Open to opportunities

Ashwath NLN

@ashwathnln

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Software engineer specializing in Java, microservices, containerization, and cloud.

India

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What I'm looking for

I seek backend or platform roles where I can build scalable, secure microservices, work with cloud-native tooling, mentor teams, and drive measurable user impact.

I am a software engineer with 4+ years of industry experience building scalable microservices and backend systems using Java, Kotlin, Quarkus, gRPC, and container orchestration. I focus on reliability, transaction security, and high-throughput services that support millions of users and daily transactions.

At Rakuten, I designed and delivered a reusable identity microservice servicing 75+ businesses and handling 1500 QPS for Payments, introduced QR-based authentication to accelerate device onboarding by 40%, and implemented backend logic protecting 5M+ daily transactions. I also played a key role in migrating monoliths to microservices and moving databases from Oracle to MySQL, delivering significant cost savings.

I mentor interns on data integration projects, contributed to services handling peaks up to ~8K QPS, and built canary migration strategies to move 30M users with zero downtime. I seek to apply my expertise in microservices, cloud platforms, and data processing to build resilient, performant systems.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer - II

Current

Rakuten

Jan 2024 - Present (1 year 11 months)

Built a reusable identity microservice in Kotlin/Quarkus with gRPC serving 75+ businesses and 1,500 QPS for Payments; introduced QR-based authentication cutting new-device onboarding time by 40% and improved transaction security protecting 5M+ daily transactions.

Kotlin Quarkus gRPC Microservices Docker Kubernetes Apache Kafka BigQuery Monitoring

Software Engineer - I

Rakuten

Mar 2022 - Dec 2023 (1 year 9 months)

Contributed to a critical microservice handling peak ~8K QPS and implemented canary migration logic to move 30M users with zero downtime; supported system modernization that helped double MAU from 5M to 10M.

Java Kotlin Microservices CI CD Jenkins MySQL Performance Tuning Monitoring

Associate Software Engineer

Rakuten

Jul 2021 - Feb 2022 (7 months)

Worked on resiliency components to raise RPay availability to 99.9% and participated in migrating Payments from a monolith to microservices and Oracle to MySQL, yielding ~250M JPY annual cost savings.

Java Microservices MySQL Oracle Resiliency Docker Kubernetes Cost Optimization

Education

Degrees, certifications, and relevant coursework

PES University

Bachelor of Technology, Computer Science and Engineering

Grade: CGPA: 8.38

Activities and societies: Coursework projects and extracurriculars including badminton and kabaddi competitions.

Bachelor of Technology in Computer Science and Engineering with coursework in Data Structures, Database Management Systems, Operating Systems, Web Technologies, Cloud Computing, Machine Learning and Data Analytics; graduated with a CGPA of 8.38 in 2021.