Bibek Manandhar

Software developer building tested APIs, integrations, and reliable services for production systems.

Bhaktapur, Nepal

TypeScript
NestJS
PostgreSQL
REST APIs
Git
Linux
Neovim

What I bring

Backend work, end to end

I build features and APIs from requirements, connect them to the systems around them, test them, and fix what breaks in production without disrupting existing services.

API development

Production APIs for invoices, payments, refunds, settlements, and approvals, with DTO validation and error handling.

Integration

Tax, compliance, OCR, bank onboarding, payout, reconciliation, email, and BullMQ background-job integrations.

Testing and QA

Jest unit and integration tests and CI improvements, working with QA engineers on reliable test coverage and clear API contracts.

Debugging production issues

Traced and fixed concurrency, pagination, ORM-filter, and bulk-upload data-integrity issues in live services.

Databases and query optimization

Optimized SQL queries, schema design, and migrations in PostgreSQL for high-transaction financial workflows.

Git, deployment, and documentation

Git and GitHub Actions workflows, Docker deployments for development and production, and OpenAPI/Swagger docs for my APIs.

Experience

Software Developer

Finnoto Solutions Pvt. Ltd. · Bangalore, India · Remote from Bhaktapur · August 2023 - Present

Leading backend implementation of the core Accounts Receivable and Accounts Payable modules, along with inventory, vendor, and procurement workflows, using NestJS, TypeScript, and PostgreSQL.

Designed and built REST APIs and business logic for invoices, credit notes, purchase orders, vendor onboarding, payments, refunds, disputes, settlements, and approvals.
Implemented tax, compliance, foreign-currency, OCR, bank onboarding, payout, reconciliation, email, and background-job integrations.
Investigated production issues involving concurrency, pagination, ORM filters, and bulk-upload data integrity.
Worked with frontend developers and QA engineers to deliver features with clear API contracts and reliable test coverage.
Wrote optimized SQL queries and database migrations, improving data retrieval for high-transaction financial workflows.
Delivered JWT authentication, role-based access control, two-factor authentication, password reset, tests, and CI improvements.
Designed configurable multi-level approval workflows with handover tracking and deviation reporting.
Deployed backend services with Docker, keeping configuration maintainable across development and production.

Education

Bachelor in Computer Engineering (Tribhuvan University)Khwopa College of Engineering · October 2018 - May 2023
Plus Two in Science (HSEB)Capital College and Research Center · 2016 - 2018

Selected work

Projects

Most of my production work is private, so those projects are described at the module level.

Accounts Payable Platform

The Accounts Payable product at Finnoto, where I work across the backend: workflows, financial modules, and integrations.

Configurable multi-level approval workflows with handover tracking and deviation reporting, the biggest piece I have worked on.
APIs and business logic for invoices, credit notes, purchase orders, vendor onboarding, payments, refunds, disputes, and settlements.
Bank onboarding, payout files, and reconciliation automation, plus tax, compliance, foreign-currency, OCR, and email integrations on background jobs.

Private · Finnoto

ncli

Rust CLI published on crates.io that syncs and generates NestJS resources such as entities, DTOs, controllers, services, and modules, then runs formatting and linting.

crates.io for ncli (opens in a new tab)

Photo Backup Server

Backend for a photo backup server built with the Axum framework in Rust.

Source for Photo Backup Server (opens in a new tab)

Intrusion Detection System

Final-year major project: a web application around a few-shot learning model trained on CICIDS2017, with Node.js, React, and Python components.

Source for Intrusion Detection System (opens in a new tab)

Open source · Bash-it: Fixed a bug where the powerline theme printed an error before every prompt (15k+ stars). Merged August 2025. View PR

Early projects

Brake Fail

A 2D game in Python built with pygame. My first real project, started in 2020.

Source for Brake Fail (opens in a new tab)

Snake

The classic 2D Snake game in plain JavaScript, built in 2021.

Source for Snake (opens in a new tab)

Toolkit

Technical skills

APIs and backend

NestJS, Express.js, Node.js, Axum (Rust), REST API design, API versioning, pagination and filtering, DTO validation, OpenAPI/Swagger

Testing and debugging

Jest, unit and integration testing, Postman, curl, logging, debugging production issues, performance and bottleneck analysis

Integrations and async work

OCR, bank and payout files, email, BullMQ background jobs, third-party APIs, event-driven architecture fundamentals

Data

PostgreSQL, Redis, MongoDB, TypeORM, raw SQL, schema design, migrations, indexing, query optimization, transactions

Security and delivery

JWT and refresh tokens, RBAC, two-factor authentication, Git, GitHub Actions, Docker, Linux, basic AWS services

Languages and practices

TypeScript, JavaScript, Rust, Python, Bash; SOLID principles, modular architecture, Agile, cross-team API coordination

Linux and tooling

Linux as my daily driver with a Sway/Wayland desktop, Bash and shell scripting, Neovim with a custom Lua config (LSP, Treesitter), Vim, systemd user services, and Git on the command line

See my dotfiles

Training: Cisco Networking Academy (networking and cybersecurity career paths) and AWS Educate (cloud fundamentals). View badges on Credly

2011
My first computer
My dad got me my first computer, and I broke it within a week. After it came back from repair, I fixed every problem it had myself.
2016
Science stream
Studied science (Plus Two) at Capital College and Research Center while spending most of my free time on computers.
2018
Computer Engineering
Began a Bachelor in Computer Engineering at Khwopa College of Engineering (Tribhuvan University).
2020–21
First games
Built Brake Fail, a 2D game in Python with pygame, and then a classic Snake game in JavaScript.
2021
Linux and scripting
Started using Linux seriously and automating it with Bash, writing small tools like a desktop-entry generator.
2023
Networking and security
Completed Cisco career paths in networking and cybersecurity, wrote Hack The Box writeups, and started this blog.
May 2023
Graduated
Finished my degree. Major project: an intrusion detection system using few-shot learning on CICIDS2017.
Aug 2023
Software Developer at Finnoto
Joined Finnoto Solutions to build its Accounts Payable platform with NestJS and PostgreSQL. Approval workflows are the biggest piece I have worked on.
2024
Cloud basics and side projects
Covered AWS fundamentals through AWS Educate and kept building in Rust, including a file-transfer tool and Pong.
2025
A full system of my own
Built a photo backup system end to end: a Rust/Axum server, a Next.js web client, and an Expo mobile app. Also wrote a DNS server in Rust.
Aug 2025
First open-source contribution
Got a bug fix merged into Bash-it (15k+ stars): its powerline theme printed an error before every prompt.
2026
Published ncli
Released ncli on crates.io, a Rust CLI that generates and syncs NestJS resources. It is now at v0.1.6.