iOS Architect — 13 years
I make large iOS apps faster, more stable, and cheaper to maintain — from architecture and live-streaming SDKs to launch-time and frame-level performance.
Fixed-fee Performance audits from $500 (full app $750, 5 business days); architecture reviews from $1,800. Replies within one business day.
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Fixed-scope assessments or ongoing hands-on work. Every engagement is remote, priced in USD, and starts with a short call to confirm scope. Fixed-scope prices are one-off fees for work I do with you; the ongoing contract is billed weekly. The $1 templates are self-serve downloads and include no consulting time.
For apps that launch slowly, drop frames in core flows, or show rising memory and crashes. One production app, one build. Single-flow audit only: $500 fixed, 3 business days.
For growing codebases, slowing feature delivery, and module boundaries that no longer hold. One app or SDK.
Embedded with your team for feature delivery, performance escalations, and App Store submission support. $750 per week at the minimum; billed weekly.
Terms for fixed-scope work: one revision and one 60-minute walkthrough are included. 50% at kickoff, 50% on delivery. Quotes are valid for 30 days. A mutual NDA is available on request. What you provide: read-only repository access or a buildable archive, plus the flow and device class where the problem appears.
Four steps, each with a written output. Fixed-scope engagements do not run on an open-ended hourly meter.
Email the app, the flow that feels slow or unstable, the device class, and your timeline. A screen recording or a trace is enough to start.
Within one business day you get a 30-minute call slot and a fixed quote. If the problem is outside what I can measure or fix, I say so and charge nothing.
Read-only repository access or a buildable archive, a mutual NDA if you need one, and the agreed baseline. I measure before I change anything.
You get the written report, the prioritized backlog, and the traces, then a 60-minute walkthrough. One revision is included.
Full-time platform roles, 2012–present. These are not paid consulting engagements; the case studies below are drawn from this employed work and are labeled as such.
ByteDance (TikTok's parent company) · Live-streaming platform, 300M+ DAU
Led the three-year consolidation of two parallel iOS live SDKs into one shared codebase of 2M+ lines.
2M+ lines consolidated ~90% lower maintenance cost Zero P3+ incidents
Client-side lead · 30+ iOS engineers
Coordinated client-side delivery for 32 live matches with 30+ iOS engineers across the platform.
32 live matches Zero major incidents
Developer experience · Live SDK platform
Reworked the build graph and SDK packaging so teams could compile and integrate without waiting on the platform group.
50 → 10 min full compile 5 → 1 day host-app integration
Online wealth platform · 2.2M users, RMB 110B+ cumulative transactions
Built the Swift architecture and component framework from zero for a fully Swift app, then optimized package size and launch time.
0 → 1 Swift architecture 70% less code after componentization
Employment, not consulting: the four items above and the three case studies are results from full-time platform roles. They are not paid consulting engagements. Client names, internal system names, and absolute business metrics are withheld; the measurement methods and relative changes are published.
Notes on architecture and performance, plus practical walkthroughs.
Text summary: a 45-second walkthrough of the shipping stack behind the iOS performance kits and architecture guides on this page — the tooling, packaging, and release path used to build and ship them.
The questions that come up before a first email.
Read-only repository access or a buildable archive, plus a build or TestFlight link that reproduces the problem. For a performance audit I also need the flow, the device class, and the approximate time when the symptom appears.
Yes. A mutual NDA is available on request and is signed before repository access is granted.
A written report in PDF and Markdown, the prioritized backlog, the traces and measurements behind each finding, and a 60-minute walkthrough. The report states the baseline and the measurement definition so another engineer can reproduce the numbers.
One revision per fixed-scope engagement. A revision covers corrections to the report and a re-check of the same scope, not a new app or a new flow.
50% at kickoff and 50% on delivery for fixed-scope work. The ongoing contract is billed weekly at $50 per hour with a 15-hour weekly minimum.
30 days from the date of the quote. If the scope changes, the quote is reissued before work continues.
No. I guarantee the measurement method, the written deliverables, and the revision. The report separates what changed, what did not change, and what remains uncertain.
An audit is a fixed-scope, fixed-price deliverable that ends with a report. The ongoing contract is embedded work at $50 per hour, minimum 15 hours per week, for teams that need hands-on delivery after the audit.
Tell me about the app, the problem, and your timeline. I reply within one business day with a scope and a fixed quote. Currently accepting new audits and reviews.