Rakuten Symphony - Senior Backend Developer - Java/J2EE Platform

Job Description :

Role : Senior Developer (Backend)

KEY RESPONSIBILITIES :

- Review and provide feedback on HLD and LLD documents

- Help breakdown high-level development-tasks to granular tasks and estimate efforts

- Write, review and maintain high-quality code, peer-review of code and documents

- Research, keep up pace with evolving technologies and improve code

- Proactively report improvement areas in existing and new code/application/framework

- Integrate software components/products as per the need of the design/solution

- Develop clean, readable, well-commented code

- Contribute to review and enrichment of Test Plans/Test Cases

- Contribute to triage meetings, understand and balance work priorities

- Work closely with other stakeholders, such as team leads, designer/architect, product and project managers, graphic artists, UX/UI designers, other developers, QA team, operations and support teams, system analysts, business analysts and sales and marketing professionals

- Responsible for other aspects of application like performance, security etc.

- Work towards keeping the product free of technical debt

Skills required :

- Understanding of Telecom Order Management and Service Activation solutions

- Good understanding of Business Process Management Business Process modelling, Workflow creation and maintenance

- Experience in a software-as-a-service application built on a modern platform with state-of-the-art open-source technologies

- Understanding of Number Management and/or Number / Resource Inventory solutions

- Software expert with experience in Java, JavaScript and J2EE

- Experience architecting large-scale, multi-threaded, distributed high-availability applications, and fast prototyping

- Knowledge of containerization and orchestration technologies and hands-on knowledge with any one or more of the following: Google Anthos, Azure, AWS, or other Hybrid Cloud technologies

- Good understanding of Mobile Network architecture covering 4G, 5G, OTA, Device Management, and various VAS services

- Operating with the highest levels of honesty, integrity, and fidelity, acting in the best interest of the business

- Strong capability and openness towards up-skilling and re-skilling, with a curious mind and desire to constantly learn and grow

- Good written and verbal communication skills (English)

- Ability to take initiative, work well under pressure, and work towards strategic business goals with attention to detail and multi-tasking skills

- Self-starter able to work independently but comfortable and effective working in a team environment

- Experience in OSS/BSS/Telecom/Order Management system is a must have

MUST-HAVE SKILLS :

- Ability to review LLD and provide feedback and raise clarifications

- Experience of developing code from LLD and HLD, independently

- Experienced in design review and feedback, development, unit-testing, build-automation

- Good experience with RESTful API (Swagger, JSON) implementation and optimization

- Good experience with SOAP API (XML, XSD, WSDL) web service implementation

- Practical knowledge and implementation experience of Microservice Architecture

- Hands-on with Spring Boot, Spring Security, Spring Data, Spring MVC

- Unit Testing coding, review, execution, code-coverage maximization

- RDBMS (MySQL/PostgresSQL) - design, normalization, indexing, optimization, federation, partition, replication (master-slave, group replication), triggers, stored procedures, Apache ActiveMQ/RabbitMQ, any other JMS implementation, Hibernate, Arjuna (JTA - JBoss Transactions API)

- Public Key Infrastructure (PKI), Java Cryptography (JKS), PSK and Certificate based authentication

- Performance analysis and application tuning

- Hands on experience with Kubernetes, Helm Charts, Docker/Dockerfile/Docker Compose, Swagger, Git, Maven, Jenkins, JIRA

- Excellent command on debuggers

- Ability to handle critical priority and time sensitive production defects

- Linux essentials ability to work with bash shell, command line tools like vi, grep, find, curl, wget, ssh, scp, ctags etc.

Good to have skills :

- NoSQL, Infinispan (in-memory distributed data-grid)

- Liquibase, WildFly App Server, SmallRye, XNIO

- Ability to write simple bash/python/perl scripts

- OpenSSL and related tools

- AWS/EKS/GCP

- SoapUI, Postman for API testing/simulation

- OWASP guidelines

QUALIFICATION REQUIREMENTS :

- Experience in the development and testing of real-time, distributed, high-availability systems/applications

- Hands-on development experience in Java and related technologies