Michael Pontus, Developer in Porto, Portugal
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Michael Pontus

Verified Expert  in Engineering

Software Developer

Porto, Portugal
Toptal Member Since
December 5, 2018

Michael is a full-stack web developer and an expert with front-end technologies, particularly React. He is a certified AWS Solutions Architect with industry experience in cloud development and release engineering. Michael has published tutorials as an SME, contributed to open source, and built an app for fleet management in the aviation industry. He is passionate about modular architectures and enjoys performing hybrid work between code and infrastructure to bring designs to life.


AWS Cloud Architecture, AWS Lambda, Amazon DynamoDB, Shopify API, TypeScript...
K-f Dev AG
React, Gatsby, TypeScript, Styled-components, NixOS, Web Development
React, TypeScript, Gatsby, Contentful, Styled-components, Google Maps API...




Preferred Environment

Git, Visual Studio Code (VS Code), MacOS, Linux

The most amazing...

...tool I've created is a language-learning app built with RxJava, Android architecture components, and Google Cloud services.

Work Experience

Back-end Developer

2020 - PRESENT
  • Developed a platform to connect Shopify with vendors' inventories and fulfillment providers.
  • Implemented serverless architecture using AWS services: S3, Lambda, DynamoDB, and SNS/SQS.
  • Developed a modular architecture for vendor integrations using AWS Cloud Development Kit (CDK).
  • Improved observability using AWS X-Ray, CloudWatch Dashboards, and CloudWatch Logs Insights.
  • Created infrastructure to test vendor integrations by using AWS SDK, CucumberJS, and API mocks.
Technologies: AWS Cloud Architecture, AWS Lambda, Amazon DynamoDB, Shopify API, TypeScript, Node.js, AWS Cloud Development Kit (CDK)

Gatsby and Jekyll Static Site Developer

2021 - 2022
K-f Dev AG
  • Created multiple static websites using Gatsby, React, and TypeScript, ensuring a performant user experience and code maintainability.
  • Implemented continuous integration and deployment pipelines with GitHub Actions and Netlify, streamlining the development process.
  • Enabled automated preview deployments using IPFS and Pinata, integrating decentralized technologies into the workflow.
  • Contributed to the build process of Centrifuge Chain by introducing Nix flakes, ensuring deterministic and reproducible builds for Rust packages.
Technologies: React, Gatsby, TypeScript, Styled-components, NixOS, Web Development

React Developer

2020 - 2020
  • Transformed a website from WordPress into GatsbyJS using Contentful as headless CMS.
  • Built a component library using React and Storybook with styled-components and styled system.
  • Created a workflow in GitHub Actions to run visual regression tests using BackstopJS.
Technologies: React, TypeScript, Gatsby, Contentful, Styled-components, Google Maps API, GitHub Actions

React and TypeScript Front-end Engineer

2019 - 2020
  • Built an application for fleet and personnel management in the aviation industry.
  • Developed a front end with a modular dashboard interface using React, TypeScript, and Jest.
  • Contributed to the back end using Ruby on Rails, ActiveRecord, dry-monads, and RSpec.
Technologies: React, TypeScript, Jest, Ruby on Rails (RoR), ActiveRecord, Dry-rb, RSpec, Full-stack, Web App Development, Full-stack Development

Back-end and Front-end Developer

2019 - 2019
Wendero GmbH
  • Developed a lead management application for a manufacturing company focused on lead data collection and synchronization with Salesforce.
  • Implemented user authentication and file upload for authorized distributors with local storage and file parsing capabilities.
  • Prioritized maintainable code with TypeScript and comprehensive Jest unit tests.
Technologies: JavaScript, Salesforce API, Preact, TypeScript, PostgreSQL, PostgREST, React, Node.js, CSS, HTML, Docker

Front-end Developer

2018 - 2019
  • Developed user-facing functionality for a Belgium-based fashion store.
  • Conceptualized component library based on the design reference.
  • Ensured operational safety though static analysis, runtime type checking, and E2E tests.
Technologies: Cypress, Styled-components, GraphQL, RxJS, Redux, React, TypeScript

Full-stack Developer

2018 - 2018
  • Developed map-based mobile application and invite-based CRM system using React Native and Firebase.
  • Established CI/CD pipeline for a monorepo using CircleCI, Lerna, and Firebase CLI.
  • Implemented strategies for automated testing for Firebase security rules and cloud functions.
  • Optimized spatial data retrieval using a custom algorithm for a discrete number of regions.
Technologies: Firebase, React Native, RxJS, Redux, React


A React library that provides a hook to create modal windows. The hook is responsible for state management and rendering of the modal, making it more convenient to create modals from other components. Complete test coverage is completed with Jest and react-testing-library.


k/factory is a software studio that builds and supports a financial ecosystem on the Centrifuge protocol, an open-source platform for decentralized finance. It provides core infrastructure and works with users to ensure adoption.

AWS Certified Security - Specialty

Amazon Web Services

JULY 2020 - JULY 2023

AWS Solutions Architect Associate

AWS Certified Solutions Architect - Associate


Android Developer Nanodegree



React, Node.js, RxJS, Redux-Saga, Shopify API, Google Maps API, RxJava, ActiveRecord, Salesforce API, Preact, PostgREST


AWS Cloud Development Kit (CDK), Amazon Simple Queue Service (SQS), Amazon CloudWatch, AWS SDK, Git, Amazon Simple Notification Service (Amazon SNS), AWS CloudFormation, AWS IAM, AWS Key Management Service (KMS), RSpec


Redux, Jest, Ruby on Rails (RoR), Cypress, NestJS, Express.js, Symfony, Django, Kohana, Knockout (Knockout.js), React Native, Cycle.js, Dagger 2, Next.js


TypeScript, JavaScript, GraphQL, PHP, Ruby, SQL, CSS, HTML, CSS3, HTML5, Java


Linux, Docker, AWS Lambda, Firebase, Amazon Web Services (AWS), Contentful, MacOS, Visual Studio Code (VS Code), WordPress, Drupal, OpenCart, Android


PostgreSQL, MongoDB, Amazon DynamoDB, Amazon S3 (AWS S3), MySQL


Reactive Programming, Functional Programming, Object-oriented Programming (OOP), Test-driven Development (TDD)


Styled-components, AWS Cloud Architecture, Gatsby, GitHub Actions, Amazon API Gateway, Dry-rb, NixOS, Full-stack, Web Development, Web App Development, Full-stack Development

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