Quality Analyst

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)

Proven experience as an Angular Developer.

Proficient in Angular and its core principles.

Strong knowledge of HTML, CSS, and JavaScript.

Experience with responsive UI design and development.

Familiarity with Angular Material, Bootstrap, and PrimeNG.

Ability to create reusable components and front-end libraries.

Understanding of RESTful APIs and web services.

Experience with version control systems such as Git.

Strong problem-solving skills and attention to detail.

Excellent communication and teamwork skills.

Job Responsibilities:

• Assist in the design, development, and maintenance of high-quality Android applications using Java/Kotlin.
• Work with Android Studio to write clean, efficient, and well-documented code.
• Implement and adhere to MVVM (Model-View-ViewModel) architectural patterns to ensure scalable and maintainable applications.
• Utilize Data Binding to streamline UI development and improve code readability.
• Develop user interfaces with a strong understanding of various Layouts (ConstraintLayout, LinearLayout, RelativeLayout, etc.) and responsive design principles.
• Integrate applications with RESTful Webservices using libraries like Retrofit to connect with backend services and handle data efficiently.
• Gain experience in interacting with databases, including basic operations with SQLite Database (Creating, Updating/Querying) for local data storage and understanding of server-side data interaction.
• Apply Debugging Skills using tools such as Logcat, Android Debugger (Debug), and Lint for identifying and resolving issues, and optimizing application performance.
• Leverage Plugin Tools like ADB Idea, Codata, and Lombok Plugin (if applicable) to enhance development workflow and productivity.
• Work with various Android APIs to implement new features and functionality.
• Participate in Testing the Android Application, including unit testing and collaborating with QA for functional and integration testing.
• Perform Lint for Code Inspection to ensure code quality, consistency, and adherence to best practices.
• Learn and apply fundamental Design Patterns (e.g., Singleton, Observer) in Android development.
• Collaborate effectively with cross-functional teams, including product managers, UI/UX designers, and backend developers, to define, design, and ship new features.
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency and improve application performance.
• Stay up-to-date with the latest Android development trends and best practices.

Required Skills and Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent practical experience).
• 0-2 years of hands-on experience in Android application development.
• Solid understanding of Android SDK and Android Studio.
• Proficiency in at least one of the primary Android programming languages: Java or Kotlin.
• Familiarity with MVVM architecture.
• Basic knowledge of Data Binding.
• Understanding of various Android Layouts.
• Exposure to SQLite Database and concepts of server-side interaction.
• Familiarity with Retrofit for API consumption.
• Demonstrated Debugging Skills using relevant Android tools.
• Awareness of common Plugin Tools for Android development.
• Basic understanding of Android APIs.
• Knowledge of RESTful Webservices principles.
• Experience with testing methodologies for Android applications.
• Ability to use Lint for Code Inspection.
• Eagerness to learn and apply Design Patterns.
• Strong problem-solving abilities and attention to detail.
• Excellent communication and teamwork skills.
• A portfolio of personal or academic Android projects is a strong plus.

• Familiarity with the ASP.NET framework, SQL Server and design/architectural patterns (e.g. Model-View-Controller (MVC)
• 5 years of development experience using C# .NET
• Knowledge of at least one of the .NET languages (e.g. C#, Visual Basic .NET) and HTML5/CSS3
• Familiarity with architecture styles/APIs (REST, RPC)
• Understanding of Agile methodologies
• Strong attention to detail
• Excellent troubleshooting and communication skills
• Knowledge of REST and RPC APIs
• Able to work well in a team setting

Software Developer

Roles and Responsibilities

• Apply knowledge set to fetch data from multiple online sources, cleanse it and build APIs on top of it
• Develop a deep understanding of our vast data sources on the web and know exactly how, when, and which data to scrap, parse and store
• We're looking for people who will naturally take ownership of data products and who can bring a project all the way from a fast prototype to production.

Desired Candidate Profile

• At Least 1-2 years of experience
• Strong coding experience in Python (knowledge of Javascripts is a plus)
• Strong knowledge of scraping frameworks in Python (Request, Beautiful Soup)
• Experience with SQL and NoSQL databases
• Knowledge in Version Control tools like GIT.
• Good understanding and hands-on with scheduling and managing tasks with cron.

Nice to have:

• Experience of having worked with elastic search
• Experience with multi-processing, multi-threading, and AWS/Azure is a plus
• Experience with web crawling is a plus
• Deploy server/related components to staging, live environments.
• Experience with cloud environments like AWS,etc as well as cloud solutions like Docker,Lambda, etc
• Experience in DevOps and related practices to improve development lifecycle, continuous delivery with high quality is an advantage.
• Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement

• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (such as Flux or Redux)
• Hands on experience with Typescript
• Expertise with RESTful APIs integration and best practices
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements
• Familiarity with code versioning tools such as Git