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Girjesh User
@girjeshuser
Backend engineer focused on distributed, high-scale systems that cut latency and ensure data correctness.
IndiaWhat I'm looking for
I’m a Backend Engineer (IIT Delhi) specializing in distributed and high-scale architectures, with a track record of reducing latency, securing data correctness, and handling high workloads with strong ownership. I’ve driven measurable performance wins, including reducing API P99 latency from 60s to 800ms by replacing batch processing on 50M+ rows with an event-driven aggregation system that eliminated dashboard outages and enabled real-time analytics.
I also build correctness-first transactional systems—like a mutation engine that supports order modifications mid-fulfillment using ACID consistency across 100k orders/10M+ lines per day, preventing over/under-shipment and inventory mismatches. Earlier, I led a production migration across 20+ services from AWS to Azure with <30 min downtime and zero data loss, eliminated duplicate writes at 20k RPS using Redis-based user-scoped locking with idempotency safeguards, and repaired system-wide data inconsistencies by redesigning the event pipeline; I’ve also reduced infrastructure costs to 50% by moving to self-hosted Redis and RabbitMQ while maintaining durability and automated failure recovery.
Experience
Work history, roles, and key accomplishments
SL
Senior Software Engineer
Stackbox Services Pvt Ltd
Jul 2025 - Feb 2026 (7 months)
Reduced API p99 latency from 60s to 800ms by replacing batch processing over 50M+ rows with an event-driven aggregation system, eliminating dashboard outages and enabling real-time analytics. Built an ACID-consistent transactional mutation engine for order modifications across 100k orders/10M+ lines per day, preventing over/under-shipment and inventory mismatches.
SL
Software Engineer
Stackbox Services Pvt Ltd
May 2024 - Jun 2025 (1 year 1 month)
Increased warehouse throughput by 20% by replacing fixed processing logic with a configurable, ops-driven workflow for inventory aggregation, reducing manual overhead while processing 10M+ order lines daily. Prevented inventory mismatches by identifying and fixing critical flaws in allocation invariants and processing order, eliminating unused/expired inventory and reducing financial loss.
GL
Backend Developer
Green Freedom Pvt Ltd
Nov 2022 - Apr 2024 (1 year 5 months)
Led migration of a production system across 20+ services and TBs of data from AWS to Azure with <30 minutes downtime, zero data loss, and seamless cutover for 4M users and 150k DAU. Eliminated duplicate writes at 20k RPS using Redis-based user-scoped locking and idempotency safeguards, restored correctness by redesigning an event pipeline to remove floating-point precision drift, and reduced infra
SL
Backend Developer Intern
Slated.ai
Jun 2022 - Oct 2022 (4 months)
Automated extraction of LinkedIn/GitHub profiles by building a Node.js-based OCR-powered web scraper. Implemented speaker diarization, speaker attribution on meeting transcripts, and structured audio analysis with 98% accuracy using the NVIDIA Riva ASR model.
Education
Degrees, certifications, and relevant coursework
Indian Institute of Technology Delhi
Bachelor of Technology, Mathematics and Computing
2018 - 2022
B.Tech. in Mathematics and Computing at IIT Delhi (2018–2022).
Availability
Looking for a job
Location
IndiaAuthorized to work in
Salary expectations
4000k-5000k USD
Job categories
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