
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)

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Job Title : Senior Java Developer (Telecom Domain)
Experience : 6 to 10 Years
Location : Nagpur, Maharashtra
Job Summary :
We are looking for a Senior Java Developer with strong experience in the Telecom domain to design and develop enterprise messaging applications.
The ideal candidate should have hands-on expertise in Java, Kannel SMS Gateway, SMPP protocol, and telecom messaging platforms, along with experience building scalable REST APIs and microservices.
Mandatory Skills :
Java 8/11/17, Spring Boot, Spring Framework, Hibernate/JPA, REST APIs, Microservices, Kannel SMS Gateway, SMPP Protocol, Telecom Messaging Platforms, SMSC Integration, SQL, Linux, Git, CI/CD, Telecom Domain Experience.
Key Responsibilities :
- Design, develop, and maintain Java-based enterprise applications.
- Develop and integrate SMS solutions using Kannel SMS Gateway and SMPP.
- Build REST APIs and Microservices using Spring Boot.
- Integrate with SMSCs and telecom messaging platforms.
- Optimize application performance, reliability, and scalability.
- Troubleshoot production issues and collaborate with cross-functional teams.
- Perform code reviews and mentor junior developers.
Required Skills :
- 6 to 10 years of Java development experience.
- Strong expertise in Java 8/11/17, Spring Boot, Spring MVC, Hibernate/JPA.
- Hands-on experience with Kannel SMS Gateway and SMPP protocol.
- Experience with Telecom SMSCs and messaging platforms.
- REST APIs, Microservices, SQL (MySQL/PostgreSQL/Oracle).
- Linux/Unix, Git, CI/CD pipelines.
- Strong debugging and problem-solving skills.
Preferred Skills :
- Kafka, RabbitMQ, or ActiveMQ.
- Docker & Kubernetes.
- AWS, Azure, or GCP.
- Redis and monitoring tools (Grafana, Prometheus, ELK).
- Experience with Agile/Scrum.
Mandatory Requirement :
Candidates must have prior Telecom industry experience with hands-on working knowledge of SMPP, SMSC, and Kannel SMS Gateway. Profiles without Telecom messaging experience will not be considered.
• Job Title:- PHP Developers
• Exp.:- 2-4 years
• Job Type: Full-time
• Office 10 to 7:30pm
Skills:-
• Strong experience with PHP / WordPress / Laravel. Laravel is a must.
• Strong experience with JavaScript / JQuery
• Experience with HTML / CSS
• Experience with MySQL with profiling and query optimization and Linux understanding is a must.
• In depth knowledge of object-oriented PHP and Laravel 5 PHP Framework
• Strong skills in PHP based framework
• Developers with deep knowledge and experience of building WordPress CMS websites, plugins, theme development & customization.
• Experience with MVC, Entity Framework, Webform, Web API, and business layer and front-end technologies Understanding of front-end technologies such as HTML5, CSS3
• Knowledge in AngularJS, NodeJS, MongoDB preferred.
• Solve complex performance problems and architectural challenges.
• Keep abreast of new trends and best practices in web development.
Job Description:
We are looking for a highly skilled Software Developer with 3-5 years of hands-on experience in LAMP Stack development. The ideal candidate will be responsible for developing and maintaining web applications, ensuring high performance, and collaborating with cross-functional teams to define and ship new features.
Key Responsibilities:
• Develop, maintain, and optimize web applications using LAMP Stack (Linux, Apache, MySQL, PHP)
• Design efficient, scalable, and secure backend systems.
• Collaborate with frontend developers and project stakeholders to deliver high-quality products.
• Write well-structured and testable code, following best practices in PHP.
• Troubleshoot, debug, and upgrade existing applications.
• Develop APIs and integrate third-party services.
• Manage and maintain databases using MySQL.
• Perform system and server maintenance on Linux/Unix environments.
• Use Shell scripting to automate routine tasks and deployments.
• Work with the ELK stack (Elasticsearch, Logstash, Kibana) for logging and monitoring.
Qualifications:
• BE/B.Tech in Computer Science/Information Technology/Electronics and Communications
• 3-5 years of proven experience as a Software Developer working with LAMP Stack
• Proficient in PHP, and MySQL.
• Solid experience with Linux/Unix environments, including command-line proficiency.
• Knowledge of Shell Scripting and basic system automation.
• Familiarity with ELK Stack for application monitoring and logging.
• Strong understanding of web protocols, API integration, and database optimization.
• Experience with version control systems like Git.
• Ability to work in an Agile environment and manage multiple tasks efficiently.
Nice to Have:
• Experience with other Python frameworks besides Flask.
• Knowledge of cloud platforms (AWS, Google Cloud) for deploying and scaling applications.
• Familiarity with containerisation technologies like Docker.
Benefits:
• Competitive salary and performance bonuses.
• Medical and insurance coverage.
• Opportunities for professional development and growth.
• Flexible working hours and remote working options.
Core Competency:
• Extensiveexperiencewith C#and ASP.net/.NETCore 2.0 / .NET WebAPI coreframework framework • concepts and fundamentals/ MVC and EF. • REST Web services&API Experience • Strong architectural knowledge with two or more of - MicroServices, 12 FactorApplications and • EventDriven architectures • Messaging knowledge(Topics,Queues&PublishSubscribe) • Knowledge of AWS, Docker and Kubernetes • Experience with databasedevelopmentincluding relational databasedesign,SQL, andORM • Agile Delivery experience • Deploying .Net Core web application/api inWindows and Linux • Experience withweb developmenttechnologiesincludingASP.NET, MVC3, EF, HTML,JavaScript, • JQuery, AJAX and CSS,LINQ. • Experience with core Microsoft.Nettechnologiesincluding:WCF, LINQ, and EF • Experience designing and developing enterprise gradesoftware • Experience with source controlmanagementsystems and deployment environment • Experience with debugging, performanceprofiling and optimization. • Comprehensiveunderstandingof object-orientedand service-oriented applicationdevelopment,techniquesand theories • Internallymotivated, able towork proficientlyboth independently and in a teamenvironment • Strong communication skills with both internal team members and external businessstakeholders • Experience with userinterfacedesign and prototyping
.
Job description
Responsibilities:
Designing and developing user interfaces using C++.
Adapting interface for modern internet/web applications using the latest C/C++.
Having experinced in Linux.
Making complex technical and design decisions for C/C++ projects.
Development using C/C++ latest versions & Linux.
Participate in development from concept to execution to launch and ensure the application fully serves the needs of the end-user
Work with the team to gain an initial understanding of the desired solution, and iteratively
Develop documentation, provide technical assistance and support as required
Technical Key Skills:
A strong fundamental knowledge of C/C++ development
Extensive knowledge in Linux.
Thorough orientation towards Code reviews, Coding standards, Design Standards, and Code Documentation
Knowledge in design patterns
Should have worked on enterprise-class applications
Excellent team player and strong interpersonal communication skills.
WordPress Developer
Pattem digital has opened its door for immediate job Openings For Lead WordPress Developer.
We are watching out for more experienced, motivation and innovation-driven WordPress Developer smeared by sheer delight and excitement to join our fast-growing engineering and development team.
The WordPress Developer would hold the responsibility to design and develop WordPress themes, plugins, and websites.
You would be the voice of many programming languages (HTML5, CSS3, JavaScript and PHP) at Pattem Digital as our WordPress Developer. Being design sensible (Understanding core design principles and industry-oriented practices) is mandatory. They should be able to grapple with all the design, planning, deployment, and development aspects as this would be required for any WordPress Developer Jobs in Bengaluru.
Know Your Work:
- As a Senior WordPress Developer, you will be taking responsibility to develop high performing, highly scalable, customized themes, and plugin apps for WordPress.
- Attention-to-detail with a marathon experience in coding multiple pixel-perfect responsive layouts using Photoshop, Adobe XD files, or Illustrator.
- Deeper roots in web development technologies.
- Collaborate with project managers, designers, and developers to develop aesthetically appealing, user-friendly, and trendy websites and apps.
- Improve your skill sets and to keep an eye on the cutting edge technologies in web development.
- Bring best practices into the picture and eliminate inefficient practices by leveraging our technical workflows.
What You Need To Apply:
- A programming maverick with a minimum of 1-4 years of expert development skills with WordPress, PHP, jQuery, HTML, CSS, and JavaScript as a Lead WordPress Developer.
- A good grasp over PHP objects and classes with a knack over Advanced Custom Fields
- Proficiency with the CSS preprocessors like SASS and command line for streamlined development (Git, Gulp, etc.)
- Knowledge of interacting with RESTful APIs and formats like JSON and XML
- Experience using JavaScript frameworks or libraries such as React, Angular, etc is a plus
- Ability to code without any bluffs
- Known within their team (and elsewhere) for their problem-solving skillset
- Have a hawk eye for UX design
- Self-motivated individual with a goal-driven personality
- Strong communication skills with an inborn (or developed) talent to demystify complex issues and answer all the questions of your fellow developers, designers and management members in a clear manner
What you get:
- Amazing workplace and colleagues in the IT corridor of Bangalore
- Competitive salary at par with the best in the industry
- Immense exposure to new technologies
DeepSource is working on building tools that help developers ship good code. There are over 40 million developers in the world, and all of them write and review code in some form. There’s a massive opportunity to impact how software is built right from where the code is written using automation and intelligence, that not only improves developer productivity but also increases software’s robustness.
The Language Engineering team works on the source code analyzers, including both programming languages and configuration-as-code systems. As a member of the Language Engineering team, you will work on building the best, most comprehensive, Python analyzer in the world. You will add new rules and Autofixes for finding more issues with code and automatically fixing them. You will be involved with the Python community to understand the problems with static analysis tools in the ecosystem.
As a member of the Language Engineering team, you will:
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Identify bad code practices in Python and write new analyzers to detect them.
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Improve the coverage of automatically fixable issues.
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Ensure fewer false positives are reported by the analyzer.
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Work on the internal tools that support analysis runtimes.
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Contribute to open-source static analysis tools.
We’re looking for someone who has:
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Strong foundational knowledge in Computer Science.
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At least 2 years of professional software development experience in Python.
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Understanding of the nuances of execution of the source code (AST, data flow graphs, etc).
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Familiarity with Python best practices followed in the industry.
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Native experience with Linux/Unix environment.
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A focus on delivering high-quality code through strong testing practices.
We offer competitive compensation with meaningful stock options, a generous vacation policy, and a workstation of your choice, to name a few of the perks.
Biddano is seeking for an analytical, result driven, multi-skilled candidate for design for the position of Backend Developer. He/She will be responsible for programming languages and tools to analyze current codes and industry developments, formulate more efficient processes, solve problems and create a more seamless experience for users.
The ideal candidate will have strong personal accountability for results, strong commitment to teamwork in support of the company's success, adherence to ethical business practices, and comfort operating in a start-up environment with an ability to prioritize and drive actions to closure.
a start-up environment with an ability to prioritize and drive actions to closure.
Backend Developer
Responsibilities:
- Participate in the entire application lifecycle, focusing on coding and debugging
- Write clean code to develop functional REST APIs Using Django/Python or NodeJs
- Troubleshoot and debug applications
- Perform unit test cases to optimize performance
- Manage cutting-edge technologies to improve legacy applications
- Collaborate with Front-end developers to integrate user-facing elements with server side logic
- Gather and address technical and design requirements
- Provide training and support to internal teams
- Build reusable code and libraries for future use
- Liaise with developers, designers and system administrators to identify new features
- Follow emerging technologies
Skills Required:
- Proven work experience as a Back-end developer
- In-depth understanding of the entire web development process (design, development and deployment)
- Hands on experience with programming languages like Python (Required), typescript(Required), Java.
- Working knowledge of CMS framework
- Familiarity with back-end languages (e.g. HTML, JavaScript and CSS)
- Excellent analytical and time management skills
- Backend:
- Django/DjangoREST, Python (Prefered) or NodeJs.
- Good experience of microservices.
- Hosting and Deployment Solutions:
- Good understanding of AWS which includes(All required):
- Good expertise in Linux.
- EC2 instance management.
- Scalability (Horizontal or Vertical) which includes autoscaling.
- Proper use of S3 for static file management.
- SNS or AWS email service.
- AWS resource cost optimization.
- Proper knowledge of Load Balancers.
- Teamwork skills with a problem-solving attitude
Experience :
- Minimum 4-7 years of experience as a Backend Developer
- B.tech Computer Science, Engineering or similar relevant field











