Arun Kumar

Software Engineer

Bengaluru, Karnataka, India6 yrs 4 mos experience

Key Highlights

Expert in building scalable backend systems.
Proficient in Golang and Java microservices.
Strong experience in cloud infrastructure and data management.

Stackforce AI infers this person is a Backend-focused Software Engineer with expertise in Fintech and Transportation industries.

Contact

arun.kumar@acko.com LinkedIn

Skills

Core Skills

GolangMicroservicesJavaRest ApisSpring BootPythonSql

Other Skills

API GatewayAlgorithmsAmazon Web Services (AWS)Apache CassandraApache FlinkApache KafkaC (Programming Language)C++CassandraCode ReviewData AnalysisData AnalyticsData StructuresDatabase Management System (DBMS)Dynamic Configuration Service

About

I am a Software Engineer who likes to take on technical challenges and solve them. In my 5 year long professional careers, I have worked on Java and Golang Backend (Microservices, RESTful APIs) in highly scalable systems, handling huge amounts of data and building systems to use data effectively. Caching, stream processing and databases are the other areas I have worked on. Tech stack: Languages: Java, Golang, Python, JavaScript, C++, SQL Databases: MySQL, MongoDB, Postgres, NoSQL Frameworks: SpringBoot, Vert.x, NodeJS, Flask Cache: Redis Streaming processing systems: Apache Kafka, Apache Flink Cloud: GCP, Azure Tools: Visual Studio Code, IntelliJ, Postman, Kubernetes, Git

Experience

6 yrs 4 mos

Total Experience

1 yr 9 mos

Average Tenure

11 mos

Current Experience

Acko

Senior Software Engineer

Jul 2025 – Present · 11 mos · Bengaluru, Karnataka, India · Hybrid

Razorpay

Software Engineer 2

Feb 2023 – Jul 2025 · 2 yrs 5 mos · Bengaluru, Karnataka, India · On-site

Designed and created a Golang microservice
Was incharge of designing the system (LLD and HLD),
Setting up infra for the new microservice including namespaces, load balancer configs etc.
Auth integration with API Gateway/Reverse proxy
DB integration with Dynamic configuration service
Prod pipelines creation
Writing UTs
Various other service integration
Kubernetes configs etc
Designing APIs
Helped out the peer with various tasks.
Integrated the BillMe sms sending mechanism with the Razorpay POS systems for seamless user, merchant experience during a product checkout.
Wrote Java APIs which supports a Dynamic QR code sound box device for accepting payment for UPI transactions.
Helped create a dashboard to monitor the availability of the payment system.
Made critical bug fixes and enhancements to the Razorpay POS systems.
Added more than 25 new alerts to various products across Razorpay PG system including promQL queries.
Debugged and fixed critical on-call issues and P0 incidents which has money loss potential to the org.

GolangMicroservicesAPI GatewayKubernetesJavaPostman+3

Ola

Software Development Engineer

Feb 2022 – Feb 2023 · 1 yr · Bengaluru, Karnataka, India

Developed and owned a new feature which enables
Ola EV users to see their ride statistics and insights
from scratch.
Implemented a new feature - Similar product
recommendation for the Ola Foods division.
Built a micro-services service to interact with external
network vendor APIs.
Technologies used: Java, Spring Boot, Apache
Cassandra, MongoDB, Apache Kafka, Redis, Apache
Flink, Azure ADX etc.

JavaSpring BootApache CassandraMongoDBApache KafkaRedis+1

Tata consultancy services

2 roles

Software Engineer (TCS Digital)

Jul 2020 – Feb 2022 · 1 yr 7 mos

Built a highly efficient multi-processing framework in Python which is serving around 4,00,000 transactions per day from scratch.
Developed a Python service which generates a sequence of Attributes using a proprietary framework.
The service will take JSON files as the input for each customer using specific products, based on a set of
conditions and produces attributes.
Created SQL scripts to run on the Google Cloud BigQuery.

PythonSQLGoogle Cloud BigQuery

Software Engineer Intern

Jan 2020 – Jun 2020 · 5 mos

- Built REST APIs using Python and Flask. The Service catered to HTTP requests and supports CRUD operations. MongoDB was used to store the data. This prototype was built for the software used in a self driving car.

PythonFlaskMongoDB