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AP

Arnab Pal

Open to work2 years experience

Full-stack engineer

Bengaluru, Karnataka, IndiaTarget Roles: Backend Engineer • Full-Stack Developer • Frontend Specialist

Full-stack engineer specializing in distributed systems, multi-tenant SaaS, and AI-powered backends.

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Standing Rank

Rank Not Available

Developer Badges

Badges Pending

Skills & Technologies

30 skills
typescriptjavascriptelixirsqlpostgresqlpythonnode.jsnestjsnext.js 14expressreactphoenix liveviewtailwind cssdockergithub actionsawsredisprisma ormmongodbmulti-tenant saassystem architecturedistributed systemsevent-driven architectureoauth 2.0real-time apisgenai integrationprompt engineeringllm cost optimisationopenai whisperllm pipeline design

Work Experience

Full Stack Developer

Bot2Do Technologies

Mar 2025 - Present Remote
  • Designed a Multi-Tenant Auth Service: Took end-to-end ownership of integrating FusionAuth to handle tenant lifecycles; Engineered and built a 2-stage systematized setup for DNS, AWS Secrets, and K8s ingress, ensuring zero-touch environment readiness across client tenants.
  • Improved High-Throughput Task Scheduling: Independently architected and restructured a real-time expiration engine using BullMQ batch processing and Postgres connection pooling, slashing notification latency by 67%.
  • Refactored Database Architecture: Executed advanced MongoDB indexing strategies for high-concurrency modules, reducing API response times by 92% (from 10s to 800ms); guided internal knowledge-sharing session on indexing patterns for the engineering team.
  • Unified Enterprise Security: Drove the consolidation of disparate middleware into a centralized Passport JWT strategy, deprecating 70% of redundant auth logic across 50+ endpoints and establishing the pattern as the team-wide authentication standard.
  • Resolved Critical System Bottlenecks: Diagnosed and eliminated circular dependencies in NestJS using forwardRef, improving bootstrap stability and reducing module load times by 15%; documented the resolution pattern for future onboarding.

Associate Software Engineer

Azilen Technologies

Jul 2024 - Dec 2024 Gujarat, India
  • Developed Fault-Tolerant Communication Systems: Leveraged Elixir/OTP supervision trees to build a resilient chat engine, increasing message delivery reliability by 25%.
  • Managed Large-Scale Cloud Migrations: Transitioned 10+ legacy systems to a centralized SaaS architecture, designing ETL pipelines that maintained 100% data integrity across complex workflows.
  • Deployed High-Quality API Suites: Authored 21+ RESTful APIs using Test-Driven Development (TDD), reducing post-deployment production bugs by 30%.

Projects

B2B SaaS Platform — Conversational AI & Booking Engine

View Project
NestJSTypeScriptAWS ECS FargateRedisAnthropic Claude API
  • Designed and built a webhook-driven conversational platform on NestJS 10 + TypeScript (monorepo architecture) serving the service-industry vertical; implemented QR-based token validation with Redis-backed session management; integrated a 10-stage AI classification pipeline using Anthropic Claude API and OpenAI Whisper API for multilingual voice intake across 100+ languages.
  • Deployed on AWS ECS Fargate via GitHub Actions CI/CD with Docker multi-stage builds, automated Prisma migrations, and async event-driven webhook processing; replaced ALB with Cloudflare Tunnel reducing staging infra cost by 7x; achieved sub-200ms webhook response and $0.015 AI cost per session.

Scalable Job Importer

View Project
Node.jsRedisBullMQDocker
  • Architected a Distributed Task Queue utilizing BullMQ with a 50-worker concurrency limit to process records asynchronously.
  • Lowered DB write contention by 60% and eliminated system timeouts during peak traffic loads.

AI-Finance Management App

View Project
Next.jsOpenAI APIPrisma
  • Developed an mechanized advisory system leveraging OpenAI LLMs to perform trend analysis and generate personalised weekly reports.
  • Decreased time-to-insight from 2+ hours of manual review to under 5 minutes; accelerated deployment cadence by 50% through a Dockerized CI/CD pipeline.

Vercel-Clone

View Project
Node.jsRedisAWS S3Microservices
  • Orchestrated and Programmed a Microservices Architecture (upload service + build worker + deploy orchestrator) accelerating upload speeds by 90% using AWS S3 Parallel Uploads.
  • Reduced build-to-deploy cycles by 40% through containerised worker orchestration and Redis-based status tracking.

GitHub Auto-Reviewer Bot

View Project
TypeScriptGemini AINode.js
  • Computerized technical audits using Gemini AI, integrating GitHub Webhooks and BullMQ for reliable background processing.
  • Reclaimed 40% of manual review time while consistently flagging security vulnerabilities with 95% precision.

Leaderboard Standings

Leaderboard Position Pending

Global test scores, peer standing percentiles, and algorithm leaderboard ranks are updated dynamically.

Assessment Highlights

Assessments Not Completed

Coding evaluations, system assessment results, and conceptual score badges will appear here after taking a test.

AI Collaboration Score

AI Collaboration Score Pending

Developer coding behavior, assistant cooperation, and AI pair-programming indicators are evaluated during live coding sessions.

Role Compatibility Profile

Role Compatibility Analysis Pending

Custom matching reports, candidate role compatibility percentiles, and core engineer strength profiles are processed once conceptual code screenings are complete.

Achievements

Smart Learning Management System — Hackathon 2022

Conceptualised and designed a platform to assist students and government bodies in managing admission processes and tracking student lifecycle data end-to-end.

About Details

Professional Bio

Full-stack engineer with 2+ years of production experience designing distributed systems, multi-tenant SaaS platforms, and AI-powered backends. Specialise in event-driven architecture, LLM integration, and scalable backend engineering.

B.Tech in Computer Engineering in Computer Engineering

Ganpat University, U.V. Patel College of Engineering (2020 - 2024)

Languages: English, Hindi
Email: Locked