Juliana Ifionu

Experience

• 

  Microverse

  Nov 2021 - Nov 2023

  Technical Support Engineer

  • Reviewed project pull requests to analyse code quality, coherence, and adherence to best practices, fostering students' growth as skilled developers.• Created comprehensive code review standards for JavaScript, React.js/Redux, and Ruby on Rails, and guided part-time code reviewers in a dynamic environment.

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  Telesoft

  Feb 2022 - May 2022

  Ruby on Rails Developer

  • Developed and maintained high-performance and scalable APIs for the server-side logic using Ruby on Rails.• Designed and implemented a highly normalized and efficient database using PostgreSQL and ensured query optimization by ensuring no N+1 query problems, using data indexing and server-side pagination, which greatly improved server speed and performance.• Implemented robust unit testing using RSpec and integrated testing with Capybara.• Collaborated with an agile team and contributed to project development and bug fixes in the front-end and back-end apps, participated in 100% of daily scrums. Show less

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  Lighthouse Labs

  Apr 2022 - Feb 2024

  • Mentored over 200 students in web development bootcamp using the latest technologies of HTML, CSS, JavaScript, Express, Ruby, Rails, PostgreSQL, React, Redux, Bootstrap, Git, and GitHub, resulting in a 97.42% satisfaction rate with a total of 4904 assistance rendered.• Helped individual students and groups work through assignments and homework material via chat, video, and screen share and provided extensive code debugging and personalized code reviews.• Prepared the students for their technical interviews, performed ad hoc breakouts when necessary, and assisted the head instructor in improving the web development curriculum. Show less

  • Monitoring And Evaluation Project Engineer

    Oct 2022 - Feb 2024

  • Full-stack Web Development Mentor

    Apr 2022 - Feb 2024
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  Exasync HQ

  Sept 2022 - now

  Full-stack Developer

  • Led the design and development of a microservice application involving payment gateway systems, collaborated with the product team in defining product vision and gathering requirements, created the project roadmap, and drove the team to successfully deploy the application's inauguration version, a pivotal achievement in the project's release.• Integrated Smart Contract and Blockchain as the payment system using the latest technologies of EtherJs and Web3.• Designed database ERD with Drawio, implemented efficient PostgreSQL database and scalable APIs for real-time data, and background workers for managing user transactions using Ruby on Rails.• Implemented robust API security measures, user authentication, and authorization using Device, Cancancan, JWT, and Auth0.• Introduced unit and integration automation test coverage using Jest and React testing library for the front end and Rspec and Capybara for the server side.• Implemented CI/CD pipeline in pull requests, ensuring reliable and tested code was deployed and providing code reviews to ensure good code quality.• Worked with the React front-end team to integrate the APIs and enhance seamless user interactions and experiences. Show less