# Juan Ignacio Pullaro > Senior Software Engineer | Back-end Engineer | Python | AWS Location: United States, United States Profile: https://flows.cv/juanignaciopullaro Backend Software Engineer with 5+ years of experience building, scaling, and modernizing high-performance systems in production environments. I specialize in Python-based backend development, distributed systems, and cloud-native architectures, with a strong focus on reliability, performance, and system design. I have contributed to mission-critical platforms, including Venmo’s Checkout systems, where I worked on migrating legacy monolithic services to modern FastAPI-based microservices, improving latency, system stability, and scalability. My work also includes designing and maintaining Django APIs to support seamless integrations for new merchants and evolving business needs. I bring hands-on experience with: Python, FastAPI, Django Microservices & monolith-to-microservices migrations System design & API architecture Performance optimization & latency reduction Cloud platforms (AWS) Monitoring, observability & on-call operations High-availability, high-traffic production systems I thrive in fast-paced environments where scalability, reliability, and clean architecture are critical. I’m proactive, adaptable, and continuously focused on delivering measurable impact through efficient, maintainable backend solutions. I’m open to backend software engineering roles where I can contribute to building scalable platforms and solving complex system challenges. ## Work Experience ### Senior Software Engineer @ Novi Jan 2026 – Present ### Senior Software Engineer @ Venmo Jan 2024 – Jan 2026 As a Software Engineer at Venmo, I’m part of the Checkout team, responsible for ensuring a seamless and high-performance payment experience for millions of users. My work focuses on redesigning and migrating core services from a monolithic Graph-based architecture to a modern, scalable FastAPI-based application, improving system maintainability, latency, and overall performance. I also design and develop new APIs using Django, enabling smooth integrations for new merchants and partners. In addition to development, I actively participate in monitoring and on-call rotations, ensuring system reliability, fast incident response, and continuous service availability. My role combines performance optimization, system modernization, and operational excellence to support Venmo’s critical payment flows. Key responsibilities & achievements: * Led redesign and migration from monolith Graph architecture to FastAPI microservices * Built and maintained scalable APIs using Django * Improved checkout latency and performance for high-traffic payment flows * Supported and integrated new merchants into the Venmo ecosystem * Real-time monitoring and participation in on-call rotations ### Senior Software Engineer @ Gatik Jan 2023 – Jan 2024 | Remote As a key contributor to the tracking algorithm development team, I collaborated on enhancing and integrating cutting-edge algorithms for Autonomous Vehicles. Additionally, I designed and implemented robust APIs for user registration, password reset, and a new portal based on React—a contemporary alternative to the Django Admin system. My responsibilities also included crafting responsive and efficient front-end components using React and Redux to deliver a seamless user experience. Furthermore, I played a vital role in the development and maintenance of email templates, ensuring effective communication with users. I actively collaborated with designers and product teams to translate requirements into high-quality software solutions. Participating in code reviews was a routine part of my responsibilities, where I upheld best practices, promoted code quality, and fostered knowledge sharing within the team. ### Software Engineer @ Eventbrite Jan 2021 – Jan 2023 | Argentina I have a proven track record of designing, developing, and maintaining scalable and reliable software systems. My technical skills include proficiency in Python, Django, and microservices architecture, as well as in cloud computing platforms such as Amazon Web Services (AWS). In my current role at Eventbrite, I am responsible for bugfixing and enhancing the functionality of our existing software systems while also migrating legacy software to modern platforms. I am proficient in using tools like Git and JIRA to manage code repositories and track issues, and I have experience working in Agile development environments. Some of my key accomplishments include: Designing and developing a microservices-based architecture for our flagship product, resulting in improved performance, scalability, and maintainability Migrating legacy software to AWS infrastructure, resulting in reduced costs and improved reliability Leading bugfixing efforts to ensure that our software systems meet quality standards and user requirements. ### Python Developer @ Globant Jan 2020 – Jan 2021 | Argentina We develop solutions for the Internationals Rollout of an eCommerce for a telehealth medical company using django and vue. Developing micro-services for AWS using Dynamodb and Aiohttp. Manage translations for different countries Solving bugs for eCommerce in python and javascript related. ### Data Engineer @ Ministerio de Seguridad - Gobierno de la Provincia de Santa Fe Jan 2017 – Jan 2020 | Provincia de Santa Fe, Argentina I was responsible for the extraction, transforming and visualization data from different sources. I'd been using python with Numpy and Pandas to create datasets. I develop solutions using Arcgis and Qgis for geografical data and I have created multiple BI solutions using Qlik Sense. I was in charge of designing and creating the data pipelines. ## Education ### Computer System Engineer in Computer Engineering Universidad Tecnológica Nacional Jan 2015 – Jan 2021 ## Contact & Social - LinkedIn: https://linkedin.com/in/juanipullaro --- Source: https://flows.cv/juanignaciopullaro JSON Resume: https://flows.cv/juanignaciopullaro/resume.json Last updated: 2026-03-22