I build intelligent
digital products
that scale with confidence.I build intelligent digital products
that scale with confidence.
I'm Kayky Aguiar, a senior full-stack engineer with more than nine years of experience creating scalable web platforms, modernizing complex applications, and connecting polished interfaces with reliable backend and cloud systems.
Role
Senior Full-Stack Engineer
Product platforms from UI to cloud
Experience
9+ years
Shipping production software since 2017
Career path
Commerce → Health → Cloud → AI
Loblaw · NGX · Avantsoft · Companion
What I deliver
Platforms & modernization
Dashboards, APIs, workflows, and integrations
Core strengths
React · Node.js · Python
AWS · GCP · testing · mentorship
- 9+ years of experience
- Frontend to cloud delivery
- Product-focused engineering
- Automated testing and quality
- Global team collaboration
Products and platforms built for real-world complexity.
my work across cloud infrastructure, healthcare, digital commerce, and AI-powered modernization.
Engineering with equal attention to systems, users, and long-term quality.
I'm Kayky Aguiar, a senior full-stack engineer with more than nine years of experience building web applications across cloud infrastructure, healthcare, digital commerce, and AI-powered productivity.
My work spans frontend architecture, backend services, API integrations, automated testing, cloud deployments, and product modernization. I enjoy turning complex requirements into maintainable systems and intuitive user experiences.
I work closely with designers, product teams, clients, and engineers throughout the development lifecycle. Beyond implementation, I care deeply about architecture, code quality, performance, mentorship, and creating software that teams can confidently evolve.
Working Principles
From interface details to production architecture.
Frontend Engineering
Building interfaces that are fast, accessible, and maintainable — from design systems to complex reactive data flows.
Backend & APIs
Designing reliable service layers, data contracts, and integrations that scale with product requirements.
Cloud & Infrastructure
Deploying and maintaining cloud-native systems with a focus on reliability, cost efficiency, and operational clarity.
Data, AI & Quality
Connecting data pipelines, integrating AI into real workflows, and building the test coverage that keeps systems trustworthy.
Nine years of building, modernizing, and improving digital products.
February 2026 – July 2026
Companion Group Ltd.
Senior Full-Stack Engineer
AI implementation, application refactoring, client consulting, and full-stack modernization.
May 2022 – February 2026
Avantsoft, Inc.
Senior Full-Stack Engineer
Cloud administration platforms, React applications, Python APIs, content classification, testing, and team mentorship.
April 2020 – May 2022
NGX Interactive
Full-Stack Engineer
Healthcare platforms, telehealth workflows, reusable frontend architecture, real-time communication, and automated testing.
June 2017 – March 2020
Loblaw Digital
Full-Stack Engineer
Digital-commerce modernization, frontend engineering, APIs, authentication, cloud functions, and data integrations.
A practical approach to complex product development.
Understand
Clarify users, requirements, constraints, technical risks, and product goals before making technical decisions.
Structure
Define frontend architecture, service boundaries, data flows, and integration responsibilities.
Build
Deliver maintainable features through clear code, reusable components, testing, and collaboration.
Improve
Measure performance, remove friction, reduce complexity, and prepare the product for future growth.
Available for Senior Engineering and Consulting Opportunities
Have a complex product to build or modernize?
I'm open to collaborating with teams that value thoughtful engineering, clear communication, and reliable product delivery.