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Bengaluru, Karnataka, India

Anshu Kumar

Software EngineerBackend systems, APIs and Next.js applications

Backend and Next.js engineer. At Multibagg I have been an SDE 1 since 2023, building the services, APIs and data model behind a stock market product, the scheduled jobs that keep its data current, and the Next.js application on top of them. On my own time I build DevTools, 42 browser-based developer utilities, and QuantumBytes, which turns scattered Indian government data into something you can actually read.

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Selected work

Things I have built and still run

Products shipped end to end, from data model to interface to the deploy that keeps them online.

Multibagg

2023 – present

A stock market product: backend services, APIs and the app on top

multibagg.ai

SDE 1, backend services, APIs and Next.js

Multibagg turns market and company data into research a retail investor can act on. I build the backend: the services, APIs and data model behind the product, plus the Next.js application on top of them: the user portfolio, financial calculators, market overview and stock homepage.

The data layer is the part I own most closely: cron jobs that keep the stock database current, and recurring work queued through BullMQ and Redis so each stage retries on its own instead of failing as one chain. API performance is held up by a caching layer, and the application is containerised with Docker.

I also built an AI-driven summary feature that reduces a company's financial statements to a readable overview, and the chatbot surface on the product.

The communication layer delivers realtime alerts over AWS SES for email and WhatsApp for instant reach, so a user hears about something affecting their portfolio when it happens rather than the next time they log in.

Data visualisation runs on Recharts, covering interactive price graphs and the charts behind the portfolio views. Auth covers credentials, two-factor and social sign-in.

2+ yrs
shipping in production
24/7
scheduled data pipelines
2 channels
realtime alerting
  • Node.js
  • TypeScript
  • Prisma
  • PostgreSQL
  • Next.js
  • React
  • Redis
  • BullMQ
  • Docker
  • AWS SES
  • Recharts

DevTools

2025 – present

The developer tools you keep searching for. 42 of them, no sign-up

devtools.devlabz.in

Design, architecture and implementation

One Next.js application hosting 42 independent tools, each solving a single everyday engineering chore: formatting JSON, generating Zod schemas, decoding tokens, compressing images, analysing HAR files, redacting PII.

Most tools run entirely in the browser, so nothing a user pastes ever leaves their machine. The work that genuinely needs a server, such as OCR, PDF inspection and Open Graph rendering, runs behind typed route handlers with structured errors and logging.

Around the tools sit seven more surfaces: a Tech Radar, DevTools Times, AI Skills, an MCP server that exposes the whole toolset to AI agents, Tech Events, embeddable Widgets and Save Links.

42
production tools
7
surfaces beyond tools
1
MCP server
  • Next.js 16
  • React 19
  • TypeScript
  • Prisma
  • PostgreSQL
  • better-auth
  • Tailwind CSS
  • Sanity
  • WebAssembly
  • Vitest

QuantumBytes

2025 – present

India's scattered public data, turned into something you can read

quantumbytes.devlabz.in

Design, architecture and implementation

Indian government data is public but effectively unreadable, spread across hundreds of departmental portals, in incompatible formats, with no shared vocabulary. QuantumBytes aggregates it into one place and presents it as charts and dashboards rather than PDFs and spreadsheets.

The platform covers five areas (economy, education, crime, elections and news), pulling from over 150 government sources into a normalised store of 2.5M+ data points, with live indicators such as GDP growth and inflation on the front page.

2.5M+
data points
150+
government sources
5
domains covered
  • Next.js
  • TypeScript
  • Node.js
  • Data ingestion and ETL
  • Tailwind CSS

PromptForge

2023

Prompt creation, viewing and management in one interface

github.com/ansh2822

Full-stack development

An interface for creating, viewing and managing prompts, designed to make the whole loop feel like one continuous task rather than a series of forms. The clearer flow lifted user engagement by 30%.

Authentication runs through NextAuth.js and data through MongoDB Atlas, improving data integrity by 25% and application reliability by 20%.

+30%
user engagement
+25%
data integrity
+20%
reliability
  • Next.js
  • React
  • NextAuth.js
  • MongoDB Atlas
Capabilities

What I reach for

Broad ownership means the stack is wide by necessity. These are the areas I work in regularly, not a list of everything I have ever touched.

Backend and data

Modelling the domain, then keeping reads fast and writes safe as the surface area grows.

  • Node.js
  • Express.js
  • Prisma
  • SQL
  • PostgreSQL
  • MongoDB

Product engineering

Shipping features end to end: schema, server, interface and the deploy that puts them in front of users.

  • Next.js
  • React
  • TypeScript
  • JavaScript
  • Vue.js
  • RESTful APIs

Automation and events

Work that runs itself: scheduled pipelines, queued jobs and the retries that keep them honest.

  • Cron jobs
  • BullMQ
  • Redis
  • Caching
  • Background processing
  • Event-driven architecture

Messaging and delivery

Getting a message to a person at the moment it matters, on the channel they actually read.

  • AWS SES
  • WhatsApp Business API
  • Realtime alerting
  • Transactional email

Interface craft

Design systems, accessible components and the data visualisation that makes a number mean something.

  • Tailwind CSS
  • HTML/CSS
  • Recharts
  • Data visualisation
  • Design tokens
  • Accessibility

Platform and tooling

The infrastructure and practice around the code: containers, auth, tests and version control.

  • Docker
  • Authentication and 2FA
  • Jest
  • Git
  • C++
  • OOP
Experience

Where I have worked

  1. November 2023 – present

    Bengaluru, India

    SDE 1MultibaggCurrent

    • Develops key features for a stock market product, including user portfolios, financial calculators and AI-powered company summaries.
    • Owns automated stock database updates through cron jobs, and recurring background work queued via BullMQ and Redis so each stage retries independently.
    • Built the realtime alerting layer on AWS SES and the WhatsApp Business API, notifying users the moment something affects their portfolio.
    • Optimised API performance with caching and containerised the application with Docker.
    • Works across backend services and APIs, data and AI pipelines, the web frontend and the mobile client, on a small team with broad ownership.
    • Built advanced data visualisations with Recharts, including interactive price graphs, and implemented authentication covering credentials, two-factor and social sign-in.

  2. January 2023 – April 2023

    Remote

    Full Stack Developer InternBharat Intern

    Built PromptForge, prompt creation and management on Next.js, NextAuth.js and MongoDB Atlas. +30% user engagement.

  3. August 2022 – November 2022

    Bengaluru, India

    Full Stack DeveloperCompsoft Technologies

    Built ATS-optimised résumé templates and responsive front ends with HTML, CSS, JavaScript and Python. +80% approval rates.

Education

  1. 2023

    Bachelor of Engineering

    Visvesvaraya Technological University, Bengaluru

Certifications

  1. 2023

    Web Development Bootcamp

    Udemy

    JavaScript ES6, CSS, React, Express.js and PostgreSQL for full-stack development.

Contact

Looking for an engineer who ships across the whole stack.

I am open to full-time roles. The fastest way to reach me is email. I read everything and reply to anything specific.

akanshu028@gmail.com