Summary
Overview
Work History
Education
Skills
Certification
Websites
Timeline
Generic

Karthik Arumugam

Bengaluru

Summary

Principal Engineer with 6+ years of experience in developing high-performance cloud-native backend systems. Specializes in backend development, microservices architecture, and cloud engineering across AWS and GCP. Demonstrated expertise in full-stack development and data engineering, including real-time data pipelines. Proven leadership in mentoring teams and implementing best practices to align technology with business objectives.

Overview

6
6
years of professional experience
1
1
Certification

Work History

Principal Quality Assurance Engineer

KGEN
Bengaluru
11.2023 - Current
  • Designed and scaled Kdrop, a real-time campaign platform enabling marketers to configure and launch time-boxed campaigns (Fixed-Slot, Open-Ended, Raffle), powered by a state-machine engine for auto-start, auto-stop, and instant payouts. Scaled to ~5M verified actions/week across 25+ partner games, reduced reward fraud by 41%, and cut support tickets by 33%. Launched a dual-currency wallet, boosting cross-game spend by 22%.
  • Built Px Tracker, a fully serverless data backbone ingesting and normalizing user events into a query-ready data lake, powering both ad-hoc OLAP insights and low-latency per-user aggregates. Achieved 5K events/sec, unified telemetry from 10+ game titles, and ensured GDPR & SOC 2 compliance.
  • Authored the Aggregation Layer, a hybrid metrics hub merging sub-second real-time deltas with batch loads, delivering always-current metrics with p95 merge latency
  • Implemented the POG Oracle Network, a decentralized scoring layer transforming on-chain and off-chain data into canonical Proof-of-Gamer scores, trusted by 2M+ gamers. Achieved 25K score sets/min, end-to-chain latency
  • Delivered a Centralized Leaderboard System supporting real-time and batch leaderboards for >1M participants and 14K score updates/sec, with sub-350ms update latency, flexible normalization, and zero-downtime migration.
  • Developed a Payment-Management System governing end-to-end order-to-cash flows for ₹⅓M+ monthly budgets, with atomic pre-spend checks, multi-currency FX engine, and audit-ready ledgers, cutting month-end reconciliation by 75%.
  • Engineered the Clan Service, enabling social features and commission-based payouts with event-driven hourly settlements, duplicate-device detection, and fraud ratio
  • Created a Conversational RAG Assistant combining OpenSearch Serverless embeddings and a Bedrock agent, delivering
  • Built and maintained the Platform-Team Infrastructure & Delivery Stack, including IaC mono-repo, zero-downtime delivery pipelines, security guardrails, and unified observability, reducing infra cost variance and quarterly downtime.

Senior Software Engineer

XERBERUS
Remote
03.2025 - 06.2025
  • Developed Xerberus Testnet on Substrate/Polkadot for on-chain risk-rating ledger.
  • Automated multi-node infrastructure using Terraform and Ansible.
  • Implemented Aura/GRANDPA consensus and established RPC endpoints.

Cloud Consultant

BEATLY
Remote
12.2024 - 02.2025
  • Company Overview: Contract
  • Architected a multi‑account AWS Foundation (Organizations, SCPs, IAM Identity Center) and EKS‑based micro‑cloud; deployed zero‑downtime pipelines with Helm & Argo CD, boosting deploy speed 5× and passing SOC 2 on first audit.
  • Contract

Senior Software Engineer

KGEN
Bengaluru
01.2023 - 11.2023
  • Developed Kquest, a bulk-validation quest engine orchestrating multi-stage “waterfall” quests, processing ~50K submissions per stage with p95 stage latency ≈8 minutes and zero double-reward incidents.
  • Developed a Real-Time CDC Pipeline transforming DynamoDB change streams into ACID-compliant Iceberg table operations, shrinking analytics latency from 12 hours to minutes and reducing compute spend by 90%.
  • Led a Serverless Migration, porting 15+ microservices to Lambda/DynamoDB, cutting operating costs by >90%, halving p95 latency, and reducing deployment failures by 80%.
  • Built a Unified Notification Hub supporting both personal alerts and large-scale broadcasts (email, SMS, push), sending millions of notifications per batch with robust throttling, fail-safes, and 99.9% delivery success.

Senior Software Engineer

BYJU’S
Bengaluru
12.2020 - 01.2023
  • Revamped core learning platform with personalized plans, onboarding quizzes, and subscription flows using Ruby on Rails, Node.js, and React.
  • Developed microservices for progress tracking and real-time student-mentor synchronization.
  • Optimized AWS ECS infrastructure, reducing costs and latency.
  • Implemented automated CI/CD pipelines integrated with Snowflake using GitHub Actions and CloudFront.

Software Development Engineer

LICIOUS
Bengaluru
05.2019 - 12.2020
  • Delivered Developed Meatopia loyalty program to enhance customer retention.
  • Implemented quick checkout solutions to improve transaction speed.
  • Integrated diverse payment options to facilitate seamless transactions.
  • Established omnichannel notifications to streamline customer communication. (Node.js, Python/Django, Kafka) improving retention and engagement.


Education

Bachelor of Technology -

College of Engineering Guindy – Anna University
Chennai

Skills

  • Programming Languages: Go, Python, TypeScript, JavaScript, Ruby
  • Web Application Frameworks: Nodejs, Express, Fastify, FastAPI, Ruby on Rails (RoR)
  • Frontend Technologies: React
  • Microservices & Architecture: Microservices, Event-driven systems, Resilient architecture (RPO, RTO, fallback, backups), API best practices (OAuth2, JWT, Throttling, Rate-limiting, Versioning)
  • Database Technologies: DynamoDB, Aurora PostgreSQL, PostgreSQL, MySQL, MongoDB, Redis, ValKey
  • Messaging & Queues: SQS, SNS, Pub/Sub, Kafka
  • Real-Time Data Streaming: Kinesis, Firehose
  • API Development: REST, GraphQL
  • Serverless Architecture: Lambda, Fargate, DynamoDB, SQS, API Gateway
  • Containerization & Orchestration: Docker, Kubernetes, EKS, GKE
  • CI/CD: Jenkins, GitHub Actions, CodeBuild, Helm, ArgoCD
  • Infrastructure as Code: Terraform, CloudFormation, SAM, Helm, ArgoCD
  • Cloud Infrastructure: AWS (Solutions Architecture, Lambda, EKS, Fargate, DynamoDB, SQS, Step Functions, CloudFormation, Glue, Athena, API Gateway, CloudWatch, IAM, IRSA), GCP(GKE, CloudSQL)
  • Data Processing & Orchestration Frameworks: AWS Glue, Step Functions, ArgoFlow
  • Data Engineering & Analytics: S3 Data Lake, Apache Iceberg, Data cataloging & ETL (Glue), OLAP (Kinesis, S3, Athena), CDC
  • Security & Identity: OAuth2, JWT, IAM, IRSA, Security best practices
  • Monitoring & Observability: CloudWatch, Prometheus, Grafana, X-Ray

Certification

  • AWS Certified Solutions Architect – Associate
  • AWS Certified Developer – Associate
  • CKAD – Certified Kubernetes Application Developer
  • AWS Certified Data Engineer – Associate

Timeline

Senior Software Engineer

XERBERUS
03.2025 - 06.2025

Cloud Consultant

BEATLY
12.2024 - 02.2025

Principal Quality Assurance Engineer

KGEN
11.2023 - Current

Senior Software Engineer

KGEN
01.2023 - 11.2023

Senior Software Engineer

BYJU’S
12.2020 - 01.2023

Software Development Engineer

LICIOUS
05.2019 - 12.2020

Bachelor of Technology -

College of Engineering Guindy – Anna University

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Karthik Arumugam