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Debojyoti MandalDM
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Debojyoti Mandal

@debojyotimandal

Software Engineer II at Deep Sync building identity and data-delivery systems across cloud platforms.

India
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At Deep Sync, I build identity and data-delivery systems across Java/Spring Boot services, web applications, and large-scale data infrastructure. I shipped an onboarding and data-use-agreement revamp, built secure machine-to-machine authentication, and productized customer data delivery across cloud and data platforms.

At JUSPAY, I improved API latency by 5× and built an internal RAG and Vespa automation framework that reduced enterprise onboarding effort by 90%. Earlier, I optimized AWS infrastructure and supported message-broker migrations at Red Hat, and developed payment APIs at Rupeek that reduced transaction times by 60%.

Experience

Work history, roles, and key accomplishments

Deep Sync logoDS
Current

Software Engineer II

Apr 2026 - Present (7 months)

Senior AI & Full-Stack Engineer on Deep Sync's identity and data-delivery platform, building end-to-end solutions across Java/Spring Boot services, Next.js/React applications, and large-scale data infrastructure powered by Snowflake, Databricks, Spark/EMR, S3, GCS, and AWS.

• Shipped a company-wide onboarding and data-use-agreement revamp spanning three repositories, consolidating a multi-step o

JUSPAY logoJU

Software Engineer

JUSPAY

Feb 2024 - Apr 2026 (2 years 2 months)

• Built and scaled distributed backend services for payment and onboarding workflows, focusing on low-latency APIs, fault tolerance, and horizontal scalability under sustained production traffic.
• Engineered and optimised backend APIs using Haskell and PostgreSQL; achieved a 5× latency improvement through query planning, index tuning, and execution analysis.
• Implemented Keycloak for authenticat

Red Hat logoRH

Software Engineer Trainee

Aug 2023 - Feb 2024 (6 months)

• Restructured AWS S3 storage class with Terraform, saving 55% of the current costs.
• Built Jobs for auto-tag, ACS scanner etc for GitLab CICD pipeline.
• Written Ansible Playbooks for automating launching and configuring AWS EC2 instances, maintaining AMQ (Active Message Queue) for Message Brokers.
• Migrating AMQ6 to AMQ7 for message brokers with no/minimum downtime ensuring message persistenc

Rupeek logoRU

Software Development Engineer Intern

Rupeek

Jan 2023 - Jul 2023 (6 months)

• Developed multiple RESTful APIs (Node.js, Sails.js, Express) in distributed payment systems, reducing transaction times by 60% and increasing throughput by 75%
• Migrated the External Payments feature from the FinOps dashboard to the Backoffice dashboard.
• Integrated new keys & prepared data for the Single Screen CRM feature.
• Worked in Payments & Post-Disbursement Team.

GeeksforGeeks logoGE

Member of Technical Staff & Problem Setter Intern

Dec 2021 - Jan 2023 (1 year 1 month)

• Set more than 100+ Data Structures & Algorithms problems for the hiring contests like Job-a-Thon, Biwizard, etc on the GeeksforGeeks portal.
• Planned & Designed new Computer Science-related courses. Improved 10+ courses with proper research.

NS

Tech Content Intern

Newton School

Jun 2022 - Jul 2022 (1 month)

• Worked on Database Management System and arranged contents from 2 courses in an organized manner.
• Tested and Improved 20+ SQL-related course materials with suggestions and proper research.
• Evolved and made an impactful effect on Storage Management.

KE

Member

KeyGEnCoders

Oct 2020 - Jun 2022 (1 year 8 months)

Volunteered for Teaching DSA (Data Structures & Algorithms) to Juniors.

ST

Problem Setter & Web Development Intern

stemoogle

Jun 2021 - Aug 2021 (2 months)

Developed Course Material on JAVA, OOPS for Kids, aged 10+.

GeeksforGeeks logoGE

Technical Content Writer

Oct 2020 - Apr 2021 (6 months)

Contributed to 75+ Articles on DSA (Data Structures & Algorithms).
Articles Link - https://auth.geeksforgeeks.org/user/jyoti369/articles

Education

Degrees, certifications, and relevant coursework

Kalyani Government Engineering College logoKC

Kalyani Government Engineering College

Bachelor of Technology - BTech, Information Technology

2019 - 2023

MS

Mayureswar High School

Higher Secondary, Science

2017 - 2019

BS

Brahmanbahara High School

Secondary

2011 - 2017

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