Available for freelance / remote work

Software Engineer

Tahmid Islam — Software Engineer

Md Tahmid Islam Bhuiyan (Tahmid Islam Rifat) is a software engineer in Dhaka, Bangladesh, building fintech and enterprise systems at Celloscope Ltd., plus web and Flutter products for clients.

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Backend APIs

Database Design

Web & Mobile

DevOps & CI/CD

Loan Management

Dashboard

Total Revenue

$2.48M

↑ 18.6% vs last 30 days

Last 30 days
01M2M3MApr 20May 4May 18
View Project

01 / About

Hi, I'm Tahmid.

Full-stack & mobile engineer with 3+ years building fintech, ERP, and client products.

Software Engineer · Dhaka, Bangladesh

"

I turn complex financial logic into clean, maintainable software that ships on time and scales.

Open to freelance & full-time

Core Stack

Node.jsNestJSAngularNext.jsFlutterPostgreSQLOracle PL/SQLRedisDocker
Download Résumé

Off the clock: photography — the moon, the sky, and quiet corners of nature.

My journey so far

From intern to engineer leading enterprise builds.

  1. Software Engineer

    Celloscope Ltd. · Dhaka

    2025 – Present

    Leading enterprise accounting & loan systems. ~30% faster transactions, automated CI/CD.

  2. Junior Software Engineer

    Celloscope Ltd. · Dhaka

    2023 – 2025

    Accounting, inventory, HR & loan modules. Clean architecture with Hapi.js & Angular.

  3. Intern / Trainee

    Celloscope Ltd. · Dhaka

    2023

    First REST APIs, DB models & enterprise workflows with Angular & Hapi.js.

  4. M.Sc. CSE — ongoing

    Jahangirnagar University · 2024–present

    Education

    B.Sc. CSE — AIUB · 2019–2023

Shipped:

HisabIMSCSB PlatformBizTrac ERP

02 / Skills

A focused toolkit for full-stack delivery.

Grouped by the layers I use most across fintech, ERP, web, and mobile work.

Frontend

AngularReactNext.jsNuxtFlutterTailwind CSS

Backend

Node.jsExpress.jsHapi.jsNestJSREST APIsPrisma

Database

PostgreSQLOraclePL/SQLMySQLRedisQuery Tuning

DevOps

DockerNginxLinuxGitLab CIGitHub Actions

Tools

TypeScriptPythonDartVitestPlaywrightJasperStudio

03 / Experience

Outcome-oriented engineering.

Enterprise fintech at Celloscope Ltd. and client products on web and mobile, with measurable results.

Software Engineer — Celloscope Ltd.

  • Lead enterprise accounting and loan systems for multi-branch financial institutions.
  • About 30% faster transaction processing and 25% lower query response time.
  • Automated deployments with Docker, Nginx and GitLab Runner, cutting manual effort by 40%.

Client Projects — Web & Mobile

  • Design and ship client products end to end: NestJS and Next.js platforms and Flutter apps.
  • Built the CSB school operations platform and the BizTrac ERP.
  • Handle production deployments and security maintenance across client sites.

Junior Software Engineer — Celloscope Ltd.

  • Built accounting, inventory, HR and loan modules with Hapi.js and Angular.
  • Query and index tuning improved reporting performance by about 20%.
  • Delivered PDF financial reports and executive dashboards.

04 / Projects

Selected systems and product surfaces.

Three concise case studies. Deeper architecture and implementation notes live on the project pages.

View all case studies
CASE

Education · Client platform

CSB — School Operations Platform

Audit trail: Every write

A NestJS platform for Civil School Bangladesh covering academic and accounting operations, with bulk Excel/CSV import, Bengali PDF generation, a Next.js admin app, and a Flutter companion app for parents.

  • Every data change recorded
  • Safe bulk data import
  • Bengali PDF documents
NestJSPrismaNext.jsFlutter
Read case study
CASE

Fintech · Microfinance

IMS — Integrated Microfinance Solution

Logic: Oracle PL/SQL

An enterprise microfinance platform at Celloscope Ltd.: database schemas, complex PL/SQL financial logic, REST APIs, dynamic reports, dashboards, and PDF financial reports.

  • Database-level financial logic
  • Dynamic reporting
  • PDF financial reports
OraclePL/SQLREST APIsJasperStudio
Read case study
CASE

ERP · Web + Mobile

BizTrac ERP

Mobile: Flutter app

An ERP and inventory management platform with a mature Flutter mobile app (barcode/QR scanning, charts, PDF generation) and a web app being migrated from Express.js to Next.js.

  • Barcode/QR scanning on mobile
  • PDF documents on device
  • Legacy web app being modernized
FlutterNext.jsTypeScriptTailwind
Read case study

05 / Blog

Clear notes on engineering decisions.

Short, structured writing that supports SEO, AI discovery, and practical knowledge sharing.

Explore writing

Designing scalable loan systems

Practical patterns for repayment schedules, disbursement scenarios, and audit-friendly loan workflows—written by a fintech software engineer.

FintechLoan SystemsBackendArchitecture
Read more

FAQ

Common questions.

Who is Tahmid Islam?

Md Tahmid Islam Bhuiyan, also known as Tahmid Islam or Tahmid Islam Rifat, is a software engineer in Dhaka, Bangladesh who builds fintech, ERP, web and Flutter mobile systems. Tahmid works at Celloscope Ltd.

Is Md Tahmid Islam Bhuiyan the same person as Tahmid Islam Rifat?

Yes. Md Tahmid Islam Bhuiyan is the full name; Tahmid Islam and Tahmid Islam Rifat are the names used professionally and online, including on GitHub (tahmidislamrifat).

What does Tahmid Islam build?

Microfinance, accounting and loan management systems at Celloscope Ltd., and client products: a school operations platform, the BizTrac ERP with a Flutter app, and production websites.

What technologies does Tahmid Islam use?

Node.js, NestJS, Express.js, Hapi.js, Angular, Next.js, Nuxt, React, Flutter, PostgreSQL, Oracle PL/SQL, Prisma, Redis, Docker, Nginx, and TypeScript.

How can I contact Tahmid Islam?

Email [email protected] or message Tahmid Islam on LinkedIn (linkedin.com/in/tahmidrifat).

Is Tahmid Islam available for remote work?

Yes. Tahmid Islam is available for freelance and remote software engineering work.

Available for remote work

Contact

Have a system to build?

Send the problem, constraints, and timeline.
I'll reply with a practical next step.

Direct

LinkedIn GitHub