Open to opportunities

Arnab Pal

@arnabpal

Full-stack engineer specializing in event-driven distributed systems and AI-powered backends with end-to-end production ownership.

India

Message

What I'm looking for

I’m looking to build scalable event-driven SaaS and AI-powered backends, taking end-to-end ownership—from architecture to CI/CD—while working with a team that values reliability, clean system design, and practical GenAI integration.

I’m a full-stack engineer with 2+ years of production experience designing distributed systems, multi-tenant SaaS platforms, and AI-powered backends. I’m at my best when I can take end-to-end ownership—from database schema and API architecture to CI/CD pipelines and cloud infrastructure.

In my current role, I’m driving independent full-stack product development as the sole architect and engineer. I integrated FusionAuth for tenant lifecycles, engineered a DNS/AWS Secrets/K8s ingress setup for zero-touch readiness, and restructured a real-time expiration engine with BullMQ to slash notification latency by 67%.

I also focus on scalable reliability and security. I reduced API response times by 92% through MongoDB indexing strategies, consolidated auth into a centralized Passport JWT strategy, and improved NestJS bootstrap stability by eliminating circular dependencies. Alongside that, I build GenAI features—LLM pipeline design, prompt engineering, cost optimization, and integrations using Claude, Gemini, and OpenAI.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer

Current

Bot2Do Technologies

Mar 2025 - Present (1 year 3 months)

Took end-to-end ownership of a multi-tenant auth service integrating FusionAuth and engineered zero-touch tenant readiness using DNS, AWS Secrets, and Kubernetes ingress. Improved notification latency by 67% with a BullMQ/Postgres expiration engine and cut API response times by 92% via MongoDB indexing; consolidated auth logic across 50+ endpoints by deprecating 70% of redundant middleware.

FusionAuth NestJS BullMQ Kubernetes AWS Event Driven Architecture

Associate Software Engineer

Azilen Technologies

Jul 2024 - Dec 2024 (5 months)

Built a fault-tolerant chat engine using Elixir/OTP supervision trees, improving message delivery reliability by 25%. Transitioned 10+ legacy systems to a centralized SaaS architecture with ETL pipelines maintaining 100% data integrity, and authored 21+ TDD-driven REST APIs to reduce post-deployment production bugs by 30%.

REST APIs TDD ETL SaaS architecture Fault Tolerance PostgreSQL Data Integrity System migration

Software Engineer Intern

Azilen Technologies

Jan 2024 - Jun 2024 (5 months)

Developed real-time logistics monitoring by integrating Phoenix LiveView and WebSockets, reducing update latency by 40% for mission-critical operations. Improved React dashboard performance by profiling and refactoring render cycles and rewriting N+1 PostgreSQL queries with indexed joins, increasing UI speed by 20%.

UI rendering optimization Phoenix LiveView WebSockets React Performance Profiling PostgreSQL Query Optimization Real Time Systems UI Rendering Optimization

Education

Degrees, certifications, and relevant coursework

Ganpat University (U.V. Patel College of Engineering)

Bachelor of Technology, Computer Engineering

2020 - 2024

Grade: CGPA: 7.45 / 10.0

Activities and societies: Hackathon 2022: Smart Learning Management System (Front-end Developer); designed an end-to-end admission management and student lifecycle tracking platform for students and government bodies.

B.Tech in Computer Engineering at Ganpat University (U.V. Patel College of Engineering), completed from 2020 to 2024. Earned a CGPA of 7.45/10.0.