
Daniil
From Slovakia (UTC+2)
Lemon.io stats
5
projects done2148
hours worked1
offers now 🔥Daniil – iOS, Swift, Objective C
A Senior iOS developer with 12 years of expertise, Daniil is comfortable in both Tech and Team Lead positions. He has been part of the mobile development landscape from its early stages, bringing a wealth of experience to the table. Daniil has a business-oriented approach and a clear vision of how the architecture of certain apps should look like. Outside of work, he enjoys sci-fi and snowboarding and has been especially into AI lately, boasting some LLM-heavy pet projects.
13 years of commercial experience in
Main technologies
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Let’s get started today!Experience Highlights
Tech Lead
Mobile specialized CRM system for managing sales and rental of medical equipment in the healthcare sector. Responsible for the full development cycle, product scaling.
- Led full development cycle of a specialized Healthcare CRM for managing sales & rentals of medical equipment;
- Designed scalable architecture (Firebase backend, iOS client) wit roadmap to Android/Web;
- Built and managed technical team: hiring, mentoring, agile processes, code quality;
- Delivered complex features:
- Inventory & Transfer Tracking (shipments between suppliers, hospitals, surgeons);
- Billing System with integrated PDF editor, auto-fill, digital signatures, Firebase storage, email sending;
- Task & Event Management (surgeries, operations, admin tasks);
- User Profiles & Role Management (sales, managers, admins);
- Notifications & Real-time updates with local caching for offline access;
- Collaborated with stakeholders (surgeons, suppliers, hospitals) to align business needs with technical solutions;
- Supported system scaling for multiple markets and ensured high performance & reliability.
Tech Lead
Screen time management app that helps users control their device usage, minimize distractions, and boost productivity. It offers features like app blocking during focus sessions, setting daily limits, real-time feedback with a Focus Score, and schedule automation
- Designed and built the iOS app using Swift and SwiftUI, creating a smooth and user-friendly experience for managing screen time;
- Developed backend services and APIs for real-time data syncing, user authentication, usage tracking, and scheduling;
- Implemented app-blocking and timer features that work seamlessly with iOS system frameworks;
- Built analytics and reporting tools to give users insights and focus scores based on their usage;
- Integrated system APIs and third-party services like iOS Focus Mode for better automation and customization;
- Focused on data privacy by storing data locally and minimizing cloud usage;
- Wrote unit and integration tests to ensure app stability across iOS versions;
- Fixed complex issues in both front-end and backend to improve performance and experience;
- Worked closely with design and product teams in an Agile environment.
Staff Software Engineer, iOS
Marketplace for freelancers, AI Copilot, Flutter migration.
- Migrated 60% of WebView features to Flutter, achieving an 80% improvement in performance and enhancing maintainability;
- Led the development and integration of an AI Assistant, delivering automation and improving app functionality;
- Designed and maintained core Flutter packages, enabling reusable components and a scalable cross-platform architecture for mobile, web, and desktop platforms;
- Delivered Flutter solutions for native iOS and Android, ensuring cross-platform consistency and high-quality user experiences;
- Streamlined architecture and delivery processes, improving development efficiency and accelerating feature rollouts;
- Enhanced iOS applications using modern development tools, integrating seamlessly with Flutter for a cohesive experience;
- Focused on performance optimization, improving app responsiveness and scalability for a global user base.
Engineering Manager / iOS Tech Lead
This is a video streaming service that offers the same features as the Tango app.
- Led strategic planning for mobile application development, aligning team efforts with business objectives and driving innovation'
- Built and scaled high-performing teams, fostering collaboration, growth, and excellence in delivery;
- Established transparent delivery workflows and implemented OKR methodology, ensuring alignment with strategic goals and measurable team performance;
- Elevated code quality and optimised performance, resulting in a 200% increase in daily active users and a 90% improvement in user satisfaction;
- Introduced 1:1 sessions and Personal Development Plans (PDPs), supporting individual growth and aligning goals with organizational priorities;
- Standardized and optimised development processes, improving efficiency and consistency across projects;
- Enhanced collaboration across cross-functional teams, ensuring seamless product delivery and alignment with organizational objectives;
- Designed automation and monitoring systems, improving transparency, quality metrics, and process reliability;
- Continuously evaluated industry trends and emerging technologies to drive innovation and maintain technical relevance.
Head of Mobile / iOS Team Lead
The company proposes to buy, store, exchange, and move traditional or cryptocurrencies at over-the-counter (OTC) and interbank rates in the app and seamlessly spend them using the new Mastercard or the Visa card.
- Led strategic planning for mobile app development, aligning team initiatives with business objectives and driving technological innovation;
- Scaled the team from 4 to 17 developers, building a high-performance culture and fostering collaboration and growth;
- Introduced and integrated OKR methodology, achieving 90% of quarterly objectives through clear goal alignment and regular tracking;
- Developed and implemented a Technical Roadmap, delivering scalable solutions and aligning projects with long-term strategic goals;
- Standardized and optimized application development processes, increasing efficiency and consistency across platforms;
- Designed and deployed a comprehensive Design System for Android and iOS, reducing development time by 70% and ensuring a unified user experience;
- Implemented code quality tools like Codebeat, improving code maintainability and stability, which contributed to a 200% increase in daily active users;
- Supported team members in publishing technical articles on the corporate blog, enhancing knowledge sharing and showcasing team expertise;
- Created and improved automation and monitoring systems, enhancing transparency, quality metrics, and process reliability;
- Fostered cross-departmental collaboration, ensuring seamless product delivery and alignment with business goals.
Software Development Manager / Tech Lead
A mobile trading app that monitors market movement in real-time using cutting-edge charting tools and indicators.
- Built and scaled an R&D team from 4 to 45 developers;
- Implemented Personal Development Plans (PDPs), fostering team growth and aligning goals with organizational objectives;
- Designed a Technical Roadmap, aligning technical strategies with the company’s long-term vision;
- Established a streamlined Delivery Process, doubling development speed and improving workflow efficiency;
- Partnered with clients to align on strategic priorities, roadmap development, and product enhancements;
- Led all project phases, ensuring adherence to best practices and timely delivery;
- Analyzed customer feedback to create actionable recommendations, improving platform functionality and user satisfaction.
iOS Developer / Team Lead / Co-Founder
The app provides direct communications with influencers and specialists in any domain.
- Led mobile development team;
- Was involved in every project phase, from approving new features to writing code that supports iOS 10 - 12;
- Wrote task lists for the iOS developers;
- Did task estimations;
- Collaborated with the design and development team on direction and user experience;
- Developed and debugged via Xcode and Instruments;
- Improved, refactored, and stabilized the existing framework.