Requirements & specs
Turning a fuzzy ask into PRDs, decision logs, ADRs and testable specs, so the team builds the right thing once.
- PRDs
- ADRs
- OpenSpec
- Decision logs
Senior Software Engineer · Dhaka, Bangladesh
Sabik Abtahee
I take problems from a requirement to a released product.
I write the spec, design the experience, and build whichever layer the problem needs — web apps, .NET and Node services, or native desktop tools in Rust. Nearly seven years in, I care less about which stack and more about whether the thing actually helps the people using it.
01 — work
How I work
I don't stay in one lane. I follow a problem wherever it goes — from the first conversation about what's needed, through design, to the code and the release pipeline that ships it.
UX & product design
Mapping flows and roles, then proving them with clickable prototypes and themeable design systems before code.
- App flows
- Prototypes
- Design tokens
- Accessibility
Web applications
Large, data-heavy apps with shared component libraries, multi-library architecture and real-time updates.
- Angular
- TypeScript
- SolidJS
- React
- RxJS
Services & data
APIs and modular backends with clear contracts, sensible module boundaries and a single source of truth.
- .NET / C#
- NestJS
- PostgreSQL
- MongoDB
- SignalR
Desktop & developer tools
Native apps and tooling that make other engineers faster — from Rust desktop apps to CLIs and editor extensions.
- Rust
- Tauri
- egui
- VS Code API
- Node CLI
Delivery & automation
Release pipelines, signed auto-updates, CI that catches drift, and AI agents wired into everyday workflows.
- GitHub Actions
- GitLab CI
- Docker
- n8n
- AI agents
02 — projects
Selected work
Orbit
A workspace for engineers who juggle many repositories at once. Run and link apps and libraries, switch environments, open branches and merge requests across every repo, and keep real terminals, scripts, snippets and notes in one window.
- Rust core on Tauri v2 with a SolidJS UI and real PTY terminals with split panes
- Signed auto-updates that work behind TLS-inspecting corporate proxies
- One-click release pipeline building macOS (arm64/x64) and Windows installers
- Built-in MCP server so AI agents can read and change its configuration
- Rust
- Tauri
- SolidJS
- Tailwind
- xterm.js
- GitHub Actions
RTP99 POS — product & UX design
Defined a new point-of-sale for small counter-service restaurants from the ground up: the product requirements, the access model, the app flow, and a clickable prototype people could actually tap through.
- PRD, technical requirements, app flow and a 50+ entry decision log
- Roles × permissions access model for owners, managers and staff
- Clickable prototype covering ~105 screens across 12 flows, with five switchable themes
- Product specs
- UX flows
- Prototyping
- HTML/CSS
RTP99 platform architecture
Audited a portfolio of 40+ repositories serving several businesses, found the same capabilities rebuilt many times over, and laid out a phased path to a shared core.
- System map and roadmap: “products own meaning, shared services own mechanics”
- Seven ADRs covering stack, identity, messaging, data, API standards and edge
- Modular NestJS + Postgres core, shared CI workflows and a CI-checked service catalog
- Architecture
- ADRs
- NestJS
- PostgreSQL
- Docker
- CI/CD
More things I've built
Native macOS app
2026
Switchyard
A lightweight, native dev dashboard — explorer, embedded terminal with split panes, session tabs, a merge-request board and a menu-bar tray. The precursor to Orbit.
- Rust
- egui
- portable-pty
- Homebrew
CLI
2026
gitlab-mr-train
Runs a chain of dependent GitLab merge requests in order — waits for pipelines, merges, bumps downstream package versions, pushes and moves on. Resumable and parallel.
- TypeScript
- Node
- glab
- zod
VS Code extension
2025
RunKit
Run, stop and restart apps; build, watch and link libraries in parallel; and save custom commands — all from the editor sidebar.
- TypeScript
- VS Code API
Template
2024–26
Angular starter
A production-ready Angular starter I keep current: Nx libraries, Material + Tailwind, Vitest, Docker, lint and commit hooks, plus ready-made toasts, panels, guards and real-time helpers.
- Angular 21
- Nx
- Tailwind
- Vitest
- Docker
Data pipeline
2026
DSE stock screener
Scrapes ~300 Dhaka Stock Exchange listings, applies long-term fundamental rules and produces a ranked, explainable Excel workbook.
- Python
- pandas
- BeautifulSoup
- pytest
Raycast extension
2026
Copilot usage for Raycast
Menu-bar view of remaining GitHub Copilot quota, broken down by category, with the reset date.
- TypeScript
- React
- Raycast API
Machine learning
2019
Handwritten equation solver
Detects handwritten maths from a photo with a CNN, solves it, and keeps a history of uploads and results.
- Python
- CNN
- Flask
- Angular
03 — experience
Experience
2026 — Present
Remote
Architecture & product consultant · RTP99
- Leading the modernisation of a multi-business SaaS portfolio: system audit, roadmap and ADRs.
- Designing the next restaurant POS end to end — requirements, access model, flows and prototype.
- Set up the shared core service, UI workspace and reusable CI/CD workflows.
Jul 2024 — Present
Dhaka
Software Development Engineer 3 · IQVIA
- Architected a multi-library application so several products share one set of UI building blocks.
- Designed .NET APIs and real-time SignalR features behind data-heavy analytics dashboards; fixed rendering bottlenecks that crashed the browser.
- Built developer tooling adopted across the company — a VS Code extension, an Electron build tool, and AI-agent and n8n automations.
- Work directly with international clients, BAs and QA on requirements; lead code reviews, mentoring and engineering interviews.
Feb 2020 — Jul 2024
Dhaka
Software Engineer · SELISE Digital Platforms
- Led the front end of a financial-planning portal running in four countries — dashboards, investments, insurance, loans, retirement and banking.
- Extended ASP.NET Core endpoints and contributed to a shared component library used across client portals.
- Ran requirement analysis with a 15-person team and owned production deployments.
Jan 2019 — Jul 2019
Dhaka
Software Developer Intern · SELISE Digital Platforms
- Trained on a multi-tenant enterprise framework of microservices and isolated tenant storage used by European fintechs.
Education · 2016 – 2019
B.Sc. in Software EngineeringInstitute of Information Technology, University of Dhaka