# Haskel Ash

> Senior Software Engineer | Full-Stack Development | Swift & SwiftUI | React & React Native | Ruby on Rails | System Design & Architecture | Scalable Infrastructure | API Design | Performance Optimization | Shopify

Location: Los Angeles, California, United States
Profile: https://flows.cv/haskel

Highly skilled, solution-focused, and collaborative full-stack software engineer with 10+ years of experience crafting secure and scalable user journeys across mobile and web platforms. Known for technical versatility, clear communication, and strong mentoring, I thrive on building robust solutions - from mobile point-of-sale systems to real-time video editing engines - with impact and performance at the core.

Experienced in contributing to all phases of the development lifecycle, from architecture and design, to implementation and testing, to deployment. I bring deep expertise in mobile development and frontend systems, consistently driving projects forward through strong collaboration and technical insight.

Skills:
🎯 Full-stack mobile & web engineering
🎯 API & backend architecture (REST & GraphQL)
🎯 Native iOS (Swift, SwiftUI, UIKit, Objective-C, Metal)
🎯 React & React Native
🎯 Ruby on Rails
🎯 Secure authentication & app access flows
🎯 CI/CD pipelines & testing strategies
🎯 GPU shaders & real-time effects
🎯 Cross-platform feature parity
🎯 Technical leadership, mentorship & documentation
🎯 Team collaboration & solving ambiguous problems
🎯 Code quality, reviews, & internal tooling
🎯 Knowledge sharing & internal writing

Experience:
💼 10+ years building and scaling iOS applications
💼 7+ years building with React & React Native
💼 3+ years building with Ruby on Rails
💼 3+ years in e-commerce (Shopify)
💼 2+ years in high-performance mobile media (Lightricks)
💼 Experience across startups, consulting agencies, and global tech platforms

Key Successes:
✅ Led development of backend API, app extension, and retail UI enabling third-party payment integrations at Shopify
✅ Redesigned app access permissions, increasing lower-level retail staff adoption by 60%
✅ Built native iOS/Android point-of-sale apps used globally by merchants
✅ Developed GPU shaders and photo/video effects for top-ranked Lightricks apps (Facetune, Lightleap, Motionleap)
✅ Architected real-time user authentication across platforms for mobile editing apps
✅ Built scalable booking, messaging, and scheduling features for Hilton, Experian, and Overwatch League
✅ Ported and optimized Final Draft Mobile to phone, extending platform usability

Languages & Frameworks:
✦ Swift, Objective-C
✦ SwiftUI, UIKit, Metal
✦ JavaScript, TypeScript
✦ React, React Native, Node.js
✦ Ruby, Rails
✦ HTML, CSS
✦ REST, GraphQL, SQL

Platforms & Tools:
✦ iOS, MacOS, Xcode
✦ VS Code, Copilot, Cursor
✦ Git, Github, CI/CD, Jenkins, Buildkite
✦ MongoDB
✦ Google Suite, GCP
✦ Miro, Figma
✦ Tuple, Fellow

## Work Experience
### Senior Software Engineer @ Shopify
Jan 2022 – Present | Los Angeles, California, United States
📌 Key Responsibilities:
🎯 Design and implement secure backend APIs, retail app interfaces, and mobile experiences using Ruby and React Native
🎯 Contribute to project planning and align stakeholders between engineering, product, and design teams
🎯 Develop authentication and access control systems for merchants and staff across iOS, Android, and web platforms
🎯 Participate in code reviews, technical design discussions, and knowledge sharing across teams

🏆 Major Achievements:
✅ Redefined staff permissions logic and frontend flows, increasing app access for frontline staff by 60%
✅ Executed comprehensive testing strategies that ensured project stability, leading to smooth feature rollouts with minimal production issues
✅ Swiftly diagnosed and resolved a merchant-impacting incident by triaging logs, identifying root cause, deploying a targeted fix, and clearly communicating resolution and preventative steps to the client
✅  Drove technical exploration for third-party payments integration by aligning stakeholders, evaluating architectural options, and scoping a clear implementation plan

### iOS Engineer @ Lightricks
Jan 2019 – Jan 2021 | West Jerusalem, Jerusalem District, Israel
📌 Key Responsibilities:
🎯 Build real-time GPU shaders and visual effects using Apple’s Metal framework
🎯 Contribute to core features across multiple iOS apps, including authentication, image/video processing, subscription flows
🎯 Mentor junior developers through knowledge sharing, pair programming, and code reviews
🎯 Collaborate closely with design and product teams to ensure a polished user experience

🏆 Major Achievements:
✅ Designed and implemented secure user login and cross-platform account features, enabling seamless experiences across multiple devices
✅ Developed high-performance real-time visual effects for top-ranked apps like Facetune, Lightleap, and Motionleap
✅ Supported successful launches and updates of multiple App Store–featured apps with millions of downloads

### iOS & Full-Stack Engineer @ mobileforming
Jan 2016 – Jan 2019 | Glendale, CA
📌 Key Responsibilities:
🎯 Develop client-facing and internal applications across iOS and web platforms
🎯 Build reusable modules for networking, including a customizable authentication flow and plugin-based extensions
🎯 Design internal dashboards and widgets using React and Node.js to visualize project health and developer metrics
🎯 Author technical articles and educational content for the company’s internal knowledge base

🏆 Major Achievements:
✅ Engineered scalable real-time tracking and engagement tools for the Overwatch League, boosting fan interaction
✅ Built interactive analytics and reporting dashboards for Experian, improving client insights
✅ Implemented a digital key system for Hilton, enhancing guest experience and increasing customer acquisition
✅ Gained deep expertise in modularization—maintained interdependent iOS libraries with semantic versioning

### iOS Software Engineer @ FamSee Inc
Jan 2015 – Jan 2016 | Greater Los Angeles Area
📌 Key Responsibilities:
🎯 Develop a family-focused photo-sharing app for iOS with search and facial recognition features
🎯 Collaborate with backend and design teams to align features with user needs and system constraints
🎯 Establish version control workflows and best practices to improve team development efficiency

🏆 Major Achievements:
✅ Delivered feature-rich photo search capabilities with facial recognition
✅ Integrated speech-to-text functionality to enhance search accessibility
✅ Reduced tech debt by standardizing shared mobile code architecture across devices

### iOS Software Engineer @ AwesomenessTV
Jan 2014 – Jan 2015 | Greater Los Angeles Area
📌 Key Responsibilities:
🎯 Develop a social video-sharing iOS app to support content creators in connecting with fans and uploading media
🎯 Migrate legacy codebase from Objective-C to Swift to modernize and improve maintainability
🎯 Design and implemented a business intelligence platform for content analytics and reporting

🏆 Major Achievements:
✅ Built a Ruby gem and automated system to pull daily YouTube analytics into Google BigQuery
✅ Shipped internal tools that enabled faster, data-informed decisions by business teams

### iOS Software Engineer @ Final Draft, Inc.
Jan 2013 – Jan 2014 | Greater Los Angeles Area
📌 Key Responsibilities:
🎯 Contribute to development of Final Draft Mobile, the industry-standard screenwriting software
🎯 Focus on text editor tuning and compatibility across various iOS screen sizes

🏆 Major Achievements:
✅ Extended Final Draft Mobile to iPhone, opening access to a wider user base
✅ Supported successful rollout of feature updates through rigorous A/B testing


## Education
### Masters in Computer Science
The Johns Hopkins University
Jan 2011 – Jan 2013

### Bachelors in Talmudic Law
Ner Israel Rabbinical College
Jan 2006 – Jan 2011


## Contact & Social
- LinkedIn: https://linkedin.com/in/haskelash

---
Source: https://flows.cv/haskel
JSON Resume: https://flows.cv/haskel/resume.json
Last updated: 2026-03-22