VIP Product Counsellor (Male Only)

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)

Experience: -

* Minimum 2 year of coding experience in ReactJS (TypeScript), HTML, CSS-Pre-processors, or CSS-in-JS in creating Enterprise Applications with high performance for Responsive Web Applications.

* Minimum 2 year of coding experience in NodeJS, JavaScript & TypeScript and NoSQL Databases.

* Developing and implementing highly responsive user interface components using React concepts. (self-contained, reusable, and testable modules and components)

* Architecting and automating the build process for production, using task runners or scripts

* Knowledge of Data Structures for TypeScript.

* Monitoring and improving front-end performance.

* Banking or Retail domains knowledge is good to have.

* Hands on experience in performance tuning, debugging, monitoring.

Technical Skills: -

* Excellent knowledge developing scalable and highly available Restful APIs using NodeJS technologies

* Well versed with CI/CD principles, and actively involved in solving, troubleshooting issues in distributed services ecosystem

* Understanding of containerization, experienced in Dockers, Kubernetes.

* Exposed to API gateway integrations like 3Scale.

* Understanding of Single-Sign-on or token-based authentication (Rest, JWT, OAuth)

* Possess expert knowledge of task/message queues include but not limited to: AWS, Microsoft Azure, Pushpin and Kafka.

* Practical experience with GraphQL is good to have.

* Writing tested, idiomatic, and documented JavaScript, HTML and CSS

* Experiencing in Developing responsive web-based UI

* Have experience on Styled Components, Tailwind CSS, Material UI and other CSS-in-JS techniques

* Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system

* Writing non-blocking code, and resorting to advanced techniques such as multi-threading, when needed

* Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

* Documenting the code inline using JSDoc or other conventions

* Thorough understanding of React.js and its core principles

* Familiarity with modern front-end build pipelines and tools

* Experience with popular React.js workflows (such as Flux or Redux or ContextAPI or Data Structures)

* A knack for benchmarking and optimization

* Proficient with the latest versions of ECMAScript (JavaScript or TypeScript)

* Knowledge of React and common tools used in the wider React ecosystem, such as npm, yarn etc

* Familiarity with common programming tools such as RESTful APIs, TypeScript, version control software, and remote deployment tools, CI/CD tools

* An understanding of common programming paradigms and fundamental React principles, such as React components, hooks, and the React lifecycle

* Unit testing using Jest, Enzyme, Jasmine or equivalent framework

* Understanding of linter libraries (TSLINT, Prettier etc)

Functional Skills: -

* Experience in following best Coding, Security, Unit testing and Documentation standards and practices

* Experience in Agile methodology.

* Ensure quality of technical and application architecture and design of systems across the organization.

* Effectively research and benchmark technology against other best in class technologies.

Soft Skills: -

* Able to influence multiple teams on technical considerations, increasing their productivity and effectiveness, by sharing deep knowledge and experience.

* Self-motivator and self-starter, Ability to own and drive things without supervision and works collaboratively with the teams across the organization.

* Have excellent soft skills and interpersonal skills to interact and present the ideas to Senior and Executive management.

Role Overview: We are looking for a skilled Workflow Developer/Sr Developer with expertise in JBPM to join our offshore team. The ideal candidate will have extensive experience in developing and managing workflow solutions, with a strong focus on JBPM. This role involves working closely with various departments to ensure seamless integration and functionality of workflow processes.

Key Responsibilities:

 Design, develop, and implement workflow solutions using JBPM.

 Collaborate with cross-functional teams to gather requirements and ensure the workflow solutions meet business needs.

 Optimize and maintain existing workflow systems to enhance performance and reliability.

 Troubleshoot and resolve issues related to workflow processes.

 Provide technical guidance and mentorship to junior developers.

 Stay updated with the latest trends and advancements in workflow technologies and JBPM.

Technical Skills:

 Strong experience in JBPM and workflow management.

 Proficiency in Java and related technologies.

 Experience with BPMN 2.0 and process modeling.

 Knowledge of integration with other systems and tools.

 Familiarity with cloud platforms and deployment processes.

• Responsible for providing technical leadership, design and development of complex pieces of the service oriented architecture based platform.
• Modelling Database Design for large scale applications.
• Develop for performance engineering.
• Design for the right use of micro services, containerization and observability.

• Drive technology and product innovation through rapid prototyping and iterative development.
• Create reference implementation for our integrations and for backward compatibility.
• Not interested in managerial responsibilities

Requirements, Desired Skills and Experience

• Tech Stack based on Ruby-on-Rails, Python-Django or Node.js frameworks.

• Engineering degree 

   Opportunities for the right candidate

• Build and develop SaaS and PaaS products from scratch
• Build the best-in-class UX based products
• State of Art technologies (Latest trends in the industry)
• Work with a well-knit team, almost like one’s family
• Startup culture and advantages of working in a co-working space
• Performance based career progress and high visibility with management and founders

As a Node.js Developer at Primathon Technology, you will be responsible for designing, developing, and maintaining server-side applications using Node.js. You will collaborate with cross-functional teams to implement new features, optimize existing functionality, and ensure the best possible performance, security, and user experience. Key Responsibilities:

1. Develop and maintain server-side applications using Node.js, ensuring optimal performance and scalability.

2. Collaborate with front-end developers, designers, and other stakeholders to implement new features and enhance existing functionality.

3. Write clean, maintainable, and efficient code while adhering to coding standards and best practices.

4. Participate in code reviews to ensure code quality and consistency within the development team.

5. Troubleshoot and debug issues across the application stack, identifying and resolving performance bottlenecks and other challenges. 6. Implement security and data protection measures, ensuring the application's compliance with industry standards.

7. Optimize applications for maximum speed and scalability. Qualifications and Skills:

1. Bachelor's degree in Computer Science, Engineering, or a related field.

2. Minimum of 2 years of professional experience as a Node.js Developer

. 3. Proficient in server-side JavaScript programming using Node.js.

4. Strong understanding of asynchronous programming, including Promises and async/await.

5. Experience with RESTful API development and integration.

6. Familiarity with front-end technologies such as HTML, CSS, and JavaScript frameworks (e.g., React, Angular, Vue) is a plus.

7. Knowledge of database systems (e.g., MongoDB, MySQL, PostgreSQL) and data modeling.

8. Experience with version control systems (e.g., Git) and collaborative development workflows.

9. Good understanding of software development lifecycle (SDLC) and agile methodologies.

10. Strong problem-solving skills and attention to detail

About the Role

The Dremio India team owns the DataLake Engine along with Cloud Infrastructure and services that power it. With focus on next generation data analytics supporting modern table formats like Iceberg, Deltalake, and open source initiatives such as Apache Arrow, Project Nessie and hybrid-cloud infrastructure, this team provides various opportunities to learn, deliver, and grow in career. We are looking for technical leaders with passion and experience in architecting and delivering high-quality distributed systems at massive scale.

Responsibilities & ownership

• Lead end-to-end delivery and customer success of next-generation features related to scalability, reliability, robustness, usability, security, and performance of the product
• Lead and mentor others about concurrency, parallelization to deliver scalability, performance and resource optimization in a multithreaded and distributed environment
• Propose and promote strategic company-wide tech investments taking care of business goals, customer requirements, and industry standards
• Lead the team to solve complex, unknown and ambiguous problems, and customer issues cutting across team and module boundaries with technical expertise, and influence others
• Review and influence designs of other team members 
• Design and deliver architectures that run optimally on public clouds like GCP, AWS, and Azure
• Partner with other leaders to nurture innovation and engineering excellence in the team
• Drive priorities with others to facilitate timely accomplishments of business objectives
• Perform RCA of customer issues and drive investments to avoid similar issues in future
• Collaborate with Product Management, Support, and field teams to ensure that customers are successful with Dremio
• Proactively suggest learning opportunities about new technology and skills, and be a role model for constant learning and growth

Requirements

• B.S./M.S/Equivalent in Computer Science or a related technical field or equivalent experience
• Fluency in Java/C++ with 15+ years of experience developing production-level software
• Strong foundation in data structures, algorithms, multi-threaded and asynchronous programming models and their use in developing distributed and scalable systems
• 8+ years experience in developing complex and scalable distributed systems and delivering, deploying, and managing microservices successfully
• Subject Matter Expert in one or more of query processing or optimization, distributed systems, concurrency, micro service based architectures, data replication, networking, storage systems
• Experience in taking company-wide initiatives, convincing stakeholders, and delivering them
• Expert in solving complex, unknown and ambiguous problems spanning across teams and taking initiative in planning and delivering them with high quality
• Ability to anticipate and propose plan/design changes based on changing requirements 
• Passion for quality, zero downtime upgrades, availability, resiliency, and uptime of the platform
• Passion for learning and delivering using latest technologies
• Hands-on experience of working projects on AWS, Azure, and GCP 
• Experience with containers and Kubernetes for orchestration and container management in private and public clouds (AWS, Azure,  and GCP) 
• Understanding of distributed file systems such as  S3, ADLS or HDFS
• Excellent communication skills and affinity for collaboration and teamwork