Geziel Elyon

Software Engineer

Recife, Pernambuco, Brazil4 yrs 7 mos experience
AI EnabledAI ML Practitioner

Key Highlights

  • Over 5 years of experience in software engineering.
  • Expert in developing scalable web applications and APIs.
  • Strong background in fintech and payment solutions.
Stackforce AI infers this person is a Fintech Fullstack Developer with expertise in scalable web applications.

Contact

LinkedIn

Skills

Core Skills

ReactNode

Other Skills

NextViteExpressNestTypescriptJavascriptHTMLCSSMaterial UISvelteTailwind CSSGolangPythonFastifyAdonis

About

Brazilian software engineer with more than 5 years of professional experience and a background in planning, architecting, developing, scaling, securing, and maintaining large-scale web applications, microservices, and APIs in critical environments, serving millions of users daily, for the financial, banking, payment, e-commerce,education, security, health and wellbeing sectors. Technologies: - React | Next | Svelte | Vite | Gatsby | HTML | CSS | Tailwind CSS | Material UI | Chakra UI | Shadcn UI | Radix | Stitches | Bootstrap | Styled Components | Sass | Css Modules - Javascript | Typescript | Node | Nest | Express | Adonis | ApolloGraphQL | Golang | Python - SQL | NoSQL | PostgreSQL | MongoDB | MySQL | SQLite | OracleDB | Firebase - AWS (Amazon Web Services) | GCP | Azure | Vercel | Render - Clean Code | Clean Architecture | Design Patterns | SOLID - Application Tests (Unitary | Integration | E2E | Contract) - Microservices | Monolithic Application | Serverless - Apache Kafka | RabbitMQ | Redis - Elasticsearch | Logstash | Kibana - Jest | Vitest | Cypress | Testing Library | K6 - Docker | K8s (Kubernetes) | Terraform | Datadog - Git | Github | Gitlab | CI | CD | Github Actions - Rest API | GraphQL | Web Socket I consider myself passionate about solving problems and helping people. I love technology and all the possibilities it offers. If there’s a problem, there’s a way to solve it with technology. My main focus is delivering and adding value to the company and team that I'm working on with all my experiences. I take pride in my adaptability, which allows me to seamlessly transition into new technologies and teams. I am constantly seeking out new challenges. By leveraging my problem-solving skills and my ability to work collaboratively, I am confident in my ability to excel in any environment, while delivering excellent results. #latam #brazil #remote #frontend #backend #fullstack #developer #react #node #javascript #typescript

Experience

Wellhub

Software Engineer

Aug 2025 – Present · 7 mos · Brazil · Remote

  • Context:
  • Wellhub is a global corporate wellness platform, present in 12 countries, connecting employees to gyms, therapy, nutrition, mindfulness, and sleep through a single subscription. I joined the Billing Platform team, responsible for the billing experience that serves the entire business, processing millions of transactions for users and companies worldwide. Our focus is to deliver efficient checkout and account management solutions, ensuring optimized conversion and scalability to support global growth.
  • Achievements:
  • I was responsible for implementing a new unified purchasing flow so that the main user and their family members comply with the company's new guidelines (All must use the same payment method as default and use the same backup).
  • I worked at BR Tax Reform initiative with the goal of collect new personal information from users required by the new Brazilian payment law reform.
  • I was responsible for analyzing and reducing the use of unnecessary infrastructure resources.
  • Activities:
  • Develop and maintain solutions focused on payments, billing, and the checkout experience.
  • Work with cross-functional teams and payment providers to improve global conversion and efficiency in billing flows.
  • Research and execute strategic projects that impact B2B and B2C, including the creation of new payment mechanisms.
  • Solve challenges related to scalability, systems architecture, and code quality.
  • Implement prototypes and experiments using practices such as MVP, A/B testing, and feature toggles for controlled rollout.
  • Ensure quality through automated testing and best engineering practices.
  • Technologies:
  • React | Next | Vite | Node | Express | Nest | Typescript | Javascript | HTML | CSS | Material UI
  • RESTful APIs | HTTP Best Practices | Automated Testing (unit, integration, behavioral)
  • Monitoring | Observability | Scalability | Code Quality Assurance
  • Clean Code | Clean Architecture | Design Patterns | SOLID
  • MVP | A/B Testing | Feature Toggles
ReactNextViteNodeExpressNest+5

Stone

Software Engineer

Jan 2024 – Aug 2025 · 1 yr 7 mos · Rio de Janeiro, Brazil · Remote

  • Context:
  • Stone is one of the biggest payments and finance companies in Brazil and Latin America. It offers payments and banking services to other big companies, so there are millions of users using its systems every day. I'm part of the platform and experience team.
  • Achievements:
  • I created security automations systems to validate and protect the company's intellectual property such as Codes, Assets and importante services.
  • I created new products for engineering teams including applications to facilitate the analyzing, granting, revoking and auditing the access to company assets.
  • I did code refactoring and performance improvements in several legacy applications using good practices such as Clean Code, Clean Architecture, Design Patterns and SOLID.
  • Activities:
  • Plan, architecture, develop and maintain new products and services
  • Test and improve the applications performance
  • Rewrite legacy and new codes following standards and best practices
  • Create automations and alerts to protect the company's intellectual property
  • Create security applications to facilitate the analyzing, granting, revoking access to company assets
  • Technologies:
  • React | Next | Svelte | Vite | Gatsby | HTML | CSS | Tailwind CSS | Material UI | Chakra UI | Shadcn UI | Radix | Stitches | Bootstrap | Styled Components | Sass | Css Modules
  • Javascript | Typescript | Node | Nest | Express | Adonis | ApolloGraphQL | Golang | Python
  • SQL | NoSQL | PostgreSQL | MongoDB | MySQL | SQLite | OracleDB | Firebase
  • AWS (Amazon Web Services) | GCP | Azure | Vercel | Render
  • Clean Code | Clean Architecture | Design Patterns | SOLID
  • Application Tests (Unitary | Integration | E2E | Contract)
  • Microservices | Monolithic Application | Serverless
  • Apache Kafka | RabbitMQ | Redis
  • Elasticsearch | Logstash | Kibana
  • Jest | Vitest | Cypress | Testing Library | K6
  • Docker | K8s (Kubernetes) | Terraform | Datadog
  • Git | Github | Gitlab | CI | CD | Github Actions
  • Rest API | GraphQL | Web Socket
ReactNextSvelteViteHTMLCSS+9

Pagar.me

Software Engineer

Sep 2022 – Dec 2023 · 1 yr 3 mos · Rio de Janeiro, Brazil · Remote

  • Context:
  • Pagar.me is one of the biggest payments and finance companies in Brazil. I was responsible for all the entire reading layer, for making performance improvements, code refactoring and attacking technical debts in several applications and services, working horizontally with all the company's teams.
  • Achievements:
  • I created a new reading layer model based on an event architecture using queue technologies that increased the performance by 30%, reduced operational cost and brought more reliability and consistency in storage data.
  • I created important payments solutions that brought more clients and money to the company such as payment split, finance reports and dashboards, transfer security validations and authorization services.
  • I did code refactoring and performance improvements in several legacy applications using good practices such as Clean Code, Clean Architecture, Design Patterns and SOLID.
  • Activities:
  • Plan, architecture, develop and maintain new products and services
  • Test and improve the applications performance
  • Rewrite legacy and new codes following standards and best practices
  • Scaled important services to support the increase in customers using them during peak periods
  • Technologies:
  • React | Next | Svelte | Vite | Gatsby | HTML | CSS | Tailwind CSS | Material UI | Chakra UI | Shadcn UI | Radix | Styled Components | Sass
  • Javascript | Typescript | Node | Nest | Express | Adonis | ApolloGraphQL | Golang | Python
  • SQL | NoSQL | PostgreSQL | MongoDB | MySQL | SQLite | Firebase
  • AWS (Amazon Web Services) | Vercel | Render
  • Clean Code | Clean Architecture | Design Patterns | SOLID
  • Application Tests (Unitary | Integration | E2E | Contract)
  • Microservices | Monolithic Application | Serverless
  • Apache Kafka | RabbitMQ | Redis
  • Elasticsearch | Logstash | Kibana
  • Jest | Vitest | Cypress | Testing Library | K6
  • Docker | K8s (Kubernetes) | Terraform | Datadog
  • Git | Github | CI | CD | Github Actions
  • Rest API | GraphQL | Web Socket
ReactNextSvelteViteHTMLCSS+8

Mais retorno

2 roles

Fullstack Developer

Promoted

Jan 2022 – Aug 2022 · 7 mos · São Paulo, Brazil · Remote

  • Context:
  • Mais Retorno is a financial market and education company. It offers many tools for investors. I was responsible for planning, developing and improving new tools and products for the financial market, for fixing bugs and for helping my coworkers.
  • Achievements:
  • I built new and complex tools for the financial market that brought more clients and money to the company such as the assets and funds comparator, income simulator, fund tracker, fund and stock sheets, government bonds and direct treasury.
  • I created a complete recurring subscription system so that members can have access to private financial tools, exclusive benefits and the company has a recurring monthly income.
  • I did performance, SEO, accessibility, design and code refactoring in several web applications and services using good practices such as Clean Code, Clean Architecture, Design Patterns and SOLID.
  • Activities:
  • Plan, architecture, develop and maintain new products and services for the finance market
  • Test and improve the applications performance
  • Rewrite legacy and new codes following standards and best practices
  • Make performance, SEO and accessibility improvements in web applications
  • Technologies:
  • React | Next | Svelte | Vite | Gatsby | HTML | CSS | Tailwind CSS | Material UI | Chakra UI | Shadcn UI | Radix | Bootstrap | Styled Components | Sass | Css Modules
  • Javascript | Typescript | Node | Nest | Express | Adonis | ApolloGraphQL
  • SQL | NoSQL | PostgreSQL | MongoDB | MySQL | SQLite | Firebase
  • AWS (Amazon Web Services) | Vercel | Render
  • Clean Code | Clean Architecture | Design Patterns | SOLID
  • Application Tests (Unitary | Integration | E2E | Contract)
  • Microservices | Monolithic Application | Serverless
  • Apache Kafka | RabbitMQ | Redis
  • Elasticsearch | Logstash | Kibana
  • Jest | Vitest | Cypress | Testing Library | K6
  • Docker | K8s (Kubernetes) | Terraform | Datadog
  • Git | Github | Gitlab | CI | CD | Github Actions
  • Rest API | GraphQL | Web Socket
  • Keycloak
ReactNextSvelteViteHTMLCSS+6

Frontend Developer

Jun 2021 – Jan 2022 · 7 mos · São Paulo, Brazil · Remote

  • Context:
  • I was responsible for create new landing pages, develop new features, fix bugs, build new tools and for make SEO improvements in all platform.
  • Achievements:
  • I built a lot of features, pages and tools.
  • I helped to investigate and fix some bugs.
  • I made several SEO improvements in the company's main web application.
  • Activities:
  • Plan and develop new tools, pages and products
  • Make SEO improvements in web pages
  • Investigate and fix some bugs
  • Make code reviews
  • Technologies:
  • React / Next / HTML / CSS / Material UI
  • Javascript / Typescript
  • Clean code / SOLID
  • Git / Gitlab
  • Cypress
ReactNextHTMLCSSJavascriptTypescript

Education

Rocketseat

Professionalizing school — Information Technology

Jan 2020 – Jan 2025

Descomplica Faculdade Digital

Bachelor degree — Computer Science

Jul 2024 – Jul 2028

UNIFG

Bachelor of Computer Science — Information Technology

Jun 2021 – Aug 2024

JStack

Profissionalizante school — Information Technology

Jan 2020 – Jan 2025

Alura

Course — Information Technology

Jan 2019 – Jan 2022

ui Start

Course — Design

Jan 2022 – Jun 2022

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