Skip to main content

Hi, my name is

Prakash
Parajuli.

I build financial systems at scale.

Sr. Software Engineer specializing in payment infrastructure, commission engines, and ETL pipelines. Currently building fintech CRMs processing millions of transactions at VizyPay.

View My Work Download Resume

01. About Me

I'm a Sr. Software Engineer at VizyPay where I build payment infrastructure for merchant services. Commission engines processing millions of transaction records, automated underwriting workflows, ETL pipelines, and a full-stack fintech CRM used by thousands of agents.

I hold a Master's in Computer Science from USC (GPA: 3.82) and a Bachelor's in Computer Engineering (GPA: 4.0). Certified across AWS, Kubernetes (CKAD), Terraform, and Scrum.

I care about writing systems that are correct, observable, and maintainable. Diagnosing production deadlocks, building granular IAM systems, setting up integration testing with Testcontainers. I focus on doing things right.

0 Certifications
0 Companies
3.82 GPA at USC

02. Experience

Sr. Software Engineer @ VizyPay LLC

September 2023 — Present · Waukee, Iowa

  • Built a full-stack fintech CRM with NestJS, Angular, PostgreSQL, and MongoDB, supporting thousands of agents across merchant onboarding, underwriting, commissions, and payroll.
  • Engineered an automated commission engine processing millions of transaction records per cycle, cutting turnaround from days to under 20 minutes using BullMQ and PostgreSQL transaction isolation.
  • Diagnosed production deadlocks in concurrent financial workflows by introducing PostgreSQL advisory locks, retry orchestration, and idempotency checks.
  • Developed 100+ Apache Airflow DAGs for Fiserv payment data, reducing query time by 30% and CPU usage by 70%.
  • Designed a granular IAM system with ability-based auth, OAuth2 SSO via Azure AD, JWT auth, and MongoDB-backed policy documents.
  • Integrated underwriting APIs with webhook-driven sync, turning multi-hour manual KYB/KYC reviews into automated workflows.
  • Led design reviews and technical planning in a team of 10+ developers, defined PR standards and onboarded new engineers.
NestJS Angular 19 TypeORM PostgreSQL MongoDB BullMQ Redis Airflow PySpark Docker Azure

03. Featured Projects

Spring Eureka service registry showing 5 microservices registered and healthy

Distributed Microservices

Production-grade multi-service system with 5 Spring Boot services, API Gateway, and Config Server deployed on GCP Kubernetes. Jaeger distributed tracing, Resilience4j circuit-breaking, and Prometheus metrics. Fully automated CI/CD with GitHub Actions.

Spring Boot Kubernetes GCP Prometheus Jaeger

Stock Information Visualizer

Full-stack stock analysis platform with real-time TSLA/AAPL data, interactive price charts, company fundamentals, and top news aggregation. Angular frontend consuming a Node.js/Express API, styled with Bootstrap.

Angular Node.js Express Bootstrap Chart.js
Stock search interface showing TSLA real-time price at $242.95 with hourly price chart
GitHub productivity dashboard showing contributor commit analytics and scores

GitHub Productivity Dashboard

Paste any GitHub repo URL and instantly see contributor rankings by commit score, commit frequency analytics, and detailed commit message history. Flask backend with React frontend. Dockerized for one-command deployment.

Flask React Docker Tailwind GitHub API

Other Noteworthy Projects

Stock Trading App

Native Android app for simulated stock trading with real-time AAPL data, portfolio tracking, watchlists, and historical EPS charts. Built with Kotlin and a Node.js/Express backend.

Android Kotlin Node.js Express

Clinical NER with Transformers

Fine-tuned BERT, RoBERTa, and DeBERTa for named entity recognition on clinical patient notes. Achieved an F1 score of 88.21 with DeBERTa-Large and custom medical text tokenization.

Python BERT DeBERTa HuggingFace

Song Genre Prediction

Upload a .wav file and predict its genre across 10 categories (blues, rock, classical, etc.) using a Keras deep learning model trained on audio features extracted with librosa. React frontend with Flask API.

React Flask Keras librosa

Word Attack Game

Space-themed educational game built in Unity where players pilot a ship collecting letters to form words. Features power-ups, health systems, coin rewards, and a timer-based scoring mechanic.

C# Unity Game Dev

IoT Vehicle Monitoring

GPS-based vehicle tracking system built for the Nepal Government. Android app provides real-time location monitoring, tax notifications, and route history. Published as a research paper.

Android GPS IoT Haversine

04. Skills & Technologies

Languages

TypeScript Python JavaScript Java Golang SQL

Backend

NestJS Spring Boot Node.js Express TypeORM BullMQ

Frontend

Angular React Redux SCSS Bootstrap Tailwind

Data & ETL

Apache Airflow PySpark Apache Kafka Pandas

Databases

PostgreSQL MongoDB MySQL Redis

Cloud & DevOps

AWS Azure Docker Kubernetes Terraform GitHub Actions

Testing

Jest Testcontainers JUnit Karma Jasmine

05. Certifications

AWS Certified

Developer – Associate

Kubernetes CKAD

Application Developer

Certified Scrum

Scrum Master (CSM)

HashiCorp Terraform

Associate (003)

06. Education

University of Southern California

Master of Science in Computer Science

2021 – 2023
GPA: 3.82/4.0 · Los Angeles, CA

Dean's Merit Scholarship recipient

Advanced College of Engineering

Bachelor of Engineering in Computer Engineering

2014 – 2018
GPA: 4.0/4.0 · Lalitpur, Nepal

Multiple academic scholarships

07. Achievements

Dean's Merit Scholarship, USC

Awarded for academic performance during Master's program

Published Research

Vehicle Monitoring System Using Internet of Things

Cyber Security Training

Delivered training to Nepal Police Department in coordination with Prof. Subarna Shakya

Academic Scholarships

Multiple scholarships for academic excellence during undergraduate studies

08. What's Next?

Get In Touch

I'm always open to discussing new opportunities, interesting projects, or ways to collaborate. Whether you have a question or just want to say hi, I'll do my best to get back to you.

Say Hello LinkedIn