Purbendu Halder — Software Engineer

A Software Development Engineer at Swiggy, specializing in scalable system design and process optimization for high-performance applications. Experience includes successfully onboarding new events, sourcing data from ClickStream and local caches, and scaling systems to handle over 200k requests per minute. Notable achievements include optimizing SQL queries to reduce redundant throughput by 42.8%, and enhancing system efficiency. At Razorpay, contributions involved automating DevSecOps workflows using Python and CI/CD pipelines, leading to a 95% reduction in manual effort and the efficient management of over 200 JIRA tickets. Real-time tracking for vulnerability management was also implemented, streamlining the issue resolution process. Proficient in programming languages such as C++, Python, SQL, and tools like Docker and AWS. Developed projects that address real-world problems, including a Movie Ticket Booking app with secure authentication, role-based access control, caching, and scheduling capabilities. Academic background includes a Bachelor of Engineering from Jadavpur University (CGPA: 8.12) and a Bachelor of Science in Programming and Data Science from the Indian Institute of Technology, Madras (CGPA: 7.89). Active in competitive programming with high rankings on LeetCode (Guardian, Top 1.15% globally), Codeforces(Expert), and Codechef(4 star). Strong problem-solving skills demonstrated through global competitions like Google Kickstart and TCS Codevita. Open to exploring opportunities that involve solving complex challenges and contributing to impactful projects. Feel free to connect with me to discuss potential collaborations or opportunities. I'm looking for full-time opportunities in Software Development and related fields. Skills/Interests: C++, Python, GoLang, Data Structures and Algorithms, HTML, CSS, JS, SQL, Database Management Systems, Operating Systems, Object Oriented Programming, Problem Solving.

Stackforce AI infers this person is a Backend-heavy Fullstack Engineer in the Food Delivery and Fintech sectors.

Location: Kolkata, West Bengal, India

Experience: 2 yrs 9 mos

Skills

System Design
Sql
Seo
Devsecops
Ci/cd

Career Highlights

Reduced SQL query throughput by 42.8%
Automated DevSecOps workflows, cutting manual effort by 95%
Scaled systems to handle over 200k requests per minute

Work Experience

Swiggy

Software Development Engineer (2 yrs 1 mo)

Jadavpur University

Placement Coordinator (1 yr)

Razorpay

Software Development Engineer (2 mos)

Education

Bachelor of Engineering - BE at Jadavpur University

Bachelor of Science - BSc at Indian Institute of Technology, Madras

Class XII at DAV Public School, Asansol

Class X at DAV Public School, Asansol

Purbendu Halder

Software Engineer

Kolkata, West Bengal, India2 yrs 9 mos experience

Most Likely To Switch

Key Highlights

Reduced SQL query throughput by 42.8%
Automated DevSecOps workflows, cutting manual effort by 95%
Scaled systems to handle over 200k requests per minute

Stackforce AI infers this person is a Backend-heavy Fullstack Engineer in the Food Delivery and Fintech sectors.

Contact

Skills

Core Skills

System DesignSqlSeoDevsecopsCi/cd

Other Skills

AutomationC (Programming Language)Cascading Style Sheets (CSS)CommunicationCompetitive ProgrammingContinuous Integration and Continuous Delivery (CI/CD)Creative Problem SolvingData SourcingDatabasesDockerEngineeringFlaskGithub ActionsGo (Programming Language)HTML

About

Experience

Swiggy

Software Development Engineer

Feb 2024 – Present · 2 yrs 1 mo

1. Led the migration from legacy Dineout to Swiggy Dineout, enabling complete deprecation of dineout.co.in infrastructure. This resulted in $1800+ monthly savings by reducing maintenance costs and operational overhead.
2. Developed backend systems for Partnership, College, and Corporate Rewards, expanding Swiggy’s reach among students and professionals. The program drove 1 M+ registrations within a week, significantly improving engagement, customer retention, and lifetime value through strategic, personalised benefits.
3. Onboarded a couple of new events by sourcing data from ClickStream and local cache (refreshed via a cronjob from S3), scaling the system to handle 200k requests per minute and was responsible for end-to-end testing and deployment of the project, resulting in ∼500 incremental new users a day.
4. Optimised a SQL query, reducing redundant throughput by 42.8% and eliminating 16.3 million unnecessary events per day.
5. Migrated existing Food Pages to Order-Online pages, enabling the hosting of Dineout BL pages across MWeb and DWeb using existing URLs. This boosted SEO traffic through consolidated page relevance and context-rich collection pages tailored for online ordering.
6. Revamped Swiggy’s sitemap architecture, introducing dedicated sitemaps for Instamart and Recipes to improve SEO indexing and crawlability.

SQLSystem DesignProcess OptimizationData SourcingSEO

Jadavpur university

Placement Coordinator

Jul 2023 – Jul 2024 · 1 yr

Razorpay

Software Development Engineer

Jun 2023 – Aug 2023 · 2 mos

Worked in DevSecOps team and did the following projects during my internship
1. Implemented a cronjob using GitHub Actions (CI/CD) to manage End-of-Life (EoL) libraries and Docker images efficiently. The system creates, updates and deletes JIRA tickets for the identified vulnerabilities while providing notifications in Slack and synchronizing the data in S3. This enables efficient monitoring of COTS components and ensures timely handling of issues through the JIRA ticketing system.
2. Implemented a cronjob to handle the active issues from Pingsafe, and integrated it with Razorpay’s internal vulnerability management tool(opinionated version of DefectDojo) and JIRA, enabling real-time tracking, creation, updation, and deletion of corresponding JIRA tickets enabling it as a centralized vulnerability management solution, ensuring prompt issue assignment and resolution.
3. Created a Slack bot and integrated it with ChatGPT and neo4j database to access Security-Cartography data across the organisation in an efficient and user-friendly manner.

PythonCI/CDDevSecOpsJIRASlack