I have successfully shipped over 160 apps to the App Store and built high-performance web platforms, ranging from AI-driven startups like FIT:MATCH AI to enterprise-scale systems for From Now On. I don’t just write code; I take ownership of the full digital lifecycle.
Whether it’s the first line of Swift or a robust full-stack web architecture, I handle the development, deployment, and documentation so you don’t have to worry about technical debt later.
My Core Expertise:
Modern iOS & Web: Deep expertise in Swift/SwiftUI for mobile and React/Node.js (or your preferred web stack) for scalable web applications.
Full-Stack & Backend: Extensive experience building the "brains" of the app, including Supabase, PostgreSQL, and custom API integrations.
Future-Ready: Active development with AI infrastructure, LLM integrations, and VisionOS.
Reliability: Proven track record with rigorous documentation, debugging scripts, and mentoring teams to ensure long-term maintainability.
I believe in over-communicating and delivering on time. If you need a developer who can hit the ground running across your entire iOS and Web ecosystem, let’s talk.
iOS Development
Swift
App Development
Mobile App
Mobile App Development
SwiftUI
Myroslav K.
Aventura, Florida
$69/hr
5.0
52 jobs
10+ Years as a Full stack developer and Fractional CTO - using React.js, React-Native, Vue.js, Node.js, Next.js, Nest.js, and overall Full stack development in web and mobile.
10+ Years specifically building SaaS projects. SaaS development from MVP to complex high loaded products.
10+ Projects built with high user load in the role of Full stack developer - Delivered robust applications with a 100% job success score. (As an example app called Niya has over 💲 50.000 💲 active users)
As a Full stack developer - I’m using in frontend (React, Next.js, React Native Tailwind, shadcn and other style UI libraries, Vercel), backend (Node.js, MongoDB, PostgreSQL) Neon, Render, also deep work with supabase (popular for AI Vibe coding). Also as a Full stack developer I made over 15 apps using React Native CLI and React Native Expo, so I’m open to mobile app developer opportunities. I used to work separately as a web developer only as well. As a Fractional CTO I gained a skill to be more specific on the project stack based on project goals, budget and plans.
Performance & Scalability - Being Full stack developer is not only to build and ship it’s also to optimized solutions for speed, SEO, and scalability. I have worked on SEO on domains with high domain authority. Worked a lot with different backend infra providers. Starting some basics, like serverless solutions, finishing AWS services.
Agile Collaboration - Transparent communication, iterative workflows, and timely delivery. I used to be on some projects in the role of project manager as well, I know the right way to manage things. I handle the entire development lifecycle, from React Native UI UX design to backend architecture, API integration, cloud deployment, overall a whole full stack delivery..
Hey, I’m Myroslav, a full stack developer and Fractional CTO on steroids with AI usage and large knowledge as a React developer & Senior web developer & IOS developer & Android developer as well. with over 10 years of experience since 2016, specializing in the Full stack development with different technologies React.js, Node.js, Next.js, Nest.js, React-Native CLI, React-Native, Expo, Vue.js, in generally mostly javascript based. I really love mern and mern stack in general, but nowadays I'm using PostgreSQL for most of the projects.
My focus as a full stack developer is to deliver a fully functional, and production ready MVP for you within 20-40 days, you don’t need to hire ux designer, I’ll handle everything in house. ). I can even handle your "Replit" or "Base44" or "Lovable" or any other AI/Vibe-coding tools you used to make your project. Making sure that we have a great structure & architecture of the application, and making sure it’s ready to get heavy lifting features later on, and supporting hundreds of thousands requests hourly bases. My Fractional CTO experience will bring a new breath to your project.
Industries:
In the past I worked a lot with heavy loaded services that requested difficult mapping, maps, routes integration, orders functionality, complex payment integrations. Also worked many times with Health and Wellness, Transport & Geo, Retail, Dating and Lifestyle, Food Delivery, Fintech and Banking, Entertainment and Media, Logistics and Manufacturing, Productivity and Education, Marketplaces and Advertising, Automotive and Travel.
Frameworks and staff: as a full stack developer, I used a lot of mern and mern stack. I also have experience working as a react developer or web developer only, and full stack developer django in the past. For the last 4 years I've been actively going deep into LLMs and machine learning which is mostly python based, so I’d say I can call myself a senior python developer as well.
Let’s Connect!
GET YOUR MVP WITHIN 20 DAYS!
Click the “Invite to Job” button, and let’s discuss turning your idea into reality.
API
HTML
JavaScript
CSS
React
Node.js
Web Application
Software Development
Full-Stack Development
API Integration
PHP
Python
Vue.js
Laravel
WordPress
HTML5
Tailwind CSS
Web Design
Software Architecture & Design
MySQL
Ashton W.
Greenacres, Florida
$30/hr
5.0
1 jobs
I’m a highly experienced mobile developer with over 5 years of hands-on expertise building iOS and Android apps using Swift, Java, and UIKit. I’ve worked on a wide range of projects—from business tools to personal wellness apps—and bring a strong focus on clean code, great user experience, and reliable delivery. While I’m new to Upwork, I’ve delivered production-level apps in professional settings and am now bringing that same level of quality and dedication to the freelance space. I’m passionate, dependable, and ready to help turn your app ideas into reality.
iOS
Bitbucket
MySQL
Firebase Realtime Database
API
Git
XML
GitHub
Agile Software Development
Core Data
Agile Project Management
Jira
JSON
Sajjad M.
Boynton Beach, Florida
$40/hr
4.2
2 jobs
Hi, I'm a full stack web developer. I take pride in following best practices and guidelines to keep the code maintainable, simple, and scalable. I'm a hard-worker and always go beyond what is expected to build a lasting relationship with whomever I connect with.
iOS Development
Ecommerce Development Consultation
JavaScript
PHP
CSS 3
Node.js
HTML5
React
Laravel
DevOps
Ecommerce
Amazon FBA
Walmart.com
Blockchain
React Native
Virtual Reality
Troy B.
Orlando, Florida
$75/hr
5.0
8 jobs
Hi, my name is Troy Barrett. I primarily work directly with C-Suite level shareholders, and most of my experience comes from start-up ventures where I have been responsible for providing CTO, CMO, and COO consultation/fractional roles. My extensive background allows me to work successfully across departments.
I have also been a top GoHighLevel engineer for 3+ years. I’ve worked in some capacity or another with 100+ small to medium-sized companies across all functions of Go High Level, including web design, SEO, media buying, attribution reporting, team hiring and training, call center operations, affiliate payout structures, course building, and much more.
Broad background
• Ongoing consultation with aligned brands via revenue-sharing partnerships
• System Architect for a $M+ Lead Gen venture across various independently owned and operated solar companies
• US Military Instructor
• 10+ years U.S. Navy Electrical Engineer
• Columbia University Comp Sci (student and teaching roles)
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Causes I Care About ...
Community Forward • Economic Empowerment • Education • Human Rights • Poverty Alleviation • Science and Technology • Social Services
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