailies, plannings and reviews, collaborating on activity alignment; • Assist in writing and maintaining unit tests to ensure code quality and reliability; • Take part in code reviews, receive feedback and make necessary adjustments for technical growth; • Actively collaborate with the development team, sharing knowledge and pursuing continuous learning