Rodrigo Varela, Software Developer in Sydney, New South Wales, Australia
Rodrigo Varela

Software Developer in Sydney, New South Wales, Australia

Member since June 5, 2015
Rodrigo is a software engineer, specializing in Android, Kotlin, Java, PHP, APIs, Bash, and databases. With over a decade of experience, he has led many teams, managed entire full-stack development projects, and excelled as a collaborative individual contributor. Rodrigo is a focused, organized, and productive developer, backed by a computer science degree from Buenos Aires University.
Rodrigo is now available for hire




Sydney, New South Wales, Australia



Preferred Environment

Trello, Slack, GitHub, MacOS

The most amazing... I developed is the official companion Android app for Moment mobile lenses. It ranked top-five in the camera app category on Google Play for three years.


  • Firebase Engineer

    2021 - PRESENT
    NSExtensions (via Toptal)
    • Built a cloud-based, serverless solution, from scratch, based on Google Cloud Run and Firebase functions as the main architecture for the shipping solution the company is building.
    • Developed a React PWA app to consume the services provided by the architecture mentioned above. Deployed in production for their main corporate client.
    • Set up environments to handle corporate clients and a mass consumption app that will be released soon.
    • Developed a simple back office for data analysis based on React-admin.
    Technologies: React, Node.js, Progressive Web Applications (PWA), PWA, Firebase, Firebase Hosting, Bash, TypeScript, JavaScript, HTML, CSS
  • Principal Software Engineer

    2020 - 2020
    • Worked on Android projects for one of Australia's leading health insurance providers.
    • Integrated with a company team to help the main developer transition to another project and helped build a new team.
    • Tackled main screen tech-debt refactoring, app stabilization (from an approximate 94% crash-free session rate to over 99.6%), biometrics login, PDF claiming, and digital payments (Braintree integration and NFC EFTPOS device communications).
    Technologies: Java, Kotlin, Android
  • Android Lead Engineer

    2018 - 2020
    • Built the Moment Android photography app to make the most out of Moment's adaptable lenses. I built the base level from scratch as the sole developer.
    • Forged a team of remote developers across the globe, collaborating remotely on the product features. At the peak time, we were four developers across three time zones.
    • Developed live image processing features, such as histogram, waveform, video bitrate setup, anamorphic de-squeezing, focus peaking, highlight clipping, shadow clipping, FPS, bitrate, and resolution configs based on device capabilities.
    Technologies: OpenGL, RenderScript, Java, Android, Kotlin
  • Senior Android Developer

    2017 - 2018
    • Implemented Firebase as the main tracking tool for crashes, allowing us to gather production information to fix complex, device-specific bugs.
    • Maintained the application while developing the architecture for the app redesign and helped the company set up a team.
    • Managed and implemented a security code compliance project on the underlying technology for VISA mobile payments.
    Technologies: Android, Java, Kotlin, Firebase
  • Android Developer

    2015 - 2016
    Love Agency
    • Contributed to the development, codebase maintenance, and improvements for Australia's number one Android betting app—the agency's most important client.
    • Developed an Android smartwatch and companion app, from scratch, for fall and seizure detection.
    • Oversaw a quality assurance process, thereby increasing code coverage from 0% to 50%.
    Technologies: Android Wear, API Design, Android, Java
  • Android Head Developer

    2014 - 2015
    • Extracted newspaper information from the app and moved it into a back-end API service.
    • Converted the app layout function from static to dynamic in order to resize layouts automatically when adding, removing, and updating newspaper content.
    • Developed features such as content sharing, newspaper sortings per category based on users, and back-end selections.
    • Set up and configured GitHub for code management and designed policies for the developers to come.
    Technologies: JavaScript, Android, PHP, Java
  • Senior Software Engineer

    2013 - 2015
    • Connected SIGRES, a ship residual and waste management system, to an Oracle database, using Hibernate, before going live on Argentina's national maritime ports.
    • Configured dependency injection, using Spring, and introduced the first tests to the project. Established a TDD process, enabling developers to continue improving on this.
    • Implemented an AFIP system integration for the Argentine Taxation Office, enabling login in with special privileges.
    Technologies: Apache Struts, Oracle, Hibernate, Spring, Apache Struts 2, Java
  • Support Manager

    2013 - 2014
    FDV Solutions
    • Assisted with building a support area to handle all the projects related to legacy support and establish best practices to tackle them.
    • Built an internal team of developers willing to tackle this.
    • Documented processes for onboarding, conflict resolution, project documentation, and Agile project tracking.
    Technologies: Agile, Gantt Charts, Project Management
  • Project Leader

    2012 - 2013
    FDV Solutions
    • Implemented Scrum processes, incorporating the client into team meetings and discussions, which resulted in a very successful engagement.
    • Incorporated showcases for clients as a way to demonstrate completed work prior to conducting retrospectives.
    • Unified the project information in Jira as a single point of failure (SPOF) for the project.
    Technologies: Jira, Project Management, Scrum
  • Senior Java Developer

    2011 - 2012
    FDV Solutions
    • Created a graph to visualize time of day and drinks inputs for ENDWI, an alcohol consumption tracking app endorsed by the Texas government in the United States.
    • Developed a Play Framework web back-end application for GSM geolocation used by Colombian post nets.
    • Tracked and fixed bugs, using Jira as a reporting tool.
    Technologies: Web, Oracle, Hibernate, Play, Java
  • Technical Leader

    2010 - 2011
    Odea srl.
    • Helped organize a remote team for YPF, a petrol company and Odea's main client, covering the main product for gas and petrol delivery tracking.
    • Played a key role in the analysis, design, and development of the GasTracker system to identify the origins of gas for sale. Provided infrastructure consulting and configuration management.
    • Conducted pulse meetings to manage projects related to maintenance, upgrades, and architectural improvements.
    Technologies: JSF, Oracle, Java
  • Developer Analyst

    2009 - 2010
    • Accomplished a long-overdue points migration (v2 to v3) over the MercadoPago (LATAM payments solution) platform, using PL/SQL scripts running at night, monitoring results every morning, and tweaking the process as needed.
    • Implemented a search algorithm based on query matches against a category tree, using a weight-algorithm solution for the MercadoClics platform.
    • Assisted with the company's transition from Waterfall to Agile project management methodologies.
    Technologies: SQL, Oracle, Oracle PL/SQL, Java
  • Developer Analyst

    2008 - 2009
    • Managed web-based projects, end-to-end, communicating directly with clients.
    • Developed an open-source PHP component for a CakePHP framework to add language translations to websites easily (managed from the back end).
    • Advanced rapidly to working on PHP production projects for clients after starting with zero PHP experience.
    Technologies: CSS, JavaScript, HTML, Java, CakePHP, PHP
  • Java Developer

    2007 - 2008
    • Conducted unit tests to improve coverage of the front-end web system while working as a trainee through my university internship program.
    • Joined the back-end team and developed tree structure-based solutions for complex performance problems.
    • Used the same tree-based solution for generating reports in CSV format.
    Technologies: Java


  • DSLR Professional Camera App for Android

    I joined Moment to create the Android version of the existing iOS app from scratch. Later, I helped them build a team of remote developers to implement an exciting and complex roadmap of top-tech image processing features to take the app to the top of the charts.

    Main achievements:
    • Designed and built a fully Android native Camera2 API Kotlin app, from scratch, with core camera and video functionalities such as flash modes, timers, ISO and shutter speed, white balance, and focus.
    • Built a team of remote developers across the globe to tackle real-time image processing.
    • Incorporated complex features like histograms, photographer analytics, and focus peaking, using low-level RenderScript and OpenGL code embedded in the app.

  • Web App MVP to Reverse Engineer

    I was approached by an architect in Sydney who needed a way to automate real estate property investments based on government information that seemed inaccessible.

    I reverse engineered the state government site to extract the information the architect needed and developed a small Django Python web app to automate the reports as an MVP. This was a short freelance engagement that gave her what she needed for her business.


  • Languages

    Java, Kotlin, PHP, XML, Bash, HTML, TypeScript, JavaScript, SQL, C++, Python, CSS, Swift, Python 3, C#
  • Frameworks

    Spring, Hibernate, CakePHP 2, Spring Boot, Android SDK, RenderScript, Apache Struts 2, Play, JSF, Django, CakePHP, Apache Struts, Django REST Framework, Flutter
  • Tools

    Git, User Story Mapping, Android Studio, Subversion (SVN), Jenkins, CircleCI, Apache, GitHub, Slack, Trello, Jira
  • Paradigms

    Agile, REST, Web Architecture, Back-end Architecture, Continuous Integration (CI), Mobile Development, Database Design, Microservices, Scrum
  • Platforms

    Android, Firebase, Linux, Buildkite, MacOS, Drupal, Oracle, Web, iOS, Django CMS, Amazon Web Services (AWS), Docker
  • Storage

    MySQL, JSON, PostgreSQL, Oracle PL/SQL, Microsoft SQL Server
  • Other

    Project Analysis, Languages & Storage, Code Architecture, Architecture, Mobile App Architecture, APIs, Software Release Management, Release Management, Data Architecture, Requirements, Google Play Store, Mobile App Development, Project Tracking, Scripting Languages, Scaling, Mobile Apps, HTTP, TCP/IP, UDP, QA Testing, QA Automation, Full-stack, Firebase Cloud Functions, Progressive Web Applications (PWA), Software, API Design, Android Wear, Gantt Charts, Reverse Engineering, BrainTree, AWS, PWA, Firebase Hosting
  • Libraries/APIs

    React, Node.js, OpenGL, Camera2 API, Django ORM, Stripe
  • Industry Expertise

    Security, Project Management


  • Bachelor's Degree in Computer Science
    2003 - 2012
    University of Buenos Aires - Buenos Aires, Argentina

To view more profiles

Join Toptal
Share it with others