SDE-2 @ Angel One · Mumbai, India

Hi, I'm Arshil Khan.

I build high-throughput backend systems: real-time market data, data platforms and APIs that serve 500K+ requests/sec. Over 6 years at Angel One and Innovaccer, mostly in Go, Python and Java on AWS.

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arshil@prod: ~

6+ yrsbuilding production systems

500K+peak TPS on Go APIs I built

5×faster stream processing (PySpark → Go)

$10K/moinfra cost saved (Airflow → AWS)

01.

About me

I'm a backend engineer at Angel One, India's third-largest stock broker, where I'm a core member of the Charts team. I work on the systems behind real-time market data and charts: streaming consumers, data workflows and the APIs that serve them.

Before that I was on the Data Platform team at Innovaccer. I migrated legacy healthcare data pipelines for 500+ providers with 100% data integrity, and built a query-conversion tool that translates between database DSLs.

Outside work I build and ship my own products. My Android apps have 200K+ installs, and I'm building DailyJobs.ai, a job-search autofill and tracker. I started out in open source with FOSSASIA and competitive programming at Jamia Millia Islamia.

role: SDE-2, Charts
company: Angel One
location: Mumbai, India
focus: Backend · Distributed systems
languages: Go · Python · Java · C++
education: B.Tech ECE, JMI
email: me@arshilk.com

02.

Where I've worked

Software Development Engineer @ Angel One

Charts Team · Mumbai, India

Feb 2022 — Present

SDE-2 · Apr 2025 — PresentSDE-1 · Feb 2022 — Mar 2025

Core member of the Charts team, designing and building systems for India's third-largest stock broker.
Replaced PySpark consumers with Go, making processing 5× faster and cutting latency for real-time data streams.
Led the migration of hundreds of Airflow workflows to AWS Schedulers, saving ~$10K USD/month in operational cost.
Built REST APIs in Go that serve charts data at a peak of 500K+ TPS.

GoPySparkAirflowAWSREST APIs

Software Development Engineer I @ Innovaccer

Data Platform Team · Noida, India

Jul 2020 — Feb 2022

Core member of the Data Platform team for a leading healthcare data platform.
Led the migration of legacy systems to the new data platform with 100% data integrity and no downtime for 500+ healthcare providers.
Owned the data parsers and Python ETL pipelines, improving data workflows and system efficiency.
Built a Query Conversion Tool that translates queries between database DSLs.

PythonETLData parsersQuery DSLs

Android Developer Intern @ Jan Elaaj Healthcare

New Delhi, India

May 2018 — Jul 2018

Built the Doctor and Patient Android apps from scratch.

Open Source Developer @ FOSSASIA

Singapore · Remote

Sep 2017 — Feb 2018

Contributed to the SUSI AI Android app, an open-source AI personal assistant.

Tech stack

$ languages

GoPythonJavaC++ScalaCNode.jsBash

$ data

PostgreSQLTimescaleDBRedisMongoDBMySQLSnowflakeKafkaApache SparkElasticSearch

$ infra

AWSGCPAzureDockerKubernetesArgoCDGrafanaPrometheusGraylogLinux

$ architecture

MicroservicesSOAEvent streamingREST APIsETL pipelines

$ practices

TDDA/B testingObservabilityAlgorithms & DSGit

$ mobile & web

AndroidReal-time DSPChrome ExtensionsDjango

03.

Things I've built

DailyJobs.ai

Chrome extension · Android · Web

A job-search assistant: it autofills applications on job portals and tracks every application in one place.

Chrome ExtensionAndroidWeb

dailyjobs.ai ↗Play Store ↗

AI Equalizer

Native Android · Audio DSP

An audio enhancement app with 5–31 band equalizers, bass boost, a volume amplifier and real-time DSP (limiter, loudness enhancer). It has presets for 10,000+ headphones and is localized into 50+ languages.

200K+ installs4.7★ from 4K+ reviews100+ countries

Play Store ↗