The most valuable bugs are the ones your customers never see.
Over the past 12+ years, I have logged more than 27,000 hours worth of QA work across 70+ projects. Several client relationships span multiple years and thousands of hours, reflecting the level of trust, consistency, and ownership I bring to every project.
I am a Senior Manual QA specializing in GitHub-based development workflows, pull request validation, exploratory testing, and AI-assisted development environments. My role is not simply to find bugs. My goal is to help teams ship with confidence by identifying issues before they reach production, where they become significantly more expensive and disruptive to fix.
I specialize in Manual QA for iOS, Android, and Web applications, helping product teams reduce release risk through exploratory testing, regression testing, feature validation, and detailed bug investigation. By uncovering issues early in the development cycle, I help teams avoid costly production incidents, customer-facing defects, and unnecessary rework.
Throughout my career, I have worked closely with founders, product managers, designers, developers, and distributed teams to improve product quality and support reliable releases. I enjoy understanding how a product works, exploring user behavior, identifying edge cases, and providing actionable feedback that helps teams make informed decisions before shipping.
In addition to traditional QA activities, I regularly work within GitHub-based development workflows, validating pull requests, reproducing reported issues, verifying fixes, reviewing implementation outcomes, and providing structured feedback before changes are merged or released.
As development teams increasingly adopt AI-assisted coding tools, QA plays an even more important role as the final validation layer. Recent projects have expanded my responsibilities beyond traditional testing into PR validation, agent-assisted development workflows, QA session orchestration, and structured feedback loops between developers, coding agents, and product teams.
Areas of expertise:
• Manual Testing (iOS, Android, Web)
• Exploratory Testing
• Regression Testing
• Feature Validation
• Release Validation
• Pull Request Validation
• GitHub-Based Development Workflows
• Cross-Device Testing
• Bug Investigation & Reproduction
• QA Documentation & Reporting
• AI-Assisted Development Validation
• Agile Product Development
Tools and Platforms:
• GitHub
• Jira / Atlassian
• Confluence
• Azure DevOps
• Charles Proxy
• Trello
• TestRail
• Mixpanel
• Loom
• Lightshot
• Miro
• VS Code
• Xcode
• Android Studio
Device Lab Available for Real-Device Testing:
iOS Devices
• iPhone 6 Plus (iOS 12)
• iPhone 7 Plus (iOS 13)
• iPhone 12 Pro Max
• iPhone 13 Mini
• iPhone 14 Pro Max
• iPhone 15 Pro
• iPhone 16e
• iPod Touch 6th Generation
Android Devices
• Samsung S7
• Samsung S9
• Samsung Note 9
• Samsung A51
• Samsung A56
Desktop
• MacBook Pro 15"
• iMac M1
I am particularly interested in long-term collaborations where I can develop a deep understanding of the product, contribute meaningful QA insights, reduce release risk, and become a trusted quality partner for the team rather than simply an external tester.
Freddy S.
Automation & Applied AI | C#, VB.NET, ML.NET
Surabaya, Indonesia
$20/hr$20 per hour5.0 (8) 21 jobs $6K+ total earnings
Hi, I’m Freddy Ho - a Data & Automation Engineer with 10+ years of experience building business systems using C# and VB.NET.
I specialize in automating workflows and streamlining daily operations while transforming raw data into actionable insights for better decision-making.
What I can help you with:
• Automation systems for business processes
• Data processing and transformation
• Machine learning and predictive analytics
• Sales analytics, forecasting, and reporting
• API integrations and data pipelines
• Dashboards and database solutions
Strengths:
• C#, VB.NET and Python
• Automation and bulk data processing
• ML.NET and applied machine learning
• Statistical and analytical thinking
• Reliable and maintainable systems
Let’s build something that makes your work faster and easier.
Arung P.
Senior Backend & DevOps Engineer | Cloud, CI/CD, AI Automation
Semarang, Indonesia
$65/hr$65 per hour4.9 (26) 55 jobs $100K+ total earnings
It's been about three years since I took on client work here. I didn't step away from building, I just moved deeper into it: shipping infrastructure for products handling millions of users, hardening security across large codebases, and solving the kind of engineering problems that only show up once something is actually live.
I'm coming back because I miss working directly with clients instead of only through a team. What I bring is hands-on: architecting systems, untangling CI/CD pipelines that are quietly wasting your team's time, hardening infrastructure, or building the AI-powered automation you've been meaning to ship.
A few things I've actually shipped: cut a production monorepo down by 98%, from 1.5TB to 20GB, improved CI pipeline times by nearly half, and helped push a team's code quality and security scores from 30% to 95% in under a year. I've led more than one migration from a monolithic system to microservices, and built an LLM-powered assistant using a multi-agent architecture from scratch.
What hasn't changed: I care about clear communication, realistic timelines, and leaving your codebase better than I found it. My last stretch on this platform earned a 4.9 rating across 36 jobs and 14,000+ hours, and I'm picking freelance work back up selectively, so I'm choosy about projects but fully committed once I say yes.
If you need someone who can dig into a gnarly technical problem and actually ship the fix, whether that's a backend build, a DevOps overhaul, or an AI-powered workflow, let's talk.
Djony A.
IT Developer, Microsoft Access, Microsoft Excel & VBA Expert
Tangerang, Indonesia
$25/hr$25 per hour5.0 (3) 8 jobs $900+ total earnings
I am a professional Microsoft Access, Excel and VBA developer with over 20 years of experience. I am proficient in using Microsoft Access, including creating and manipulating tables, queries, forms, reports, macros, modules, and exporting/importing data. I am also proficient in using Microsoft Excel with the VBA programming language. Besides programming language, I am also proficient in database development, maintenance, and optimization for Microsoft Access database, and Ms. SQL Server. All these skills support me in providing what you need, and I am ready to advise you on the best solution for your needs.
There are many projects that I have worked on related to Administration, Manufacturing, and Finance.
I also have an IT education background, I even received awards as the best student several times during university.
Try it once and you will get my best work! Customer satisfaction is always the main thing in carrying out my projects.
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