Hi, I’m Devesh—a Data Science Analyst at Citi India, working with the Data and Analytics team to deliver scalable data transformation solutions. I hold a B.Tech in Mathematics and Computer Science from Delhi Technological University (DTU), with expertise in algorithms, data structures, distributed systems, and backend engineering. My experience includes building robust ETL pipelines, optimizing data loading, and implementing automated validation frameworks using Python, PySpark, Hadoop, and SQL. I am passionate about data engineering, backend development, and solving complex data challenges at scale. Certified in Applied Machine Learning, ML Foundations, and Competitive Programming. Skills: Data Science, Data Engineering, Backend Development, Python, PySpark, Hadoop, SQL, ETL, Distributed Systems, Algorithms, Data Structures, Machine Learning, Analytics, Portfolio, Software Developer, Technology Analyst, Coding, Problem Solving, Clean Code, Creative, Corporate, Personal Portfolio, Minimal, One Page, Parallax, Blog, Branding, Web Development, Competitive Coding, Graphic Design, Android Development, Music Production, Video Editing, Adobe Photoshop, Illustrator, After Effects, Linux, Node.js, React.js, Bootstrap, GitHub, Hackerrank, YouTube, Facebook, Instagram.

About Me.

Graduated from Delhi technological University (formerly DCE).
A Tech geek,Data scientist, Coder, Developer, Music Producer, writer, Designer and Much More!

Namaste ! I am Devesh a Btech graduate from Delhi Technological University in Mathematics and Computing currently working at Citi India as Technology Analyst. A tech geek who is in with coding, developing and creating crazy stuff.Feel free to look around and if you like it get in touch.

Skills

Skills

Learn as if you were to live forever.

Web Development


90%

Competitive Coding


85%

Graphic Designing


95%

Android Development


70%

Machine Learning


60%
Technical Skills See My Projects

Image Portal

"It's not hard to write when your hand is led by your heart. My writings and my graphic designs are Available on Devweb-Imageportal."

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Technical Skills.

Technical skill is mastery of complexity, while creativity is mastery of simplicity.

Big Data & Cloud

PySpark, Hadoop, Apache Spark, Hive
Snowflake, Iceberg, AWS (S3, Lambda, SES)
GCP (BigQuery), Kafka, Airflow, Docker, Jenkins

Coding & Development

Python, SQL, C++17, Java, JavaScript
MERN Stack, REST APIs, Firebase, React
Git, MongoDB, TensorFlow, Tableau, Power BI
See my projects at GitHub or my profile at HackerRank

Leadership & Accomplishments

Competitive Programming (Hackerrank 5★, Codeforces Specialist)
Citi’s Director Hall of Fame (Top 30 globally)
“Code Samurai” Award for 55K+ production code lines
Headed graphic design teams at IGTS & Yuvaan (DTU Lit Fest)

Projects

Projects & Experiences

  • Data Science Intermd Analyst - Citibank (C11)

    Jan 2025 - Present

    Rewriting SAS models to optimized PySpark models, cutting runtime and costs. Led data standardization efforts in mortgage risk and finance domain.

  • Data Science Analyst - Citibank (C10)

    July 2022 - Dec 2024

    Built static and dynamic macro models, optimized pipelines cutting SLA by 40%. Implemented automation, controls, and Spark retry mechanisms.

  • Technology Analyst - Citibank

    July 2021 - July 2022

    Worked on PySpark, Hadoop, Hive building a data standardization framework and ETLS improvements reducing runtime by 20%.

  • Software Developer Intern - EnrichAi

    May 2020 - July 2020

    Developed IoT solutions using Cumulocity, Angular, AWS Lambda. Designed enterprise-level website features.

  • Full Stack Developer Intern - Citrusberry Pvt Ltd

    June 2019 - July 2019

    Developed B2B e-commerce solutions, dynamic catalog system, and automation chatbot using MERN stack.

  • Website & App Developer Intern - Muffito Inc

    July 2018 - Sept 2018

    Built a web app for local pub search and improved search system filters using Firebase and Node.js.

  • Impact of COVID-19 on Global Economy & Financial Markets

    2020 - 2021

    Researched pandemic impact on global economy slowdown. Published and presented findings at ICBDICSIT conference.

  • Kashur (IIT Delhi funded startup)

    2019

    Developed ecosystem for reading, writing, and sharing original ideas using MEAN stack.

  • DevWeb V1 & V2

    2017 - 2018

    Built static portfolio websites using HTML, CSS, JavaScript, Bootstrap, and JS libraries.

  • Mini Projects

    Ongoing

    Reconciliation framework, Market price UI, Auto spark retry mechanism, Config generator.

Are you on pc?
EASTER EGG ALERT.

Try typing any of these words.

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Portfolio.

Make each day your masterpiece.

  • All
  • Web Design
  • Logo Design
  • Visual Design
  • Mobile App Design
  • Music
website design
website design
Music Poster
Project Name
Project Name
Christmas Design
Contact me

Bored?

"Watch a cat."

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Let's Get In Touch!

Ready to start your next project with me? That's great!Meet,Discuss or just say Hello.
Send me an email and I will get back to you as soon as possible!

Youtube

Hackerrank

GitHub

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Facebook

Instagram