Hire the Best iOS Developers
in Portugal

I've been working as an iOS Developer for 14 years. Experienced in both Swift and Objective-C, I have developed apps for the iPhone, iPad, Apple Watch and Apple TV. I've worked on Android too, both Java and Kotlin. I have submitted many apps to the App Store, with complex interfaces, extensive web service communication, and multimedia content. Some of these apps got good references in the press, and one of them, Back in Time, was selected by The New York Times as one of the Top 10 iPad apps of the year.

🎖️ Top Rated Plus on Upwork (Top 3%) ✔️ 100% Job Success – Proven track record of client satisfaction ✔️ 20+ Successful Projects completed ✔️ 1,000+ Hours worked and still counting I’m an experienced Software Engineer with over 8 years of expertise, specializing in Apple platforms for the past 5 years, with a focus on iOS development. My tech stack enables me to deliver innovative, high-performing, scalable apps. With 3 years of graphic design experience, I ensure pixel-perfect execution, and my 5 years in management helps me lead teams and optimize workflows. I’ve consistently exceeded client expectations across various industries with outstanding performance and engagement. Tech Stack & Approach: 👾 iOS Development: Expert in Swift and SwiftUI for building native iOS applications optimized for the latest iOS updates. Proficient in modern design patterns such as MVVM, VIPER, TCA, and Clean Architecture, ensuring scalable, maintainable, and high-performance apps with clean code and a solid structure. 👾 watchOS, tvOS, macOS, iPadOS, visionOS: Skilled in developing for Apple’s broader ecosystem, creating seamless apps for watchOS, tvOS, macOS, iPadOS, and the latest visionOS. Focused on delivering apps that fully leverage the unique capabilities of each platform for an optimized user experience. Tools & Technologies: 🥷🏻 iOS Tech Stack: Swift, SwiftUI, UIKit, CoreData, Combine, AVFoundation, CoreLocation, MapKit, HealthKit, Animations, Bluetooth, NFC, CallKit, StoreKit, PushKit, Push Notifications 🥌 Design Tools: Figma, Adobe Creative Suite (for UI/UX collaboration) 📎 Backend: RESTful APIs, Firebase, GraphQL 📎 CI/CD: Fastlane, Jenkins, Git, GitHub 📎 Project Management: JIRA, Trello, Slack, Monday 📎 Testing & Automation: XCTest, Snapshot Testing I’m proficient in Agile/Scrum methodologies with a deep understanding of the full app development lifecycle—from concept to deployment and continuous improvement. I excel in troubleshooting, team management, and mentoring developers, fostering faster, more efficient workflows. My goal is to deliver high-quality products and solve complex technical challenges to drive business growth. 💬 Invite me for a free 30-minute consultation to discuss how I can help your project succeed.

I build high-performance iOS apps that drive real business impact. As a Top Rated Plus freelancer with a proven track record, I specialize in native Swift development, emerging AI/LLM integrations, and immersive AR experiences. With $200+ earned on Upwork and 93% client recommendation rate, I've consistently delivered cutting-edge solutions for clients across fintech, sports, education, and enterprise sectors. Core expertise: Native iOS development: Swift, SwiftUI, UIKit, Combine, RxSwift AI integration: LLM APIs, RAG (Retrieval-Augmented Generation), prompt engineering Advanced AR/3D: ARKit, 3D avatar rigging in Blender, model optimization & import Backend integration: REST APIs, GraphQL, Firebase, secure authentication Performance optimization: 98% crash-free rates, 25% UX improvements Why work with me: Hyper-responsive – Available M-F business hours with rapid turnarounds Ownership mindset – I treat your app like my own, ensuring production-grade quality Future-ready tech stack – Experienced with the latest frameworks (SwiftUI, LLMs, ARKit) Proven results – 100% job success score over 18+ months, top 5% performer Let's build something exceptional together. Reach out with your iOS project details, and I'll provide a transparent assessment and timeline within 24 hours.

I build high performing Mobile Apps for ambitious brands. If you need a reliable Mobile App Developer or Flutter Developer, I deliver results as a dedicated Cross-Platform Developer, iOS Developer, and Android Developer. Buggy interfaces, crashing screens, and messy State Management are killing your user retention and eating into your profit margins. Let me fix that. I specialize in iOS & Android Development that scales, using a rigorous, manual coding approach to ensure rock-solid Mobile Architecture. I do not rely on brittle, auto-generated AI shortcuts; I build the foundational infrastructure from scratch so your product actually works and scales without breaking. Whether you need immediate Technical Debt Rescue for a stalled app, intensive Legacy Code Refactoring, or rapid MVP Development engineered correctly from day one, I deliver Custom Mobile Solutions focused on flawless user experiences and App Performance Optimization. Here is how I drive real business results through clear, high-quality app development: Bringing your new app idea to life: Starting entirely from scratch? I take your vision and build a rock-solid app from day one. Instead of rushing a messy prototype, I write clean, custom code from the ground up so you launch a polished product that actually works saving you from expensive rewrites down the road. Making it easy for users to pay you: I build smooth, simple checkout screens and subscription setups. If your payment process is frustrating, people will leave without buying. I fix those roadblocks so your app generates reliable revenue and you stop losing sales at the finish line. Fixing broken apps to save your ratings: Have an app that crashes, lags, or freezes constantly? Users will delete it and leave bad reviews. I step in to rescue messy code and clean it up from the inside out. The result is a stable, crash-free app that keeps your users happy and protects your brand's reputation. Building fast apps that grow with you: Nobody likes a slow app. I write solid infrastructure by hand without relying on lazy AI shortcuts so your product stays lightning-fast. Whether you have a hundred users or a hundred thousand, your app will feel smooth, responsive, and ready for growth. Stop losing users to slow load times and broken features. Message me with your biggest current app bottleneck or your Figma design link, and I will give you a free, straightforward technical assessment on exactly what it will take to fix it or launch it. Keywords: Senior Mobile Developer, Flutter Architect, Dart FFI, iOS Swift, Windows Desktop, macOS Native, Clean Architecture, BLoC Pattern, Supabase, CI/CD, App Performance, Technical Debt Rescue.Mobile App Developer, Flutter Developer, iOS and Android App Development, Cross-Platform Developer, Mobile Apps, Mobile Architecture. Senior Mobile Developer, MVP Development, App Performance Optimization, Firebase Integration, Supabase Expert, CI/CD Pipelines, GitHub Actions, Legacy Code Refactoring,Flutter Architect, Clean Architecture, BLoC Pattern, State Management, Dart FFI, C++ Integration, Desktop App Development, Technical Debt Rescue.

I am a Senior DevOps Engineer with over 10 years of deep, hands-on experience in Microsoft Azure, Azure DevOps, CI/CD automation, Infrastructure as Code, performance optimization, and AI-driven workflow automation. My work focuses on building scalable, secure, reliable cloud systems that significantly improve deployment frequency, reduce downtime, minimize manual tasks, and enable fast, repeatable software delivery. My specialty is designing highly automated Azure environments using Azure DevOps Pipelines (YAML), Bicep, ARM, Terraform (Azure-only), Python, PowerShell, Bash, and modern DevOps engineering practices. I build systems that eliminate friction in development, increase efficiency, and deliver measurable, meaningful business results. Clients consistently hire — and rehire — me because I solve difficult technical problems quickly, deliver clean and maintainable solutions, and communicate clearly at both the technical and business level. When I take on a project, I focus on measurable improvements that impact real business outcomes: faster releases, fewer incidents, lower cloud spend, and smoother operations. ⸻ ⭐ Client Praise • “Fixed our CI/CD pipeline after two senior engineers failed. Delivered a full Azure automation solution in 24 hours.” • “Reduced deployment time from 40 minutes to 5 minutes — a massive productivity boost.” • “Transformed our Azure environment using Bicep and YAML pipelines. Faster, more secure, and easier to manage.” ⸻ 🔧 Core Expertise & Technical Skills 🔥 Azure Cloud & DevOps • Azure Cloud Architecture, Azure Administration, Azure Networking • Azure DevOps Engineer: Repos, Pipelines, Boards, Artifacts • CI/CD automation for .NET, Node.js, React, TypeScript, Python • YAML pipelines, multi-stage environments, gated approvals • Infrastructure as Code: Bicep, ARM, Terraform (Azure only) • Cloud DevOps optimization, release automation, agent scaling • Policy as Code, security automation, compliance automation • DevOps engineering for SaaS, ERP, FinTech, workflow systems Performance Improvements Delivered: • Deployment frequency increased 3–10× • Build and release times reduced by 50–85% • Infrastructure provisioning cut from hours to minutes • Zero-drift Azure environments using Bicep IaC ⸻ 🤖 AI & Automation (LLMs, RAG, AI Foundry, Ollama, n8n) I integrate AI-driven automation directly into DevOps workflows to create intelligent, self-improving systems. • Azure AI Foundry orchestration & LLM lifecycle automation • LLM-driven code validation, policy checks, and release notes • RAG pipelines for internal engineering knowledge & troubleshooting • Ollama self-hosted LLMs for secure offline inference • n8n automation for approvals, cloud tasks, notifications, event routing • ChatOps integrations for deployment commands and system intelligence • AI-based log analysis, anomaly detection, and operational insights Business Impact: • Saved teams 100+ engineering hours per quarter • Reduced deployment failures by 30–40% • Accelerated onboarding and knowledge transfer by 25–30% • Automated documentation generation → saved 6–10 hours/month ⸻ 📈 Monitoring, Observability & Performance • NewRelic, DataDog, Grafana, Prometheus • Zabbix, Graylog, ELK stack • Centralized logging, metrics, SLO/SLI design • Performance optimization, capacity planning, load analysis Impact: • MTTR reduced by 40–70% • Production incidents lowered through proactive detection • Improved application response time by 20–35% ⸻ 🔐 Security, Governance & DevSecOps • Azure IAM, RBAC, Conditional Access, SSO • Secure CI/CD with Checkov, Synopsys Blackduck, Polaris, AquaSec, Wiz • Azure Defender, Defender for Cloud • Vulnerability scanning, dependency checks, secure IaC • Identity governance, role design, audit compliance workflows Results: • Achieved fully automated DevSecOps pipelines • Reduced critical vulnerabilities by up to 90% • Ensured compliance for industries like Finance, Healthcare, Legal ⸻ 🧩 Automation, Scripting, Integrations & Databases • Python automation scripts • PowerShell & Bash for infrastructure tasks • GitHub Actions, GitLab CI, Azure DevOps YAML • Docker for reproducible build environments • PostgreSQL, MySQL, MSSQL, Cosmos DB • Full-stack workflow support for .NET, Java, Node.js, React ⸻ 🌍 Industry Expertise Finance, FinTech, SaaS, ERP, E-Commerce, Healthcare, Medical, Logistics, Telecom, Energy, Workflow Automation, Document Management, Business Services. My systems are built for security, cost efficiency, maintainability, and long-term scalability, especially for mid-sized software companies. ⸻ 💬 Let’s Work Together If you’re looking for a DevOps Engineer, Azure DevOps Engineer, Cloud Automation Engineer, CI/CD Specialist, Infrastructure as Code Expert, or AI-driven workflow automation consultant, I can help you design high-quality solutions that accelerate your business and reduce operational load.

Greetings, With over 15 years steeped in the world of software development, I’ve dedicated a significant portion of my professional journey to crafting high-quality iOS applications. The path from conceptualizing an idea to witnessing its tangible transformation on an iPhone or iPad is one I've walked many times. As the director of a software testing studio, I bring not only development expertise to the table but also a rigorous standard for software quality and performance. Every application tells a story, and my team and I are committed to ensuring that story is told seamlessly. If you're seeking a seasoned perspective and a reliable hand in bringing your iOS vision to fruition, I invite you to connect. Let's embark on this journey together. Warm regards. Kiryl