Simera Professional Key (SPK)

Alexmar N

Brasil

Senior Full Stack Developer

$ 3,700/month

7 yrs exp

Senior Full Stack Developer with 7+ years of experience in PHP/Laravel, Node.js and PostgreSQL, owning delivery from requirements and architecture to deployment and production support. Experienced in code reviews, production debugging, query and server optimization, N+1 resolution and idempotent processing. Applies layered architecture, Domain-Driven Design (DDD) and SOLID to web applications, REST APIs and microservices, with hands-on cloud and Generative AI experience.

Skills

  • AngularJS
  • AWS
  • CI/CD
  • Docker
  • Git
  • JavaScript
  • jQuery
  • Kafka
  • Kubernetes
  • MySQL
  • Node.js
  • PHP
  • PostgreSQL
  • Python
  • Redis
  • Typescript
  • Vue.js
  • JavaScript ES6
  • Angular
  • CodeIgniter
  • Laravel
  • Lumen
  • Phyton
  • SOLID
  • Python/R
  • RESTful APIs
  • CICD
  • Python3
  • FastAPI
  • Paython
  • Nest.js
  • Next.js
  • RAG
  • GitHub Actions
  • Nest js
  • Angular+17
  • REST APIs
  • AI Agents
  • MSQL
  • Domain Driven Design
  • Domain-Driven Design
  • Fast API
  • Type Script
  • kubernetes
  • Typescrtipt
  • Git Action
  • Javascript
  • Angular.js
  • Typescripts
  • Go
  • PostgreQL
  • Pyrhon
  • REST API test
  • TypeScript
  • Vue.js 3
  • Angularjs

Alexmar N

Brasil

Senior Full Stack Developer

$ 3,700 /month

7 yrs exp

Senior Full Stack Developer with 7+ years of experience in PHP/Laravel, Node.js and PostgreSQL, owning delivery from requirements and architecture to deployment and production support. Experienced in code reviews, production debugging, query and server optimization, N+1 resolution and idempotent processing. Applies layered architecture, Domain-Driven Design (DDD) and SOLID to web applications, REST APIs and microservices, with hands-on cloud and Generative AI experience.

Skills

  • AngularJS
  • AWS
  • CI/CD
  • Docker
  • Git
  • JavaScript
  • jQuery
  • Kafka
  • Kubernetes
  • MySQL
  • Node.js
  • PHP
  • PostgreSQL
  • Python
  • Redis
  • Typescript
  • Vue.js
  • JavaScript ES6
  • Angular
  • CodeIgniter
  • Laravel
  • Lumen
  • Phyton
  • SOLID
  • Python/R
  • RESTful APIs
  • CICD
  • Python3
  • FastAPI
  • Paython
  • Nest.js
  • Next.js
  • RAG
  • GitHub Actions
  • Nest js
  • Angular+17
  • REST APIs
  • AI Agents
  • MSQL
  • Domain Driven Design
  • Domain-Driven Design
  • Fast API
  • Type Script
  • kubernetes
  • Typescrtipt
  • Git Action
  • Javascript
  • Angular.js
  • Typescripts
  • Go
  • PostgreQL
  • Pyrhon
  • REST API test
  • TypeScript
  • Vue.js 3
  • Angularjs

Senior Full Stack Developer

Grupo Assessor
February 2024 - September 2026

Served as the sole developer of a platform for municipal governments, owning end-to-end technical delivery—from requirements gathering, API's and architecture to implementation and production deployment. Led technical delivery of a platform used by 45+ municipalities as the primary developer for most of the project;owned requirements, data modeling, architecture, implementation and deployment, and mentored interns. • Developed services with PHP/Laravel/Lumen, Node.js, Nest.Js, Go, Vue.js and PostgreSQL; appliedlayered architecture, DDD principles and SOLID to separate business rules from infrastructure. • Performed code reviews focused on correctness, maintainability, security and performance; reviewed databaseaccess patterns and AI-generated code, and guided refactoring before production releases.• Optimized production queries and servers, resolved N+1 queries and reduced overfetching; Redis cachingreduced database load by approximately 40% and API response times by up to 50%. • Implemented idempotent processing in backend workflows to prevent duplicate operations when requests orbackground tasks were retried, improving reliability in production. • Investigated and resolved production bugs through root cause analysis and Sentry monitoring, contributing toapproximately 25% fewer support tickets. • Built an IEGM AI assistant with RAG, hybrid vector/lexical search, pgvector, document hierarchy, uploads, S3 andOpenRouter, with token and plan limits per municipality. • Deployed and maintained OCI and AWS EC2/S3 infrastructure, using vertical/horizontal scaling and asynchronousqueues; implemented GitHub Actions CI/CD, cutting deployment time from 40 to 8 minutes.

Mid-Level PHP / Full Stack Developer

Clinicarx
June 2021 - December 2023

I worked at Clinicarx, a healthtech company specializing in digital solutions for pharmacies, clinics, and healthcare services, contributing to the development and evolution of systems used at scale. I worked with PHP (Laravel and CakePHP), Angular, Vue.js, Node.js, PostgreSQL, Kafka, and a microservices-based architecture. Developed and maintained a high-transaction-volume healthcare platform using PHP (Laravel, CakePHP, and Lumen), Vue.js, and Angular, including the resolution of high-severity and critical bugs. Built and integrated microservices in PHP, Node.js, and Python (FastAPI), supporting a 3x increase in request volume. Redesigned the reporting system using Laravel microservices, queues, Redis caching, and dedicated database replicas, enabling reports to query the platform’s entire historical dataset, whereas previously reports would fail or become unresponsive for periods longer than one month. Reduced report generation failure rates from 30% to 0% by processing data in batches (chunks) and splitting large queries into smaller operations. Refactored more than 15 reports, migrating raw SQL queries to Eloquent ORM and improving code organization and maintainability. Developed an automated medical report translation solution in collaboration with healthcare professionals to validate accuracy, automating more than 200 translations per day and eliminating support tickets related to the process, which had previously exceeded 200 per day. Integrated HubSpot via REST API to send data and events for lead and user analysis, using independent services for each tag to simplify validation and maintenance. Optimized platform-wide performance through Redis caching, selecting only required fields in queries, resolving N+1 issues, database indexing, and the use of read replicas, reducing average response time from 3 seconds to 800 milliseconds—an improvement of approximately 73%.

Junior Systems Analyst / Full Stack PHP

BS Services - Caixa Econômica Federal
October 2020 - June 2021

Maintained legacy PHP systems and built internal administrative tools integrated with SAP.

Full Stack PHP / Laravel / JavaScript

A2R Soluções em TI
May 2019 - June 2021

Developed and customized SaaS solutions and SAP integrations.

Smart Scores

Communication
82
Role Fit
100
Adaptability
82
Problem-solving
90

Smart Skills

beta