
Glaudys Nuñez Ascanio
Verified Expert in Engineering
React Developer
Bogotá, Colombia
Toptal member since September 11, 2026
Glaudys is a senior front-end and full-stack engineer with nine years of experience building production SaaS and enterprise applications. She specializes in React, Next.js, TypeScript, Tailwind CSS, and complex UI development, with strong back-end experience in Python, FastAPI, Node.js, PostgreSQL, and REST/GraphQL APIs. Glaudys is also an AI-first developer experienced with Claude, Cursor, Copilot, and agentic development workflows.
Portfolio
Experience
- React - 9 years
- Python - 8 years
- SQL - 8 years
- TypeScript - 7 years
- Node.js - 7 years
- PostgreSQL - 6 years
- FastAPI - 5 years
- Django - 5 years
Preferred Environment
PostgreSQL, React, Next.js, TypeScript, Tailwind CSS, REST APIs, GraphQL
The most amazing...
...project I've worked on is Qonvica, a production multi-tenant SaaS built with Next.js, React, TypeScript, Tailwind CSS, Django, PostgreSQL, and REST APIs.
Work Experience
Independent Software Engineer
Freelance Clients
- Designed and built production web applications and SaaS platforms using React, Next.js, TypeScript, JavaScript, Tailwind CSS, Node.js, Python, PostgreSQL, REST APIs, GraphQL, and Docker.
- Owned product functionality end-to-end, from requirements clarification and technical design through front-end implementation, back-end/API integration, automated testing, deployment, production debugging, and ongoing maintenance.
- Built responsive dashboards, interactive application workflows, conversational interfaces, and data-driven front-end experiences with reusable component architectures, custom hooks, application state, and maintainable API integration layers.
- Developed and integrated front-end applications with Python and Node.js back-end services, authentication systems, third-party APIs, relational data models, and asynchronous workflows.
- Built AI-powered product functionality using OpenAI APIs, AI agents, tool calling, structured outputs, RAG, and external service integrations.
- Used AI-assisted development tools, including Claude, Cursor, Codex, and ChatGPT, to accelerate codebase exploration, implementation, debugging, refactoring, testing, and documentation while validating generated code before production use.
- Worked directly with clients and stakeholders to turn product requirements into maintainable production functionality while independently managing implementation priorities, technical decisions, and delivery.
Software Engineer
MoneyGram International
- Built and shipped production functionality for enterprise fintech applications supporting international money-transfer services using Next.js App Router, React, TypeScript, GraphQL, Tailwind CSS, Storybook, and Contentful.
- Developed reusable components within a shared UI library and integrated them into customer-facing applications and CMS experiences. Implemented UI from Figma specifications, created reusable component APIs, and documented behavior through Storybook.
- Integrated front-end applications with REST and GraphQL back-end services and collaborated with back-end engineers on API contracts, authentication, validation, data flows, and production behavior.
- Introduced and documented an improved front-end unit-testing workflow using Jest, React Testing Library, and existing Storybook stories.
- Investigated and resolved complex production and release-blocking issues involving shared component packages, application architecture, CloudFront caching, API behavior, and front-end integrations.
- Used Sentry and production debugging to reproduce failures, identify root causes, refactor problematic components, add regression coverage, validate fixes in test environments, and safely release changes to production.
- Worked proactively on urgent product and conversion-related changes and regularly stepped into issues outside my assigned work when they were blocking releases or other engineers.
- Participated in architecture discussions, code reviews, automated testing, CI/CD, Netlify deployments, production releases, and cross-functional collaboration with Product, QA, UX, Back-end, and Engineering teams.
Software Engineer L3
Quorum Software
- Built and maintained product functionality for a cloud-hosted enterprise SaaS platform using React, TypeScript, Redux Saga, GraphQL, Elixir, PostgreSQL, and modern front-end architecture.
- Owned features spanning front-end and back-end integrations, including implementing back-end functionality, connecting GraphQL APIs, managing complex application state, building reusable UI, and delivering complete user-facing workflows.
- Developed data-driven and interactive functionality, including complex search workflows, dynamic UI interactions, and features requiring synchronization between back-end data and front-end state.
- Collaborated closely with back-end engineers on API contracts, application data flows, integrations, validation, error handling, and technical trade-offs.
- Mentored back-end-focused engineers on React, TypeScript, Redux Saga, GraphQL, and front-end development so they could contribute independently to user-facing functionality.
- Contributed to UI/UX discussions, front-end architecture, technical decisions, code reviews, automated testing, production debugging, and implementation standards.
- Used AI-assisted development tools such as GitHub Copilot to accelerate code exploration and implementation while reviewing generated solutions before integration.
Senior Front-end Engineer
Talent.com
- Built and scaled high-traffic production applications using React, Next.js, TypeScript, JavaScript, and Node.js integrations within a large Nx monorepo supporting multiple products and engineering teams.
- Participated in establishing the front-end architecture of a major application modernization initiative, migrating legacy functionality toward React and Next.js.
- Designed and maintained reusable React and TypeScript component architectures and built a shared UI component library with Storybook.
- Defined front-end implementation patterns and helped establish project architecture, TypeScript conventions, reusable abstractions, application structure, and development workflows used by other engineers.
- Built complex interactive functionality involving application state, reusable components, filtering workflows, REST/GraphQL integrations, authentication, session handling, internationalization, and multi-domain application behavior.
- Worked extensively with server-side rendering, hybrid server/client rendering, lazy loading, SEO, metadata, caching, data-loading strategies, front-end performance, and application scalability.
- Investigated performance problems and production issues, including optimizing expensive API calls by introducing caching when a larger architectural refactor was not appropriate for an urgent production issue.
- Collaborated closely with back-end engineers on API contracts, data-loading strategies, error handling, and front-end/back-end integration patterns.
- Mentored junior engineers and back-end developers transitioning into React, Next.js, and TypeScript development. Conducted code reviews, provided implementation guidance, participated in technical decisions, and helped engineers unblock delivery.
- Worked closely with Product, UX, Back-end, and Engineering stakeholders to clarify requirements and independently drive features from technical design through production release.
Technical Lead
AKE Lab
- Served as a hands-on Technical Lead building full-stack SaaS functionality using React, TypeScript, Redux, Node.js, Python, GraphQL, AWS, and relational data systems.
- Built responsive front-end functionality and integrated applications with REST and GraphQL APIs, authentication workflows, Node.js and Python back-end services, AWS Cognito, and Oracle SQL.
- Developed back-end APIs and application services using Node.js, TypeScript, and Python, and worked across front-end/back-end boundaries to deliver complete SaaS functionality.
- Built serverless and cloud-based functionality using AWS services and integrated AWS AI capabilities, including Amazon Comprehend, into healthcare-oriented data-processing workflows.
- Contributed to front-end architecture, authentication workflows, application performance, API integration patterns, and production reliability.
- Led architecture discussions, implementation planning, technical decisions, code reviews, sprint execution, and engineering-quality initiatives while remaining actively involved in implementation.
- Mentored developers and guided technical decisions across back-end and front-end development.
- Mentored developers and helped unblock technical issues across front-end and back-end development.
Full-stack Web Developer
Soprano Agency
- Developed Python and Node.js back-end services and REST APIs for SaaS, eCommerce, and custom business applications.
- Designed relational database workflows using MySQL and implemented application business logic.
- Integrated authentication systems, payment gateways, CMS platforms, external APIs, and 3rd-party business services.
- Built customer-facing web applications integrating back-end services with React-based interfaces.
- Worked directly with clients to gather requirements, define technical solutions, and deliver production-ready software.
- Managed functionality from implementation through deployment, debugging, and ongoing production maintenance.
Software Engineer
Freelance Clients
- Built Python back-end services, REST APIs, SaaS applications, and database-driven systems for startups and small-to-medium businesses.
- Designed back-end architecture, relational data models, authentication systems, API integrations, and business workflows.
- Integrated payment providers, 3rd-party APIs, CMS platforms, and external business services.
- Developed full-stack applications combining Python back-end services with modern web interfaces.
- Worked directly with clients to translate business requirements into practical technical solutions.
- Managed projects from architecture and implementation through deployment, debugging, production support, and maintenance.
Experience
Qonvica, Multi-tenant Digital Commerce SaaS
https://qonvica.com/I designed and built the back-end architecture using Python, Django, Django REST Framework, and PostgreSQL, including tenant-scoped relational models and REST APIs for businesses, catalogs, products, services, media, and operational workflows. I implemented authentication, tenant isolation, database migrations, PostgreSQL connection pooling, media integrations, and the API contracts consumed by the Next.js front end.
I also contributed across the full stack, integrating the Django back end with a responsive Next.js application built with React and TypeScript. I also owned production-oriented concerns such as deployment, database evolution, and application maintenance.
Scindexa, Scientific Paper Aggregation Platform
I designed a modular back-end architecture using FastAPI, PostgreSQL, and SQLAlchemy. I built provider connectors and data-normalization pipelines that transform heterogeneous external records into a consistent relational representation.
I implemented REST APIs supporting search, filtering, pagination, and structured data access, managed schema evolution with Alembic, and added automated API and back-end testing with Pytest. The provider abstraction was designed to enable the integration of additional external scientific data sources without significant changes to the core application.
Habituum, Asynchronous Back-end Platform
I designed background and scheduled processing using Celery workers and Redis, separating synchronous API requests from long-running or scheduled operations to improve responsiveness and scalability. I also added operational visibility using application logging and Prometheus metrics and containerized the back end with Docker.
Brevaris, RAG-powered Document Intelligence Platform
I separated document processing, retrieval, and AI orchestration into distinct layers to improve maintainability, extensibility, debugging, and reliability. The application uses retrieved document context to ground LLM responses rather than relying exclusively on model knowledge. It also supports workflows such as summarization and structured information extraction.
Pathlot, AI-powered Travel Assistant
I structured the back end to separate agent orchestration, tool execution, integrations, and application business logic. I also integrated the back end with a conversational front end built with Next.js, React, and TypeScript. I containerized application services with Docker.
Education
Associate's Degree in Graphic Design
I.U.T. Antonio José De Sucre - Venezuela
Certifications
HackerRank Software Engineer Certificate
HackerRank
HackerRank SQL (Advanced) Certificate
HackerRank
C1 Advanced EF SET English Certificate
EF SET
Frontend Developer (React) Certificate
HackerRank
Skills
Libraries/APIs
REST APIs, React, React Redux, React Testing Library, Node.js, Redux-Saga, SQLAlchemy, Django ORM, Pydantic, AWS Amplify
Tools
Git, Logging, Slack, GitHub, Claude Code, Docker Compose, Celery, Pytest, Adobe, GitLab, Google AI Platform, RabbitMQ, Nx, Sentry, GitLab CI/CD, Vitest, Claude, Amazon Cognito, Amazon CloudFront CDN
Languages
Python, TypeScript, JavaScript, CSS, HTML, GraphQL, SQL, PHP, Elixir
Frameworks
Next.js, Jest, Tailwind CSS, Django, Flask, Django REST Framework, Alembic, JSON Web Tokens (JWT)
Paradigms
Agile, Scrum, Search Engine Optimization (SEO), E2E Testing, Testing, Clean Code, Kanban, Role-based Access Control (RBAC), Model Context Protocol (MCP)
Platforms
WordPress, Netlify, Docker, Contentful, Langfuse, Kustomer, Amazon Web Services (AWS), Vercel, AWS Lambda, Azure, Mixpanel
Storage
Databases, PostgreSQL, Redis, MySQL, Google Cloud, Data Pipelines, Oracle SQL, Elasticsearch
Other
FastAPI, Storybook, Software Engineering, Authentication, Cross-site Request Forgery (CSRF), CORS, Data, External API Integrations, Search, Pagination, Monitoring, Prompt Engineering, OpenAI Agents SDK, AI Agents, Analytics, Event Tracking, Query Optimization, OpenAI, Server-side Rendering (SSR), Caching, Styled-components, Payment APIs, APIs, Artificial Intelligence (AI), API Integration, Front-end, Full-stack Development, Security, User Experience (UX), AI Integration, Web Development, Back-end, Full-stack, Startups, AI Tools, AI-assisted Development, CMS, Agentic Coding, Core Web Vitals, SEO Tools, eCommerce, A/B Testing, Google Analytics 4 (GA4), AI Engineering, Front-end Development, GitHub Actions, JWT, API Keys, Integration Testing, API Testing, English, Database Normalization, Background Processing, Task Queues, Large Language Models (LLMs), Vector Search, Document Processing, Tool Calling, Function Calling, Database Indexing, Pgvector, Semantic Search, Azure AI Services, WhatsApp Integrations, Conversational AI, Real-time Data, Architecture, Software Architecture, Vite, Zustand, AI Chatbots, Chatbots, Data Engineering, Agentic AI, OpenAI SDK, CI/CD Pipelines, Data Modeling, Cloudflare, Web Security, Technical Leadership, Finance, Fintech, SaaS, AI Architecture, Logistics, Shipping, Prometheus, Multi-tenant Architecture, RAG Systems, RAG Pipelines, Amazon Comprehend, Telemetry
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