Leonardo Silva
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Senior Software Engineer
São Paulo, State of São Paulo, Brazil
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Senior Software EngineerBask HealthDec 2024 - Current (1 year 10 months)As a senior engineer on a fast-moving, fully serverless monorepo (Node.js, TypeScript, React/Next.js, SST on AWS), I own end-to-end delivery of new product features, system refactors, and performance tuning across our subscriber-facing platform.
• Built our Stripe Embedded Components integration from the ground up, giving subscribers a seamless in-app billing experience and cutting down support tickets numbers.
• Created an automated code-scanner that turns our Zod schemas into OpenAPI docs, feeding them straight into edge-firewall and security tools for real-time request validation.
• Linked our docs portal to the app’s JWT sign-in flow, boosting subscriber NPS through friction-free access to usage guides.
• Led the mig- Senior Software EngineerStockXFeb 2024 - Dec 2024 (11 months)As a 𝗦𝗲𝗻𝗶𝗼𝗿 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝗮𝘁 𝗦𝘁𝗼𝗰𝗸𝗫, I drove the success of our global online marketplace by developing and maintaining scalable backend solutions using Node.js and TypeScript. My role included building robust REST APIs, deploying to AWS, ensuring efficient asynchronous communication with Kafka, and continuously improving our systems through architecture enhancements and feature implementation. My ability to communicate complex technical concepts to non-technical stakeholders facilitated smooth project execution, while my teamwork skills helped foster a collaborative environment that resulted in more efficient problem-solving and innovation. 𝗞𝗲𝘆 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀:
• Designed an - Senior Software EngineerJOYJun 2022 - Oct 2023 (1 year 5 months)As a 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝗮𝘁 𝗝𝗼𝘆, I led the development and testing of critical system components, ensuring robust performance and system reliability. I demonstrated leadership by mentoring new team members, setting coding standards, and guiding them through complex problem-solving scenarios. My role required effective communication across remote teams, ensuring seamless collaboration and alignment on key objectives. I also drove performance optimization initiatives and system monitoring, contributing to significant performance improvements. 𝗞𝗲𝘆 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀:
• Optimized SQL queries with New Relic and DataDog, reducing response times by 50% and lowering CPU and memory usage by 30% across Do - Senior Software EngineerIBMJun 2018 - Jun 2022 (4 years 1 month)In 2018, I transitioned to working with Node.js and TypeScript, specializing in Microservices, GraphQL, and REST APIs. I led the design and implementation of scalable APIs while mentoring junior developers. Collaborating with cross-functional teams, I integrated complex systems and contributed to machine learning pipelines. I applied problem-solving skills to overcome technical challenges and ensured smooth communication to align team efforts and drive successful project outcomes. 𝗞𝗲𝘆 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀:
• Translated a complete Java REST API search system to a Microservices architecture using GraphQL, Node.js, and TypeScript, while also migrating our search engine from Solr to Elasticsearch. This overhaul, combined with a new - SFounder, CEO & CTO at 2 startupsSaaS for Law Firms & Mobile Gas Energy MarketplaceJul 2010 - Jul 2016 (6 years 1 month)➡️ Pioneered two dynamic startups: one focusing on SaaS for law firm action management and another on a mobile energy marketplace. ➡️ Seamlessly merged CEO and CTO roles, steering strategic vision, tech team building, and software development. ➡️ Directed all facets, from ideation and design to coding, stakeholder engagement, and team coordination. ➡️ Drove user acquisition by engaging investors, clients, and stakeholders, ensuring sustained growth.
- Senior Software EngineerIBMNov 2006 - Jun 2018 (11 years 8 months)During my first 11 years at IBM, I focused on Java-related technologies and architectures, taking on roles as a software developer, system designer, and architect. I demonstrated leadership by guiding the development and integration of critical components, mentoring junior team members, and fostering collaboration across teams. My problem-solving skills were crucial in designing and implementing REST APIs that met complex requirements. Working within Agile and Scrum environments, I ensured effective communication and teamwork, leveraging technologies like WebSphere, JMS, Lucene, Redis, SQL, and DB2 to deliver Java-centric solutions that supported key organizational goals.
- Software EngineerCesarMar 2005 - Nov 2006 (1 year 9 months)At the Central Bank of Brazil, I contributed to various projects by developing Java Enterprise components and systems integration modules. My roles included system analyst, database modeler, software architect, and mentor to junior developers. I utilized a broad range of technologies, including Java, JavaScript, Struts, Hibernate, JMS, SQL, third-party APIs, and application servers like JBoss and WebSphere, working with databases such as PostgreSQL and DB2.
Education
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- FSpecialization Software EngineeringFaculdade Boa ViagemJan 2005 - Jan 2007 (2 years 1 month)
- bachelor, Bachelor of Science Civil EngineeringUniversidade de PernambucoJan 1995 - Jan 2002 (7 years 1 month)
- CColégio Vera CruzColégio Vera CruzJan 1978 - Jan 1994 (16 years 1 month)