AI
I connected real applications with AI models such as Gemini, using MCP to expose useful tools and context so AI features can work with product workflows instead of isolated prompts.
Software Engineer and Fullstack Developer
Helmer Davila.
I build software around real business problems. From thoughtful interfaces to reliable backend systems, cloud infrastructure, and AI integrations.
About meAbout me
I am a full-stack software engineer who builds product-focused systems across logistics, e-commerce, healthcare, developer experience, and startups. My work usually sits where business workflows meet reliable software: backend services, cloud architecture, integrations, automation, and interfaces that help teams move faster.
What I do
Frontend
I used languages like HTML(5), CSS(3) and JavaScript to create useful UI in different projects. I built sites from scratch, with or without frameworks.
Backend
I coded the requirements and restrictions for the businesses, using backend frameworks with excellent scalability options and faster releases of new features.
SysOps
I deployed new updates with pipelines, setting test and production environments, using logging tools for constants reviews of where and when the code failed.
How I work
The patterns I bring to teams: understanding the domain, connecting systems carefully, improving developer workflows, and keeping software observable.
Product-minded engineering
I start from the business workflow and use AI-assisted analysis where useful to shape software around real constraints, users, and operational feedback faster.
Integration-heavy systems
I connect product workflows with external systems such as ERP platforms, HL7 healthcare flows, AI models, MCP tools, and cloud services.
Developer experience
I improve local setup, component libraries, tooling, documentation, and support paths, using AI where it helps engineers spend less time fighting the platform.
Reliability habits
I use tests, monitoring, automation, and deployment discipline to make changes easier to review, release, and operate.
Experience domains
Business domains where I have built and maintained software, from logistics and e-commerce to healthcare workflows and developer platforms.
Portless
Warehouse operations
Backend services for fulfillment, logistics workflows, reconciliation, ERP integrations, and operational diagnostics.
- GCP
- Firebase
- Cloud Run
- Pub/Sub
- ERP
SSENSE
Luxury e-commerce returns
Returns and post-purchase flows powered by event-driven systems, serverless infrastructure, monitoring, and test automation.
- AWS
- Serverless
- Python
- TypeScript
- Datadog
AlayaCare
Home care developer experience
Developer experience and platform tooling for healthcare teams, including setup-time reduction, component libraries, and CLI workflows.
- DX
- Vue
- NodeJS
- Docker
- Storybook
Ambrea
Food delivery e-commerce startup
Co-founded a food delivery marketplace in 2017, leading platform development, product delivery, and a small engineering team.
- Laravel
- PHP
- Vue
- React
- Leadership
Referwell
Healthcare referrals
Patient referral workflows in the US healthcare system, with microservices and healthcare interoperability work around HL7.
- HL7
- PHP
- NodeJS
- Microservices
- AWS
Biteline
Dental staffing and healthcare hiring
Hiring platform for dental professionals, connecting hygienists, assistants, dentists, and offices with staffing opportunities.
- React
- Ionic
- GraphQL
- NestJS
- AWS
Mesa24/7
Restaurant reservations
Reservation system for gourmet restaurants in Peru, including a direct integration with Maido for booking experiences.
- Ruby on Rails
- AWS
- Reservations
- Hospitality
Certifications
AWS certifications that support my work across cloud architecture, serverless systems, and AI-enabled products.
AWS
AWS Certified Solutions Architect - Associate
Validates designing secure, resilient, high-performing, and cost-aware AWS architectures across compute, storage, networking, and managed services.
AWS
AWS Certified AI Practitioner
Validates foundational knowledge of AI, machine learning, generative AI concepts, responsible AI, and how AWS AI services fit into real products.
My stack
AI Frameworks
Mastra / Vercel AI / MCP SDK
Backend
Python / NodeJS / PHP
Frontend
React / Angular / Vue
Server management
