Rajendra Kumar

Senior Software Engineer

Gurugram, Haryana, India8 yrs 11 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

4 years of experience in Java and Spring technologies.
Expert in building scalable SaaS applications.
Strong leadership and project management skills.

Stackforce AI infers this person is a Backend-heavy SaaS Developer with expertise in Java and Spring frameworks.

Contact

Skills

Core Skills

JavaSpring BootMongodbSpring ReactiveKafkaSpring Framework

Other Skills

RESTCron SchedulerMulti-threadingLoad BalancingApache KafkaResearchProject ManagementShell ScriptingMicrosoft ExcelMicrosoft WordMicrosoft PowerPointSQLHibernateGitMaven

About

Java & Spring framework developer having 4 years of experience in back end technologies with diverse experience in Java 8, Spring Boot, Spring Reactive, Mongo DB, Restful Web Services, KAFKA and MySQL. A learning enthusiast, with passion to explore and solve complex business problems. Collaborative, team player with zeal to lead and achieve the organisational goals.

Experience

8 yrs 11 mos

Total Experience

3 yrs 2 mos

Average Tenure

4 yrs 3 mos

Current Experience

Oracle

Senior Member of Technical Staff

Mar 2022 – Present · 4 yrs 2 mos · Bengaluru, Karnataka, India

Airtel x labs

Senior Software Engineer

Nov 2019 – Oct 2022 · 2 yrs 11 mos · Gurugram, Haryana, India

SUBSCRIPTION MANAGEMENT SERVICE
Objective
Manage subscription lifecycle of SaaS products at Airtel for both manual and automatic mode of renewal.
Send reminders, deduct payment and renew/cancel subscription on scheduled dates throughout tenure.
Implementation
Implemented batch processing and employed DB locking to enable bulk data processing in distributed system.
Ensured highly configurable application to support new SaaS product subscription journey with minimal effort.
Used MongoDB to store data, Cron Scheduler to schedule task, Java 8 for implementation.
AUTO PAY SYSTEM
Designed (HLD and LLD) auto-pay model to remove customers’ overhead of manually paying for service renewal.
Developed Payments Service to handle all payment related activities such as debiting money, updating status etc.
Used Orchestration System to process multiple steps at renewal such as debiting payment, billing and notification.
Followed Event-Driven Architecture to take benefit of asynchronous processing needed in multi-step order journey.
PROVISION MANAGER
Micro Service to interact with different SaaS providers to create and provision Airtel customers’ subscriptions.
Implemented idempotent CRUD operations and integrated with OMS (Order Manager Service) for customer request.
Used Spring Reactive, REST using Web-Client for asynchronous non-blocking API calls to service providers and KAFKA for asynchronous interactions with OMS.

JavaMongoDBSpring ReactiveKAFKARESTCron Scheduler+1

Citi

Assistant Manager

Jul 2017 – Nov 2019 · 2 yrs 4 mos · Pune Area, India

FRAMEWORK DESIGN OF REPORTS GENERATION
The framework triggers requests at scheduled time (daily, weekly, intraday) to create customized
report
Used the concept of load balancing to distribute incoming requests to 5 different nodes
Employed multi-threading to process multiple report requests at each node in parallel
MESSAGE REPLAY UTILITY
Responsible for development of a web application based on spring framework (Spring Boot 2)
that fetches Kafka messages using offset id and has the functionality to send it to different
destinations (Kafka Topic / JMS Queue / DB)
RULE ENGINE IN JAVA SPRING
Designed a custom rule engine to do validations and enrichment for incoming cross-border
payment files
Documented business rules and analyzed performance of the rules to see if they would meet
business needs

Spring BootKafkaMulti-threadingLoad BalancingJavaSpring Framework

Pariksha

Summer Internship

May 2016 – Jul 2016 · 2 mos · Pune Area, India

Provided comprehensive solutions to problems having extensive application of Data structure
& Algorithm
Solved Programming questions using C, C++ and uploaded it on the website using LaTeX, HTML
and CSS