Now Playing: Sunil Kurapati

Sunil Kurapati

Full Stack Engineer | Backend & Distributed Systems

A curiosity-driven coder crafting bulletproof event-driven SaaS and fintech pipelines. Transforming lines of script into microservice blockbusters.

LeetCode

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Official Selection 2026

THE ENGINEER DIARIES

GENRE:Distributed Full Stack

RUNTIME:3.5+ Years Experience

STARRING:Node, TypeScript, React

PROD CO:Neokred | Facctum

RATING:A+ Highly Scalable

ADMIT ONE | PREMIUM EDITION

★★★ BEST IN CODE ★★★

Director's Cut

Behind The Scenes

Sunil KurapatiFull Stack Engineer

Sunil Kurapati

Bengaluru, Karnataka, India

Available for Remote / Hybrid / Onsite

SCENE 1: THE INCEPTION — SOLAPUR TO PUNE

SUNIL (V.O.):

"I stepped into the tech ecosystem with a simple goal: to build scalable tools that solve everyday friction. Completing my B.E. in IT at Savitribai Phule Pune University (graduating with a 9.20/10 CGPA) laid the groundwork. That is where I discovered my fascination with distributed architectures."

SCENE 2: THE SCALE-UP — BENGALURU DEVELOPER HUB

NARRATOR:

Cut to Bengaluru. Sunil leads end-to-end POS interfaces and optimizes heavy NATS queues processing 100K+ events daily. The code becomes robust, the servers run clean, and CPU usage stays flat.

Accolades & Box Office Hits

LeetCode Tournament300+ Problems Solved

Distributed Throughput100K+ Events Processed/Day

Cast & Crew

Core Technical Competencies

Languages Details

Starring Cast

TypeScript95% Proficiency

JavaScript98% Proficiency

SQL88% Proficiency

The Blueprints

System Architecture & Design Patterns

Scene Sequencing (Async Flow)

Event-Driven & Serverless

Decoupling services through high-throughput asynchronous message queues. Designing systems that process events dynamically without locking operational threads.

Key Implementations

Ingestion Rate: 100K+ events/day processed via NATS JetStream and Kafka pipelines.
Fail-safe mechanisms: Configured ACK/NACK retries and Dead Letter Queues (DLQ).
Serverless execution: Optimizing AWS Lambda compute boundaries for dynamic operations.

STABILITY INDEX: A+SCALABLE PLAY

Cast Ensemble (Decoupled Services)

Microservices & Monoliths

Designing modular services that work in harmony. Transitioning massive monolithic applications to clean, decoupled microservices for high horizontal scale.

Key Implementations

Multi-tenant isolated routing: Serving 10K+ active users across multi-tenant RBAC nodes.
Kubernetes scalability: Tuning container OOM parameters by converting in-memory processes to streams.
gRPC communication: Implementing low-latency internal communication between distributed servers.

STABILITY INDEX: A+SCALABLE PLAY

Screenplay Script (Reusability)

Design Patterns & MVC

Utilizing structural and behavioral patterns to ensure codebase readability, testability, and fast iteration. Sticking to MVC rules for clean separation of concerns.

Key Implementations

Mediator Pattern: Handling decoupled async message routing between independent services.
Singleton Pattern: Securing single-point connection pools (PostgreSQL/Redis) to avoid exhaustion.
MVC & State: Separating business models, Express routes, and Zustand frontend state layers.

STABILITY INDEX: A+SCALABLE PLAY

Filmography

Chronological Releases & Productions

Neokred TechnologiesFeb 2026 – Apr 2026

Production: Neokred Blockbusters

Role: Software Engineer II (Backend / Full Stack) • Bengaluru

Led end-to-end frontend development of the APOS (Point-of-Sale) platform using Next.js, React, Zustand, Tailwind CSS, and TypeScript, building billing, inventory, customer management, onboarding, and product administration systems.
Collaborated across cross-functional teams to define reusable frontend architecture patterns and accelerate feature delivery.
Leveraged AI-assisted engineering workflows using Claude Code and structured agentic development practices to accelerate development, testing, and code reviews.
Developed secure fintech integration workflows for the CollectBot platform by integrating external banking APIs, building wrapper services, and protecting sensitive financial data using symmetric and asymmetric encryption techniques.

Facctum SolutionsDec 2022 – Feb 2026

Production: Facctum Features

Role: Software Engineer (Full Stack Engineer) • Bengaluru

Designed and led development of a centralized event-driven Audit Logging Platform using NATS JetStream and PostgreSQL, reliably processing 50K–100K events/day across multiple SaaS products.
Architected configurable audit pipelines with ACK/NACK retries, dead-letter queue handling, and controlled batch-based asynchronous processing, improving ingestion reliability and preventing PostgreSQL connection pool exhaustion under burst traffic.
Contributed significantly to the development of a centralized multi-tenant RBAC Admin Platform supporting 10K+ users, enabling tenant onboarding, feature management, and role-based access control during the organization’s transition from SaaS to PaaS.
Built tenant-aware authorization middleware enforcing feature entitlements, role-based permissions, and API-level access validation across distributed backend services.
Optimized high-latency APIs operating on 100K+ row datasets using indexing, pagination, and request throttling, reducing database load and improving response latency.
Resolved Kubernetes OOM failures in a dynamic Excel export service by redesigning workflows from full in-memory processing to chunked streaming-based processing, enabling stable exports of 200K+ records compared to the previous implementation failing beyond 5K records.
Collaborated with cross-functional teams to deliver scalable SaaS platform capabilities, while mentoring interns and junior engineers in backend development and distributed systems fundamentals.