Welcome to my Portfolio !

Transforming Concepts and Ideas into Seamless Products and Experiences

Hi! I'm Sahaj Bhadja, a Computer Engineer based in LA,California.

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Committed to clear communication and product focused solutions.
I'm very flexible with time zone communications
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The Inside Scoop
Currently building a Saas AI Automation Product
Do you want to start a project together?

My Experience

  • Software Engineer Intern 
    @Grad8

    June 2025 - PRESENT | Los Angeles, CA
    • Engineered an AI-powered grading platform using multimodal LLMs (GPT-4o, Claude 3.7, Qwen-VL) + OCR to score handwritten/text submissions; added batch grading, multithreading, and secure file ingestion with AWS RDS + FastAPI for high-throughput processing.
    • Developed rubric-generation dashboards and deployed a production backend on AWS serving 150+ instructors and 10K+ grading requests/day, cutting grading turnaround time by 60%.
  • ML Research Assistant 
    @USC AD Labs

    January 2025 - PRESENT | Los Angeles, CA
    • Implemented a GPT-style Decision Transformer for offline RL in autonomous driving—leveraged return-to-go, state, and action embeddings for long-horizon planning without value-bootstrapping and built end-to-end pipelines from trajectory logs to HD map vectors with discretized action spaces.
    • Architected a spatial-temporal encoder merging HD-map geometry (road layout, lane direction) with ego-agent context (past trajectories) via multi-head attention in closed-loop planning performance and exploring LLMs.
  • Software Developer Engineer 
    @Aasma Technology Solutions

    August 2023 - July 2024 | Ahemdabad, Gujarat, India
    • Formulated cross-platform data-sharing software with microservice architecture; built pipelines in Jenkins (Blue Ocean) to automate VM testing, executables, and integration/unit tests (PyTest, Mockito), working with Microsoft/GitHub team in Agile Scrum meetings.
    • Troubleshot and optimized large-scale API integrations with OOP, AWS Glue, and S3, improving response times by 30%. Led team of 10 for ETL workflows, boosting pipeline efficiency 68% and cutting technical debt 20%.
  • Full Stack Develoepr Inter 
    @Aasma Technology Solutions

    May 2023 – August 2023 | Ahmedabad, Gujarat, India
    • Developed a MERN-based resource management platform (CRM) with WebSockets, RESTful APIs, and a microservice architecture, addressing large-scale challenges in code review syncing 2M+ records across locations.
    • Deployed Azure SQL with Jenkins for automated testing, leveraging Google Analytics to reduce resource wastage by 42%, increase lead conversions by 15%, and expand market reach.
  • Data Analyst - Research Fellowship 
    @PDEU

    May 2023- August 2023 | Ahmedabad, Gujarat, India
    • Designed and implemented a malicious URL detection system on a dataset of 650K+ URLs, applying advanced statistical feature engineering and machine learning models (Gaussian NB, Random Forest) alongside deep learning architectures (RNN, LSTM, Bi-LSTM, GRU, CNN).
    • Achieved 96%+ detection accuracy, building a feature-rich pipeline with 21 behavioral indicators (e.g., IP presence, URL length, suspicious keywords) and generating actionable insights into phishing and malware trends.
  • Web Developer Intern 
    @LST Capitals

    November 2022 - January 2023 | Surat, Gujarat, India
    • Engineered cross-platform (MacOS & AndroidOS) data-pipeline framework using Databricks, Flask API, and Firebase to enable real-time analytics on 50K+ records with automated testing and integrated Web3 support.
    • Integrated a full-stack, PCI-compliant payment infrastructure supporting multi-currency cards, UPI, wallets, and PayPal with real-time analytics, refund/dispute automation, fraud detection, and webhook-driven.

My Skills

Developer
Python
JavaScript
TypeScript
SQL
Java
C
C++
Bash
Linux
Git
GO
Swift
HTML
TailwindCSS
React.js
Flask
Django
Node.js
Express.js
Next.js
PyTorch
Transformers
TensorFlow
OpenCV
Beautiful Soup
MySQL
MongoDB
AWS (S3, RDS)
PostgreSQL
GCP
Docker
Kubernetes
Jenkins
GitHub
Postman
Object-oriented design
Test Automation
Data pipelines
ETL Pipeline
Agile Methodology
SDLC

Languages:

PythonJavaScriptTypeScriptSQLJavaCC++GitBashLinuxGOSwift

Web Tech:

HTMLTailwindCSSReact.jsFlaskDjangoNode.jsExpress.jsNext.js

AI & ML:

PyTorchBeautiful SoupTransformersOpenCVTensorFlow

Database & Cloud Platforms:

MySQLMongoDBAWS (S3, RDS)PostgreSQL

Tools & Methodologies:

Data pipelinesData/ETL PipelineAgile MethodologySDLCDockerKubernetesJenkinsGitHubObject-oriented designTest AutomationPostman

A small selection of recent projects

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PixMod

AI-powered SaaS platform using SAM for image segmentation (object removal, recoloring, background removal) and Stable Diffusion for generative tasks like restoration and inpainting. Integrated CLIP enables visual element-based image search, with Stripe for payments.

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Big Brain

Built an AI-powered document platform with Pinecone, FAISS, Convex, and Clerk, enabling secure uploads, intelligent analysis, real-time summaries, fast vector search, and collaborative discussions in a Shadcn UI.

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HIMS - Hospital Management System

Gujarat State Hospital Management System for managing patient records, billing, scheduling appointments and other hospital management tasks.

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FinNexus - Personalized Banking System

Personalized banking system for managing accounts, transactions of debit and credit cards, loans, and other banking tasks.

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CPU Scheduler

Operating System project for simulating CPU scheduling algorithms like FCFS, SJF, SRTF, RR, Priority and Multilevel Queue.

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Quantum Resistant Blockchain Technology

Proposed a quantum-resistant blockchain framework using FALCON digital signatures and the DPoSB consensus algorithm. DPoSB ensures decentralization by monitoring node behavior and using Borda Count for fair witness node selection, maintaining security and transparency.

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My approach

Requirement Gathering & Planning

I start by gathering detailed requirements from stakeholders to fully understand their needs and expectations. I then define the project’s scope, objectives, and constraints to set clear goals. After that, I create a comprehensive project plan that outlines timelines, resources, and budget. This plan acts as my roadmap, ensuring that I stay on track and align with the project's vision.

Development & Progress Update

In this phase, I design the system’s architecture and components based on the requirements I’ve gathered. I create detailed specifications, wireframes, and prototypes to guide the development process. I then proceed with coding and developing the system according to these designs. Throughout development, I perform continuous testing to identify and address issues early, making sure the system meets all requirements and quality standards.

Development & Launch

Once development is complete, I deploy the system to the production environment. This involves configuring the environment, migrating data if needed, and ensuring all components are properly integrated. After deployment, I monitor the system’s performance and provide ongoing support to address any issues. I also gather user feedback to make necessary improvements and updates, ensuring the system remains effective and up-to-date.