Application for automating employees time tracking | Portfolio JazzTeam

Application for automating employees time tracking

  • Duration: 2 years
  • Services: Product Development, Backend Development, Custom Software Development, Frontend Development, Manual Testing Services, Project Management, CI/CD Implementation & Modernization. DevOps Services, Early-Stage Innovation, R&D Services, Software Integration Services
  • Technologies: CI/CD Automation Servers, Spring MockMVC, Jenkins, Hibernate Validator, Hibernate, phpMyAdmin, Enterprise Architect, Data Bases, Bootstrap (Twitter Bootstrap), HTML5, AJAX, Project Management, Collaboration and Bug Tracking, REST, Jira, Freemarker, Swagger, MySQL, Java, Spring Boot, CSS, Frontend, Material Icons, Build and Dependency Platforms and Tools, Backend, JavaScript, jqGrid, JavaScript Frameworks, Spring MVC, Spring, Various Editors, Spring Security, CSS Frameworks, Development Infrastructure and Tools, Template Engines, Postman, Spring Transaction Management, Nexus, Standards and Protocols, jQuery, Web Frameworks, Utils and Tools, CI/CD and DevOps, Languages, Protocols, APIs, Network Tools, Network Tools, Software Engineering and Management Tools, ORM & Persistence, H2 DB, Java Libraries, Apache Commons, Lombok
  • Business Domains: IT Industry
  • Software Categories and Types: Workflow Management & Business Process Automation, ERP/CRM Systems, Document Management Systems (DMS)
  • IT Architecture Paradigms and Approaches: Test Driven Development (TDD), Data Driven Testing (DDT), Enterprise Integration Patterns, Model Driven Development (MDD), Object-Oriented Programming (OOP)
  • Technical Expertise: Java Server Side Development, Web Development, Research and Development (R&D), Databases, Cloud Enablement, Migration, Implementation, Expandable Software Solutions (Plugin Systems), Atlassian Products & Solutions (Jira, Confluence, etc.)
  • DevOps Expertise: Advanced build organization, CI/CD Basics, CI/CD Advanced, Docker
  • Team size (13):
  • 1 Project Manager
  • 3 QA Manual
  • 2 QA Automation
  • 2 Frontend
  • 4 Backend
  • 1 Business Analyst

Project description

JazzTeam Time Reporting is part of the company’s corporate platform aimed at automating the company’s business processes. This system was developed for the purpose of automating the accounting of employees’ working time. It made it possible to transfer the accounting of non-working time of employees to the web interface, as well as automatically generate reports on the wages of employees based on reports of hours worked, thereby reducing the labor costs of the company’s administration.

The employees time tracking system provides:
  • keeping records of non-working time of employees (holidays, sick leaves, sick days, etc.);
  • aggregation of employees’ working time data from the internal task management system (Jira) and external sources, as well as the mandatory validation of this data to generate a payroll report;
  • monitoring the timely filing of hours worked and the formation of error reports;
  • notification of all interested parties about the errors identified in the reports;
  • maintaining a centralized record of information on employees and their project workload;
  • the ability to quickly view and cancel changes to the most important data in the system (changing the workload of an employee on a project, transferring an employee to another project, etc.).

Technological features of the project

The developed system consists of several components, the main of which are:

  • the synchronizer — runs in Jenkins and exports work time data for each employee from predefined sources to a single database;
  • the validator — runs in Jenkins on a daily basis. It generates the time that needs to be worked by employees each day and compares it with the data received from the synchronizer. As a result, a report is generated that indicates the detected errors;
  • the web interface — a component responsible for user interaction with the system;
  • the back-end — a component responsible for processing requests from the web interface.

The back-end component consists of several parts:

  • the JWT filter — validates requests, sends approved ones further for processing to the controller;
  • the controller — performs the function of dividing tasks between services;
  • a service — a layer whose main function is to validate requests from the controller based on a specific business logic and to perform a particular business task;
  • the repository — a layer that interacts with the database.

Application components diagramApplication components diagram

Technologies used

Programming languages: Java SE 8, JavaScript.
Frameworks, libraries: jQuery, Bootstrap 4, Material Icons, Hibernate, Spring Boot, Spring Security, Spring MockMVC, AJAX, Swagger, Apache Commons, Lombok, FreeMarker, Cypress, Playwright.
Infrastructure: Jenkins + security plugins, Postman, Nexus, Jira.
Databases: MySql8, H2.

Project features

  1. The interaction between the database and the code is carried out through the DAO layer, which allows you to work flexibly with the system and makes its various components independent of each other. To connect these components into a single system, we used Nexus.
  2. The presence of versioning in the system allows you to keep a history of all processes and events, i.e. work not only with the current state of the object, but also with its previous versions. The system also allows you to enter and track events planned for the future.
  3. When developing the application, much attention was paid to data security issues, which was ensured primarily by a very clear delineation of rights and roles in the system and by strict rules for their setting up.
  4. The project uses the concept of metafields, which is to provide a common mechanism for adding entity attributes and controlling access to them without the need to rebuild the application.
  5. The following types of testing were carried out on the project: functional, regression, modular, security testing. At the same time, the DDT approach was widely used, and 80% of the code was covered by Unit tests.
  6. To significantly speed up testing and deployment of the application while iteratively developing its functionality, special emphasis was placed on CI/CD processes. This required ensuring maximum synchronization of developers with users of the system and setting up parallel work of the entire project team with several environments (for development, testing and release) through Spring Security.

Project results

  • The work of the company’s administration employees has been fully automated in a number of areas, including the process of their interaction with project managers.
  • After the transition to the developed system, the overall labor costs of the company’s administration decreased and the loss of time spent on collecting and exchanging all data between project managers and the accounting department was eliminated.
  • A centralized storage and an electronic file cabinet of various types of data used by the company’s administration employees as part of their work have been created. Now all up-to-date information about employees, their managers and projects can be obtained in one place and independently.

Company’s achievements on the project

  • The company has developed another proprietary product that can be supplied to third parties on a commercial basis. The developed application is easily scalable and can be adapted to local customer requirements in a short time.
  • The process of resource provision of projects (formation of project teams) has significantly accelerated.


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