Danilo – React, Ruby on Rails, AWS

A global technology leader renowned for its premium smartphones, personal computers, and digital services ecosystem. The company generates over $400 billion in annual revenue and maintains a market valuation exceeding $4.3 trillion.

• Maintained and delivered new features for the client’s main website builder.
• Delivered new HTML components used to launch one of the company's new product websites.
• Improved the database synchronization process between remote and local environments.
• Integrated the CMS with an automated localization platform, reducing manual translation handling time.

An all-in-one workforce management platform specifically designed for small businesses managing hourly workers. It helps business owners streamline everything from tracking hours to managing team shifts.

• Led development for the Growth team, focusing on mobile integrations and web user acquisition.
• Launched an AI-driven feature allowing users to create team members and schedules by uploading a photo.
• Revamped the authentication flow by migrating from Devise to an API-based system without downtime.
• Developed an in-product experience for Top Local Workplace (TLW) award-winning locations, doubling daily signups.
• Reduced Customer Support manual operations by 90% by building a new self-serve payroll setup workflow.
• Implemented integrations with APIs, CRM systems (Zoho, Salesforce), internal services (gRPC), and analytics platforms.a

The world's largest integrated security awareness training and simulated phishing platform. It focuses on managing the human element of cybersecurity and mitigating social engineering risks.

• Worked on core products, including a Security Awareness Training.
• Refactored a critical feature to prevent a very large MySQL table from exceeding storage limits by migrating massive datasets without downtime.
• Led ElasticSearch upgrade from version 6 to 7.
• Integrated security tools.
• Implemented automated workflows for removing inactive accounts and improving system efficiency.

A leading, bootstrapped Brazilian e-recruitment platform, connecting over 22 million job seekers with thousands of corporate clients. The company provides free tools for candidates and paid SaaS recruitment software for employers, generating approximately $30 million in annual revenue.

• Contributed across ~19 services supporting the main client's platform.
• Rewrote major functionalities using Ruby on Rails and React while migrating legacy systems.
• Led development of a job posting system integrating with major job platforms (Indeed, LinkedIn) using Amazon SQS.
• Introduced feature flags using the Flipper gem and built a dashboard for managing them.