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Carlos José Aracena Sos
Senior Full-Stack Software Engineer specializing in React/Angular and FinTech/Telecom web apps
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About
Frontend engineer with telecom and fintech/banking experience in the Dominican Republic, building React/Angular apps with authentication and real-time data. Notable wins include optimizing an Oracle-backed workflow from ~10s to ~2s via DB indexing plus React memoization, and shipping a SignalR real-time transaction table in one week (award-winning) with strong unit-test-driven QA outcomes.
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Key Strengths
- End-to-end delivery of frontend portals (React) with feature-based architecture
- TypeScript interface design using base/extended types for different user categories
- Authentication implementation with JWT + request interceptors and app-wide user context
- Performance troubleshooting across stack (Oracle indexing reduced 10s to ~2s) plus React memoization
- Delivered real-time transaction table in 1 week using SignalR; received best small project award
- Proactive unit testing leading to smooth QA pass and fast production release
Reference Highlights
- Takes ownership from planning through delivery
- Leadership on frontend initiatives
- Accountable for outcomes
- Strong React and TypeScript expertise
- Builds production-grade interfaces
- Designs reusable, strongly typed components
- Focus on code quality and maintainability
- Effective collaboration with product managers and designers
- Clear, proactive communication
- Aligns on requirements early
- Summarizes decisions to keep stakeholders aligned
- Performs well in fast-moving environments with frequent releases
- Breaks features into small, well-defined increments
- Adapts to changing scope and priorities
- Promotes best practices in coding and teamwork
- Helps build a culture of collaboration and excellence
- Anticipates challenges and drives solutions
- Trusted to lead frontend for a core consumer-facing product
- Responsible and reliable with assignments
- Strong technical mastery of topics
- Takes initiative and leads frontend tasks
- High dedication (worked extra time to resolve issues)
- Builds robust production solutions
- Strong collaboration with product managers and designers
- Able to align diverse opinions and priorities
- Consistently delivers on time in iterative environments
- Trusted to lead frontend development for core consumer products
Carlos's references speak for themselves. Let us connect you.
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