Fernando – Python, Typescript, Django

A payroll API platform that enables other payroll service providers to run payroll processes for their clients. The system offers embeddable front-end components and a comprehensive backend for handling payments, risk evaluation, and ledger tracking. The project focused on building and maintaining integrations with third-party providers, managing financial data accuracy, and supporting internal and external tooling for risk and payment operations.

• Developed and maintained risk-related features and payment ledgering logic within a Django-based backend;
• Built and updated third-party integrations to support automated payroll and financial operations;
• Contributed to the front-end codebase (~30% of the time) using React.js and TypeScript;
• Worked on embedded UI components for partners and internal tools for monitoring risk and tracking payments;
• Fixed and maintained internal systems responsible for tracking client money movement;
• Created and maintained multiple risk workflows to support fraud detection and operational safeguards.

Routable is a U.S.-based startup focused on automating and streamlining B2B payment processing. The platform acts as an integration layer between companies’ general ledger systems and banking infrastructure, enabling automated handling of payables and receivables. The product supports connections with popular cloud accounting services like NetSuite, Xero, Sage Intacct, and QuickBooks.

• Built and maintained ledger integrations for automating money movement tracking between partner companies;
• Developed business logic for managing transactions and accounting data through SOAP and REST APIs;
• Implemented RTP (Real-Time Payments) support within the platform;
• Participated in integration work with external accounting platforms such as NetSuite, Xero, Sage Intacct, and QuickBooks;
• Collaborated with cross-functional teams using CI/CD pipelines powered by CircleCI;
• Ensured scalability and reliability of ledger processes by leveraging Celery for background tasks.

A platform designed to optimize the process of quoting, managing, and analyzing cleaning service providers for commercial buildings. The product aimed to streamline communication between building managers and vendors, as well as improve cost estimation and pricing accuracy.

• Developed product features within a cross-functional development team;
• Built a real-time chat integration for efficient communication between users on the platform;
• Enhanced the pricing engine by improving its performance and scalability;
• Worked on both backend and frontend tasks, contributing to the full product stack;
• Participated in infrastructure integration and deployment using cloud platforms;
• Contributed to the planning and implementation of product improvements based on user needs.

Large-scale telecom enterprise serving over 60 million customers, with a strong focus on modernizing internal systems for sales, customer support, and field operations. The engineering team was responsible for multiple business support systems, using diverse technologies across the frontend and backend domains.

• Acted as technical lead across multiple internal development initiatives;
• Designed technical solutions and architecture in alignment with business goals;
• Led requirement analysis and system design discussions with cross-functional teams;
• Delivered high-impact systems, including a CRM for fiber sales, a dynamic customer support platform, and a mobile app for door-to-door sales;
• Coordinated the work of development teams, providing mentorship to junior and mid-level engineers;
• Ensured best practices in code quality, system performance, and maintainability;
• Contributed to decision-making processes regarding technology choices and system integration.

It is a large-scale implementation of an optical fiber (GPON) network across multiple enterprise systems. The initiative required updating and integrating dozens of systems—ranging from legacy PL/SQL applications to modern Java-based platforms—to support the rollout and operation of a new optical fiber infrastructure. In addition to adapting existing systems, several new applications were developed to ensure the end-to-end support of the GPON network within the BSS (Business Support Systems) domain.

• Acted as a solution architect and developer for the BSS layer, ensuring technical alignment with the overall project goals;
• Designed scalable, modular solutions to support GPON optical network requirements across various business domains;
• Coordinated the technical implementation of the solution with a dedicated team of three developers;
• Developed and adapted key Java-based systems to support new network provisioning and service delivery flows;
• Ensured integration with legacy PL/SQL systems while maintaining system stability and performance;
• Contributed to the architectural decisions, collaborating with a broader team of over 20 developers and architects;
• Participated in technical planning sessions, reviews, and documentation to ensure clarity and consistency across systems;
• Assisted in defining technical requirements, aligning business needs with infrastructure capabilities.