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Resume

Backend engineer with 3.5 years of experience building serverless and GraphQL services for identity, authentication, and payments. I work with Rust, Python, Node.js, and AWS, and contribute to infrastructure automation and application delivery.

Experience

Rust Developer I · Redrob

Jun 2023 — Present

Formerly McKinley Rice · Rust, Python, JavaScript, Node.js, GraphQL, AWS, PostgreSQL, DynamoDB, Redis, Terraform, GitHub Actions, Jenkins, Fastlane

  • Designed and developed 10+ platform features across backend services, web applications, and mobile platforms, from requirements and low-level design through testing and production releases.
  • Built serverless backend services in Rust, Python, and Node.js on AWS Lambda for identity, credential management, blockchain, payment, and data-processing workflows.
  • Developed GraphQL and AWS AppSync APIs for user profiles, identity lifecycle, account management, subscriptions, contributions, transaction history, marketplace operations, and sales reporting.
  • Implemented subscription and payment workflows across PayPal, Apple App Store, and Google Play, including upgrades, renewals, cancellations, trials, multi-currency purchases, and webhook processing.
  • Integrated Persona identity verification and built onboarding, account linking, recovery, and authentication workflows, including manual review, identity-document handling, provider synchronization, and backfills.
  • Refactored legacy serverless services, delivered a v2 backend API, and migrated users from AWS Cognito and DynamoDB to PostgreSQL, reducing infrastructure costs by 30% with zero downtime.
  • Automated AWS provisioning with Terraform and established Android and iOS CI/CD pipelines using GitHub Actions, Fastlane, Jenkins, and Xcode Cloud.
  • Contributed to React.js websites, migrations, and AWS Amplify deployments. Upgraded a React Native application from 0.64 to 0.77 and migrated Amplify SDK integrations from v4 to v6.
  • Contributed React 19 compatibility, passkey fixes, offline support, and service-worker recovery on the web.
  • Modernized Lambda runtimes, including migration to Python 3.14, and improved logging and monitoring with CloudWatch.
  • Wrote unit and end-to-end tests using cargo test, pytest, and Mocha/Chai.

Backend and Cloud Engineering Intern · Squbix Digital Pvt Ltd

Jul 2022 — Dec 2022

TypeScript, Node.js, Serverless Framework, AWS EC2, VPC, Autoscaling, Terraform

  • Built a self-hosted AWS S3 image-conversion Lambda trigger, reducing image-conversion costs by 70%.
  • Created Terraform scripts to autoscale AWS EC2 blockchain nodes within private subnets.
  • Built a TypeScript SDK for interacting with blockchains from server and mobile applications.

Technical skills

Languages & backend

  • Rust
  • Python
  • JavaScript
  • TypeScript
  • Node.js
  • GraphQL
  • Serverless Framework

Databases & caching

  • PostgreSQL
  • MongoDB
  • DynamoDB
  • Redis

AWS

  • EC2
  • Lightsail
  • Lambda
  • API Gateway
  • Cognito
  • S3
  • SNS
  • SES
  • Amplify
  • AppSync
  • Secrets Manager
  • KMS
  • CloudWatch
  • CloudFront
  • CloudFormation

Infrastructure & delivery

  • Docker
  • Terraform
  • Git
  • GitHub
  • GitHub Actions
  • Jenkins
  • Fastlane
  • Xcode Cloud
  • Google Cloud
  • Firebase

Web, mobile & testing

  • React.js
  • React Native
  • HTML
  • CSS
  • Puppeteer
  • cargo test
  • pytest
  • Mocha
  • Chai

Education

B.Tech in Computer Science and Engineering · 2019 — 2023

Silicon Institute of Technology · CGPA: 9.19/10

Achievements

  • Microsoft Certified: Azure Fundamentals (AZ-900)
  • Affinidi Special Track Winner, Hack The Mountains 2.0

hi@sumeetnaik.com