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Acácio Antônio Andruczewicz
Verified Expert in Engineering
Twilio Flex Developer
Timbó - Santa Catarina, Brazil
Toptal member since December 5, 2017
Bio
Acácio has over a decade of experience as a full-stack developer. He loves to create high-quality, future-proof web and mobile applications with the best tools and practices to give users a great experience. Acácio has worked in teams of all sizes and enjoys sharing his knowledge with others.
Portfolio
Blacc Spot Media
TypeScript, Node.js, React, Redux, Twilio, NestJS, Twilio Flex, Twilio Sync API...
Senior Sistemas
JUnit, Docker, Webpack, AngularJS, PostgreSQL, Spring, SQL, JPA...
Dynamix Software
Java Natural Language Processing (JNLP), JUnit, JPA, SQL, Java
Experience
- SQL - 14 years
- JavaScript - 14 years
- Node.js - 6 years
- TypeScript - 5 years
- Redux - 4 years
- React - 4 years
- Twilio - 4 years
- Twilio Flex - 3 years
Work Experience
Senior Full-stack Developer
2018 - PRESENT
Blacc Spot Media
- Built a platform that creates SMS and MMS marketing campaigns, tracks the net promoter score, and allows two-way communication with customers.
- Developed, from scratch, a contact center where 300+ agents respond to customer inquiries and initiate conversations through different channels. It leverages intelligent message routing to reduce average resolution time.
- Created custom IVR solutions featuring speech-to-text, text-to-speech, and natural language processing, including integrations with multiple services.
- Built a platform aimed at providing customers with out-of-the-box functionality to manage and operate Twilio Flex contact centers.
- Implemented CI/CD pipelines to quicken release cycles, lower costs, and reduce risks associated with development.
Technologies: TypeScript, Node.js, React, Redux, Twilio, NestJS, Twilio Flex, Twilio Sync API, Twilio API, JavaScript, Objection.js, Knex.js, Jira, Salesforce, HubSpot, Amazon Web Services (AWS), Travis CI
Senior Full-stack Developer
2014 - PRESENT
Senior Sistemas
- Developed and maintained a proprietary framework used by more than 100 developers to build a wide range of web applications.
- Improved the legacy code quality with refactors and clean code principles.
- Shared knowledge through code reviews and presentations while giving feedback to junior developers.
- Converted monolith applications to multiple microservices.
- Built DSLs and code generators to increase overall productivity throughout the organization.
Technologies: JUnit, Docker, Webpack, AngularJS, PostgreSQL, Spring, SQL, JPA, ECMAScript (ES6), Xtend, Java
Senior Software Engineer
2013 - 2013
Dynamix Software
- Developed a new version of a protocol used to interchange billing data between units of the biggest provider of supplementary health in Brazil.
- Cleaned up the codebase by removing duplication and applying design patterns and clean code principles.
- Wrote automated tests to validate legacy code and made it easier to refactor.
Technologies: Java Natural Language Processing (JNLP), JUnit, JPA, SQL, Java
Java Software Engineer
2007 - 2013
Senior Sistemas
- Developed a work schedule management application.
- Created a budget planning application.
- Constructed a business intelligence engine.
- Developed a tool to convert Delphi code into Java.
- Built REST and SOAP APIs.
- Mentored less-experienced developers.
- Built test automation tools.
Technologies: CSS, HTML, JavaScript, JUnit, JPA, SQL, Java
Project History
Ionic 2 Rating
https://github.com/andrucz/ionic2-ratingAn Angular 4 component that renders a star-rating bar; built for Ionic 2 and 3. I created this component while developing the Blook app. It has an average of 4,000 downloads per month.
Blook
A platform where readers can donate, sell, and swap books with people who live near them. I implemented the first back-end with Spring, MongoDB, and Redis and then a new version with Firebase integrated with Elasticsearch. I also implemented the mobile application, using Ionic 3.
Fluency | Senior Sistemas
I developed a workflow platform called Fluency, where users can create BPMN processes, deploy them, make, and respond to requests. I created dashboard pages, made improvements to the engine, and created a JavaScript library to use third-party application pages seamlessly inside the platform.
SDL | Senior Sistemas
I developed a domain-specific language called SDL (service definition language) where developers write service contracts and take advantage of its code generators to scaffold Java, C#, and Delphi projects with those services' boilerplate code.
Cryptocurrencies Arbitrage Tool
As an enthusiast and investor of cryptocurrencies, I created an application to monitor in real-time the possibilities of making profits with arbitrage between different exchanges.
Análise Crítica | Senior Sistemas
I developed an internal tool used by developers and managers to keep track of the root cause of applications bugs, generate reports, and support the decision-making.
Education
2009 - 2012
Bachelor's Degree in Information Systems
UNIASSELVI - Indaial, State of Santa Catarina, Brazil
Certifications
JUNE 2009 - PRESENT
Sun Certified Programmer for Java 5
Sun Microsystems
Skills
Libraries/APIs
Node.js, Twilio API, Objection.js, Twilio Sync API, REST APIs, React, jQuery, RxJS, Java Natural Language Processing (JNLP)
Tools
Knex.js, Git, Travis CI, Jira, GitHub, Webpack
Languages
ECMAScript (ES6), Java, JavaScript, TypeScript, CSS, SQL, Xtend, HTML, Sass
Frameworks
JUnit, NestJS, Bootstrap, Spring Boot, AngularJS, Ionic 2, Ionic, Redux, JPA, Spring, Angular, React Native, Material UI
Paradigms
Object-oriented Design (OOD), REST, Concurrent Programming, Agile
Platforms
Eclipse, Twilio, Firebase, Docker, Amazon Web Services (AWS), Visual Studio Code (VS Code), Oracle, Salesforce, HubSpot
Storage
MySQL, PostgreSQL, MongoDB, Redis, Databases
Other
Twilio Flex, Third-party APIs, APIs, API Integration, Full-stack, Front-end, GitFlow, User Experience (UX)
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