C++ Developer

About the Role:

We are looking for an experienced VoIP Developer to design, develop, and maintain enterprise communication systems. You will work with Kamailio, OpenSIPS, Freeswitch, and Asterisk to build scalable VoIP solutions.

Skills Required:

• Hands-on experience with Kamailio, OpenSIPS, Freeswitch, Asterisk
• Knowledge of IMS & Diameter
• Proficiency in C / C++ programming
• Strong understanding of TCP/IP, LAN/WAN, VLAN/L3 VPNs
• Good knowledge of SIP/SDP, RTP/SRTP, TLS protocols
• Experience with MySQL / MongoDB
• Understanding of Enterprise PBX features
• Problem-solving and debugging skills
• Good written and verbal communication

Nice-to-Have:

• Building softPBX, Voicemail, ACD, IVRS applications
• Experience with Python, PHP, Java, JavaScript
• Linux administration and command-line skills
• Knowledge of WebRTC, firewall, security
• Familiarity with tools like cmake and git

What We Offer:

• Remote / flexible work options
• Opportunity to work on large-scale VoIP systems
• Collaborative environment with skilled peers

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)

We prefer candidates who can attend a walk-in interview and join immediately.

Job Description: Senior Java Developer with Leadership Experience

Position: Lead Developer

Experience: 5-8 Years

Location: Noida

Job Type: Full-time

Overview:

We are seeking a highly skilled and experienced Senior Java Developer to join our dynamic team. The ideal candidate will have a minimum of 5 years of experience in Java development, with a strong focus on leadership and team management. This role requires a proactive individual who can guide others, provide instant solutions, and ensure the successful completion of technical projects.

Key Responsibilities:

• Team Leadership: Lead, mentor, and manage a team of Java developers, fostering a collaborative and productive work environment.
• Project Management: Oversee the planning, execution, and delivery of projects, ensuring they are completed on time and within budget.
• Technical Guidance: Provide expert guidance on Java, JSP, Servlets, Spring Boot, and Hibernate, ensuring best practices and high-quality code standards.
• Problem Solving: Quickly identify, analyze, and resolve technical issues, providing instant and effective solutions.
• Code Review: Conduct regular code reviews to maintain code quality, performance, and security.
• Server Management: Manage server configurations, deployments, and troubleshooting to ensure optimal performance and uptime.
• Collaboration: Work closely with cross-functional teams, including QA, DevOps, and Product Management, to align development activities with business goals.
• Continuous Improvement: Stay updated with the latest industry trends and technologies, and continuously improve development processes and practices.
• Documentation: Ensure comprehensive documentation of all technical specifications, project plans, and procedures.

Qualifications:

• Education: Bachelor’s degree in Computer Science (tier 1/2), Information Technology, or a related field.
• Experience: Minimum of 5 years of hands-on experience in Java development, Minimum 1 year experience in leading Team

Technical Skills:

• Proficiency in Java, JSP, Servlets, Spring Boot, and Hibernate.
• Strong understanding of server-side technologies and server management.
• Experience with version control systems like Git.
• Familiarity with database management systems, particularly SQL.
• Fluency in English
• Leadership Skills: Proven experience in leading and managing development teams.
• Problem-Solving Skills: Strong analytical and problem-solving abilities.
• Communication Skills: Excellent verbal and written communication skills, with the ability to convey complex technical concepts to non-technical stakeholders.

Benefits:

● Provident Fund

Schedule:

● Day shift

● Fixed shift

● Monday to Friday

● Morning shift

Responsibilities :

- Develop server side applications in C++

- Contribute in analysis based on requirements. Analysis can be in the form of research and producing Proof of Concepts.

- Produce documents and specifications wherever required.

- Work collaboratively with other developers and QA engineers to deliver the solutions.

## Please apply if you have experience working on Trading Applications, all others would be automatically rejected ###

Our Core team develops connectivity software for low latency communication with derivatives exchanges all over the world, as well as real-time position and risk limit monitoring. The team's expertise is also relied upon by other C++ development groups to produce high-quality libraries and frameworks for their application development. We have a high degree of freedom and responsibility to produce technologically advanced solutions to demanding real-world problems.

From joining you will have ownership on a diverse set of projects that have a direct impact on trading performance. You will work closely with highly skilled colleagues who share your enthusiasm and deep knowledge of C++, Linux and network protocols, and share your hunger to learn more.

What We Are Looking For

• An experienced Modern C++ developer (C++17/20), with minimum 5 years experience and proficiency with C++ templates.
• A developer, who designs code to push every performance boundary.
• Excellent written and verbal communication skills.
• Ability to solve new and unfamiliar problems quickly and creatively.

• Knowledge of multiple exchanges.
• Ultra low latency design.
• Template metaprogramming.
• Network programming experience.
• Python.

• A great engineering environment whereby technology is key to our success and a C++20 code base.
• Great friendly, informal and highly rewarding culture.
• Fast growing global firm with plenty of opportunities where you will have significant impact.

Job Description

• Architect highly scalable, highly available systems with minimal guidance.
• Developing p2p infrastructure systems to support blockchain interoperability
• Establishing policies and procedures that produce secure, high-quality software
• Write and review technical proposals
• Improve engineering standards, tooling, and processes
• Coding with concurrency, efficiency and scalability as primary motive
• Document systems, build runbooks, and automate those processes
• Being hands on by writing, testing, and deploying high-performance networking code
• Rigor on clean code, unit testing, code coverage and best practices
• Supporting and Leading the team of junior developers

Required qualifications

3+ years of experience in Golang, Strong knowledge of Go programming language, paradigms, constructs, and idioms, willingness to learn on the go, ability to write clean code, a strong sense of responsibility.

Tech Stack

Go, git, linux, bash, ability to work with Docker.

Nice to have

Experience developing in c++, cryptography and system software development experience, understanding of design patterns, understanding of operating systems and networks.

About Clari

Clari uses AI and automation to drive growth and retention for high-performing revenue teams. Clari’s Revenue Operations platform is currently processing over $300 billion in pipeline, and is used by over 50,000 marketing, sales and customer success professionals across 170 countries. Customers include market leaders like Symantec, Adobe, Alteryx, Workday, Lenovo, Zoom, Medallia, Alteryx and hundreds of others.  Clari harvests and analyzes activity signals from dozens of different business systems, including email, calendar, CRM, marketing automation, to shorten sales cycles, increase win rates, and make revenue more predictable. 

The result is passionate and frankly humbling customer loyalty. We consistently hear from our customers how we’ve changed their lives - just check out the reviews on https://www.g2crowd.com/products/clari/reviews">G2 Crowd. It never gets old, and we never take it for granted.

Clari is looking for several key experienced engineering who will focus on implementing many different areas of our solution, including but not limited to our overall web architecture, core application features such as data science driven analytics, user management, content management, social graph integration, personalization, emails, collaboration systems and enterprise content repositories as well as on unstructured data analytics, machine learning and our relevance engine.

Join our core applications team where you’ll work with truly remarkable colleagues on highly diverse, complex, and relevant problems while building scalable applications designed to service millions of mobile and web-based information workers. You’ll work closely with product managers, designers, and others in a cross functional environment on multiple projects, from concept phase through testing, launch and ongoing operations.

We work in an open, collaborative environment and seek exceptional developers who enjoy problem solving and straying outside the routine. You will also contribute to the growth of Clari by being a Brand Ambassador and assist in the hiring of great talent.

Qualifications

• 3+ years of professional server development experience using Java or similar object-oriented language
• Strong understanding of web-based architecture - web servers, load balancing, caching, databases etc.
• Basic knowledge of SQL (Postgres, MySQL) and NoSQL databases (MongoDB)
• Experience developing data driven web applications
• Up-to-date knowledge of latest trends in web application development, including Amazon AWS ecosystem
• Experience building and using RESTful APIs

Nice to Have

• Experience with multi-threading, replication etc. concepts in cloud applications
• Familiarity with large scale business intelligence applications
• Familiarity of JavaScript and other web technologies such as React
•  

Why Clari?

Because we have a big mission, a winning product and an amazing fan base of passionate customers.

We’re changing the world and having a lot of fun on the way. Clari is a fun and fast-growing Silicon Valley company. Clari is one of Inc. Magazine’s best places to work in the US and was named as a 2019 Top Bay Area Workplace for the 5th consecutive year. In October 2019, we closed $60M in Series D funding and are growing at 200%. Our product is a winner - we have perennially been given the highest overall rating in G2 Crowd’s Top 20 Sales Analytics Software. We’re backed by top tier investors including Sequoia Capital, Bain Capital, Sapphire Ventures, Madrona Venture Group and Tenaya Capital, and have a superb and supportive board.

Our team is made up of veteran entrepreneurs, brilliant engineers, and tried-and-true sales professionals who have done this before and want to do it again, this time only bigger.

What’s left to add? You.

Requires a bachelor's degree in area of specialty and experience in the field or in a related area. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals. Performs a variety of tasks. A degree of creativity and latitude is required. Typically reports to a supervisor or manager.

Designs, develops, and implements web-based Java applications to support business requirements. Follows approved life cycle methodologies, creates design documents, and performs program coding and testing. Resolves technical issues through debugging, research, and investigation.

Additional Job Details:

Strong in Java, Spring, Spring Boot, REST and developing MicroServices.

Knowledge or experience , Cassandra preferred

Knowledge or experience on Kafka

Good to have but not must

Good to know:

Reporting tools like Splunk/Grafana

Protobuf

Python/Ruby