Integrate the SDK
Feature Experimentation SDKs installed in your frontend and backend, with a datafile strategy that keeps decisions fast and consistent across requests.
4.9 / 5Optimizely developers for tests that ship on schedule.
Optimizely developers who build variants in Web Experimentation and wire the Feature Experimentation SDK into your website and product.
Selected work, in motion.
Thoughtful experiences, ready for a closer look.Ideas stuck in the queue.
Most testing programmes are limited by development time, not by ideas.
BeforeAfter
Test ideas waiting months for a developerVariants built and checked by a team that does this weekly
Custom JavaScript variants breaking on the next deployVariant code reviewed, versioned and tested against your releases
Server-side tests out of reachFeature Experimentation SDK in your code, with flags, variables and events
Audiences defined in three different placesAttributes passed to Optimizely from one source
What's included
The build side of testing.
Your team owns the ideas and the decisions. We write and ship the code between them.
Deliver each experiment
Web variants written as clean custom code, or feature tests built behind flags, released on a schedule your product team can plan around.
Implement audiences
Login state, plan and account data passed to Optimizely as attributes, so audiences target real customers instead of cookie guesses.
Validate every release
Bucketing, event firing and variant rendering checked on each device before launch, and again whenever your site deploys new code.
Security, by consideration.
Trust is part of the build.
For your Optimizely project, we consider publishing access, experiments, audience data and connected services as part of one connected build.
See our approachConnected systems. Considered safeguards.
Changes you can trace.
GitHub workflows, peer review and dependency checks bring decisions into the release process.
Protected in transit.
Certificate configuration, HTTPS and secure headers help protect the path between your users and your systems.
Intelligence with limits.
Scoped tool access, validated inputs and human approval where automated actions carry consequences.
Built, checked, shipped.
Each experiment moves through the same three steps.
- 01
Scope the build
We review the test brief, pick Web or Feature Experimentation and estimate the build.
- Technical brief
- Product choice
- Build estimate
- 02
Build and QA
Variants coded, reviewed and tested across browsers, devices and audiences.
- Variant code
- QA report
- Preview links
- 03
Release and watch
Launch, confirm the first events arrive and monitor until the test ends.
- Launch checklist
- Event checks
- Release notes
Built for what’s next.
Built to driveMore sign-ups.
Built to driveMore memberships.
Built to driveBetter-qualified leads.
Built to driveMore qualified candidates.
Built to driveMore enquiries.
Built to driveMore qualified demos.
Built to driveMore workplace demos.
Built to driveMore business accounts.
Built to driveMore free trials.
Built to driveMore building owners.
Built to driveMore free sign-ups.
Private Villas MexicoBuilt to driveMore direct bookings.
Built to driveMore committed players.
Built to driveMore returning customers.
Built to driveMore meaningful demos.
Built to driveBetter talent connections.
Built to driveMore course creators.
Built to driveMore product discovery.
Trusted across our practice
Working together. In their words.
Independent reviews. Long-term working relationships.
“After a website (re)launch, they are also always accessible and happy to help. I highly recommend everyone who is looking for a new and more stable website in Webflow, to work with Stega!”
“Stega Creative team not only understood our needs and vision for the websites, but they also came up with improvements.”
“We’ve been working with Stega & Gabriel for the last two years. Cannot recommend them enough. They’re responsive, professional & an asset.”
Optimizely development questions.
A few things worth discussing before your Optimizely development takes shape.
What is the difference between Optimizely Web Experimentation and Feature Experimentation?
Optimizely Web Experimentation changes pages in the browser through a JavaScript snippet and visual editor. Feature Experimentation runs tests inside your code through SDKs, on the server or in apps, using flags. Web suits marketing pages and quick changes. Feature suits product logic, pricing, search and anything the snippet cannot reach.
Do we need a developer to run Optimizely experiments?
You need a developer for most Optimizely experiments beyond text and colour swaps. The visual editor handles simple changes, but new layouts, new components and anything in Feature Experimentation need code. A developer who knows Optimizely also keeps tests from breaking when your site ships new releases.
How do you prevent flicker in Optimizely Web Experimentation?
Flicker in Optimizely Web Experimentation is prevented by loading the snippet synchronously in the page head and keeping variant code light. We also watch snippet size, use Performance Edge where it fits and avoid variants that wait on slow elements. For heavy changes, a server-side test is often cleaner.
How much does Optimizely development cost?
Cost depends on how many tests you run each month, how complex the variants are and whether the Feature Experimentation SDK needs integrating first. We scope a first batch of tests so you can see the cost per experiment.
Revamp today.The 
way.
Your ambition. Our collective craft.
Strategy, design and technology, working as one.