Hagar Viana Telles
I'm Hagar Viana Telles, a software engineer and full stack developer based in São Gonçalo, Brazil.
About
I’m Hagar Viana Telles, a software engineer and full stack developer based in São Gonçalo, Brazil. I specialize in building scalable systems, modernizing architectures, and automating complex processes to deliver business impact. I enjoy collaborating with cross-functional teams to ship reliable software and continuously improve performance and developer experience.
Over the years I’ve led architecture definitions, implemented automation workflows, and driven cloud-native solutions across AWS and Azure. I’m passionate about clean code, robust testing, and crafting delightful user experiences while keeping security and scalability at the forefront.
- 3 years' experience
- Joined February 2026
Industry experience
- Software & Internet
- Professional Services
- Media & Entertainment
More experts in Rio de Janeiro, Brazil
Work experience· 4 roles
Technical Lead for a Chrome extension architecture: defined and implemented a corporate extension using HTML5, Tailwind, and JavaScript with a focus on responsive UX and performance. Built orchestration flows via N8N connecting Zendesk, FreeScout, and internal APIs. Implemented data persistence with MongoDB and Redis on AWS, eliminating repetitive manual support work. Refactored a critical Node.js ingestion microservice with clearer architecture, robust validations, and observability. Resolved architectural flaws causing internal DDoS and rate-limit blocks.
AI-based SDR agent: developed a WhatsApp/Instagram lead qualification and outreach flow that qualified leads and completed a year’s worth of work in 2 months. Orchestrated integrations and applied Prompt Engineering for personalized service. Created high-performance web interfaces using React and Next.js to support sales funnel activities.
Screening Automation: built a profile import system (LinkedIn/PDF) using Azure Functions and Azure OpenAI, reducing candidate registration time by ~90%. Product Engineering & DevOps: refactored PDF generators, implemented caching strategies, and set up CI/CD pipelines in Azure DevOps. Full Stack Development: built a voucher management system and collaborated on a CRM platform using Next.js, TypeScript, and AWS Cognito.
Education
Certifications and awards
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