27+ Tomcat Jobs in India

Roles & Responsibilities:

• Bachelor’s degree in Computer Science, Information Technology or a related field

• Experience in designing and maintaining high volume and scalable micro-services architecture on cloud infrastructure

• Knowledge in Linux/Unix Administration and Python/Shell Scripting

• Experience working with cloud platforms like AWS (EC2, ELB, S3, Auto-scaling, VPC, Lambda), GCP, Azure

• Knowledge in deployment automation, Continuous Integration and Continuous Deployment (Jenkins, Maven, Puppet, Chef, GitLab) and monitoring tools like Zabbix, Cloud Watch Monitoring, Nagios Knowledge of Java Virtual Machines, Apache Tomcat, Nginx, Apache Kafka, Microservices architecture, Caching mechanisms

• Experience in enterprise application development, maintenance and operations

• Knowledge of best practices and IT operations in an always-up, always-available service

• Excellent written and oral communication skills, judgment and decision-making skills

Total working Experience 

3 to 6 years

Job Location 

Bangalore

Key accountabilities include: 

• Must have 5+ years of experience in 
• Secure web application development using Angular 7+
• Integrating the web application with REST APIs
• Strong logical problem-solving skill
• Must have strong knowledge in debugging the Angular application and REST APIs
• Must have strong knowledge in Data structure, Algorithms and Object-Oriented Programming
• Must have worked on IIS webs server and Angular
• Must have knowledge in data encryption and decryption algorithm using certificates & troubleshooting, SHA-256
• Good in web application debugging and troubleshooting.
• Good web application error log analysis 

Skills

• Angular version 7+
• TypeScript
• JavaScript
• IIS / Tomcat / NGINX
• Data Structure

Relevant experience on using tools like JSP, Servlet for web applications

· MVC frame works - Struts or Spring

· Web services- SOAP and REST WebLogic, Hibernate

· Middleware technologies MQ OSB.

· Web/App Servers: Tomcat or WebLogic or JBoss

· Experience using Angular, Micro Services using Spring, jersey, Swagger

· Good knowledge of Backend and Front-end technologies

· Good knowledge of Core Java, J2EE, Ajax, Spring, Java Script, jQuery, HTML

· Good knowledge of any RDBMS database like SQL Server, Oracle, MySQL & Cluster set-up, performance benchmarking, client-side API evaluation, knowledge of various deployment strategies

· Strong knowledge with Core JAVA concepts – Exception handling, Multi-threading, Collection, String, OOPS etc…

· Advanced understanding of Windows and Linux based operating systems

· Mainly 3-4 months hands on with reverse engineering and old legacy solutions to new modern applications

· Working knowledge using REST, HTTP, TCP, SCTP protocols

· Hands-on with JAVA frameworks such as – Thread Pool Executor, Object Pooling, Logging (Log4j preferred), XML/JSON handling

Education Criteria:

· Preferred BE degree in CS, E&C, E&E

· Proficient being a J2EE Developer (courses or project done) and data analytics skills

· Flexible to work on any projects assigned

Note: Terms & Conditions

· This opportunity will be work from office

· Reporting location - Bangalore office, Vijayanagar

• Must have experience in either of JavaScript frameworks: Angular
• Must have experience in either of backend software development [J2EE, Spring Boot, Spring core, JPA]
• Must have experience in designing/implementing Hibernate/ORM, Restful web services, Micro Services using Java
• Knowledge with relational/ NoSQL databases (e.g., Oracle, MySQL, MongoDB)
• Knowledge with versioning (Git or SVN) /build tools (Maven/Ant/Gradle/Junit), Unit testing & code coverage tools is desired
• Knowledge of App / Web servers (NGINX / Tomcat / Jboss Wildfly)
• Understands the process of new application development and has the ability to apply these concepts with minimal mentoring and supervision.
• Advanced knowledge experience using any of IDE (e.g., Eclipse, SonarQube, STS, VS Code)
• Knowledge on Cloud platform, technologies & deployments is an added advantage
• Resolves technical issues through debugging, research, and
• Must have experience with Agile tools

• Good knowledge in product development domains
• Knowledge in Finance and Insurance domain preferred
• Maintain quality and ensure responsiveness of
• Complete application development by coordinating requirements, schedules, and activities contributing to team meetings;
• Troubleshooting development and production problems across multiple environments and operating platforms.
• Collaborate with the rest of the engineering team to design and launch new features
• Understanding and implementation of security and data
• Ensure designs are in compliance with specifications and standards and best industry
• Usage of Process tools – JIRA, TFS, HP QC or any other agile tools, also knowledge of CMM Level 3 development process.
• Self-motivated & working independently with minimal
• Maintain code integrity and
• Experience working with graphic designers and converting designs to visual
• Follow the coding standards for java and angular

• Usage of troubleshooting tools like J Profiler, J Meter or application performance tuning
• Exposure to Non-web-based developments, for both mobile and
• Development experience using Docker, Kubernetes, Containerization etc in AWS or other cloud platforms
• Willing to take up proof of concepts and showcase the technical capability
• Usage of design tools Visio or draw io
• Usage of CI/CD pipeline

Only apply on this link - https://loginext.hire.trakstar.com/jobs/fk025uh?source=" target="_blank">https://loginext.hire.trakstar.com/jobs/fk025uh?source=

LogiNext is looking for a technically savvy and passionate Associate Vice President - Product Engineering - DevOps or Senior Database Administrator to cater to the development and operations efforts in product. You will choose and deploy tools and technologies to build and support a robust infrastructure.

You have hands-on experience in building secure, high-performing and scalable infrastructure. You have experience to automate and streamline the development operations and processes. You are a master in troubleshooting and resolving issues in dev, staging and production environments.

Responsibilities:

• Design and implement scalable infrastructure for delivering and running web, mobile and big data applications on cloud
• Scale and optimise a variety of SQL and NoSQL databases (especially MongoDB), web servers, application frameworks, caches, and distributed messaging systems
• Automate the deployment and configuration of the virtualized infrastructure and the entire software stack
• Plan, implement and maintain robust backup and restoration policies ensuring low RTO and RPO
• Support several Linux servers running our SaaS platform stack on AWS, Azure, IBM Cloud, Ali Cloud
• Define and build processes to identify performance bottlenecks and scaling pitfalls
• Manage robust monitoring and alerting infrastructure 
• Explore new tools to improve development operations to automate daily tasks
• Ensure High Availability and Auto-failover with minimum or no manual interventions

Requirements:

• Bachelor’s degree in Computer Science, Information Technology or a related field
• 11 to 14 years of experience in designing and maintaining high volume and scalable micro-services architecture on cloud infrastructure
• Strong background in Linux/Unix Administration and Python/Shell Scripting
• Extensive experience working with cloud platforms like AWS (EC2, ELB, S3, Auto-scaling, VPC, Lambda), GCP, Azure
• Experience in deployment automation, Continuous Integration and Continuous Deployment (Jenkins, Maven, Puppet, Chef, GitLab) and monitoring tools like Zabbix, Cloud Watch Monitoring, Nagios
• Knowledge of Java Virtual Machines, Apache Tomcat, Nginx, Apache Kafka, Microservices architecture, Caching mechanisms
• Experience in query analysis, peformance tuning, database redesigning, 
• Experience in enterprise application development, maintenance and operations
• Knowledge of best practices and IT operations in an always-up, always-available service
• Excellent written and oral communication skills, judgment and decision-making skills.
• Excellent leadership skill.

Client: Sony Corporation

Position: 3

Exp: 5-8Years

DevOps Engineer

Location: Bangalore

Budget: 16.5 LPA Max

Gerrit ,Jenkins, Rabbit MQ AWS Linux
Python ,Ansible, Tomcat ,Postgresql
Grafana ,Groovy,HTML,Shell,Apache,Git , ELK

JOB RESPONSIBILITIES:

• Responsible for design, implementation, and continuous improvement on automated CI/CD infrastructure
• Displays technical leadership and oversight of implementation and deployment planning, system integration, ongoing data validation processes, quality assurance, delivery, operations, and sustainability of technical solutions
• Responsible for designing topology to meet requirements for uptime, availability, scalability, robustness, fault tolerance & security
• Implement proactive measures for automated detection and resolution of recurring operational issues
• Lead operational support team manage incidents, document root cause and tracking preventive measures
• Identifying and deploying cybersecurity measures by continuously validating/fixing vulnerability assessment reports and risk management
• Responsible for the design and development of tools, installation procedures
• Develops and maintains accurate estimates, timelines, project plans, and status reports
• Organize and maintain packaging and deployment of various internal modules and third-party vendor libraries
• Responsible for the employment, timely performance evaluation, counselling, employee development, and discipline of assigned employees.
• Participates in calls and meetings with customers, vendors, and internal teams on regular basis.
• Perform infrastructure cost analysis and optimization

SKILLS & ABILITIES

Experience: Minimum of 10 years of experience with good technical knowledge regarding build, release, and systems engineering

Technical Skills:

• Experience with DevOps toolchains such as Docker, Rancher, Kubernetes, Bitbucket
• Experience with Apache, Nginx, Tomcat, Prometheus ,Grafana
• Ability to learn/use a wide variety of open-source technologies and tools
• Sound understanding of cloud technologies preferably AWS technologies
• Linux, Windows, Scripting, Configuration Management, Build and Release Engineering
• 6 years of experience in DevOps practices, with a good understanding of DevOps and Agile principles
• Good scripting skills (Python/Perl/Ruby/Bash)
• Experience with standard continuous integration tools Jenkins/Bitbucket Pipelines
• Work on software configuration management systems (Puppet/Chef/Salt/Ansible)
• Microsoft Office Suite (Word, Excel, PowerPoint, Visio, Outlook) and other business productivity tools
• Working knowledge on HSM and PKI (Good to have)

Location:

• Bangalore

Experience:

• 10 + Years.

Job description

The ideal candidate must have extensive development experience of microservices using Java Spring Boot. In addition, they should know the installation, configuration, platform operations, and troubleshooting of API products. Besides, they should also have experience in API design, BaaS, Advanced proxies, Analytics, Developer Portal, and creating RESTful API patterns.

Responsibility

Develop and design RESTful microservices and APIs

Be involved in the development life cycle and would be doing definition and feasibility analysis

Apply latest software design techniques and contribute to the technical design of new solutions

Troubleshoot issues and solve problems where needed

Write object-oriented and maintainable code

Deliver quality results on time with minimal supervision

Work with multiple stakeholders involved in the project

Deliver APIs with standard documentation as per Open API standards

Skillset

Bachelor’s/Master’s degree in computer science, information technology, or engineering

At least 3-5+ years of experience in developing APIs and microservices using Spring Boot

Expertise in Java

Hands-on Experience in OOPS concepts, Spring Boot, Spring 3.x, Spring Dependency Injection (IOC, MVC, JDBC, JMS, etc.), and hibernate or any other ORMs

Hands-on experience in web services-RESTful

Knowledge of Restful API design patterns

Working knowledge in Databases (SQL Server, Oracle) and SQL

Hands-on experience in NGINX (Webserver and Reverse proxy)

Hands-on experience in setting up MTLS between microservices

Hands-on experience in docker implementation

Hands-on experience in consuming SOAP services from microservices

Hands-on experience in application servers like Tomcat and WebLogic

Hands-on experience in any of Java IDE (Eclipse, IntelliJ)

Hands-on experience in dependency and build management tools preferably Maven

Familiarity with code versioning tools, like Git, SVN, and Mercurial

Familiarity with APIGEE API gateway

Familiarity with Node.js

Onsite - Bahrain

B2BTesters is a fast growing startup with a team of 120+ people providing Testing As A Service (TAAS) to funded startups such as zeelearn, 73 Strings , BIZONGO, Classplus and many more. Within one year of operations, we have acquired 30+ blue chip startups and crossed 100 colleagues. 

To continue this rapid growth, we like to get onboard experienced Testers in the roles of Leads and Managers in our Head Quarters - Navi Mumbai. 

With us you will have the exposure to a wide variety of industries and be in the cutting edge of latest happenings and technologies in the startup world and the testing world. 

Job Summary:

The Quality Assurance (QA) Manager will oversee the activity of the quality assurance department and staff, developing, implementing, and maintaining a system of quality and reliability testing for the organization’s products and/or development processes.

Supervisory & Responsibilities:

• Hires     and trains quality assurance staff.   
• Oversees the daily workflow and schedules of the department.   
• Conducts performance evaluations that are     timely and constructive.        
• Handles discipline and termination of employees in accordance with company     policy.    
  
  

     Role & Responsibilities:

• Develops, implements, and manages processes to ensure that products meet     required specifications for quality, function, and reliability prior to delivery.   
• Identifies and sets appropriate quality standards and parameters for products.    
• Communicates quality standards and parameters to QA team, product development     team, and other appropriate staff.   
• Coordinates product testing processes.    
• Participates in product testing.    
• Identifies and analyzes issues, bugs, defects, and other problems, particularly     when problems recur in multiple products; recommends and facilitates     solutions to these issues.
• Reviews client, customer, and user feedback.   
• Performs other duties as assigned.    
  
  

Required Skills/Abilities:

• Hands     on experience in Manual/Automated testing        
• Excellent understanding of automated frameworks & techniques   
• Excellent in development and execution of test scripts   
• Excellent understanding of Rest/Soap API testing   
• Good     knowledge of accessing and configuring Databases   
• Experience with automated tools like selenium
• Experience with BDD tools like Cucumber/JBehave   
• Knowledge of web servers like IIS/Tomcat would be plus        
• Working knowledge in Agile/Scrum environment   
• Knowledge on performance & security testing   
• Excellent verbal and written communication skills.        
• Excellent interpersonal and customer service skills.   
• Excellent organizational skills and attention     to detail.   
• Excellent time management skills with a proven ability to meet deadlines.   
• Strong supervisory and leadership skills.
  
  

• Bachelor’s degree in Computer Science, Engineering, or field related to the     products being developed are required.
• More     than 8 years of experience in related fields required with supervisory experience a plus.
  
  

What do we offer

• Widest exposure - learn whats going on in the startup world directly interacting with funded companies across edtech, fintech, gaming, healthtech, logistics, ecom etc

• Be part of the most innovative player in the testing startup world. We are building tools and technologies to make testing easier, faster and better. To do that, we are reimagining processes, and products. We are innovating across the board. 

• Competitive Salary - benchmarked against the industry.  

• Lucrative Incentives - workation, allowances, interesting offers 
• Immense opportunity to learn and grow in an organization with a young dynamic workforce in startup culture.

B2BTesters is a fast growing startup with a team of 120+ people providing Testing As A Service (TAAS) to funded startups such as zeelearn, 73 Strings , BIZONGO, Classplus and many more. Within one year of operations, we have acquired 30+ blue chip startups and crossed 100 colleagues. 

To continue this rapid growth, we like to get onboard experienced Testers in the roles of Leads and Managers in our Head Quarters - Navi Mumbai. 

With us you will have exposure to a wide variety of industries and be in the cutting edge of latest happenings and technologies in the startup world and the testing world. 

Job Summary:

Lead Quality Assurance Engineer is required to have hands-on experience in end to end Manual/Automated testing. He/She should be able to write test plans/strategy and should be able to execute it. He/She should be able to write an automation framework from scratch and should be able to write test scripts..

Skill Requirements:

Hands on experience in Manual/Automated testing

Excellent understanding of automated frameworks & techniques

Excellent in development and execution of test scripts

Excellent understanding of Rest/Soap API testing

Good knowledge of accessing and configuring Databases

Experience with automated tools like selenium

Experience with BDD tools like Cucumber/JBehave

Knowledge of web servers like IIS/Tomcat would be plus

Working knowledge in Agile/Scrum environment

Knowledge on performance & security testing

Excellent verbal and written communication skills.

• Bachelor’s degree in Computer Science, Engineering, or field related to the     products being developed are required.   
• More     than 5 years of experience in related field required with     supervisory experience a plus.

What do we offer

• Widest exposure - learn whats going on in the startup world directly interacting with funded companies across edtech, fintech, gaming, healthtech, logistics, ecom etc

• Be part of the most innovative player in the testing startup world. We are building tools and technologies to make testing easier, faster and better. To do that, we are reimagining processes, and products. We are innovating across the board. 

• Competitive Salary - benchmarked against the industry.  

• Lucrative Incentives - workation, allowances, interesting offers 
• Immense opportunity to learn and grow in an organization with a young dynamic workforce in startup culture.

Operates in over 25 countries across six continents and is part of Publicis Media, one of four solution hubs within Publicis Groupe, which is present in over 100 countries and employs nearly 80,000 professionals.

We  believe there are better ways for brands to connect with people. And we’re on a mission to guide brands to better connections -- across consumers, channels and partners. These are just some of the services we offer our clients in our quest to deliver ambitious outcomes.

Skills Required:

• Servlet and JSP development
• CSS, JavaScript, HTML
• AJAX, jQuery, EXTJS
• OSGi/FELIX
• Web services creation and consumption
• CMS development experience
• Java Content Repository (JCR)/CRX
• Eclipse IDE
• Maven
• SVN
• Jenkins
• Artifactory
• Apache Sling
• Lucene
• Tomcat/JBoss
• Apache Web Server

5 years of architecture, design and programming experience preferably in fast-paced dynamic environment

Strong application design and implementation skills, solid understanding of the entire development cycle.

Strong background in Java/J2EE based application

Strong background in Spring/Spring boot based application

Strong background in Microservices based application

Experience working with Apache and/or Tomcat

Experience in transforming requirements to software design

Strong Experience with developing Java SAAS web applications.

Working experience in Industry Standard protocols related API Security including OAuth

Demonstrate strong design and programming skills using JSON, Web Services, XML, XSLT, PL/SQL in Unix and Windows environments.

Strong background working with Linux/UNIX environments.

Strong Shell scripting experience.

Working knowledge with Oracle, DB2 or MongoDB databases.

 Passion to stay on top of the latest happenings in the tech world and an attitude to discuss and bring those into play.  Strong agile/scrum development experience

 Strong collaboration and communication skills within distributed project teams

 Excellent written and verbal communication skills

Required Qualifications and Skills:

• 3-5 years of work experience in the development background, with at least 2 years experience in Java, Spring, Sprint Boot, Hibernate or JPA, MySQL, Oracle, Spring MVC.
• B.E. degree in Computer Science, Graduate in Software Engineering or equivalent
• Experience in Core JAVA, Spring, Spring Boot Frameworks.
• Experience with ORM's like Hibernate.
• Good knowledge of developing RESTful web services using Spring Boot, Java1.x,Servlet2.4, JSP2.0, JDBC3.0, Java Mail, Struts2.x, HTML, HTML5, Angular7+, JavaScript, JSF, Bootstrap2.x-3.x, JQuery & CSS 3.x, Maven 3.x, Apache Tomcat7
• Knowledge of Cloud AWS.
• Experience in any Messaging Queue e.g. Apache Kafka, ActiveMQ, etc.
• Experience on Web services with REST and SOAP.
• Experience working on tool set like Eclipse IDE, SQL clients.
• Experience using application server like Jboss, TomCat, Wildfly, glassfish.
• Experience in using tools like SOAP UI, POSTMAN
• Ability to write SQL queries to fetch data.
• Knowledge of Micro services, Redis Cache and Mongo DB (or any other NoSQL) is good to have

Fullstack Developer/Architect/Programmer:

1. 8-10 years experience as Developer/Programmer.
2. Should have an expertise in Core Java, Java & J2ee
3. Built MVC based Web Application Using JSP/Struts framework
4. Experience in Webservices-Restful
5. Experience in Application Servers like Tomcat and WebLogic
6. Good Knowledge of implementing JMS messaging services
7. Good knowledge of HTML5,CSS and JavaScript – Angular.js,Bootstrap, React.js
8. Should have skills in Spring 3.x, Hibernate, Weblogic 12c Implementation

• Provide objective guidance without personal or political considerations.
• Pitching ideas for projects based on gaps in the market and technological advancements.
• Rolling out fixes and upgrades to software, as needed.
• Securing software to prevent security breaches and other vulnerabilities.
• Setting up a continuous build environment to speed up software development and deployment process.
• Architecting overall, comprehensive, and efficient practices.
• Guiding developers and operation teams in case of an issue.
• Monitoring, reviewing, and managing technical operations.

Requirements:

• Degree in Computer Science, Information Systems, or related field.
• Previous experience working on a 24x7 cloud or SaaS operation team.
• Spring Boot Java 8, Spring Core, Spring Boot, Spring MVC, Swagger, Tomcat 8, Maven, Jenkins, SVN, GIT, Postman/Newman, RESTful Services, Containers.
• Experience with infrastructure management and monitoring.
• Proven in developing, implementing, and providing solutions to the given problem in all Java technologies.
• Proficient in stitch-together end-to-end application starting from front-end web development, back-end development, middleware integration, and persisting data in no SQL or DBMS databases.
• Ability to work independently and as part of a team.

• 5-7 years of relevant product design, development and testing experience
• Strong technical skills in java springboot/MVC frameworks, reactjS. API development, Cloud native solutions like lambda, azure functions is good to have.
• Database – primarily Mongo DB, Knowledge of postgres /MySQL is good to have
• DevOps - Knowledge of DevOps will be good to have
• API - Preferred experience with one of API gateway platform (Apigee, Mulesoft, Kong, WSO2)
• Good communication skills, with an ability to express and understand complex technical concepts.
• Strong analytical, problem-solving, and conceptual skills.
• Ability to work under pressure and meet tight deadlines.
• Experience of working with globally distributed teams.
• Innovative and Self learner for mentoring and problem resolutions.
• Ability to mentor and manage product teams

Role & Responsibilities:

• Handle multiple products/modules simultaneously, lead the team in development and support
• Lead development teams
• Daily updates to customers and Product Managers/Delivery Managers
• Participate in design discussions
• Design and Architect small modules
• Effort estimations for modules, subsystems or use cases.
• Learn new skills and mentor the new team members
• Champion best practices within the team, including code reviews
  
  

Work Experience & Skills:

• B.E/B.Tech or any relevant Masters degree from reputed college.
• Strong 5+ years of experience in Java, J2EE, Spring IOC, Spring Annotations, Spring JDBC, Jquery, Java script, HTML 5 and CSS
• Strong experience in Postgres or any SQL technology
• Experience with working on Tomcat, Apache, JBoss or any similar application server
• Should have 3+ years of experience in leading team.
• Good experience in JSON / RESTful API / Web Services.
• Experience in working on Agile methodology using Scrum and sprints
• Experience in using build tools, Maven, GIT, Bugzilla or similar tools.
• Experience in cloud technologies, Microservices and frameworks such as AWS or GPC, container technologies like Docker is a plus.
• Ability to adapt to new development environments, changing business requirements and learning new systems highly desired
• Experience in Microservices, SpringBoot and Angular is a plus.
• Experience with tuning deployed applications for scalability and performance.
• Good knowledge of deployment and scripting on Linux/Unix servers
• Strong technical documentation skills.
• Good oral and written communication skills

Major Responsibility/ Job Responsibility:    

Strong knowledge with Java frameworks (Spring, Hibernate, Mybatis)

Strong core Java 7 or Java 8 skills (with good understanding of multithreading and performance tuning)

Strong understanding of object-oriented design patterns.

Strong experience in Architecture & Designing, Web services (Rest or SOAP)

Good knowledge on Jasper Reports, iReports & XML

Strong understanding and experience on JavaScript (object oriented), AJAX, JQuery, Anuglar 2 or 4, Primefaces

Good knowledge on SQL and PL/SQL for Postgres, Oracle database

Good understanding of application and web servers – JBOSS, TOMCAT, JETTY

Hands- on experience for Eclipse IDE

Self-learner willing to experiment with latest features

Team player, willing to take responsibility and contribute

Experience in Waterfall/Agile development

Good communication skills both written and oral.

Hands on Experience with Unit Testing of Application using Junit Framework.

Key Result Areas:

Requirement analysis, design, Coding & unit testing

Technical documentation

Timely delivery of module with good quality

Sound knowledge on OOAD

Sound knowledge on n-tier, MVC architecture

Necessary Qualification/ Technical Skills:

2-5 years of total IT experience

Strong knowledge with Java frameworks (Spring, Hibernate, mybatis,)

Strong core Java 7 or Java 8 skills (with good understanding of multithreading and performance tuning)

Strong understanding and experience on JavaScript (object oriented), AJAX, JQuery, Anuglar 2 or 4,Primefaces

Good knowledge on Jasper Reports, iReports & XML

Good knowledge on SQL or PL/SQL for Postgres, MySQL, Oracle database.

Good understanding of application and web servers – JBOSS,TOMCAT,JETTY

Desirable:

Experience in short release cycles & full software life cycle.

Entire SDLC knowledge

Demonstrated problem solving, analytic and troubleshooting skills.

Basic/Advanced Java Certification

Special Skills (If Any):

Experience in Performance Tuning and creation of secured applications

Experience with high volume and highly scalable application is a plus.

Experience in Transport, Logistics & Finance domain