Headline

SDE 1 - Java BackEnd @ Osfin.ai | Backend Engineering, GoLang

About

I'm a Backend Engineer with 1.5+ years of experience building fintech and high-growth startup systems at Osfin.ai and Vegrow. I specialize in designing scalable microservices, payment/dispute workflows, and data-heavy backend architecture using Java, Spring Boot, and Golang. What I bring to the table: ✔ Built UPI/IMPS alerting that slashed TAT from 25 → 5 mins ✔ Engineered bulk complaint workflows improving ops productivity by 80% ✔ Architected a GoLang + Kafka + MongoDB audit microservice with <2ms query time ✔ Migrated 8000+ customers to an in-house onboarding platform from scratch ✔ Raised unit test coverage from 30% → 80% and automated CI/CD Beyond shipping features, I'm serious about fundamentals — 650+ DSA problems solved and a constant drive to learn what makes systems fast, reliable, and maintainable. Tools & Tech: Java · Spring Boot · Golang · Ruby on Rails · Kafka · MongoDB · MySQL · Oracle · Docker · Jenkins · GitHub Actions Open to backend & full-stack SDE opportunities, technical collaborations, and connecting with fellow engineers building at scale. Let's connect — DM me!

Location

Bengaluru

AI stack

claude code

claude

gemini

hugging face

kimi

opencode

Work experience

SDE 1 - Java BackEnd at Osfin.ai, Jan 2026 - Jul 2026 · 6 mo, Bengaluru, ● Integrated email & SMS alerts for UPI and IMPS to notify customers and beneficiary banks on dispute sync, TAT expiry, and complaint closure — reducing TAT from 25 mins to 5 mins. ● Engineered bulk raise & action workflows for complaints on the existing bulk processor framework, enabling 100s of complaints to be processed in a single operation and improving operational productivity by 80%. ● Designed network support for On-Us Card Withdrawal & Deposit, including dispute handling and complaint workflows, enabling banks to manage On-Us disputes end-to-end.

SDE 1 - FullStack at VEGROW, Jul 2024 - Mar 2025 · 9 mos, Bengaluru, Karnataka, India · Hybrid, ● Engineered audit logging for lot transfers between data centers, capturing SKU details, quantity updates, and inventory changes. Optimized retrieval using the Kafka and GoLang microservice, reducing log fetch time to less than 1 second. ● Successfully migrated over 8000 customers from LeadSquared to an in-house onboarding solution featuring approval workflows, document uploads, mobile televerification, and reactivation processes for deactivated customers, ensuring a streamlined and seamless onboarding experience. ● Implemented task management feature in Ruby using MVC architecture and REST APIs at Vegrow, enabling check-ins, notifications, bulk task uploads, and status updates, boosting employee productivity and accountability by 40%. ● Developed the CreditFlow feature from scratch, enabling customers to request credit with a 5-step approval process, document verification, post-sanction visibility, and real-time Slack notifications, improving financial workflow efficiency. ● Designed the Customer Onboarding feature, enabling activation requests with a 4-step approval process, document uploads, mobile televerification, and reactivation for deactivated customers, ensuring a seamless onboarding experience.

Software Development Engineering Intern at VEGROW, Jan 2024 - Jun 2024 · 6 mos, Bengaluru, Karnataka, India · Hybrid, ● Developed QR-based stock scanning for creating sale orders from outside inventory, reducing redundant scans by 50%. Built using Golang with hexagonal architecture and integrated with a monolithic database, streamlining stock management and improving operational efficiency. ● Increased unit test coverage in a Golang repo from 30% to 80% using Mockery and Testify. Leveraged Generative AI to write test cases and automated the process, improving code reliability and maintainability. ● Automated deployment, replacing manual workflows with CI/CD using GitHub Actions and Jenkins. Added automerge to the staging branch, reducing deployment time by 50% and ensuring faster, more reliable releases. ● Skills Aquired : GoLang, Ruby on Rails, Github, GithubActions, Backend Engineering, Jenkins, ReactJs

Education

Master of Computer Application - MCA (Science), Department of Computer Science (PUCSD), SP Pune University

Bachelor of Computer Application (BCA), Computer Science, Jain (Deemed-to-be University)

Public links

leetcode: https://leetcode.com/sagarpal786t