SaaS architecture, API development, iOS and Android apps and scalable web/e-commerce systems.
Uygun
Senior Software Engineer & Product Developer
With 20 years of engineering experience, I build scalable SaaS platforms, high-performance backend systems, and mobile apps live on the App Store and Google Play. I take end-to-end technical ownership from system design to deployment.
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live
Experience
20 years
Expertise
SaaS · Full Stack · iOS · Android
Work Style
Remote-first
§ 01 · App Store & Google Play
Apps live on the App Store and Google Play.
17 mobile apps I built end-to-end, from idea to store launch; 12 of them on both the App Store and Google Play. Each live, with real users and regular updates.
All My AppsOn screen
What the apps actually look like.
Live App Store screenshots, refreshed automatically after every release. What you see here is the exact frame sitting on the store listing.
§ 02
What I Do
9 services across categories
01 / Product & System Development
01/4
SaaS Architecture & Platform Engineering
I lead SaaS platform architecture and own system evolution from domain modeling through reliable production delivery.
- Architecture blueprint and modernization roadmap
- Scalability, resiliency, and cost strategy
- Technical debt reduction with measurable milestones
Detail page →
02/4
API Engineering & Integration
I build API-first backend systems with clear contracts, secure authentication, and integration patterns that remain maintainable as complexity grows.
- REST API design and versioning strategy
- JWT and OAuth2 authentication and authorization
- Third-party integrations and event-driven workflows
Detail page →
03/4
AI & LLM Integration
I add LLM-powered features to your product: RAG, smart assistants, automated content and agent workflows. From prototype to production quality.
- Grounded, source-citing answers with RAG
- Agent and tool-calling workflows
- Cost, latency and token observability
Detail page →
04/4
Fractional CTO & Technical Leadership
CTO-level technical ownership without hiring a full-time CTO. No management layer added; direct decisions, direct responsibility.
- Architecture decisions and technical roadmap
- Codebase and team audits
- Pre-investment technical due diligence
Detail page →
02 / Mobile Development
01/2
iOS App Development
I deliver production-grade iOS applications with a focus on architecture, performance, and release reliability. 17 apps live on the App Store.
- Modular app architecture and state management
- Performance profiling and stability hardening
- App Store release management and lifecycle updates
Detail page →
02/2
Android App Development
I build modern, stable Android apps with Kotlin and Jetpack Compose. End-to-end ownership from idea to Google Play release. 13 apps live on Google Play.
- Modern UI with Kotlin + Jetpack Compose
- Google Play Billing subscription flows
- Room / DataStore data layer
Detail page →
03 / E-commerce & WordPress Solutions
01/3
WooCommerce Platform Engineering
I design WooCommerce implementations for teams that need reliable operations, custom business flows, and sustainable growth.
- Payment and shipping integrations
- Custom catalog, cart, and checkout flows
- Performance and conversion-oriented optimization
Detail page →
02/3
Custom WordPress Plugin Engineering
I build secure, maintainable plugins for business-critical capabilities that off-the-shelf tools cannot cover.
- Plugin architecture and domain modeling
- Security, permissions, and data integrity
- Long-term compatibility and maintenance
Detail page →
03/3
Performance & Reliability Optimization
I identify system bottlenecks, prioritize fixes by impact, and improve performance consistency in production.
- Caching and CDN architecture
- Database and application-layer optimization
- Core Web Vitals, TTFB, and runtime monitoring
Detail page →
§ 03
Featured Projects
Total projects across industries: 77 projects
P.01
E-commerce
Pikap Dizayn
WooCommerce project rebuilt in 2026: a 753 product catalogue filtered by vehicle model.
P.02
E-commerce
Kokumakinaları
A custom WooCommerce theme for scent-diffuser brand Eromer, built to collect quotes rather than process checkouts.
P.03
WordPress
CosmoEN
A custom WordPress theme for CosmoEN, the Turkish-language home of BBC programming, driving both the show catalogue and the daily TV schedule.
P.04
WordPress
WeAreBrandex
I led the architecture and delivery of a high-performance WordPress platform for Brandex, including scalable content operations and production-ready deployment standards. This improved load performance and made ongoing publishing operations more scalable.
P.05
E-commerce
Mother to Mother
I designed and delivered a WooCommerce marketplace architecture for maternal and baby products, with API integrations and scalable catalog operations. This reduced checkout friction and supported continued catalog growth.
P.06
E-commerce
Halıysa
I built an API-ready WooCommerce marketplace for carpets and woven products, focused on scalable search, catalog performance, and checkout reliability. This improved product discoverability and stabilized transaction flows as inventory expanded.
§ 04
Frequently Asked Questions
7 questions
Yes. I work remote-first and collaborate with distributed teams with a focus on consistent delivery.
Yes. I have deep WordPress/WooCommerce expertise, but my primary focus is product and system development.
Send a brief project summary. I'll create a clear roadmap based on your goals, current state and timeline.
It depends on the project: a day rate for short consulting engagements and a fixed quote for well-defined scopes. Once the scope is clear, I share a transparent price and timeline.
PHP and API-based architectures on the backend and SaaS side; Swift/SwiftUI for iOS and Kotlin/Jetpack Compose for Android; WordPress/WooCommerce for web and e-commerce, with a headless (Next.js) approach where it fits.
Small improvements take a few days; a defined feature or a mobile app usually takes a few weeks. After the first assessment, I lay out a clear schedule with milestones.
Let’s talk about your project.
Leave a brief summary; I’ll get back to you within 24 hours.