About 3J Effect

3J Effect is a Sydney-based AI and software engineering firm. We design and build bespoke software systems, integrate artificial intelligence into everyday business operations, set up personal AI assistants, and develop web and mobile apps that solve real operational problems.

Our clients are Australian small and medium businesses, founders, professional service firms and growing teams who need reliable technology without hiring a full in-house engineering department. We also support companies claiming the R&D Tax Incentive (RDTI) by helping them identify, document and evidence eligible technical work.

The company is run by a local team of engineers and consultants based in Sydney, Australia. Every project follows our six-step delivery framework, from discovery and architecture through to build, testing, launch and ongoing support, so clients always know what is being built, why it matters, and when it will be delivered.

We believe good technology should be measurable. That is why we focus on clear goals, transparent pricing, bilingual English and Chinese communication, and systems that keep working long after launch.