The screen is blank, but the content request succeeded.
A successful response does not tell you whether the interface can display the result. I investigate layout, view lifecycle, and the integrations involved in rendering the screen.
Development / iOS debugging & integrations
Find the cause behind the iOS failure.
I investigate difficult iOS bugs across SwiftUI, UIKit, SDK integrations, and configuration. I trace the failure through the layers involved, implement fixes in the code, and explain what can be contained immediately and what needs an app release.
When to bring me in
A concrete problem to work through.
Ads disappear, turn white, or fail after a refactor.
The cause may sit in ad-view ownership, refresh behavior, creative dimensions, request configuration, or a bidding partner. I follow the behavior across the app and the integration.
Several failures look like one production incident.
Different defects can mask or imitate one another. I separate the symptoms, test explanations against the implementation, and identify which layer needs each change.
Relevant work
The experience behind this work.
I’m Alex Severianov, founder of X91 Tech. These cases describe my own contribution in existing product teams.
Explore →
A blank feed, white ads, and four separate defects
I traced failures across SwiftUI, an ad SDK, and bidder configuration. A server-side mitigation contained the immediate ad failure across existing app versions; code fixes were prepared for the next regular release.
Explore →Rebuilding the ad integration
I built consent-based loading for Google Ad Manager and other ad providers, added bidding, and fixed request, configuration, and display issues.
Working together
From the starting point to the implementation.
Reconstruct the failure
We gather affected versions, reproduction steps, logs, recent changes, and the relevant app and SDK configuration. I identify what is known and what still needs checking.
Trace the responsible layers
I inspect the app code, view lifecycle, integration behavior, and relevant requests or configuration. I test the explanation before treating a plausible cause as the answer.
Contain, fix, and verify
I assess available mitigations, implement the agreed fixes, and check the affected behavior. The handover explains the cause, changes, remaining uncertainty, and release implications.
What you get
A documented diagnosis, scoped code fixes or configuration changes, verification of the affected behavior, and a clear explanation for the team. The evidence may show that an app release is required. Availability, scope, and price are agreed before work starts.
Before we start
Questions about the work.
Can the problem be fixed without an app release?
Sometimes a configuration change can contain a failure, as in the ad incident above. That depends on the cause and the controls already available. I investigate before recommending a mitigation or release.
Do you handle implementation as well as diagnosis?
Yes. I work in the codebase and can implement the agreed changes, review their effect, and document the findings for the team.
Is this an emergency support service?
This page describes the work I do, rather than a guaranteed response time or on-call contract. Email the impact and timing you need, and I will confirm whether I can help.
Let’s talkBring me
Bring me
the problem.
An app that needs building. A migration that needs someone to own it. Numbers that don’t make sense. A product decision your team can’t resolve. Tell me what’s happening. I’ll tell you whether I’m the right person, how I’d approach it, and what the work would cost.
Email Alex ↗alex@x91tech.comYou bring the context. I take the work seriously.
Not sure what you’d get? See sample reports →