How I can help
Need a senior engineer to build a website, custom application or business tool? I work with agencies and businesses remotely, turning project requirements into practical, maintainable solutions—from a focused feature to ongoing development support.
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WordPress & WooCommerce
Custom websites, WooCommerce features, plugins and multilingual websites built to be maintainable.
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Custom software & applications
I build software around your business requirements, from web applications and internal tools to tailored features that solve specific problems.
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Website speed & performance
Find bottlenecks, improve Core Web Vitals, tune caching and make production sites faster without guesswork.
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Integrations & automation
Connect WordPress with APIs, CRMs, payment gateways and third-party tools so your systems work together.
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Astro & modern frontend
Turn Figma designs into fast websites with Astro or Next.js, with a practical CMS workflow when your team needs one.
Senior engineering, with ownership
I've been building websites since around 2011, working with WordPress since 2013 and remotely with international teams since 2015.
I take responsibility beyond the task in front of me: understanding the business need, choosing a practical approach, shipping carefully and keeping production systems healthy. That includes the theme, plugins, integrations, performance, deployments and ongoing maintenance.
WordPress and WooCommerce are core strengths. I also build custom applications and work with React, Next.js and Astro when they are the right fit. You get a senior engineer who can work independently, communicate clearly and keep the bigger picture in view.
Ways to work together
I partner with digital agencies that need dependable white-label delivery, and with businesses that need an experienced engineer to improve a website, connect systems or build a useful tool.
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Agency development partner
White-label development support for digital agencies that need experienced hands without adding a full-time hire.
- WordPress, WooCommerce and custom frontend
- Feature development, integrations and maintenance
- Clear communication and predictable monthly capacity
Monthly partnerships · from $900 USD
Monthly capacity, delivery priorities and communication cadence are agreed upfront. Best for agencies with a steady development backlog.
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Direct business projects
Practical technology work for growing businesses — from improving an existing website to connecting systems or building an internal tool.
- Website modernization and performance
- API, CRM and workflow integrations
- Custom dashboards and business applications
Scoped projects · from $1,000 USD
A defined scope, milestones and handover agreed before development begins. Best for a clear business or website outcome.
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Fractional technical partner
Senior engineering guidance and hands-on delivery for teams that need technical leadership but aren't ready for a full-time senior hire.
- Architecture and technical planning
- Code reviews and delivery support
- Developer coordination and ongoing improvements
Monthly retainer · from $1,500 USD
A recurring mix of technical direction and hands-on delivery, with priorities reviewed regularly.
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Focused technical improvements
Start with a clearly defined problem before committing to a larger engagement.
- Performance and technical audits
- WordPress and WooCommerce troubleshooting
- Integration discovery and implementation plans
Fixed scope · quoted after discovery
A focused diagnosis or improvement with findings, recommendations and an agreed implementation option.
All prices are starting points, not fixed quotes. Before work begins, we agree on deliverables, monthly capacity or project milestones, communication cadence, exclusions and timeline. No unlimited-work promises or surprise scope.
What I've worked on
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Piktochart
About a year, sole WordPress developer
Owned piktochart.com, the highest-traffic site I've worked on. A Tailwind theme built on Automattic's
Read the Piktochart case study →_s, 60+ custom ACF Gutenberg blocks, a Git-based theme workflow on Kinsta, and migration work around Cloudflare and Kinsta. -
PlasticBank
About five years
Revamped the WordPress theme, improved caching and performance, and helped move the team from FTP uploads to Git-based deployment for a safer, more repeatable release process.
Read the PlasticBank case study → -
Povilo
2015 to 2023
Built and maintained a WooCommerce store for about eight years, including a custom payment gateway plugin. Long-term ownership meant supporting the store beyond launch and keeping its commerce workflows working.
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Astro sites from Figma
Modern frontend
Turned Figma designs into Astro sites for zenti.com, sevenfigurecreators.com, bn2health.com.au and ebasgroup.com.au. Also built Supersite with Astro and CloudCannon CMS.
Selected case studies
Explore how I approach real WordPress engineering work, from custom blocks and WooCommerce to performance and safer deployment workflows.
How I work
I keep engineering practical. I reduce repeated work with reusable components and automation, choose the simplest solution that meets the need, and avoid complexity that makes a system harder to maintain.
I use AI to speed up research, debugging and repetitive work, while staying responsible for the code, technical decisions and what gets shipped. Tools can accelerate delivery; engineering judgment still matters.
Build it simply. Own it properly.
A little about me
I've given community talks on WP-CLI at a WordPress meetup in Malang, and on Full Site Editing at WordCamp Campus Connect at Universitas Ciputra, Surabaya.
I type on split keyboards, switch between macOS and Linux more than I should, and keep my side projects in a folder called FukaiMori, which means "deep forest." Big, strong, a little mysterious. That's where this site's trees come from.
Have a project or a backlog to tackle?
If you need a dependable development partner or an experienced engineer to solve a specific problem, tell me what you are trying to achieve. I will reply with a practical next step and a clear view of scope.
Email tony@sanjaya.info