Bittu Kumar Ray profile photo 1 on Tal

Bittu Kumar Ray

SDE-2 @ SquadStack | Backend & Distributed Systems Engineer | Python, Django, Golang | Scalable & High-Performance Systems | PostgreSQL, Redis, Elasticsearch | AWS, Microservices | Ex-Zopsmart, Innovaccer

Noida

6+ years of work experience

SquadStack
Jan 20242 yrs 10 mosPresent

On-site

• Designed and built an internal multi-LLM chat platform from scratch for employees, integrating Gemini, Claude, and OpenAI, with strict zero-data-retention enforced on all third-party providers. • Designed and implemented a queue-based task distribution system by partitioning the main table, enabling scalability, optimized performance, and efficient workload handling. • Improved task processing performance by implementing an efficient queueing mechanism, replacing synchronous PostgreSQL inserts with asynchronous bulk insertion. • Built a continuous archival system to free up storage and ensure efficient data retention. • Integrated the archival system with ClickHouse, enabling users to query archived data for seamless analytics. • Upgraded Django from 2.28 to 3.2.25 and again from 3.2.25 to 4.2.16 version and that too without any major issue in the production. • Spearheaded disaster recovery planning and successfully designed and implemented the infrastructure for the root AWS account, ensuring robust data protection and business continuity.
SquadStack
Aug 20212 yrs 6 mosJan 2024

Hybrid

• Designed and implemented the deployment from scratch, transitioning from manual to auto-scaling infrastructure, resulting in a 50% reduction in deployment time and significant cost savings. • Built a cost-efficient, end-to-end data science model pipeline from scratch, serving as the foundation for every data science model pipeline. • Improved the script editor, reducing page load time by 90%, enhancing user experience.. • Handled five on-calls, 15 days each, overseeing org-wide urgent issues, ensuring instant solutions without SLAs breach. • Made data searchable by substring without impacting performance using Elasticsearch.
ZopSmart
Jan 20216 mosJun 2021

Bengaluru, Karnataka, India

Innovaccer
May 20203 mosJul 2020

Designed and developed a central server where individuals can navigate through their assigned tasks from various services like Google Sheets, Google Slides, Google Docs, Hubspot, Jira, and Confluence, and can mark them as done. Integrated various APIs including Jira, Hubspot, Confluence, Gsuite products, Google Task, Google Chat, etc.
Indian Institute of Information Technology, SriCity
Aug 20195 mosDec 2019

I assisted the professor in taking Discrete Maths and Probability Theory Classes for UG-1 students.
MyPustak.com
May 20193 mosJul 2019

Kolkata Area, India

Managed the whole website including the database. Built multiple APIs for the existing Django app and integrated them into the frontend. Found a loophole in the authentication and fixed that.
GitHub
@raybittuiq
LeetCode
@bitturay

Bittu’s AI Stack

claude code
claude code
claude
claude
codex
codex
cursor
cursor
gemini
gemini
OpenRouter
OpenRouter

Education

Indian Institute of Information Technology, SriCity

Bachelor of Technology, Computer Engineering

Indian Institute of Information Technology, SriCity

20174 yrs2021

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Headline

SDE-2 @ SquadStack | Backend & Distributed Systems Engineer | Python, Django, Golang | Scalable & High-Performance Systems | PostgreSQL, Redis, Elasticsearch | AWS, Microservices | Ex-Zopsmart, Innovaccer

About

Backend Engineer with 4+ years of experience building scalable, reliable, and high-performance systems. Experienced in designing distributed systems, backend services, and data-intensive applications using Python, Django and Golang. Strong foundation in Data Structures, Algorithms, and System Design, with hands-on experience in optimizing large-scale systems and database performance. Skilled in PostgreSQL, Redis, Elasticsearch, and ClickHouse, focusing on low-latency and efficient data handling. Proficient in cloud and infrastructure engineering using AWS, Docker, Terraform, and Nginx, with experience in asynchronous processing and messaging systems like Celery and RabbitMQ. Proficient in monitoring and observability using tools like Grafana, ELK stack, and modern logging/APM systems. I enjoy solving complex engineering problems and building systems that are reliable, scalable, and cost-efficient.

Location

Noida

AI stack

claude code

claude

codex

cursor

gemini

OpenRouter

Work experience

Software Development Engineer 2 at SquadStack, Jan 2024 - Present · 2 yrs 10 mos, On-site, • Designed and built an internal multi-LLM chat platform from scratch for employees, integrating Gemini, Claude, and OpenAI, with strict zero-data-retention enforced on all third-party providers. • Designed and implemented a queue-based task distribution system by partitioning the main table, enabling scalability, optimized performance, and efficient workload handling. • Improved task processing performance by implementing an efficient queueing mechanism, replacing synchronous PostgreSQL inserts with asynchronous bulk insertion. • Built a continuous archival system to free up storage and ensure efficient data retention. • Integrated the archival system with ClickHouse, enabling users to query archived data for seamless analytics. • Upgraded Django from 2.28 to 3.2.25 and again from 3.2.25 to 4.2.16 version and that too without any major issue in the production. • Spearheaded disaster recovery planning and successfully designed and implemented the infrastructure for the root AWS account, ensuring robust data protection and business continuity.

Software Development Engineer 1 at SquadStack, Aug 2021 - Jan 2024 · 2 yrs 6 mos, Hybrid, • Designed and implemented the deployment from scratch, transitioning from manual to auto-scaling infrastructure, resulting in a 50% reduction in deployment time and significant cost savings. • Built a cost-efficient, end-to-end data science model pipeline from scratch, serving as the foundation for every data science model pipeline. • Improved the script editor, reducing page load time by 90%, enhancing user experience.. • Handled five on-calls, 15 days each, overseeing org-wide urgent issues, ensuring instant solutions without SLAs breach. • Made data searchable by substring without impacting performance using Elasticsearch.

Software Development Engineering Intern at ZopSmart, Jan 2021 - Jun 2021 · 6 mos, Bengaluru, Karnataka, India

Software Development Engineering Intern at Innovaccer, May 2020 - Jul 2020 · 3 mos, Designed and developed a central server where individuals can navigate through their assigned tasks from various services like Google Sheets, Google Slides, Google Docs, Hubspot, Jira, and Confluence, and can mark them as done. Integrated various APIs including Jira, Hubspot, Confluence, Gsuite products, Google Task, Google Chat, etc.

Teaching Assistant at Indian Institute of Information Technology, SriCity, Aug 2019 - Dec 2019 · 5 mos, I assisted the professor in taking Discrete Maths and Probability Theory Classes for UG-1 students.

Backend Developer Intern at MyPustak.com, May 2019 - Jul 2019 · 3 mos, Kolkata Area, India, Managed the whole website including the database. Built multiple APIs for the existing Django app and integrated them into the frontend. Found a loophole in the authentication and fixed that.

Education

Bachelor of Technology, Computer Engineering, Indian Institute of Information Technology, SriCity

Public links

github: https://github.com/raybittuiq

leetcode: https://leetcode.com/bitturay