Yuvraj Kumar

Frontend • Middle • Srinagar, India • UTC+05:30 • Work permits: India • Available in 2 weeks

Data Scientist

JavaScript

Python

SQL

Node JS

C++

Responsive & Cross-browser: 5/10

UX & Visual Polish: 5/10

UI Component Architecture: 4/10

Active 2 days ago

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Overview

Technical skills

Timeline

Roles

Overview

A frontend UI engineer at a Middle level focused on crafting responsive React interfaces and component styles with Sass. The strongest proven skill is responsive UI and visual polish, demonstrated by per-component SCSS such as Dev04Tech/Movix/src/components/carousel/style.scss and Dev04Tech/Movix/src/pages/details/detailsBanner/style.scss. Public code does not show automated tests, advanced server-state handling, accessibility implementations, or measured performance optimizations.

Phone

Technical skills

Languages

JavaScript

Python

SQL

Node JS

C++

Python

Requests

pySpark

Django

Django REST Framework

Frontend

Sass

React.js

Redux

Redux Toolkit

React Router

Vite

ESLint

npm

AI/ML

LangChain

Model Context Protocol

AI Agents

NumPy

Pandas

Scikit-learn

TensorFlow

Keras

Spark

Agentic Workflows

Other

Delta Lake

Axios

Microsoft Fabric

TensorFlow C++

Power BI

GitHub

ETL/ELT

Git

Jupyter Notebook

Web3

Computer Vision

Transfer Learning

CNN

Timeline

Software Engineer • Middle

MAQSoftware • Full-Time

Jun 2025 to Present 1 Year 3 Months Noida In office

Architected a metadata-driven ingestion framework with Microsoft Fabric to load large datasets from multiple source systems into the Bronze layer using configurable strategies. Built scalable full and incremental pipelines using Fabric notebooks and pipelines, enabling processing at very high record volumes. Implemented a Medallion Architecture (Bronze to Silver to Gold) for transforming raw data into analytics-ready datasets, and automated daily reporting workflows using LangChain agents with MCP servers and Microsoft Teams APIs.

Microsoft Fabric

pySpark

Python

SQL

Delta Lake

ETL/ELT

LangChain

Model Context Protocol

Microsoft Teams

Agentic Workflows

AI Agents

Summer Trainee • Junior

Xtudy • Internship

May 2023 to Jul 2023 2 Months Hazaribagh In office

Developed and enhanced web interface components using front-end technologies during a summer software internship. Focused on building UI behavior and presentation for web pages using modern JavaScript and related web development practices.

JavaScript

Middle Frontend Developer Confidence: Medium UI Engineer

UI Component Architecture

4/10

How interface parts are built

Per-component SCSS files and clear naming show component-focused styling, but there is little visible JS component architecture or custom hook logic to demonstrate deliberate component boundaries.

Evidence

Dev04Tech/Movix/src/components/carousel/style.scss Dev04Tech/Movix/src/components/header/style.scss Dev04Tech/Movix/src/pages/details/detailsBanner/style.scss

Responsive & Cross-browser

5/10

Works on all screens and browsers

Responsive layouts and breakpoint mixins are used consistently across pages and components, plus media query rules in static landing pages show practical responsive work.

Evidence

Dev04Tech/Movix/src/pages/explore/style.scss Dev04Tech/langing_page1/style.css Dev04Tech/langing_page2/style.css

Performance Optimization

2/10

Speed of the interface

Perceived-performance patterns appear (skeletons, lazy-image placeholders) and lazy/infinite-scroll libraries are present in dependencies, but there is no measured optimization, bundle analysis, or explicit code-splitting evidence.

Evidence

Dev04Tech/Movix/package.json Dev04Tech/Movix/src/components/carousel/style.scss

Accessibility & Semantics

2/10

Usable for everyone

Static HTML and semantic element use exist, but there is no sign of ARIA attributes, keyboard focus management, or accessibility tooling in CI.

Evidence

Dev04Tech/langing_page1/index.html Dev04Tech/langing_page2/index.html

State Management & Data Flow

2/10

Managing data in the app

Redux toolkit and axios are included and store files are present, but there is no visible implementation of server-state patterns, request cancellation, optimistic updates, or state machines.

Evidence

Dev04Tech/Movix/package.json Dev04Tech/Movix/src/store/store.js Dev04Tech/Movix/src/utils/api.js

UX & Visual Polish

5/10

Look and feel quality

Multiple skeletons, hover animations, transitions, and detailed visual states indicate attention to UX polish and perceived performance in the UI layer.

Evidence

Dev04Tech/Movix/src/pages/details/detailsBanner/style.scss Dev04Tech/Movix/src/pages/details/videosSection/style.scss Dev04Tech/Movix/src/components/carousel/style.scss

Expertise

React• Middle

HTML & CSS• Middle

Technologies

Node JS• Middle

Redux

React.js

Vite

npm

Axios

Sass

ESLint

Redux Toolkit

React Router

Recommendations

Build responsive marketing and product landing pages and component libraries where the focus is on visual polish and cross-breakpoint layouts.
Develop media-rich single page applications that need well styled components and skeleton loading UX, such as galleries or streaming frontends.
Work on UI implementation, theming, and Sass-based design token integration rather than backend APIs or platform architecture.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

Movix langing_page1 langing_page2

Junior Backend Developer Confidence: Medium API Engineer

A backend-focused Python developer at a Middle level specializing in building Django REST APIs for simple e-commerce use cases. The strongest proven skill is implementing DRF-based endpoints, serializers and migrations as demonstrated in backend_api/main/serializers.py, backend_api/main/views.py and the migration files. There is limited production hardening evidenced by hardcoded secrets, raw SQL with string interpolation, no test coverage and missing robustness patterns.

API Design

3/10

How well APIs are designed

Basic REST API design using Django REST Framework and a custom pagination class is present, but there is no explicit versioning, no idempotency handling, and error contracts are minimal.

Evidence

Dev04Tech/Nest_mart_grocery/backend_api/main/views.py: use of DRF generics and viewsets (VendorList, ProductList, OrderDetail) Dev04Tech/Nest_mart_grocery/backend_api/main/pagination.py: CustomPagination class Dev04Tech/Nest_mart_grocery/backend_api/backend_api/urls.py: import of rest_framework_simplejwt (JWT referenced)

Data Layer & Database

3/10

Working with databases

Schema and migrations exist and show iterative evolution, but transaction management, explicit integrity constraints and attention to relational correctness are inconsistent.

Evidence

Dev04Tech/Nest_mart_grocery/backend_api/main/models.py: models for Product, Order, OrderItems, Customer, ProductRating Dev04Tech/Nest_mart_grocery/backend_api/main/migrations/0003_customer_order_orderitems.py: migration creating Customer, Order, OrderItems Dev04Tech/meme_project/main/utils.py: raw SQL usage with string interpolation (risk of SQL injection)

Scalability & Performance

2/10

Handling load and speed

Minimal scalability work: pagination is used but there is no caching, queueing, connection pooling, or measured performance tuning.

Evidence

Dev04Tech/Nest_mart_grocery/backend_api/backend_api/settings.py: REST_FRAMEWORK PAGE_SIZE and DEFAULT_PAGINATION_CLASS Dev04Tech/Nest_mart_grocery/backend_api/main/views.py: pagination_class usage in ProductList

System Architecture

3/10

Overall system structure

Reasonable monolithic separation (models, serializers, views) and a separate React frontend, but no evidence of deliberate service decomposition, config management, or graceful degradation patterns for production use.

Evidence

Dev04Tech/Nest_mart_grocery/backend_api/main/serializers.py: clear serializers separating API layer Dev04Tech/Nest_mart_grocery/backend_api/main/views.py: class-based views organizing endpoints Dev04Tech/Movix/src/store/store.js and src/store/homeSlice.js: frontend state separation using Redux Toolkit

Security & Auth

2/10

Protecting data and access

Some authentication pieces are referenced but secrets and credentials are exposed in code and input boundary protections are weak, indicating limited security hygiene.

Evidence

Dev04Tech/Nest_mart_grocery/backend_api/backend_api/settings.py: SECRET_KEY and database PASSWORD hardcoded Dev04Tech/meme_project/main/utils.py: insertion of user data via string-interpolated SQL and plaintext password handling Dev04Tech/Nest_mart_grocery/backend_api/backend_api/urls.py: reference to rest_framework_simplejwt but no clear token lifecycle handling

Reliability & Observability

2/10

Stability and monitoring

Very light reliability and observability: prints and basic try/excepts exist but no structured logging, metrics, retries/backoff, or meaningful tests are present.

Evidence

Dev04Tech/meme_project/main/views.py: try/except for DB connection with print statements Dev04Tech/Nest_mart_grocery/backend_api/main/tests.py: present but empty Dev04Tech/Movix/src/utils/api.js: console.log on error in API utility

Expertise

Microservices & API Architecture• Junior

Databases & Vector Storage• Junior

Python• Junior

Industries

Commerce• Junior

Food & Beverages• Junior

Technologies

Python• since 2024 • Junior

Django

Django REST Framework

Requests

Recommendations

Develop CRUD REST APIs and serializers for small to medium e-commerce services, focusing on DRF-based endpoints and pagination.
Harden and refactor existing systems: remove plaintext secrets, replace raw SQL with ORM/parameterized queries, and add input validation and authentication flows.
Implement basic reliability and observability: structured logging, simple metrics, error contracts, and a modest test suite (unit tests for serializers and view logic).

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

Movix Nest_mart_grocery meme_project

Intern Blockchain Developer Confidence: Low Generalist

Web3 developer (Intern) focused on blockchain crowdfunding with an expressed interest in building domain-specific dApp foundations. The strongest proven signal is the project focus on crowdfunding in blockchain as shown by README filenames such as 'Blockchain_Crowdfunding_platform' and 'Blockchain_crowdfunding'. There is no human-authored source code, smart contracts, tests, or CI configuration present to assess engineering quality or security practices.

Smart Contract Development

Writing smart contracts

Not evidenced in public code

Security & Audit

Checking contracts for flaws

Not evidenced in public code

Blockchain Protocol Understanding

Knowing how blockchains work

Not evidenced in public code

DApp & Web3 Integration

Connecting apps to blockchain

Not evidenced in public code

Tokenomics & DeFi Logic

Token and finance logic

Not evidenced in public code

Decentralization & Trust Model

Designing trust without middlemen

Not evidenced in public code

Industries

Blockchain & Crypto• Intern

Technologies

Web3

Recommendations

Create and include human-authored core artifacts: a Solidity smart contract (or equivalent) implementing the crowdfunding logic and unit tests (Foundry or Hardhat).
Add security-focused tests and adversarial scenarios, for example attacker contracts, invariant/fuzz tests, and reentrancy/ownership checks.
Provide CI config and README with architecture, trust assumptions and upgrade/governance model to demonstrate maturity and operational concerns.
Include integration examples (frontend transaction flow, signature scheme, or subgraph mappings) to show end-to-end dApp capability.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

Blockchain_Crowdfunding_platform Blockchain_Crowdfunding-platform Blockchain_crowdfunding