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Muhammad Abdulloh

@muhammadabdulloh

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I build and optimize backend APIs, integrations, and scalable systems from MVPs to legacy platforms.

Indonesia

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What I'm looking for

I'm looking to build and improve scalable backend systems across different technology stacks, product stages, and team sizes, from launching MVPs to modernizing complex legacy platforms.

I've delivered backend enhancements and integrations at SoftwareSeni for a leading Australian property-management provider, including Gmail and Outlook integration with an internal email system. I also optimized queries and orchestration to make API responses approximately 5× faster.

At Kuelap.inc, I refactored application code, database queries, and backend orchestration, improving API response times by 10–15×. I also helped revamp frontend components for greater reusability.

At onebrick.io, I designed and implemented data-integration APIs, launched a Data API MVP in six months, and led the upgrade from a synchronous version 1 to an asynchronous version 2. I supported client onboarding while building scalable backend services.

I've worked across Java, Kotlin, .NET, PHP, PostgreSQL, MySQL, React, Angular, and API development. I also bring Scrum Master experience facilitating Agile ceremonies and working with product owners to prioritize requirements.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

SoftwareSeni

Jul 2025 - Present (1 year 2 months)

Deployed at a leading Australian property-management provider to deliver backend enhancements and integrations. Improved user workflows by integrating external email providers and optimized backend queries to achieve ~5x faster API responses.

Kotlin Spring Boot MySQL Backend Development API Integration Performance Optimization

Senior Software Engineer

Slash.co

Oct 2024 - Jun 2025 (8 months)

Implemented a new Indonesian Tax Reporting system for a tax reporting provider, following engineering best practices to ensure scalability and maintainability.

Java Spring Boot PostgreSQL Backend Development System Design

Senior Software Engineer

Kuelap.inc

Feb 2023 - Nov 2024 (1 year 9 months)

Optimized application performance by refactoring code, improving database queries, and restructuring backend orchestration, resulting in 10-15x faster API responses. Collaborated with the team to revamp front-end components for re-usability.

Java Spring Boot React Angular PostgreSQL Performance Optimization Refactoring

Senior Software Engineer

onebrick.io

Dec 2021 - Dec 2022 (1 year)

Designed and implemented an API for data integration with external providers. Led a team to upgrade the main product from synchronous to asynchronous version.

Java Spring Boot PostgreSQL API Design Team Leadership

Software Engineer

onebrick.io

Aug 2020 - Dec 2021 (1 year 4 months)

Designed and implemented an API for data integration with external providers, launching an MVP in 6 months. Helped onboard and support several first clients.

Java Spring Boot PostgreSQL API Development client support

Scrum Master

Halofina

Aug 2018 - Aug 2020 (2 years)

Implemented Agile/Scrum processes and facilitated daily stand-ups, sprint planning, and retrospectives. Collaborated with product owners to prioritize tasks and ensure requirements were met.

Agile Scrum Facilitation Sprint Planning Product Ownership