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)
Shubham Vishwakarma
Full Stack Developer - Averlon
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Job Title: Mac OS Storage Driver Developer – SCSI
Location: Bangalore
Position Type: Full-time Contract
Shift: Day
Experience: 5 to 8yrs
Key Responsibilities:
• Develop and maintain macOS storage drivers with a focus on SCSI protocols using the DriverKit framework.
• Collaborate with hardware engineers to understand SCSI device specifications and design drivers that seamlessly interface with macOS.
• Implement storage driver functionalities including command handling, data transfer, error recovery, and performance optimizations.
• Debug and troubleshoot driver issues leveraging macOS debugging tools like LLDB and Instruments.
• Ensure driver compliance with Apple’s security, sandboxing, and code signing requirements.
• Develop and maintain test plans, documentation, and quality assurance procedures for storage drivers.
• Participate in code reviews and maintain high code quality and best practices.
• Provide technical support during driver integration, deployment, and production troubleshooting.
Job Requirements:
• A Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or a related discipline.
• Proven expertise in developing macOS storage drivers, specifically SCSI-based drivers using the DriverKit framework.
• Strong proficiency in C/C++ programming; knowledge of Swift or Objective-C is a plus.
• Deep understanding of DriverKit APIs, macOS user-space driver architecture, and IO Kit storage concepts.
• Solid knowledge of SCSI protocols, commands, and storage architecture including RAID.
• Experience with debugging and profiling tools on macOS (LLDB, Instruments, system logs).
• Familiarity with macOS security model, driver sandboxing, and code signing procedures.
• Knowledge of hardware interfaces (PCI, Thunderbolt, USB) relevant to storage devices.
• Excellent problem-solving ability and eLective communication skills.
• Ability to work independently and collaboratively in an Agile environment.
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Python
Machine Learning (ML)Python Developer (Performance Optimization Focus)
Experience: 3–5 Years
Location: Remote (India-based candidates only)
Employment Type: Full-time
Role Overview
We are seeking a Python Developer with a strong focus on performance optimization and system efficiency. In this role, you will identify bottlenecks, enhance system performance, and contribute to building scalable, high-performance applications in a Linux-based environment.
Key Responsibilities
- Analyze and troubleshoot performance bottlenecks in applications and systems
- Optimize code, database queries, and architecture for scalability and speed
- Design, develop, test, and maintain robust Python applications
- Work with large datasets and improve data processing efficiency
- Collaborate with cross-functional teams to improve system reliability and performance
- Monitor system performance and implement proactive improvements
- Write clean, maintainable, and efficient code following best practices
Required Skills & Qualifications
- 3–5 years of hands-on experience in Python development
- Strong expertise in performance tuning and optimization techniques
- Experience with debugging and profiling tools
- Solid understanding of data structures and algorithms
- Experience with REST APIs and backend development
- Strong analytical and problem-solving skills
Linux & System Knowledge (Must-Have)
- Comfortable working in Linux/Unix environments
- Command-line proficiency, including:
- File editing (vi, nano)
- File permissions (chmod, chown)
- File downloads (wget, curl)
- Basic file and directory operations
Basic Python Knowledge (Interview Scope)
- Writing simple scripts and reusable functions
- String manipulation and data handling
- Example task: Count words in a file/string efficiently
Good to Have
- Familiarity with AI/ML concepts or tools
- Experience optimizing data-intensive or distributed systems
- Exposure to cloud platforms (AWS, GCP, Azure)
Why Join Us
- Work on performance-critical systems with real-world impact
- Fully remote work environment
- Opportunity to work with modern, scalable technologies
- Collaborative, growth-focused team culture
About the Role:
We’re looking for a Python Developer to build, optimize, and scale applications that power our trading systems. You’ll work on automation, server clusters, and high-performance infrastructure in a fast-paced, tech-driven environment.
What you’ll do:
- Build and test applications end-to-end.
- Automate workflows with scripts.
- Optimize system performance and reliability.
- Manage code versions and collaborate with peers.
- Work with clusters of 100+ servers.
What we’re looking for:
- Strong Python fundamentals (OOP, data structures, algorithms).
- Experience with Linux commands, Bash scripting.
- Basics of Numpy, Matplotlib, and PostgreSQL.
- Hands-on with automation and scripting tools.
- Problem solver with a focus on scalability & optimization.
Why Dolat?
- Work at the intersection of finance & tech.
- Opportunity to solve complex engineering problems.
- Learn and grow with a team of smart, collaborative engineers.
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XMLYou will be building using C/C++ and related technologies on mainly Windows platforms.
● Manage priorities, deadlines, and deliverables with your technical expertise
● Research solutions and decide the best and practical solution for complex problems
● Lead designs of major product components, and features
● Design, develop, test, maintain and enhance the product
● Analyze issues reported by customers
● Mentor and train team members on design techniques and technologies
Desired Keyskills -
Relevant experience of 4-7 years in C/C++ development on any platform (Linux, Windows, macOS)
● Experience and skills in designing components and modules
● Experience in the mentoring team for technical skills
● Experience in guiding team for technical needs
● Working proficiency and communication skills in verbal and written English
● Experience in XML, STL, Win32 SDK, Dynamic Library / Shared Library, Process, Multithreading, Windows Messages, ATL, COM, HTTP, File I/O, Memory Mapping, API Hooking, and Memory
Management on Windows or Linux platform
● Experience in Windows System Programming
● Experience in debugging and troubleshooting with using tools like Sysinternals Tools, Debuggers / windbg, API Monitoring / Tracing
● Experience in MS Office & Outlook Object Model
● Experience in Cryptography, Data Security, Information Security and Security Technologies
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Go Programming (Golang)
JavaPythonDuration: 6 months with possible extension
Location: Remote
Notice Period: Immediate Joiner Preferred
Experience: 4-6 Years
Requirements:
- B Tech/M Tech in Computer Science or equivalent from a reputed college with a minimum of 4 – 6 years of experience in a Product Development Company
- Sound knowledge and application of algorithms and data structures with space and me complexities
- Strong design skills involving data modeling and low-level class design
- Good knowledge of object-oriented programming and design patterns
- Proficiency in Python, Java, and Golang
- Follow industry coding standards and be responsible for writing maintainable/scalable/efficient code to solve business problems
- Hands-on experience of working with Databases and the Linux/Unix platform
- Follow SDLC in an agile environment and collaborate with multiple cross-functional teams to drive deliveries
- Strong technical aptitude and good knowledge of CS fundamentals
What will you get to do here?
- Coming up with best practices to help the team achieve their technical tasks and continually thrive in improving the technology of the product/team.
- Driving the adoption of best practices & regular Participation in code reviews, design reviews, and architecture discussions.
- Experiment with new & relevant technologies and tools, and drive adoption while measuring yourself on the impact you can create.
- Implementation of long-term technology vision for your team.
- Creating architectures & designs for new solutions around existing/new areas
- Decide on technology & tool choices for your team & be responsible for them.
Experience - 2 to 6 Years
Work Location - Pune
Datametica is looking for talented SQL engineers who would get training & the opportunity to work on Cloud and Big Data Analytics.
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- Strong in SQL development
- Hands-on at least one scripting language - preferably shell scripting
- Development experience in Data warehouse projects
Opportunities:
- Selected candidates will be provided learning opportunities on one or more of the following: Google Cloud, AWS, DevOps Tools, Big Data technologies like Hadoop, Pig, Hive, Spark, Sqoop, Flume, and KafkaWould get a chance to be part of the enterprise-grade implementation of Cloud and Big Data systems
- Will play an active role in setting up the Modern data platform based on Cloud and Big Data
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Go Programming (Golang)
Amazon Web Services (AWS)
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DockerNest is a gamified investment platform for the next-generation and young millennials of the world, to invest, play and earn returns more than a regular savings bank account. The world of gaming is merging with finance to offer a more immersive user experience and help users learn how to manage their money. We’re creating a new breed of asset managers and fin-fluencers with Nest.
We are seeking a dedicated Golang developer to join our growing company.
You will collaborate with other technical staff to deliver and maintain a fully-functional mobile application. We hope you can put your passion for software engineering to work for creating highly immersive user applications.
Your duties will include maintaining code repositories via GitHub and internal server storage modules.
Responsibilities
Below are some of the responsibilities a Golang developer is expected to undertake in their position:
- Implement AWS containers to support Go implementation and successful repository maintenance
- Utilize Kubernetes to ensure successful application development, deployment, and scaling
- Implement Docker for smaller-scale applications that require simpler deployments
- Employ Linux Terminal command structures to allow easy back-end operations for less-expert technical staff
- Structure our user interface with React and ensure REST API access is available for enterprise-grade finance customers on-demand
- Collaborate with other technical staff to ensure consistent and smooth DevOps workflows
- Choose and implement other JavaScript libraries that will optimize performance without sacrificing security and base functionality
- Manage multiple projects within reasonable design specifications and budget restrictions
- QA design for errors
- Implement feedback and changes whenever possible
- Create visualizations that convey accurate messaging for the project.
Job Qualifications and Skill Sets
Bachelor’s degree in computer science, IT, or a related field, such as programming. Other critical skills required are:
- Provable proficiency in Go programming
- Excellent written and verbal communication skills
- Minimum of two years’ experience working in programming or information technology
- Attention to detail and Knowledge in Java is recommended
- Portfolio of work with examples that showcase technical skill
- Strong analytical skills
- Time management and organizational skills
- Knowledge of Go templating, common frameworks, and tools
- Experience working with a team
What you’ll receive
- A compensation competitive to premier firms
- Incredible learning and exposure to every aspect of a funded financial startup as an early member, working directly with the founders.
- Recognition and experience of working on a platform with an exponential user growth curve.
- A fun and receptive work culture which promises to never get mundane!
- If you love party, it is on us!
Java
About Role: You are required to develop & integrate Games.
working on mobile clients for integration of voice and video features
Knowledge of structured development environment with strong logic and OOP fundamentals.
Proficiency with JavaScript and ability to self-learn and work on newer game engines
Knowledge of programming gameplay for multiplayer games.
Candidate should be able to handle end to end delivery of the product.
Candidate should be passionate about gaming.
Candidate must have a positive and problem-solving attitude.
3D projects and knowledge of Mechanism is a must.
Required Skills
- Strong programming in any of these: Unity/C#/C++ / Java
- Experience in Webrtc & Freeswitch project is a must
- Experience supporting all stages of the development lifecycle
- Ability to work in cross platform environments (Android, iOS and Windows)
- Works well both in a team and independently
- Actively seeks to improve skills
About us:
Octro is one of the biggest and fastest growing mobile gaming companies in India founded by Mr. Saurabh Agarwal, a Stanford Alumnus, in 2007.
At Octro Inc, we reimagine games that have been played for generations on mobile platforms. We are a technology organization at heart and take pride in the platforms we create.
We are a venture backed startup with a successful track record of developing and launching innovative and creative mobile / social games targeting Indian players.
Octro was funded by Sequoia in 2014 and has more than 20+ successfully running games including top grossing casino games like Indian Rummy, Teen Patti etc. Octro has more than 80 million + download and 10 million + active users every week. It has offices in Noida and Chandigarh.
A game brand that has captivated and continues to engage millions of players (2 Million + daily active users). The technology platform we have created enables awesome gaming experience for users. Our games scale to massive numbers of online users with great performance.
Our games can be played with your friends and compete with virtual currency.
Our games are amongst the ten top apps earning the most revenues on both Android and Apple's iOS store in India.
Javascript
HTML/CSS
PHP
Git
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Full Stack Developer - Averlon