Ibrahim Muhammad

Backend Engineer

I build backend services with Go, Node.js, and Laravel. My work spans a commercial billing product, enterprise workflows, and real-time device integrations.

5+ years in software development · East Java, Indonesia

View selected work Download CV

Ibrahim Muhammad, backend engineer — Founder of BillingMikrotik.
Backend engineering with product ownership experience.

Selected projects

Backend responsibilities, implementation decisions, and outcomes.

Case-study posters illustrate each project’s workflows, not original product screenshots. They use synthetic records, never customer data.

UI reconstruction · synthetic demo data

BillingMikrotik

Billiard billing & POS

Founder & Lead Developer

Go
Fiber
MySQL
JWT
sqlmock

Build and support a commercial billing and POS platform, with reliable membership transactions and secure account access.

My contribution

Developed the Go/Fiber membership backend with hexagonal architecture and a repository pattern.
Implemented idempotent member-point top-ups, QR activation, refresh-token flows, and OTP expiry.
Added authorization checks and repository-level tests using sqlmock.

Result. The platform served 200+ paying clients and supported 1,000+ customer members.

Evidence: CV + local Go membership repository and Git history.

UI reconstruction · synthetic demo data

Real-time monitoring

BLUESILO

Software Engineer · Project-based

Node.js
MongoDB
MQTT
gRPC
Jest

Integrate camera and NVR devices into a real-time monitoring platform with dependable streaming and runtime status updates.

My contribution

Developed Express REST APIs and NVR/ISAPI integrations, with MQTT synchronization and gRPC services.
Implemented RTSP/HLS playback, connection validation, readiness checks, and container lifecycle recovery.
Added request validation, authorization, error diagnostics, and Jest tests for device and streaming workflows.

Result. Contributed to 26 development tickets covering backend integrations, API enhancements, and full-stack fixes.

Evidence: CV + local device, recording, and MQTT service code.

CV-based concept · synthetic demo data

Workflow automation

PT HM Sampoerna

Software Engineer Intern

Laravel
MySQL
Node.js
WebSocket

Reduce repetitive operational data processing and improve communication in enterprise order-management workflows.

My contribution

Developed automation scripts for repetitive operational data workflows.
Enhanced Laravel/MySQL REST APIs for enterprise workflow integration.
Implemented Node.js and WebSocket order-management chat, supporting debugging, testing, and QA handoff.

Result. Reduced manual processing by up to 85% and supported 36 successful conversion tickets.

Evidence: CV only; original application UI was not inspected.

More projects & local development

Additional work found in local repositories. Development status is shown explicitly.

Enterprise workflow project

SIMGEAR

Full Stack Developer

Turning scattered spreadsheets into a shared workflow. A centralized appraisal system for multiple branches.

Laravel
MySQL
Sanctum
RBAC
React

Backend work

Built the Laravel/MySQL backend with REST APIs, Sanctum authentication, and role-based access control.
Integrated Google Drive and added request validation for enterprise workflows.
Used transaction-safe writes and soft deletion, alongside React/TypeScript frontend modules.

Centralized appraisal workflows across multiple branches, including projects, payments, and documents.

Evidence: CV + local Laravel project, payment, and branch routes.

Local development · deployment not established

F&B POS

Backend development contribution

A food-and-beverage POS backend with outlet-scoped reporting, shift reconciliation, and current stock snapshots.

Go
Chi
PostgreSQL
pgx
JWT

Backend work

Added shift-scoped sales reports and current stock snapshots using Go handlers and PostgreSQL repositories.
Validated outlet/cashier access and constrained report windows to the selected shift.
Added report integration tests covering cross-midnight sales, stock snapshots, and access boundaries.

Implementation and test files are present in the local repository. Production deployment and business impact have not been established.

Evidence: Local Go handlers, repository code, tests, and owner-attributed Git commits.

Early development · proposed UI only

Container Monitoring Agent

Developer · early-stage research

A Go agent for Docker state polling, persistent incidents, Telegram reporting, and narrowly scoped opt-in restart recovery.

Go
Docker API
SQLite
Telegram

Backend work

Implemented Docker polling, persistent SQLite incident records, and a notification outbox for Telegram reporting.
Added recovery reservation with cooldown and hourly limits before a single allowed restart attempt.
Kept recovery disabled by default and limited it to allowlisted exited/dead standalone containers.

An early-development agent with implementation and tests in the local repository. A production deployment and web console are not claimed.

Evidence: Local Go agent README, incident/recovery code, and Git history; no existing web UI.

Existing commercial results remain sourced from the CV. New local-development entries do not imply paying clients or production deployment. Proprietary code and operational data are not published.

Experience

Commercial product development and work within engineering teams.

Sep 2025 — Present
Software Engineer
BLUESILO · Project-based
Real-time monitoring, device integrations, and streaming workflows with Node.js, Express, and MongoDB.
Feb 2025 — Jul 2025
Software Engineer Intern
PT HM Sampoerna
Operational automation, enterprise REST APIs, and real-time order-management communication.
Jan 2021 — Jul 2025
Founder & Lead Developer
BillingMikrotik
Built and supported a commercial billiard billing and POS product, including a Go membership backend.
Jan 2023 — Jan 2025
Full Stack Developer
KJPP Guntur Eki Andri dan Rekan
Developed SIMGEAR, a Laravel-based platform for multi-branch appraisal operations.

Some roles overlap. Dates and the current BLUESILO status reflect the supplied CV.

Education

Bachelor of Information Technology
Universitas Telkom · Jun 2025 · GPA 3.77 / 4.00

Achievement

Top 156 — INNOVILAGE 2023

View certifications

Technical expertise

Tools and practices used in the projects above.

Backend & data

Go / Fiber, Node.js / Express, PHP / Laravel, TypeScript, MySQL, MongoDB.

Membership services, enterprise APIs, and monitoring integrations.

Architecture & security

Hexagonal architecture, repository pattern, transactions, JWT, Sanctum, RBAC.

Idempotent top-ups, access control, and transaction-safe application workflows.

Real-time integrations

WebSocket, Socket.IO, MQTT, gRPC, RTSP / HLS, NVR / ISAPI.

Order-management chat, camera integration, playback, and streaming recovery.

Testing & delivery

Jest, sqlmock, Git, Docker, CI/CD.

Device workflow tests, repository tests, and deployment tooling.

Infrastructure project — in progress according to CV: BillingMikrotik staging on a DietPi home server, with Cloudflare Tunnel, host monitoring, and GitHub Actions integration.

Certifications

Get in touch

Let’s build
something reliable.

Have a backend role or a project in mind? Let’s talk about the systems behind it.

Backend engineering
API integrations
Product development

East Java, Indonesia

A conversation starts here

Write to me at

ibrahimmuh26@gmail.com

Email me

A short introduction and a little project context are a good place to start.

LinkedInConnect professionally GitHubExplore my code

Backend Engineer

I build backend services with Go, Node.js, and Laravel. My work spans a commercial billing product, enterprise workflows, and real-time device integrations.

5+ years in software development · East Java, Indonesia

View selected work Download CV

Selected projects

Backend responsibilities, implementation decisions, and outcomes.

Case-study posters illustrate each project’s workflows, not original product screenshots. They use synthetic records, never customer data.

UI reconstruction · synthetic demo data

BillingMikrotik

Billiard billing & POS

Founder & Lead Developer

Go
Fiber
MySQL
JWT
sqlmock

Build and support a commercial billing and POS platform, with reliable membership transactions and secure account access.

My contribution

Developed the Go/Fiber membership backend with hexagonal architecture and a repository pattern.
Implemented idempotent member-point top-ups, QR activation, refresh-token flows, and OTP expiry.
Added authorization checks and repository-level tests using sqlmock.

Result. The platform served 200+ paying clients and supported 1,000+ customer members.

Evidence: CV + local Go membership repository and Git history.

UI reconstruction · synthetic demo data

Real-time monitoring

BLUESILO

Software Engineer · Project-based

Node.js
MongoDB
MQTT
gRPC
Jest

Integrate camera and NVR devices into a real-time monitoring platform with dependable streaming and runtime status updates.

My contribution

Developed Express REST APIs and NVR/ISAPI integrations, with MQTT synchronization and gRPC services.
Implemented RTSP/HLS playback, connection validation, readiness checks, and container lifecycle recovery.
Added request validation, authorization, error diagnostics, and Jest tests for device and streaming workflows.

Result. Contributed to 26 development tickets covering backend integrations, API enhancements, and full-stack fixes.

Evidence: CV + local device, recording, and MQTT service code.

CV-based concept · synthetic demo data

Workflow automation

PT HM Sampoerna

Software Engineer Intern

Laravel
MySQL
Node.js
WebSocket

Reduce repetitive operational data processing and improve communication in enterprise order-management workflows.

My contribution

Developed automation scripts for repetitive operational data workflows.
Enhanced Laravel/MySQL REST APIs for enterprise workflow integration.
Implemented Node.js and WebSocket order-management chat, supporting debugging, testing, and QA handoff.

Result. Reduced manual processing by up to 85% and supported 36 successful conversion tickets.

Evidence: CV only; original application UI was not inspected.

More projects & local development

Additional work found in local repositories. Development status is shown explicitly.

Enterprise workflow project

SIMGEAR

Full Stack Developer

Turning scattered spreadsheets into a shared workflow. A centralized appraisal system for multiple branches.

Laravel
MySQL
Sanctum
RBAC
React

Backend work

Built the Laravel/MySQL backend with REST APIs, Sanctum authentication, and role-based access control.
Integrated Google Drive and added request validation for enterprise workflows.
Used transaction-safe writes and soft deletion, alongside React/TypeScript frontend modules.

Centralized appraisal workflows across multiple branches, including projects, payments, and documents.

Evidence: CV + local Laravel project, payment, and branch routes.

Local development · deployment not established

F&B POS

Backend development contribution

A food-and-beverage POS backend with outlet-scoped reporting, shift reconciliation, and current stock snapshots.

Go
Chi
PostgreSQL
pgx
JWT

Backend work

Added shift-scoped sales reports and current stock snapshots using Go handlers and PostgreSQL repositories.
Validated outlet/cashier access and constrained report windows to the selected shift.
Added report integration tests covering cross-midnight sales, stock snapshots, and access boundaries.

Implementation and test files are present in the local repository. Production deployment and business impact have not been established.

Evidence: Local Go handlers, repository code, tests, and owner-attributed Git commits.

Early development · proposed UI only

Container Monitoring Agent

Developer · early-stage research

A Go agent for Docker state polling, persistent incidents, Telegram reporting, and narrowly scoped opt-in restart recovery.

Go
Docker API
SQLite
Telegram

Backend work

Implemented Docker polling, persistent SQLite incident records, and a notification outbox for Telegram reporting.
Added recovery reservation with cooldown and hourly limits before a single allowed restart attempt.
Kept recovery disabled by default and limited it to allowlisted exited/dead standalone containers.

An early-development agent with implementation and tests in the local repository. A production deployment and web console are not claimed.

Evidence: Local Go agent README, incident/recovery code, and Git history; no existing web UI.

Existing commercial results remain sourced from the CV. New local-development entries do not imply paying clients or production deployment. Proprietary code and operational data are not published.

Experience

Commercial product development and work within engineering teams.

Sep 2025 — Present
Software Engineer
BLUESILO · Project-based
Real-time monitoring, device integrations, and streaming workflows with Node.js, Express, and MongoDB.
Feb 2025 — Jul 2025
Software Engineer Intern
PT HM Sampoerna
Operational automation, enterprise REST APIs, and real-time order-management communication.
Jan 2021 — Jul 2025
Founder & Lead Developer
BillingMikrotik
Built and supported a commercial billiard billing and POS product, including a Go membership backend.
Jan 2023 — Jan 2025
Full Stack Developer
KJPP Guntur Eki Andri dan Rekan
Developed SIMGEAR, a Laravel-based platform for multi-branch appraisal operations.

Some roles overlap. Dates and the current BLUESILO status reflect the supplied CV.

Education

Bachelor of Information Technology
Universitas Telkom · Jun 2025 · GPA 3.77 / 4.00

Achievement

Top 156 — INNOVILAGE 2023

View certifications

Technical expertise

Tools and practices used in the projects above.

Backend & data

Go / Fiber, Node.js / Express, PHP / Laravel, TypeScript, MySQL, MongoDB.

Membership services, enterprise APIs, and monitoring integrations.

Architecture & security

Hexagonal architecture, repository pattern, transactions, JWT, Sanctum, RBAC.

Idempotent top-ups, access control, and transaction-safe application workflows.

Real-time integrations

WebSocket, Socket.IO, MQTT, gRPC, RTSP / HLS, NVR / ISAPI.

Order-management chat, camera integration, playback, and streaming recovery.

Testing & delivery

Jest, sqlmock, Git, Docker, CI/CD.

Device workflow tests, repository tests, and deployment tooling.

Infrastructure project — in progress according to CV: BillingMikrotik staging on a DietPi home server, with Cloudflare Tunnel, host monitoring, and GitHub Actions integration.

Certifications

Get in touch

Let’s build
something reliable.

Have a backend role or a project in mind? Let’s talk about the systems behind it.

Backend engineering
API integrations
Product development

East Java, Indonesia

A conversation starts here

Write to me at

ibrahimmuh26@gmail.com

Email me

A short introduction and a little project context are a good place to start.

LinkedInConnect professionally GitHubExplore my code

Selected projects

My contribution

My contribution

My contribution

More projects & local development

SIMGEAR

Backend work

F&B POS

Backend work

Container Monitoring Agent

Backend work

Experience

Software Engineer

Software Engineer Intern

Founder & Lead Developer

Full Stack Developer

Education

Achievement

Technical expertise

Backend & data

Architecture & security

Real-time integrations

Testing & delivery

Certifications

Let’s buildsomething reliable.

Ibrahim Muhammad

Selected projects

My contribution

My contribution

My contribution

More projects & local development

SIMGEAR

Backend work

F&B POS

Backend work

Container Monitoring Agent

Backend work

Experience

Software Engineer

Software Engineer Intern

Founder & Lead Developer

Full Stack Developer

Education

Achievement

Technical expertise

Backend & data

Architecture & security

Real-time integrations

Testing & delivery

Certifications

Let’s buildsomething reliable.

Let’s build
something reliable.

Let’s build
something reliable.