IVR Engineer - Asterisk/CTADE Developer

About the job

As a Senior SIP Engineer, you must take complete ownership of supporting all VoIP infrastructure, debugging issues related to specific servers or software, or remote clients such as SIP devices (both virtual such as soft-phone or WebRTC client, and physical such as a desk phone or an on-premise PBX), and providing fixes.

• Support customers during EST timezone during critical releases or emergency incidents 5+ yrs of supporting global VoIP services and/or applications on cloud-based servers.
• Expertise in SIP call flow analysis and debugging Expertise in setup and maintaining SIP-based monitoring, debugging, and alerting services
• Experience scripting call flow, dialplan, and custom routing with FreeSwitch using LUA and XML
• Experience in debugging Kamailio and Freeswitch-based applications is a must Good problem-solving and analytical skills Excellent written and verbal communication
• Experience working with open-source projects
• Exposure to SIP Carrier Integration
• Advanced Experience with cloud media infrastructure (load balancers, gateways, SBCs, STUN, TURN)
• Advanced Knowledge of all modern VoIP protocols/platforms including (SIP, RTP stack & SDP, RTCP, TCP, UDP, SIP, HTTPS, SSL/TLS)

Technical Requirement:

• At least 5 years of experience in Java, J2EE technologies.
• Expertise in doing development using Java, Spring Boot, Spring modules (Spring Security, Spring MVC, Spring Data JPA, etc.), Hibernate, Web Services
• Worked on REST web services.
• Worked on application server : Tomcat
• Worked on Eclipse IDE
• Knowledge of Swagger, Postman
• Worked on Database like MySQL
• Worked on Git, Maven, CI/CD pipelines
• Good to have knowledge of using Docker and Mongo DB

Key Responsibilities:   

• Should have hands-on experience with Java   

• Strong experience in Spring Boot, Micro Services   

• Should be well versed with Agile Development methodologies   

• Should have strong debugging and communication skill   

• Should participate in design discussions and provide application designs, architecture, timeline estimations   

• Problem-solving mind and attitude   

• Ability to interface well with externally facing departments and directly with customers   

• Effective communication skills – written, spoken, listening, and presentation   

• Great Team player and experience working with global teams and global organizations Genuine interest in learning and knowledge sharing   

Primary Skills:   

• 2 years of Spring Boot and Microservices.   

• 3+ years of experience in Core Java.   

• Proficiency with Spring Framework.   

• Innovate new approaches algorithms, libraries, tools, platforms, for relevant development areas   

• Strong programming skills in Core JAVA / J2EE expert level   

• Good at data structures, algorithms, problem-solving, and design patterns   

• Knowledge of Web Services, Spring, ORM Frameworks, Spring Boot, Spring Cloud Gateway, OAuth2.0, Spring Security, JWT, Eureka, Hystrix, Apache Cassandra   

• Should be well familiar with SQL/NO-SQL database   

• Knowledge of Spring Batch, Kubernetes, Docker is a plus point    

Responsibilities

• Understand existing business operations tool used by customer support and business teams.
• Work with Engineering Manager to upgrade the system to improve system stability and response times.
• Independently lead design and implement new features as per business requirements provided by Product Management team.
• Develop elegant, modular and maintainable solutions. Document all design, operations steps for knowledge sharing purposes.
• Guide junior team members on feature implementation and provide relevant training on existing modules.

Must-know Technologies

• Java EE
• Java Server Facelets (JSF)
• Java Persistence API (JPA), Hibernate
• SQL
• HTML, CSS, JavaScript
• Payara/GlassFish/similar application server environments

Preferred Skills

• 2-8 years of overall experience in software design and development.
• Ability to analyze existing application, implement new features and re-architect the application in case of inefficiencies.
• Strong object-oriented skills and ability to apply design patterns.
• Experience mentoring junior engineers on development, code review, project planning.

Job Description:

• Must have experience of 1 – 6 years.
• Experience in Java/J2EE platform.
• Experience in web application development with JSP, Servlet, Spring Boot, Hibernate
• Knowledge of MySQL database.
• Developed REST and SOAP web services..
• Experience in version control system and build tool
• Must have completed BE/MCA/M.Sc/MTech.

Primary responsibilities:

• Architect, Design and Build high performance Search systems for personalization, optimization, and targeting
• Designing systems with Solr, Akka, Cassandra, Kafka
• Algorithmic development with primary focus Machine Learning
• Working with rapid and innovative development methodologies like: Kanban, Continuous Integration and Daily deployments
• Participation in design and code reviews and recommend improvements
• Unit testing with JUnit, Performance testing and tuning
• Coordination with internal and external teams
• Mentoring junior engineers
• Participate in Product roadmap and Prioritization discussions and decisions
• Evangelize the solution with Professional services and Customer Success teams

Minimum requirements:

• Tech/M.Tech in computer Engineering or related fields or MCA
• At least 10-14 years of software development experience
• Expert in Java, Scala or any other object oriented language
• Proficient in SQL concepts (HiveQL or Postgres a plus)
• Additional language skills for scripting and rapid application development

Desired skills and experience:

• Working with large data sets in the PBs
• Familiarity with UNIX (systems skills a plus)
• Working experience in Solr, Cassandra, and Kafka
• Working in a distributed environment and has dealt with challenges around scaling and performance
• Working with distributed teams across multiple locations