Working on award-winning mobile banking applications that belongs to RBS Group.
Responsibilities include working and maintaining a large codebase, refactor existing features to a MVVP pattern, unit testing critical business logic, code reviews, pair programming.


Senior Android Engineer

Market leading intelligent robo-investment platform offering ISA, Junior ISA, pension products. 
Developing and maintaining a native Android client in a team of 3, using Kotlin programming language.

Responsibilities include working with MVP and Dagger 2 architecture, implementing new features and refactoring code base, working with Gitflow branching model, creating highly reusable and complex custom components, unit, UI and integration testing (JUnit, Mockito, Espresso), code reviews, pair programming and knowledge sharing, daily standups, spring planning and retrospectives sessions


Android Engineer

A social networking platform for students with over 300,000 active users. The platform allows students to communicate via group chats, one to one chats, create collaborative groups and channels, post media files.
Leading an Android team of 3 developers, managing tasks and carrying out interviews with candidates.
Responsibilities include working with RESTful web service APIs (Retrofit, OkHttp), managing release lifecycle, adopting Kotlin programming language, Unit testing (JUnit, Mockito, Espresso), collaborating with a UX/UI  team, maintaining clean codebase, daily stand-up meetings and bi-weekly sprint planning


Developing native Android applications that communicate with 3D scenes created in Unity3D to provide interactive and immersive experiences for mobile and tablets, ensuring clean architecture, optimized memory management  and UI performance.

Responsibilities include create Android native applications according to technical specifications, maintenance and bug fixing, hands-on experience creating web applications using JavaScript, AngularJS, Electron, AWS, MySQL, hands-on experience creating Windows Desktop applications in WPF and C#, familiarity with setting up Jenkins CI server and creating jobs


Android and web developer

Joined an established digital agency working with clients such as Npower, NHS, Land Rover.
Working in agile team of 3 developers. Responsible for creating a Twitter bot to control Arduino-powered device using Android SDK. 
Demonstrated excellent communication and teamwork skills.


Junior Android Developer

6 years of extensive professional experience building Android applications with Java and Kotlin for a wide range of industry sectors. Proficiency in using related technologies and libraries.

Location services, RESTful APIs, dependency injection, networking, threading, responsive UI, Coordinator Layout, Accessibility, Firebase, Room, Jetpack, MVP, MVVM, MVI, Gradle

Extensive experience working with Java on Android.
Oracle Certified Associate, Java 7 SE Programmer

Extensive experience working with Kotlin on Android.

Proficient in creating mobile friendly RESTful backend services that work with databases for data persistence.

Hosting web applications on AWS infrastructure or Heroku.

Proficiency working with Angular framework and TypeScript creating web applications that work well on all screens and sizes.

Progressive web applications that utilise web technologies and the power of service workers to create fast and reliable cross-platform applications.

Git has becoming an indispensable tool in every organisation, I have worked extensively with Git, whether it is through command line or Git clients such as Github Desktop, SourceTree or Android Studio own built-in client.

I practise TDD as I recognise the value of well tested codebase. I spend a lot of time crafting unit tests which give me confidence that my code fulfils business requirements. 

UI testing is an important step in ensuring stability and correct functionality of your application. I write Espresso tests in my job and monitor them through Firebase Test Lab. 

I have used Android Studio IDE since the beta stage. I have witnessed its evolution how better it got over the years. I utilise a lot of its features on a daily basis.

Setting up CI/CD solutions for running tasks and automating repetitive tasks. Experienced working with Jenkins on Android and web projects.

Experience with hosting web applications, Remote Config, Test Lab, Analytics

Senior Mobile Engineer | Android | Web Technologies | Best practices

Adrian Lesniak

Analog Tachometer

Simple, user-friendly and modern-looking unit converter which support 7 most common measurement units to choose from.:
- Temperature
- Weight
- Length
- Area
- Volume
- Speed
- Time

Basic Unit Converter

Stay informed on the latest news from gaming industry.
The app lets you sort the news by the best gaming news providers in the industry so you can stay up to date with their latest news posts.

Gamer News

This app aims to introduce developers to load indicators that are available to use with Load Indicators library. The library is now available at https://github.com/adrian110288/LoadIndicators

Load Indicators

Stopwatch app that lets you save and manage your records.

Stopwatch

A simple, hustle free note taking extension for Google Chrome


RapidNote

Custom AngularJS component showing a gallery of images.

Image Gallery

Educational application for students of Thai language. Work in progress.

Personal details

Adrian L.

Summary

Technical skills

Work Experience

Personal Projects