Vladimir Shalimov

Diool is a payment platform for businesses operating in Cameroon. It provides payment services to merchants and service suppliers.

Diool Android应用程序被销售点运营商(收银员)用来收取客户的现金或移动支付. 企业所有者/经理也使用它来进行其他业务操作(发送发票), transferring money, etc).

Features:
• Various payment transactions: regular merchant payments, mobile money recharges, and invoice cash settlements
• User's financial account management, balance top-up/withdraw, and transaction history with export options
• Organization management: points-of-sale and employee configuration
• Contact list to send or request payments
• Payment requests (invoices)
• Approval flows for some types of operations
• Feature customization based on business/user type or pricing plan

My Contributions:
•管理android相关开发——从需求和UI分析到Google Play发行. Starting from an existing project, a complete architectural and UI redesign was eventually done, and numerous features were implemented. 我们已经和团队一起发布了几十个版本，并继续项目的积极开发.

想象一下像摇滚音乐会或音乐节这样的大型活动，有成千上万的游客. 一般来说，里面有多个销售点:咖啡馆、酒吧、纪念品商店等. 每个游客都有一个电子腕带，可以用来在这些点支付, and Billfold is a system to operate such payments.

Billfold软件由后端、web面板和一批Android应用程序组成.

Features:
• Check-in board (used for wristband activation)
•双面商店应用(一面面向销售人员，另一面面向客户)
• Top-up app (used to refill wristband balance)
• Multiple payment types
• Event customization
• Extremely quick service: from seven seconds per customer
• Thousands of orders during a short concert intermission
• Partial offline work
• And more

My Contributions:
我接受了一个现有代码库的项目，并负责整个系统中的Android开发. 我重构了一些模块，以提高稳定性，并解决了一组用户烦恼的问题，还添加了几十个新模块和功能. 然后，我反复审查和重新设计业务需求，以扩展系统功能并简化行为. Later, I also mentored a second Android developer and did code reviews.

A cargo taxi application with excellent, practical service. The Android part contains two applications: the customer and driver apps.

Features:
•订购一辆车，选择货物类型、路线、出发时间和其他高级选项.
• Track ride status.
• Track car geolocation.
• Change the route during the ride (if possible).
• Provide the option to pay by bank card.
• Driver/customer ratings/feedback
• User profile along with a ride history
• Templates for repeated rides
• Driver statistics
• Discount promo codes

My Contributions:
根据客户提供的需求和UI设计，我从零开始开发Android应用程序，并将其开发为可生产的应用程序.

We developed this graphics engine as a library for our client, a forex software development company, to use in their own products.

Engine features:
• Rendering: Forex candles (rates history), the current rate;
• Rendering: trading volumes, indicators, and trader's orders;
•动画滚动，手势，水平缩放和垂直缩放(自动和手动);
• The ability for users to add and edit custom graphic elements (lines, text labels, various chart marks);
•客户端开发人员能够自定义呈现的所有方面:颜色, fonts, size, layout, scale/scroll modes, and custom graphic elements;
• Cross-platform compatibility with the iOS version;
• Nice performance.

My contributions:
I was a technical lead for a team of 3-4 Android developers. I designed engine architecture and organized the teamwork, including task management and assignment, estimates and planning, code review, and result control. I also communicated with the client team directly, which involved requirements analysis and technical consultations. I also wrote the code for the most challenging modules.

用于紧急医疗工作者(护理人员)收集有关现场事故的各种信息的应用程序:地点, patient's claims, injury characteristics, diagnosis results, medical procedures performed, and so on. When workers arrive back at the hospital, 收集到的信息被传输到医院服务器并存储以备将来使用.

Features:
• A massive set of various types of information to collect;
•各种信息类型:从原始字符串和数字到视频和车祸图表;
•医务工作者填写的所有字段都是服务器可配置的，因为不同的医疗部门可能使用完全不同类型的信息;
• Offline mode: in field;
• Online mode: in hospital;
• Skins;
• Reports;
• Driver license barcode scanner;
• Miscellaneous.

My contributions:
I led a team of 3 – 6 developers, 我的挑战是基于之前开发的iOS版本组织快速并行开发. I oversaw the architecture design, task planning, and code reviews, along with teaching and mentoring team members. I also wrote the code for the application core and a few modules.

MaybeCoffee is a startup that launched a dating app. 这款应用的关键理念是找到一个伴侣(类似于其他约会应用)，然后邀请他们一起喝杯咖啡. 开发了两个应用程序:一个用于普通用户，一个用于咖啡店集成系统(销售应用程序).

Features (regular user application):
• User profile, description, photos, and so on
• Partners search: via a list or on a map
• Mini-chats on a map
•与合作伙伴聊天，选择计划一次咖啡会议(选择咖啡店), order, payment) inside the chat
• Order history along with order status tracking
• Loyalty program

Features (salesperson app):
• New coffee shop order notification
• Orders list
• Order status and payment tracking and loyalty program tracking

My Contributions:
我从零开始开发了销售版本的应用程序，并指导了我年轻的同事, who developed the regular user version app from scratch. 我指导他进行架构设计和任务规划，并检查他的代码以确保其高质量.

一个不错的轻量级送花应用程序:各种花店的聚合服务.

Features:
• Shops and goods catalog
• Cart
• Order checkout
• Bank card payment
• Orders and payments history

My Contributions:
I developed the app from scratch based on the UI design provided.

A home finances management app with an excellent UI.

Features:
• Budget tracking: income, expenses, accounts, and transactions
• Various monthly, weekly, biweekly, and annual budgets
• UI animations, draggable panels, and coins with authentic material
• Design concept from before was nearly everywhere
• Colorful daily, weekly, and monthly statistics
• Financial goals

CoinKeeper is a friendly application from 2011-2013. After we finished the first few versions, our client redesigned the application and continued the development of a new, slightly different version.

The classic version was loved by users so, the client had decided to leave it available on the market, and it is still alive!

My Contributions:
I developed the Android version, initially alone and later in a team, and created the business logic layer. Xamarin框架用于在iOS和Android版本之间共享业务逻辑. I also contributed to the back-end development.