Carlos Feijoo
Open to work5 years experienceApplied AI and Full Stack Engineer
Applied AI and Full Stack Engineer. I take RAG and multiagent systems from demo to production, and keep them running.
Standing Rank
Rank Not Available
Developer Badges
Skills & Technologies
51 skillsWork Experience
Founder & Engineering Lead
Qolca
- Founded and lead a studio that has served 10+ clients; engagements start as 2 month contracts and have renewed into 12 to 14 month contracts.
- Personally lead engineering for flagship accounts (Makitrack, Suppliers Ebombo, and Bilit), owning discovery, architecture, development, deployment, and operation end to end.
- Built Propaga, an omnichannel AI automation platform on WhatsApp/Instagram/Meta Business APIs with per message billing, serving LATAM SMBs.
- Design and run production RAG agents: knowledge base ingestion, semantic retrieval (pgvector), LangGraph multiagent orchestration.
- Build Model Context Protocol integrations that connect agents to client tools and data, including on the Suppliers Ebombo account.
- Implement LLM token streaming end to end, from provider APIs through the backend to the UI over SSE and WebSockets, so answers render as they generate instead of landing in one block.
- Ship full stack platforms end to end: React/TypeScript frontends, Django/FastAPI backends, payment integrations, real time WebSocket layers, AWS/GCS deployments.
- Cover client platforms with functional and integration tests: pytest against FastAPI and Django endpoints with a real PostgreSQL test database, Jest/Vitest on React frontends, and mocked Meta and LLM APIs so message and agent flows can be verified without live calls.
Technical Cofounder
Domber
- Built the full product solo: React Native mobile app with a full stack backend covering service listings, booking, provider verification, and payments.
- Shipped to production: live on Google Play, App Store, and Huawei AppGallery (domberapp.com).
Senior Software Architect
NEMO LATAM
- Led architecture and development of the core trading platform for one of Peru's best known crypto exchanges, with real time market data and order flows for thousands of active users.
- Designed and shipped the first VISA card integration on a Peruvian crypto exchange, enabling fiat to crypto settlement through international card processors.
- Delivered the P2P trading system and a mass payments module: multiparty transaction coordination with full traceability and antifraud controls.
- Provisioned and ran the full AWS infrastructure from scratch (EC2, ALB, RDS, CloudWatch) with Docker and Kubernetes, at 99.9% uptime in a 24/7 financial environment.
- Wrote functional and integration tests for trading and payment flows (pytest and Django TestCase), exercising the API plus PostgreSQL path end to end and mocking third party card processors so settlement logic could be verified without live transactions.
- Mentored 2 engineers; established the code review and architecture standards adopted across the team.
Full Stack Engineer
NEMO LATAM
- Founding engineering team member on the platform that became Peru's first physical crypto exchange, from greenfield development through public launch.
- Built core frontend surfaces in React/TypeScript: exchange dashboard, order books, and account management flows used daily by thousands of users.
- Developed backend APIs in Django, FastAPI, and Node/Express for trading operations, wallet management, and third party integrations, including GraphQL services alongside REST.
Digital Marketing Analyst (Engineering)
VISIVA
- Developed Python automations that executed email and WhatsApp outreach campaigns based on lead segmentation from the analytics team, replacing a manual send process.
- Automated recurring operational tasks (reporting, list handling) for the marketing team.
Technical Lead
Workay
- Designed and built the platform end to end (React frontend, Django backend) covering student profiles, job listings, and matching flows.
- The platform helped more than a dozen UTEC students land roles with US startups.
Freelance Full Stack Developer
Independent
- Designed and built a variety of full stack web applications end to end using Django and Node/Express (backend) and React (frontend), including GraphQL API servers.
- Delivered complete projects solo: data modeling, REST APIs, responsive UIs, authentication, and deployment.
- Worked directly with clients to scope requirements and ship practical, maintainable products.
Projects
Propaga
- Omnichannel AI automation platform on WhatsApp/Instagram/Meta Business APIs with per message billing, serving LATAM SMBs.
Leaderboard Standings
Leaderboard Position Pending
Global test scores, peer standing percentiles, and algorithm leaderboard ranks are updated dynamically.
Assessment Highlights
Assessments Not Completed
Coding evaluations, system assessment results, and conceptual score badges will appear here after taking a test.
AI Collaboration Score
AI Collaboration Score Pending
Developer coding behavior, assistant cooperation, and AI pair-programming indicators are evaluated during live coding sessions.
Role Compatibility Profile
Role Compatibility Analysis Pending
Custom matching reports, candidate role compatibility percentiles, and core engineer strength profiles are processed once conceptual code screenings are complete.
Achievements
ULIMA Innovation Contest
First place, ULIMA Innovation Contest, won seed funding to develop the project.
Impact Startup Competition 2022
Finalist, Impact Startup Competition 2022 (Cusco).
About Details
Professional Bio
I deploy AI systems that survive contact with the real world. Most AI projects die between demo and production; my work lives in that gap. Founder of Qolca (10+ clients, all renewed). Previously architected NEMO LATAM's crypto trading platform and its first VISA card integration, at 99.9% upti
Industrial Engineering studies in Industrial Engineering
UTEC, Universidad de Ingenieria y Tecnologia (2019 - 2024)
Full Stack Web Development Specialization
The Hong Kong University of Science and Technology (via Coursera) ( - Present)