Mobile Performance Training for Development Teams

We started this program because too many talented developers were struggling with app performance issues they'd never been taught to solve. Real hands-on learning, not theory-heavy lectures. Our next cohort begins October 2025.

Why We Built This Differently

Most performance courses give you theory and send you off. That never sat right with us. When apps crash or slow down in production, developers need practical troubleshooting skills, not academic concepts.

Our program emerged from watching talented developers hit walls with memory leaks, frame drops, and battery drain. They knew how to code but weren't taught how apps actually behave under stress.

Every module includes real profiling sessions with actual apps that have performance problems. You'll diagnose issues, implement fixes, and measure results—same workflow you'll use on the job.

Developer working on mobile app performance optimization

How the Program Developed

We didn't start with a curriculum. We started with frustrated developers and broken apps.

Early 2023

The First Workshop

Started with a single weekend workshop for eight developers in Sheffield who kept hitting the same performance walls. We brought real problem apps and worked through them together. The feedback was clear—people wanted more of this.

Autumn 2023

Building Structure

Expanded to a six-week evening program. Added modules on memory profiling, rendering optimization, and network efficiency. Twenty developers joined, mostly mid-level looking to level up their debugging skills.

Spring 2024

Remote Option Launch

Developers outside Sheffield kept asking to join, so we added remote sessions. Tricky at first—performance profiling works better in person—but we figured out screen sharing setups that actually worked.

October 2025

Next Cohort

Our refined twelve-week program covers everything from initial profiling to production monitoring. Mix of in-person and remote participants, with office hours for personalized help. Applications open August 2025.

Who You'll Learn From

Everyone teaching this program works on actual client projects. They're not full-time educators—they're performance engineers who happen to be good at explaining things.

Callum Rafferty, Lead Performance Engineer

Callum Rafferty

Lead Performance Engineer

Spent eight years fixing slow apps for e-commerce clients. Started teaching after getting tired of explaining the same memory management concepts repeatedly. Prefers live debugging over slides.

Freja Lindqvist, Mobile Architecture Specialist

Freja Lindqvist

Mobile Architecture Specialist

Works mainly with startups whose apps grew faster than their performance budgets. Teaches the network optimization module. Known for finding creative solutions to seemingly impossible battery drain problems.

Aisling Murtagh, Rendering Performance Lead

Aisling Murtagh

Rendering Performance Lead

Specializes in UI performance issues—dropped frames, janky scrolling, slow animations. Previously worked on graphics-heavy gaming apps. Handles the rendering and animation modules with real examples from past projects.

Real Progress from Past Participants

We don't track job placements or salary increases. But we do stay in touch with people who've gone through the program. Here's what actually happened for one developer.

Developer reviewing app performance metrics

From Guesswork to Systematic Debugging

The Challenge

Maya joined our Spring 2024 cohort after spending weeks trying to fix memory leaks in her team's app. She was making changes based on hunches, running the app, and hoping for improvement. No structured approach.

The Process

During week three, she brought her actual problem app to office hours. We walked through proper memory profiling—identifying leak patterns, tracing object lifecycles, understanding retention graphs. Took about forty minutes to find the root cause.

Current Situation

Maya now runs performance audits for her entire team. She mentioned recently that she rarely guesses anymore—just profiles, analyzes data, and fixes systematically. That's exactly what we hoped would happen.

Applications Open August 2025

Our October cohort has twenty spots—ten in-person in Sheffield, ten remote. If you're a developer who wants to get better at diagnosing and fixing mobile performance issues, we'd be happy to hear from you.

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