I mainly work as a Fullstack Web Developer with professional experiences on Node and React (with Typescript), and C#, going through several others technologies in smaller projects. I'm also always willing to learn something in other areas related to tech, whether Machine Learning, Data Analysis, BI, IA, Testing, Design, UX and UI, or any other; I am always willing to dive into different subjects of this incredible universe.The main values that I look for while developing are organization, clarity, and readability of the code, always aiming at future maintenance. Whenever possible, I dedicate some time to think and have a clear strategy of what I'll develop before actually coding, with great scalability, use cases well defined, and best user impact.The challenges I face on a daily basis are controlling myself not to refactor an entire old code base and not planning too much before coding. The balance of all this is the key to a productive day.
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Software EngineerLessons.ComState Of São Paulo, Brazil
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Javascript EngineerLumenalta (Formerly Clevertech) Nov 2023 - Present• Developed an internal weekly Check-in system to capture user moods, gather feedback, and analyze well-being trends. Features included streaks, streak recovery, leaderboards, insights, accomplishments, and admin/coach reports for data management.• Integrated check-ins with the Slack API for notifications and other reward microservices to grant points for check-ins.• Maintained an internal forum service with categories, sub-categories, questions, permissions, shared resources, and an approval system.• Implemented a scalable and extendable business event system tracking over 30 actions within the application, sending Slack notifications based on actions using AWS SQS. -
Javascript EngineerLumenalta (Formerly Clevertech) Sep 2022 - Nov 2023• Contributed to the development of the microservice backend for a TikTok-like application for News: NOW Local Breaking News Feed.• Assisted in developing the frontend of the NOW CMS web application for managing content, user permissions, categories, newsrooms, rewards, and more.• Implemented a store microservice integrated with a custom rewards points system, converting points into gifts using Saleor and Printful.
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Javascript EngineerLumenalta (Formerly Clevertech) Apr 2022 - Sep 2022• Managed and resolved daily features and bugs for internal operation systems handling HR, projects, clients, positions, payments, developers, leads, and more.• Successfully migrated code from pure JavaScript to TypeScript.• Implemented numerous unit tests for core application functionalities.
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Lead Software EngineerTauria Jul 2021 - Apr 2022• Successfully Designed and Implemented a real-time Messaging Backend microservice, from database to code architecture and layer communication, using DDD and separation of concerns as main approaches, focusing on high scalability and maintainability. Some implemented functionalities: Reactions, comments, replies, attachments, chats, groups, and notifications.• Implemented Unit Tests with an in-memory database approach for services and use cases and Integration Tests with a test database for controllers and complete flows. All tests summed over 90% of the application services.• Led a team with 4 Devs and 2 QAs throughout the Messaging Backend project using Scrum methodology adapted to our team's purpose.• Maintenance of different microservices like Payments, Video Calls, and Authentication. -
Software DeveloperTauria Aug 2020 - Jul 2021• Designed and Implemented a complete and robust Payments microservice that could easily integrate with different payment providers (Stripe, Paypal, Bank Transfers, etc), and was able to create highly customizable Plans with multiple features, addons, packages, and prices, with price calculation based on the static or per usage of each feature. Some other implemented functionalities: Coupons, period discounts, invoices, tags, and different currencies.• Added Unit and Integration tests covering over 90% of services and use cases.• Maintenance of different microservices like Messaging, Video Calls, and Authentication.
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Junior Software DeveloperTauria Apr 2020 - Aug 2020• Implemented a file database to store simple information generated from video conferences.• Maintenance of different microservices of the main product like Messaging, Video Calls, Payments, and Authentication.
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Junior Software DeveloperLakes Environmental Software Oct 2019 - Apr 2020• Successfully migrated an old console application from the early 2000s to a modern mobile app to process data collected from field equipment.• Created automated tests for an existing web application. -
Software Developer InternAjaxti May 2019 - Oct 2019Fortaleza, Ce, Brazil• Maintenance of a web application for Chemtech that controls and maintains crucial operations in the energy segment in Brazil. -
Bi Analyst InternDataprev Oct 2018 - May 2019Fortaleza, Ce, Brazil• Successfully developed a dashboard to monitor services, streamlining and facilitating business decision making.• Praised for using a strategy to include new indicators into the dashboard in an extremely effective way, facilitating future maintenance. -
Software Developer InternInstituto Da Infância - Ifan Apr 2018 - Oct 2018Fortaleza, Ce, Brazil• Monitoring and maintenance of a web application to manage the children and adolescents attended by the institute.• Develop a strategy to migrate local data to cloud services with minimal impact.
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Software Developer InternLandis+Gyr May 2016 - Apr 2017Fortaleza, Ce, Brazil• Maintenance of a web application, with hundreds of thousands of data stored, used by customers to observe their equipment.• Successfully migrated a very large database (data, procedures, and queries) from SQL Server to Oracle.
Helder Costa Education Details
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Computer Science
Frequently Asked Questions about Helder Costa
What company does Helder Costa work for?
Helder Costa works for Lessons.com
What is Helder Costa's role at the current company?
Helder Costa's current role is Software Engineer.
What schools did Helder Costa attend?
Helder Costa attended Federal University Of Ceara.
Who are Helder Costa's colleagues?
Helder Costa's colleagues are Jorge Javier, Ryan Thomas, Pga, Krsnaa Fitch, Azim Kabir, Richard Geiser, Chris Bodall, María Pastor.
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Helder Costa
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