Browser Extension Engineering
Browser extension engineering builds secure Chrome, Firefox, and Edge extensions that add features on top of the web tools your team already uses every day.
- 40+ projects delivered
- 14 industries served
- 9 countries
- 100% code ownership
What it is
What you're actually getting.
Browser extensions are the highest-use product surface most teams ignore. We build them with the security, performance, and store-policy discipline that keeps them shippable and unblockable.
Who it's for
Is this the right fit for you?
This is a good fit when…
- You want to overlay intelligence on a SaaS your team uses, but the vendor doesn't ship an API.
- Your existing extension is fragile, fails store review, or breaks every Chrome version.
- You need to interact with sensitive third-party data without compromising user trust.
You probably don't need this yet if…
- The tool you want to extend already offers a proper API or integration.
- Your need is a full web app, not a browser add-on.
How it works
A clear path from first call to launch.
Manifest V3 as the baseline
Service workers, declarative content scripts, strict CSP. We design for the current and next browser policy regimes, not the one being deprecated.
Third-party DOM as contract
We treat the target page as an unstable API. Selector strategies, fallback flows, and contract tests that flag breakage before users see it.
Security first
Permissions minimized, data flows audited, code signed. Store review is a side-effect of how we build.
Ready to get started with Browser Extension Engineering?
Tell us the shape of your problem. We'll reply within one business day with a serious read - not a sales pitch.
What you gain
The outcomes that matter to your business.
- Useful features layered onto tools that don't offer an API.
- An extension that keeps working when the sites it touches change.
- Smooth approval and updates across every major browser store.
What's included, signed off.
One extension that works across Chrome, Firefox and Edge
Built to keep working when the sites it touches change
A settings screen and secure sign-in for your users
Safe, controlled updates that won't surprise your users
We handle getting it approved in each browser store
The tools behind it
Built on proven, industry-standard technology.
These are our defaults for this work - the same tools trusted by companies worldwide. We swap any of them when your situation calls for something else.
- TypeScript
- React
- Tailwind CSS
- Node.js
- GraphQL
Industry applications
Browser Extension Engineering for your industry.
Startups
MVP to v1 SaaS with auth, billing, and dashboards ready for real users.
Marketplaces
Two-sided platforms with payments, roles, and the admin tooling to run them.
Logistics
Operational web apps that replace brittle spreadsheets and manual handoffs.
Professional services
Client portals and internal tools shaped around your real process.
Why teams choose us
Senior engineers who have shipped this before.
No account managers, no offshore handoffs. You work directly with the people building your product - the same team from the first call to launch and beyond.
40+
projects delivered
14
industries served
9
countries
100%
code ownership
Where we work
Adelaide-based, working worldwide.
Adelaide, South Australia
We work from Adelaide, South Australia, with clients across nine countries. For Australian clients, we build to the Privacy Act 1988 (the national law governing how personal information is handled) and the Australian Privacy Principles, and we can host your data in Australian regions where data sovereignty matters. For global clients, we handle cross-border data carefully and align to the standards your market expects, such as GDPR. Wherever you are, you work directly with the senior engineers building your project.
Fixed price
Scoped and quoted up front, so you know the cost before we start.
6 to 12 weeks
A clear timeline with something working to see along the way.
Senior team
You work directly with experienced engineers, plus support after launch.
Last updated: 5 June 2026
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Get In Touch
Ready to build something that works?
We take on a limited number of projects at a time so every client gets proper attention from start to finish. Whether you need a new SaaS platform, AI features added to your existing product, old software modernised, or a completely new system built from the ground up, we would like to hear about it.