11+ Ext JS Jobs in Kolkata | Ext JS Job openings in Kolkata

Hello,

Greetings from CodersBrain!

Coders Brain is a global leader in its services, digital, and business solutions that partners with its clients to simplify, strengthen, and transform their businesses. We ensure the highest levels of certainty and satisfaction through a deep-set commitment to our clients, comprehensive industry expertise, and a global network of innovation and delivery centers.

This is regarding the urgent opening for the'' ROR Developer role. We found your profile in the Cutshort database and it seems like a good fit for the organization. If you are interested, do revert back with your updated CV along with the details:

Permanent Payroll :  CodersBrain

Location:- Mumbai/ Kolkata

Notice Period:- imm./15 daysJob Description
Scope of work  This role is an exciting opportunity to build highly interactive

customer facing applications and products.
 Candidate will help transform vast collections of data into
actionable insights with intuitive and easy to use interfaces and
visualizations.
 Candidate will leverage the power of JavaScript and Ruby on
Rail to build novel features and improvements to our current suite
of tools.
 This team is responsible for customer-facing applications that
deliver SEO data insights.
 Through the applications customers are able to access insights,
workflows, and aggregations of information above and beyond
core data offerings

Responsibility 

 Build and maintain the core frontend application

 Work collaboratively with the engineers on the Frontend team to
ensure quality and performance of the systems through code
reviews, documentation, analysis and employing engineering
best practices to ensure high-quality software
 Contribute to org devops culture by maintaining our systems,
including creating documentation, run books, monitoring, alerting,
and integration tests, etc.
 Participate in architecture design and development for new
features and capabilities, and for migration of legacy systems, to
meet business and customer needs.
 Take turns in the on-call rotation, handling systems and
operations issues as they arise including responding to off-hours
alerts
 Collaborate with other teams on dependent work and integrations
as well as be vigilant for activities happening outside the team
that would have an impact on the work your team is doing.
 Work with Product Managers and UX Designers to deliver new
features and capabilities
 Use good security practices to protect code and systems
 Pitch in where needed during major efforts or when critical issues
arise
 Give constructive, critical feedback to other team members
through pull requests, design reviews, and other methods
 Seek out opportunities and work to grow skills and expertise.

C) Skills Required
Essential Skills  JavaScript (preferred ExtJS framework)

 Ruby
 Ruby on Rails
 MySQL
 Docker
Desired Skills  Terraform

 Basic Unix/Linux administration
 Redis
 Resque
 TravisCI
 AWS ECS
 AWS RDS
 AWS EMR
 AWS S3
 AWS Step Functions
 AWS Lambda Functions
 Experience working remotely with a distributed team
Great problem-solving skills

D) Other Information
Educational Qualifications Bachelor's degree/MCA
Experience  5– 8 years

Please confirm the mail with your updated CV  if you are interested in this position and also please share the below-mentioned details :

Current CTC:
Expected CTC:
Current Company:
Notice Period:

Notice Period:Are you okay with 1 week Notice period if not  then comfortable as freelancing work with us till joining:- 
Current Location:
Preferred Location:
Total-experience:
Relevant experience:
Highest qualification:

DOJ(If Offer in Hand from Other company):

offer in hand:

Alternate number:

Interview Availability

Job Position: Lead II - Software Engineering

Domain: Information technology (IT)

Location: India - Thiruvananthapuram

Salary: Best in Industry

Job Positions: 1

Experience: 8 - 12 Years

Skills: .Net, Sql Azure, Rest Api, Vue.Js

Notice Period: Immediate – 30 Days

Job Summary:

We are looking for a highly skilled Senior .NET Developer with a minimum of 7 years of experience across the full software development lifecycle, including post-live support. The ideal candidate will have a strong background in .NET backend API development, Agile methodologies, and Cloud infrastructure (preferably Azure). You will play a key role in solution design, development, DevOps pipeline enhancement, and mentoring junior engineers.

Key Responsibilities:

• Design, develop, and maintain scalable and secure .NET backend APIs.
• Collaborate with product owners and stakeholders to understand requirements and translate them into technical solutions.
• Lead and contribute to Agile software delivery processes (Scrum, Kanban).
• Develop and improve CI/CD pipelines and support release cadence targets, using Infrastructure as Code tools (e.g., Terraform).
• Provide post-live support, troubleshooting, and issue resolution as part of full lifecycle responsibilities.
• Implement unit and integration testing to ensure code quality and system stability.
• Work closely with DevOps and cloud engineering teams to manage deployments on Azure (Web Apps, Container Apps, Functions, SQL).
• Contribute to front-end components when necessary, leveraging HTML, CSS, and JavaScript UI frameworks.
• Mentor and coach engineers within a co-located or distributed team environment.
• Maintain best practices in code versioning, testing, and documentation.

Mandatory Skills:

• 7+ years of .NET development experience, including API design and development
• Strong experience with Azure Cloud services, including:
• Web/Container Apps
• Azure Functions
• Azure SQL Server
• Solid understanding of Agile development methodologies (Scrum/Kanban)
• Experience in CI/CD pipeline design and implementation
• Proficient in Infrastructure as Code (IaC) – preferably Terraform
• Strong knowledge of RESTful services and JSON-based APIs
• Experience with unit and integration testing techniques
• Source control using Git
• Strong understanding of HTML, CSS, and cross-browser compatibility

Good-to-Have Skills:

• Experience with Kubernetes and Docker
• Knowledge of JavaScript UI frameworks, ideally Vue.js
• Familiarity with JIRA and Agile project tracking tools
• Exposure to Database as a Service (DBaaS) and Platform as a Service (PaaS) concepts
• Experience mentoring or coaching junior developers
• Strong problem-solving and communication skills

Job Title: Golang Developer

Location: Kolkata

Job Type: Full-time

Working Days: 5 Days (Rotational off)

About the Role:

We are seeking a skilled Golang Developer with experience in Golang, Node.js, WebSocket

communication, and API development. In this role, you will work closely with our development

team to design, develop, and maintain high-performance backend systems and real-time

applications.

Key Responsibilities:

 Design, build, and maintain efficient, reusable, and reliable Golang code.

 Develop scalable APIs and microservices.

 Integrate and build real-time communication using WebSocket protocols.

 Collaborate with frontend developers and other team members to establish objectives

and design more functional, cohesive systems.

 Write clean, maintainable, and well-documented code.

 Optimize applications for maximum performance, scalability, and security.

 Participate in code reviews, contribute to team knowledge, and continuously improve

development processes.

 Troubleshoot, debug, and upgrade existing systems.

 Occasionally work with Node.js services and modules when needed.

Required Skills and Qualifications:

 Min 3+ years of experience in backend development with Golang.

 Solid understanding of Node.js and JavaScript/TypeScript.

 Hands-on experience with WebSocket integration and real-time applications.

 Strong knowledge of RESTful APIs, API design principles, and API documentation. Experience with relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).

 Good understanding of concurrent programming and microservices architecture.

 Familiarity with cloud platforms (AWS, GCP, Azure) is a plus.

 Knowledge of containerization tools like Docker and Kubernetes is a plus.

 Strong problem-solving skills, attention to detail, and a proactive attitude.

Job Opening: FreeSWITCH Developer

Location: Ecospace Business Park, Rajarhat, Newtown, Kolkata

Employment Type: Full-Time, Permanent

Shift: Day Shift

Experience: Minimum 4+ years in FreeSWITCH/VoIP Development

Responsibilities:

• Design, develop, deploy, troubleshoot, and maintain tools and services supporting our cloud telephony network.
• Customize FreeSWITCH for large-scale audio/video conferencing (1000–1500 concurrent calls).
• Expertise in SIP, RTP, RTCP, TURN, STUN, NAT, TLS.
• Hands-on experience with RTP Proxy and routed audio conferences.
• Understanding of SDP Protocol offer/answer mechanism.
• Work with load testing tools for FreeSWITCH audio conferences.
• Deploy and manage multiple FreeSWITCH instances using load balancers.
• Debug issues using packet captures (Wireshark/Ngrep).
• Collaborate with mobile/API teams for integration and support.
• Knowledge of codecs (PCMU, PCMA, G729, Opus) and open-source telephony technologies (FreeSWITCH, WebRTC).
• Familiarity with SIP servers (SER/OpenSER), proxy servers, SBC, SIPX is a plus.

Qualifications:

• Bachelor’s degree in Engineering (B.Tech/MCA).
• 4+ years of hands-on experience in FreeSWITCH development or related VoIP technologies.
• Strong knowledge of Linux environments and command-line tools.
• Basic to intermediate SQL knowledge.
• Proficiency in scripting (Bash, Python, Perl) for automation.
• Strong understanding of VoIP protocols (SIP, RTP), networking principles (TCP/IP, DNS, DHCP, routing protocols).
• Excellent troubleshooting skills with ability to resolve complex technical issues.
• Strong problem-solving, communication, and collaboration skills.

Industry Preference:

• Travel (Preferred)
• Any Industry (Required)

Job Title: WordPress Developer

Company: Fortmindz

Location: Kolkata

About Fortmindz:

Fortmindz is a cutting-edge software development company that specializes in delivering innovative and intuitive web and mobile applications. We are seeking a talented WordPress Developer to join our team and help us build world-class WordPress websites and plugins.

Responsibilities:

- Develop and customize WordPress themes and plugins based on project requirements

- Write clean, efficient, and maintainable code

- Troubleshoot and debug WordPress websites and plugins to optimize performance and user experience

- Collaborate with cross-functional teams to define, design, and ship new features

- Stay up-to-date with new WordPress features, technologies, and industry best practices

- Participate in code reviews and contribute to the continuous improvement of our development process

- Ensure WordPress websites and plugins are responsive and perform well across different devices and browsers

- Build and maintain custom WordPress themes and plugins using HTML, CSS, JavaScript, and PHP

Requirements:

- Bachelor's or Master's degree in Computer Science or a related field

- At least 2 years of experience as a WordPress Developer or in a similar role

- Strong knowledge of WordPress, including its core functionality, themes, and plugins

- Proficiency in HTML, CSS, JavaScript, and PHP

- Experience with Git and agile development methodologies

- Good understanding of responsive design principles and cross-browser compatibility

- Excellent problem-solving and debugging skills

- Strong communication and teamwork skills

Benefits:

- Competitive salary and benefits package

- Opportunities for career growth and professional development

- A dynamic and inclusive work environment

- Access to cutting-edge technologies and tools

If you are a talented WordPress Developer who is passionate about building high-quality WordPress websites and plugins, we would love to hear from you! Please submit your resume and a cover letter highlighting your relevant experience.

Fortmindz is an equal opportunity employer and values diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Required PHP Developer

Experience -at least 6 Month to 2 years

Male/Female Both Can Apply

Work closely with the Project Manager throughout the project process

Required Experience and Qualifications

Experience with PHP MVC Frameworks (CodeIgniter)

Salary-As Per Industry Norms/Based on Last Drawn Salary

Salary-based on last drawn salary

• Strong knowledge of PHP web frameworks such as Laravel, CI,
• Understanding the fully synchronous behaviour of PHP
• Understanding of MVC design patterns
• Basic understanding of front-end technologies, such as JavaScript,
• Knowledge of object oriented PHP programming
• Strong knowledge of the common PHP or web server exploits and their solutions
• Understanding fundamental design principles behind a scalable application
• User authentication and authorization between multiple systems, servers, and environments
• Integration of multiple data sources and databases into one system
• Familiarity with limitations of PHP as a platform and its workarounds
• Creating database schemas that represent and support business processes