Amazon
SDE Intern
TanvirulIslam
Backend & Distributed Systems Engineer
Currently based inNew York, NY
From building backend platforms serving thousands of users to engineering multiplayer game networking, my focus is distributed systems and real-time infrastructure. Currently pursuing my MS in Computer Science, working on ServerSync, a distributed node management platform, exploring how systems maintain consistency across nodes, handle failures gracefully, and coordinate state in dynamic multi-node environments.
Skills
These are the areas and toolsets I rely on to ship polished, production-ready experiences that scale with a systems-first mindset.
Languages
Scala
Java
C
Python
JavaScript
TypeScript
HTML5
CSS3
GoScalaJavaCPythonJavaScriptTypeScriptHTML5CSS3GoDatabases
SQL
MongoDB
Oracle Database
PostgreSQL
RedisSQLMongoDBOracle DatabasePostgreSQLRedisFrameworks
React
Node.js
Express.jsMongoose
jQuery
Django
Spring Boot
TensorFlow
Next.jsReactNode.jsExpress.jsMongoosejQueryDjangoSpring BootTensorFlowNext.jsTools
Git
GitHubGitHub Actions
GitLab
LinuxAWS (S3/EC2)DockerCI/CD
Postman
InsomniaGitGitHubGitHub ActionsGitLabLinuxAWS (S3/EC2)DockerCI/CDPostmanInsomniaCS Principles
Data Structures & AlgorithmsObject Oriented DesignDistributed Systems
Cloud ComputingNetworkingSoftware SecurityStatic Code AnalysisData Structures & AlgorithmsObject Oriented DesignDistributed SystemsCloud ComputingNetworkingSoftware SecurityStatic Code Analysis
Cloud ComputingNetworkingSoftware SecurityStatic Code AnalysisData Structures & AlgorithmsObject Oriented DesignDistributed SystemsCloud ComputingNetworkingSoftware SecurityStatic Code AnalysisExperience
Experience across AI evaluation, game networking, and independent client work. I blend rigorous reviews, secure backend engineering, and automation to ship dependable products.
Credit Acceptance
Software Engineer Intern
- Built an event-driven document validation microservice on an S3/SQS pipeline, sized for millions of uploads.
- Layered magic-number signature checks, ICAP antivirus scanning, and image sanitization to block malicious files.
- Prevented duplicate processing of re-uploaded files by SHA-256 content-hashing outputs, making writes idempotent.
- Designed ack-vs-retry SQS semantics and resilience4j breakers to separate terminal failures from transient errors.
- Made workers stateless with Java virtual threads and async SQS clients to enable queue-depth-based scaling.
- Enabled vendors to upload documents directly for the first time, replacing a manually curated internal list.
Multiple AI Clients
Software Engineer (Contract)
- Reviewed 100+ AI-generated code samples for correctness and efficiency, surfacing recurring failure modes.
- Rewrote inefficient implementations, cutting execution time ~25% for backend-oriented tasks.
- Wrote test suites of 10+ cases per prompt to probe edge-case handling and benchmark code against requirements.
Indie Game Studio
Backend Network Engineer
- Kept 100+ concurrent players in sync across PC, mobile, and console through authoritative server-side replication.
- Masked network latency with client-side prediction and server reconciliation, so inputs felt instant on mobile.
- Cut per-client bandwidth by batching state updates and trimming packet overhead, stabilizing mobile sessions.
- Refactored persistence logic to guarantee client-server consistency, preventing data loss and save corruption.
- Traced and fixed desync and connection bugs in beta, part of an effort that lifted player retention ~20%.
Independent Freelancer
Full Stack Developer
- Built backend services for reward platforms serving 30-40K monthly users, tracking survey completions and payouts.
- Built a marketplace backend with escrow and seller verification, clearing $50-60K in monthly asset volume.
- Automated acquisition and fulfillment of digital goods in Python, letting power users sustain $5-10K monthly.
- Wrapped 10+ third-party integrations in rate limiting and retry logic, sustaining 98%+ uptime across platforms.
Projects
Modular projects spanning automation, visualization, and full stack delivery.
ServerSync
Parent-child distributed system management suite that supervises processes across large server fleets with automation at its core.
- Coordinates 50+ nodes over asynchronous bidirectional messaging in Go, with reconnect handling for node loss.
- Automated rollout and recovery workflows, cutting per-node restart and redeployment time by 80%.
- Modular command framework allows new operations to be added without touching node or transport code.
- Version-aware deployment logic supports rolling binary upgrades cluster-wide with minimal downtime.
- Live telemetry tracks node health, resource usage, and connectivity, firing alerts for rapid fault detection.
- Go
- Next.js
- Node.js
- MongoDB
AlgoBank
A quantitative trading platform leveraging AI-assisted development to model risk exposure, automate compliance, and visualize market analytics.
- Developed a modular backtesting engine for portfolio simulations and strategy analytics.
- Secured transaction flows using JWT authentication, RSA-backed secrets, and tamper-evident audit trails.
- Built CI/CD workflows with Docker Compose and GitHub Actions to streamline deployments.
- Implemented risk modules computing exposure, VaR, and anomaly signals for portfolio oversight.
- Applied AI-assisted tooling to validate financial logic and refine quantitative analytics.
- Python
- React
- PostgreSQL
- Docker
- Redis
LogStream
A Kafka-style publish-subscribe messaging platform that allows producers to write messages to durable, partitioned logs and consumers to read them sequentially using offsets.
- Partitioned, disk-backed commit log with sparse indexing that keeps seek times low as segment files grow.
- To stop producers from overwhelming brokers during traffic spikes, built backpressure into a binary TCP protocol.
- Consumer group coordination handles dynamic partition rebalancing while preserving at-least-once delivery.
- Go
- TCP
Collab Notes
A full-stack real-time collaborative text editor inspired by Google Docs enabling multiple users to edit shared documents simultaneously with smooth conflict-free syncing, live presence indicators, and a polished editing experience.
- Conflict-free multi-user editing via CRDTs (Yjs), reconciling concurrent edits without a central lock.
- Redis pub/sub fans out CRDT updates across server instances so every client converges in real time.
- Differential snapshots in PostgreSQL preserve full version history at a fraction of full-copy storage cost.
- Presence protocol tracks live cursors and connection state over WebSockets so collaborators see each other.
- Next.js
- PostgreSQL
- Redis
NetSnoop
A Python-based command-line tool for learning and experimenting with core networking fundamentals, including DNS, ping, traceroute, and basic TCP connectivity, using asynchronous I/O for responsiveness.
- Engineered a high-concurrency network analysis tool using Python's asyncio to execute non-blocking service health checks.
- Implemented configurable timeouts to distinguish between transient network latency and hard service failures.
- Designed a modular parser for complex IP ranges, generating structured JSON reports for external monitoring tools.
- Python
Graph Algorithms Visualizer
Interactive React application that renders graph and computational geometry algorithms for exploration and learning.
- Developed an interactive web application for visualizing graph and geometry algorithms with step-by-step animations.
- Applied modular component architecture to enable plug-and-play addition of new algorithms with minimal refactoring.
- Enhanced usability with animations and visual feedback for better learning outcomes.
- TypeScript
- React
Workshop Certificate Generation Tool
Python automation script that produces personalized PDF certificates for a Florida-based non-profit.
- Automated PDF certificate generation and emailing for a non-profit, replacing manual processes.
- Increased efficiency by 95% by automating repetitive administrative workflows.
- Python
Sheet2App
A full stack web app that is a collaborative no-code builder inspired by Google AppSheet that turns spreadsheets into secure applications.
- Architected scalable, secure backend services with careful attention to performance and data protection.
- Integrated Google APIs for authentication and dynamic Google Sheets connectivity to streamline user workflows.
- Partnered with teammates to shape UX flows that kept the builder approachable without sacrificing features.
- MongoDB
- Express
- React
- Node.js
Playlister
A full stack web app with YouTube-integrated playlist manager that lets users create, curate, and share music collections online.
- Developed a full-stack web platform allowing users to create and manage playlists directly via YouTube Data API integration.
- Implemented a RESTful backend for secure CRUD operations and optimized queries.
- Built reusable React components with centralized state management to improve scalability and UI responsiveness.
- MongoDB
- Express
- React
- Node.js
Dive into additional experiments, in-progress prototypes, and archived learnings on GitHub.
Visit me on GitHubContact
Let's build what's next
Whether you're scaling a distributed platform, curating observability for a fast-moving team, or exploring emerging tech bets, I'd love to collaborate. Reach out and let's design something resilient together.