Open to Senior Backend roles
Backend Engineer · Bengaluru, IN

Aishit Dua

Security, scale & distributed systems.

5+ years building high-throughput, security-critical systems. Fraud detection engines, distributed authorization frameworks, and data pipelines handling millions of daily transactions at Branch International and Apple.

5+
Years experience
~40%
ATO reduction
50M+
Daily records
Get in touch → View work
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01

Selected experience

Branch International
Sep 2023 — Present
Bengaluru, IN
Backend Engineer
  • Engineered a New Device Login system with device fingerprinting and token rotation — reduced account takeovers ~40% across 1M+ active users, driving ~$500/week in fraud loss reduction.
  • Architected a configurable Fraud Detection Framework with rule-engine + real-time scoring across 4 signal feeds; cut false-positive rate 25%.
  • Delivered a full-stack RBAC system consolidating 12 permission models; reduced access-request resolution from 3 days to 4 hours.
  • Built a Maker-Checker approval framework enforced across 13 critical admin workflows; adopted by 3 additional teams within 6 months.
  • Built end-to-end PII Tag Governance system masking 41 recurring fields with RBI audit compliance and Slack alerting.
  • Prevented ~3k unauthorized debit transactions/week via Post-No-Debit enforcement across Nigeria wallet flows.
Apple
May 2021 — Aug 2023
Hyderabad, IN · Contractor
Software Development Engineer
  • Built automated data-quality monitoring pipeline for Maps Data Engineering — cut validation time 487% across 50M+ daily records.
  • Designed a relevance-ranking feature for data attributes; increased downstream team throughput 50% and improved Maps POI accuracy.
  • Lifted SLA compliance from 91% to 98.5% via automation scripts in the ingestion toolchain, reducing manual pipeline interventions ~60%.
Stride.AI
May — Dec 2020
Remote · Intern
Software Engineer Intern
  • ML table-extraction pipeline across ~5k files with +20% efficiency; Node.js data-mining tool at 50k records/day; Python ETL cutting runtime from 90 to 40 min.
02

Education

IIIT Nagpur
2017 — 2021
Nagpur, IN
B.Tech, Computer Science & Engineering
  • Graduated with a focus on machine learning, distributed systems, and algorithms.
03

Toolkit & expertise

Languages
Ruby Python SQL Scala JavaScript SQL C++
Infrastructure
AWS PostgreSQL MySQL Redis Kafka Snowflake Docker CI/CD
Frameworks
Ruby on Rails Express.js FastAPI Sidekiq
Expertise
System Design Distributed Systems Auth & Security RBAC PII Masking API Design
04

Selected projects

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P / 01
News Event Extraction Engine

Clustered 50k articles into 12–15 categories with 90%+ event-detection precision. Sub-second retrieval on 100k+ PostgreSQL records.

spaCy DBSCAN TF-IDF PostgreSQL
↗
P / 02
Movie Recommender System

RBM collaborative filter on 1.2M IMDB records. RMSE reduced from 1.12 to 0.87. REST API at under 200ms p99 handling ~1k concurrent requests.

RBM TensorFlow Keras REST API
↗
P / 03
Live
RBAC Explorer

Define roles, resources, and permissions interactively. Visualize the access graph and verify enforcement decisions in real time.

FastAPI PostgreSQL React

Let's build something serious.

Open to senior backend, security, or distributed-systems roles. Particularly interested in fintech, infrastructure, or anything with real fraud/auth complexity.

aish1804@gmail.com →
Email aish1804@gmail.com LinkedIn linkedin.com/in/aishit-dua GitHub github.com/aishitdua
Phone +91 — email preferred