Darlon – React, Typescript, Node.js

A global technology integrator and digital consultancy that partners with large enterprises on cloud, networking, data, and AI would be described along these lines: it designs, builds, and manages complex technology environments end to end, helping organizations modernize infrastructure and deliver better digital experiences at scale.

• Led development of an Angular-based proxy layer to resolve cross-origin issues and streamline integrations for multiple engineering teams.
• Owned end-to-end delivery of new loyalty and gamification features, ensuring seamless rewards flows for high-traffic user journeys.
• Designed and implemented complex front-end architectures using Angular, NgRx, and TypeScript, focusing on performance and maintainability.
• Integrated and synchronized customer and loyalty data with external platforms, including third‑party marketing and CRM providers.
• Ensured code quality and reliability by implementing and maintaining comprehensive unit test coverage with Jest.
• Converted product and design requirements into responsive, pixel-perfect UI components based on Figma specifications.
• Collaborated closely with distributed cross-functional teams in a fully remote, international environment to align on requirements, delivery, and technical decisions.

A mobile-first restaurant discovery platform focused on trusted recommendations can be described as an AI-driven guide that helps people decide where to eat based on real experiences from a curated community rather than generic ratings. It emphasizes authentic word-of-mouth by turning friends, local insiders, and tastemakers into the primary source of discovery, instead of search ads or anonymous review sites.​

• Implemented an SEO strategy that led to the indexing of over 1,000 restaurant pages, boosting organic visibility.
• Engineered a type-safe schema auto-generator for GraphQL using Apollo Client and codegen libraries to reduce runtime errors.
• Created fluid user interfaces with complex animations using Motion.js library.
• Enhanced web accessibility (A11y) to ensure an inclusive user experience for all visitors.
• Achieved over 90% code coverage by creating comprehensive unit tests with Jest and e2e tests with Cypress.
• Mentored junior developers through code reviews and pair programming sessions.

A Brazilian real estate platform and mobile app that centralizes residential listings for agents, small agencies, and owners, using technology to streamline the buying and selling journey. Darlon led the technical foundation and V1 development of this Android and iOS real estate application using React Native and NestJS.

• Designed and implemented the complete application stack, including cross-platform front-end (React Native) and robust back-end (NestJS/GraphQL).
• Led the entire application lifecycle, creating CI/CD pipelines for automated deployment to Apple App Store and Google Play Store.
• Created a scalable data layer using GraphQL with auto-generated schemas for improved development speed.
• Executed a migration strategy to transform and integrate data from a legacy CMS, including optimizing over 100k+ images.
• Acted as a bridge between technical and business sides, translating requirements into technical specifications.
• Managed talent acquisition and onboarding for new developers.

A real estate marketing and development firm in Egypt that partners with buyers and investors through modern marketing and curated projects. Darlon led end-to-end technical delivery of its real estate tech startup, including the core administrative dashboard from inception to operations.

• Developed the core administrative dashboard using TypeScript and Redux for state management.
• Implemented a real-time, interactive map feature using Mapbox integration.
• Optimized Webpack build processes for improved application performance.
• Established clear Git workflows and code review processes to maintain code quality.
• Led the hiring process and onboarding for the technical team.
• Collaborated with the financial director to align technical specifications with business goals.

A Brazilian technology provider offering white-label B2B and B2C commerce platforms for wholesalers and retailers, with advanced catalog, pricing, marketplace, and payment integrations. Work involved development and maintenance of robust B2B solutions with critical payment integrations and coordination of multiple relational databases to support reliable, large-scale transactions.

• Developed critical payment integrations to ensure secure and reliable B2B transaction processing.​
• Implemented backend services using Node.js and .NET Core to support high-availability business workflows.​
• Built modern, scalable user interfaces with Next.js and React, aligned with best practices for performance and UX.​
• Managed and integrated data across PostgreSQL and MySQL databases to power core B2B features and reporting.​
• Used Git-based workflows to coordinate collaborative development across multiple repositories and projects.