Talent badge filter
Skills filter
Ukraine
Select talent time zones
$48/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
Start of list.
End of list.
I help startups and B2B SaaS companies build, ship, and scale complete web applications powered by production-grade AI.
Instead of hiring separate frontend, backend, and AI infrastructure engineers, I handle the entire product lifecycle — bridging the gap between robust, scalable full-stack architecture (NextJS, NodeJS, Python, AWS) and cutting-edge GenAI implementations (RAG pipelines, autonomous agents, and LLM orchestration).
With 10+ years in full-stack development, $200K+ earned on Upwork, and a 100% Job Success Score (Top Rated Plus), I build with an ownership mindset to ensure your MVP hits the market fast and scales smoothly.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🌐 FULL-STACK & AI CAPABILITIES — WHAT I BUILD
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
→ Full-Stack SaaS Platforms: Complete web applications with responsive UIs, secure multi-tenant auth, and complex business logic (React, NextJS, TypeScript).
→ AI Agents & Agentic Workflows: Multi-agent systems capable of autonomous execution, tool usage, and function calling (OpenAI, Claude, Gemini).
→ Production RAG Pipelines: Enterprise semantic search utilizing vector databases (Pinecone, pgvector, Qdrant) for accurate, private data querying.
→ Robust Backends & APIs: Highly performant, clean-code REST/GraphQL APIs and microservices (NodeJS, NestJS, Python, Express).
→ Automated Business Workflows: Intelligent document processing, automated lead scoring, and custom CRM/ERP AI integrations.
INDUSTRIES I SERVE WITH AI + WEB SOLUTIONS:
- Multifamily Real Estate — Custom web software layered over Yardi, AppFolio, Entrata, ResMan, RealPage, Apartments com
- Hospitality / Hotels / Restaurants — AI booking flows, guest communication platforms, and review automation dashboards
- MarTech / AdTech — Complete web analytics suites integrated with AdTech and MarTech API, and others like Meta, Google, TikTok, Yelp, and UberEats APIs
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🏆 RESULTS FROM RECENT PROJECTS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✔ AI Voice Agent SaaS Platform — Complete frontend UI/UX redesign + Supabase backend refactor, delivered in 90 days ($7,000 fixed price, 5.0 ★)
✔ Senior NodeJS SaaS Integration — 816 hours of self-driven backend delivery on schedule across 6 months ($32,633, 5.0 ★)
✔ AI-Powered Real Estate Onboarding — Built the web frontend and AI backend workflow that reduced onboarding drop-off and boosted conversions.
✔ Enterprise Software — Systems built by my team are used daily by Cushman & Wakefield (Fortune 500 real estate firm).
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
⚙️ TECH STACK
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
AI / LLM Integration:
OpenAI API, Claude API, Gemini, LangChain, RAG, Vector Databases, Prompt Engineering, Function Calling, Structured Outputs
Backend Development:
Nodejs, NestJS, Python, Expressjs, Nextjs (Server Components)
Frontend Development:
React, TypeScript, Redux, Nextjs, Material UI, Tailwind CSS
Mobile App Development:
Flutter (Cross-platform, CI/CD with Codemagic)
Cloud & DevOps:
AWS (SQS, SNS, Lambda, RDS, ECS, ECR, CloudWatch, EventBridge, VPC, Route53, EC2), Terraform (IaC), Docker, Docker Swarm, Nginx
Databases & Caching:
PostgreSQL, MongoDB, MySQL, Redis, Pinecone, Qdrant, pgvector
API & Enterprise Integrations (50+ types):
REST / GraphQL / SOAP · OAuth2 / OIDC · Webhooks · ETL Pipelines · Payload Encryption
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🏢 ENTERPRISE & THIRD-PARTY INTEGRATIONS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Property Management Systems (PMS):
Yardi Voyager · AppFolio · Entrata · ResMan · RealPage · Apartments com
Marketing & Social Platforms:
Meta (FB/IG) · Google Suite · Twitter/X · TikTok · Yelp · UberEats
Past Enterprise Client Impact:
STIHL · Liebherr · Cushman & Wakefield
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🤝 HOW WE WORK TOGETHER
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
→ Discovery call → System architecture proposal → Milestone-based delivery
→ MVP in 6–12 weeks, production-ready scaling in 18–32 weeks
→ Available 30+ hrs/week, response time within 4–8 hours
→ Backed by a distributed team across 🇺🇦 🇵🇱 🇮🇹 🇷🇴 🇨🇦 if you need to scale resources rapidly
I prioritize long-term, high-trust partnerships over quick fixes — 29 completed projects with an average engagement of 12-24 months.
Let's jump on a call and map out what you're building.
Valentyn S.
has worked
.
Associated with
InterСode 🏆 B2B SaaS software development agency in Advertising & Marketing, Multifamily real estate, Hospitality, Hotels, Restaurants
$200K+
earned
$49/hr
100%
Job Success
$600K+ earned
Offers consultations
Start of list.
End of list.
I love launching tech projects with no-code and AI. My differentiator is that I am not only a capable bubble developer, but also a bubble designer. I design intuitive UX and elegant UI that users trust and adopt.
I’ve optimized my bubble developer profile for better visibility on Upwork, so you may notice intentional keyword repetition.
I help non-technical founders launch MVPs and validate ideas fast. I create AI, Saas and ERP internal apps, and I also have experience with mobile and marketplace apps. I’m a bubble developer and web application developer focused on MVP development.
Videos about MVP and AI development tools on my Youtube channel are attracting 10k views monthly. It helped me establish a powerful personal brand as a Bubble developer and gain recognition within the Bubble community.
Working with me you will get a full-cycle experience: I help you to get from an idea to a well-designed, well-scoped, production-ready, bug-free MVP.
Personal traits:
✔️Excellent communication.
✔️Resourcefulness.
✔️Proactiveness and leadership.
I build startup MVP ( SaaS MVP products ) as a Bubble No Code / Bubble MVP specialist from minimum viable product to a production-ready bubble .io MVP. I can take it end-to-end as a Full stack developer, keeping scope tight, UX clean, and delivery predictable.
My methodology of building fast involves utilizing a templated framework of pre-built components, Bubble .io Canvas. It’s not universal for all projects, but being a bubble designer, I can customize its components in Figma.
I am proficient in the Bubble .io API, and I was able to build a near-real-time integration with QuickBooks, synchronizing thousands of data rows between the systems.
I’m a SaaS developer with experience scaling complex backend logic and data models. I build production-ready Nocode SaaS and MVPs fast. As a Bubble Developer ( No code Developer ), I design clean data models, scalable workflows, error handling and measurable funnels so your no code app can grow past the first users into a stable bubble .io SaaS.
I'm in love with vibe-coding and AI App Development using platforms like Bubble .io, Lovable.dev, Replit and similar. For AI-driven features and rapid experiments, I use Lovable AI ( lovable.dev ), replit, copilot to move faster while keeping the build maintainable — including no code automation with OpenAI for intelligent features.
For ultra-fast iteration and stakeholder demos, I also use Bolt.new, Base44, Anything, and Figma Make.
As a Certified Bubble .io developer, I specialize in shipping a bubble .io mvp fast — from initial flows and data structure to polished UI and integrations — so you can validate your idea with a real product, not just a concept. As an MVP Developer, I can deliver a SaaS MVP ( AI MVP ) that’s clean, scoped and ready for real users.
Bubble .io API + Stripe webhooks, API integration, and other api integration patterns are a core part of my builds. I ship marketplaces, AI, SaaS and ERP internal apps, including ai mvp and custom ai (LLMs and workflow automation).
Working with me you get:
✔️Product thinking with a software product manager mindset.
✔️Clean UX flows + polished UI, plus bubble prototype iterations.
✔️Reliable delivery, QA, and basic devops setup.
Additional experience: building no-code automations with Make, Zapier, and n8n, including AI-driven automation workflows.
🧠Personal passions: Vibe-coding, Agentic AI, LLMs, startup, gym, skiing.
🧠Favorite podcasts: All-In pod, Lightcone by YC, Training data by Sequoia Capital.
🧠Fun facts: I lived in San Francisco for 5 months in 2024-2025, but returned back to Europe.
As a bubble developer, I’m also available for: app developer work, web developer support and mvp developer engagements.
Becoming a Bubble developer truly changed my life and I am happy to work with promising founders helping them ship fast.
Bring the idea and as a mvp developer I’ll bring the scope, speed, and clean execution. Let’s ship your MVP, then iterate based on real data.
Volo G.
has worked
.
Associated with
We Make MVP
$500K+
earned
$45/hr
100%
Job Success
$600K+ earned
Offers consultations
Start of list.
End of list.
If your application is lagging, your cloud bills are skyrocketing, or your codebase has become too messy to maintain — you don’t need more theoretical consulting. You need a hands-on fixer.
I am a Solutions Architect and Technical Lead. I don’t just draw diagrams; I dive into the code, stabilize infrastructure, and lead a vetted team of senior engineers to execute solutions immediately. Whether you need an emergency fix or a complete system overhaul, we deliver fast, reliable results without the overhead of traditional agencies.
** WHAT I ACTUALLY DO (AND HOW MY TEAM EXECUTES):**
▪ Performance & Speed Optimization: Eliminate bottlenecks, optimize databases, and make your app lightning-fast.
▪ Emergency Production Fixes: Stop crashes, handle sudden traffic spikes, and restore system stability.
▪ AWS & Cloud Cost Reduction: Audit cloud infrastructure to slash monthly bills by 30-50% without losing performance.
▪ Legacy Code Modernization: Refactor heavy, unstable monoliths into clean, maintainable microservices.
▪ CI/CD & DevOps Automation: Build bulletproof deployment pipelines for predictable, zero-downtime releases.
** THE EXACT PROBLEMS WE SOLVE: **
▪ "Our system slows down or crashes during peak traffic"➔ We implement smart caching (Redis), optimize MySQL/PostgreSQL, and set up proper autoscaling.
▪ "Our infrastructure costs are bleeding money"➔ We run a deep AWS/Cloud audit, remove resource waste, and right-size your servers.
▪ "Deployments are a nightmare and keep breaking things"➔ We pack your environment into Docker and build reliable CI/CD pipelines.
▪ "Technical debt is blocking us from shipping new features"➔ We clean up legacy PHP/Node.js code, establish clear boundaries, and accelerate development.
** TECH STACK WE DOMINATE: **
▪ Backend: PHP (Symfony, Laravel, Laminas, Yii), Node.js (Microservices, REST & GraphQL APIs)
▪ Cloud & DevOps: AWS (EC2, RDS, ElastiCache, OpenSearch, S3, CloudFront), Azure, GCP, Docker, CI/CD pipelines
▪ Data & Caching: MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch / OpenSearch
▪ E-commerce Infrastructure: High-scale Magento/Woocommerce backend setups, distributed commerce integrations, and performance rescuing.
** HOW WE WORK: **
▪ No Overengineering: We focus on clean architecture and practical solutions that serve your business goals.
▪ No "Quick Fixes" That Break in 3 Months: We deliver scalable, long-term maintainability.
▪ Measurable Results: You get clear status updates, documented changes, and visible performance improvements.
If your software system is struggling, costs too much, or has become a nightmare to maintain — let’s jump on a call and fix it properly.
Oleksii P.
has worked
.
Associated with
Skynix
$3M+
earned
$35/hr
100%
Job Success
$1M+ earned
Available now
Offers consultations
Start of list.
End of list.
🚀 I help businesses build Shopify and WordPress stores that convert and boost sales. From custom Shopify themes to advanced WooCommerce builds, every project is designed for performance, stability, and long-term growth.
I’m Anastasiia, an E-Commerce Developer specializing in Shopify, WooCommerce, and WordPress. Together with my team at Dinamicka Development, we’ve delivered 200+ successful projects across SaaS, e-commerce, and enterprise platforms – helping startups launch and established brands grow faster.
🏆 What You’ll Get Working With Us
✅ 6+ years in E-Commerce development
✅ Solving business needs, not only coding
✅ Proven expertise with e-commerce startups & online stores
✅ Full-cycle delivery: design, dev, integrations, QA, ongoing support & marketing
✅ Clear communication & reliable timelines
🧩 What We Build
- Shopify stores (custom themes, checkout flows, apps, headless setups)
- WooCommerce & WordPress stores (custom builds & optimization)
- Multi-vendor platforms & E-com marketplaces
- Mobile-first stores & PWA solutions
- Subscription-based commerce & billing flows
- E-commerce dashboards, CMS & CRM for store operations
- Landing pages & conversion funnels
- Analytics & internal tooling
- E-commerce AI Agents
- Payment integrations (Stripe, PayPal, Klarna)
🛒 Industries We Support
✔️Fashion & Retail
✔️Health & Wellness
✔️Food & Grocery Delivery
✔️Fintech (billing & payments)
✔️Logistics & Smart Inventory
✔️Real Estate Commerce
✔️B2B & Manufacturing
🔧 Tech Stack
Frontend: React, Vue, Next.js, JavaScript, HTML5 | Backend: Node.js, PHP, Python, Laravel, .NET | Shopify (Liquid, Hydrogen) | WooCommerce | WordPress | React Native, Flutter | AWS, GCP, Azure, CI/CD | MySQL, PostgreSQL, MongoDB
🛠️ Also Helping With:
• Shopify app customization & 3rd-party APIs
• Speed & performance optimization
• Conversion rate improvements
• Ongoing maintenance & tech support
💡 Our Approach
We don’t just launch stores – we build solutions that are easy to manage, fast to scale, and optimized for conversions. With Agile workflows and a full-stack team behind every project, you can count on predictable delivery and long-term support.
📩 Let’s build your next project. Whether it’s a new launch or a complete rebuild, we’ll make sure your e-commerce platform is built to convert today and scale tomorrow.
Associated with
Dinamicka Development
$3M+
earned
$65/hr
100%
Job Success
$600K+ earned
Available now
Start of list.
End of list.
🌍 GIS Developer Who Turns Location Data Into Systems That Cut Costs and Scale Operations | 15+ Years
Most businesses sitting on location data don't have a system that actually uses it. I build the tools that change:
- 🗺️ Interactive web maps and dashboards
- 🧭 Route optimization tools
- 🛰️ Real-time asset monitoring systems
- 📊 Spatial analysis solutions for faster decision-making
💡 I don’t just write code. I focus on solving business problems by leveraging geospatial data to drive smarter decisions, reduce costs, and scale operations.
🚀 Track record:
✔ 15+ years in GIS & full-stack development
✔ 13,700+ hours worked
✔ 120+ milestones completed
✔ 90+ successful projects
✔ 55+ satisfied clients
🏆 Key achievements:
✔ Developed a Non-Emergency Medical Transportation (NEMT) platform with GIS features that helped the client win contracts and grow revenue by more than 30 times
✔ Built a GIS tool that reduced the duration of the land property development potential assessment by more than 1000 times (from days to seconds).
✔ Developed a service for automatic scheduling and routing shared rides, which increased the fleet capacity by more than 20%.
These are examples of how GIS can create a measurable business impact.
🌐 Industries I serve:
- 🚚 Logistics
- 🚑 Healthcare & NEMT (Non-Emergency Medical Transportation)
- 🏡 Real Estate & PropTech
- 🌳 Environmental Monitoring & Sustainability
- and beyond.
🛠️ My services
- GIS consulting and discovery
- Proof of concept for GIS solutions
- Web GIS development
- Mobile GIS development
- Geospatial analysis
- Object detection and recognition on satellite imagery
🤝 How I work
Every project starts with understanding your business processes and goals. This allows me to design a solution that solves the actual problem.
My development process is iterative and usually consists of the following stages:
- Discovery: Analysis and specification of your business needs, project goals, data, and requirements; UI/UX design; high-level architecture design; cost estimation; and development planning
- Implementation
- Testing
- Delivery
After each iteration (typically 1–2 weeks), I provide a demo of completed features and incorporate your feedback. This approach reduces risks, improves transparency, and ensures we stay aligned with your goals.
To improve quality, accelerate development, and reduce costs, I often involve other specialists from our team, such as a Business Analyst, a QA Engineer, a DevOps Engineer, and a Data Analyst. I also use AI tools to accelerate writing code.
🌐 Industry experience
🚚 Logistics & Healthcare Transportation
✔ Transportation request booking and management platforms
✔ Fleet management systems
✔ Route optimization
✔ Dispatch automation: Vehicle Routing Problems (VRP), Dial-a-Ride Problem (DARP)
✔ Cost optimization for Google Maps API
✔ GPS and ETA tracking
✔ Geofencing
✔ API integration with dispatch software
✔ Billing (EDI 837, 835) and payment processing
🏡 Real Estate & PropTech
✔ Integration of geospatial data from multiple sources
✔ Multi-layer map visualization (zones, cadastral data, infrastructure, etc.)
✔ Site selection and suitability analysis tools
✔ Automated geospatial reporting
🌳 Environmental Monitoring & Sustainability
✔ Map-based inventory management systems
✔ Satellite imagery processing and analysis
✔ Object recognition on aerial and satellite imagery using AI/ML
✔ Spatial analytics and decision-support tools
⚙️ Core skills
✔ GIS & Mapping: Mapbox, Leaflet, OpenLayers, Google Maps API, ArcGIS, OSM, OSRM, PostGIS
✔ Frontend: JavaScript, Vue.js, React
✔ Backend: Python, Node.js, PHP (Laravel, CodeIgniter), C#
✔ Databases: PostgreSQL, MySQL
✔ Other: AWS, Docker, API Integration, AI/ML, OpenCV, Data Scraping
Other experience and skills:
✔ Development of ArcGIS (ArcMap, ArcGIS Server) extensions and tools
✔ Building GIS components that can be used in both desktop and web environments (ArcMap, ArcGIS Engine Runtime, ArcGIS Server based web applications)
✔ Implementation of fast boolean operations on large polygon sets (10+ millions)
✔ GIS Specialist
✔ Web GIS Developer
✔ Interactive Map Development
✔ GIS mapping
✔ Web mapping application developer
✔ Mapbox developer
✔ Mobile application developer
✔ Database architecture design
✔ Data analysis
✔ SaaS developer
✔ Logistics supply chain software developer
✔ Supply chain management system
✔ Transportation Management System
✔ TMS software developer
✔ Trucking logistics software developer
✔ Freight management system
✔ NEMT software developer
✔ Booking Management System
✔ Dispatch software developer
📅 Available: 09:00 - 19:00 (GMT+2)
👉 Let’s discuss your goals, challenges, or ideas and explore how geospatial technology can help your business grow.
Ihor K.
has worked
.
Associated with
GIS Art
$40/hr
100%
Job Success
$800K+ earned
Available now
Offers consultations
Start of list.
End of list.
I'm the Founder & CEO of two AI companies - UppLabs (Top 1% AI development agency on Clutch & Upwork) and OpsWorks Co. (DevOps and Cloud consultancy, AWS, GCP amd Azure Partner) - with a combined team of 50+ certified engineers.
BY THE NUMBERS:
🏆 100+ AI, DevOps, and software projects delivered
🏆 $2M+ combined earned on Upwork, 100% Job Success Score
🏆 $100M+ in client revenue generated
🏆 100+ certifications across the team
🏆 60,000+ hours logged, 200+ completed contracts
TWO THINGS WE DO BETTER THAN ALMOST ANYONE ON UPWORK:
🤖 1. BUILD AI-POWERED SOFTWARE
Custom AI agents, RAG pipelines, production ML models, and full-stack platforms for Fintech, Healthcare, and PropTech. Not ChatGPT wrappers - real systems that process transactions, automate clinical workflows, and make business decisions. Clients include Deloitte, Citibank, Disney, and TimelyCare.
⚙️ 2. BUILD INFRASTRUCTURE THAT RUNS ITSELF
AI-augmented DevOps, AWS/GCP/Azure architecture, and intelligent monitoring that self-heals, auto-scales, and cuts cloud costs. ETX Capital cut infrastructure spend by 50%. Syndigo cut costs by 92%. Vodafone improved efficiency by 40%.
HOW WE WORK - AI-NATIVE FROM DAY ONE:
We don't just build AI products - we use AI agents and modern automation internally to deliver faster and better than traditional teams.
🛠️ On the development side:
- AI-assisted architecture design and code generation to ship features 3x faster
- Agentic code review pipelines that catch bugs and security issues before humans do
- LLM-powered test generation and documentation — zero manual overhead
- AI pair programming across the entire engineering team as standard practice
🔁 On the DevOps side:
- AI agents that monitor infrastructure 24/7, detect anomalies, and self-heal before incidents occur
- Intelligent CI/CD pipelines with LLM-powered deployment gating and rollback triggers
- Agentic cost optimization that continuously rightsizes resources and eliminates waste
- AI-driven incident response that diagnoses, escalates, and resolves issues autonomously
💡 The result: your product gets built faster, your infrastructure costs less, and your team spends zero time on problems that machines can handle.
WHAT YOU GET:
✅ Production-ready AI: agents, LLM pipelines, fraud detection, clinical AI, compliance automation
✅ AI-native web and mobile apps built to scale (React, Next.js, React Native)
✅ Zero-downtime infrastructure on AWS, Azure, GCP with Kubernetes and Terraform
✅ Full compliance: HIPAA, SOC2, PCI DSS, ISO 27001, GDPR, OWASP
✅ Cloud cost reduction of up to 90% using AI-driven optimization
✅ MVPs shipped in weeks, not months - 3x faster time-to-market
Whether you need an intelligent product built from scratch or infrastructure that stops costing you sleep - let's talk. 🚀
Associated with
UppLabs
$1M+
earned
$35/hr
100%
Job Success
$10K+ earned
Available now
Start of list.
End of list.
Hi! My name is Andrii, I am a skilled Full-Stack Developer with 8 years of experience, ready to transform your digital concepts into reality. With a holistic approach to web development, I'm passionate about creating seamless, user-friendly experiences that make a lasting impact.
My toolkit encompasses a wide array of skills:
📌JavaScript/TypeScript
📌Node.js
📌Nest.js
📌React.js
📌 Python
📌Angular
I have experience with several popular frameworks, which allows me to choose the best tool for creating a high-quality user interface according to your needs.
Moreover, I am good at working in a team and appreciate the exchange of knowledge, but I am also able to independently solve problems and look for new solutions to improve the quality of work.
💪 More about my skills that will help us achieve the best result:
✅ React.js, Angular, Nest.js, Express, TypeORM, Redux (toolkit/hook forms), JSX, MUI, Bootstrap, AntDesign;
✅ SQL;
✅ WebSokets;
✅ NoSQL - MongoDB, Firebase;
✅ HTML, CSS, LESS, Sass;
✅ SQLite, MySQL, PostgreSQL;
✅ AWS, Azure;
✅ Git, GitHub, GitLab
✅ Agile, Scrum, Kanban, Waterfall, Pair Programming, Feature Driven;
Teamwork and Communication 🤝
Collaborative Spirit: Believing in the power of effective teamwork.
Clear Communication: Open lines of communication are essential for project success.
Adaptability 💼
Staying Ahead: In the dynamic world of web development, staying current with the latest trends and technologies.
Problem-Solving: Tackling challenges head-on to keep projects on course.
I'm dedicated to turning your web development dreams into reality, all while maintaining a friendly and results-driven approach. Let's embark on this exciting web development journey together!
If this sounds like a fit for you, I’d love to chat – invite me to interview and grab some time.
Associated with
Meduzzen
$2M+
earned
$30/hr
99%
Job Success
$200K+ earned
Available now
Offers consultations
Start of list.
End of list.
I’m Vitalii, a Senior Full Stack Developer with 8+ years of experience building web applications, mobile apps, SaaS platforms, MVPs, and API-based systems for startups and growing businesses.
𝐅𝐞𝐞𝐥 𝐟𝐫𝐞𝐞 𝐭𝐨 𝐜𝐥𝐢𝐜𝐤 “𝐌𝐞𝐬𝐬𝐚𝐠𝐞” - 𝐈’𝐥𝐥 𝐫𝐞𝐬𝐩𝐨𝐧𝐝 𝐪𝐮𝐢𝐜𝐤𝐥𝐲. 𝐎𝐫 𝐡𝐢𝐭 "𝐭𝐡𝐫𝐞𝐞 𝐝𝐨𝐭𝐬" 𝐚𝐧𝐝 𝐢𝐧𝐯𝐢𝐭𝐞 𝐦𝐞 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐣𝐨𝐛 𝐬𝐨 𝐈 𝐜𝐚𝐧 𝐩𝐫𝐨𝐯𝐢𝐝𝐞 𝐚𝐧 𝐞𝐬𝐭𝐢𝐦𝐚𝐭𝐞 𝐚𝐧𝐝 𝐚 𝐜𝐥𝐞𝐚𝐫 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐩𝐥𝐚𝐧.
I help teams launch MVPs, improve existing systems and scale SaaS products without losing performance or stability.
As a Full Stack developer I usually work on:
• building MVPs from idea to production for web and mobile applications
• building SaaS platforms, dashboards, admin panels, and API integrations
• improving and refactoring slow or unstable frontend and backend systems
• scaling backend and APIs under real production load
• optimizing performance and user experience across web apps
• taking ownership of features and systems end-to-end
✅ Track record on Upwork:
• $200K+ total earnings
• 7,900+ hours worked
• 99% Job Success
• Top Rated Plus
Worked across SaaS platforms, marketplaces, mobile apps and internal tools, supporting both new product development and long-term system improvements.
🚀Selected work as a Full Stack developer:
• Built a collective decision-making platform with identity verification and structured voting flows, helping users organize, align, and make decisions together in a transparent way.
• Developed an AI-driven language learning app with guided lessons, reinforcement logic, and gamified features, helping users stay engaged and build consistent learning habits.
My Full Stack developer working approach
I build systems that work reliably in production and don’t need to be rebuilt as the product grows.
🚀 Clients value:
• clear communication and predictable delivery
• ownership from idea to release
• ability to step into an existing codebase and move it forward
• focus on real product outcomes
🚀Tech stack:
• Frontend - React, Next.js, TypeScript, Tailwind CSS
• Backend - Node.js, REST APIs, integrations, authentication
• Mobile - React Native
• Data & Infra - PostgreSQL, MongoDB, Firebase, Supabase
• Integrations - Stripe, PayPal, third-party APIs
I'm Full-Stack Developer, building scalable web applications, SaaS platforms, MVPs, admin panels, dashboards, marketplaces, CRM systems, and business automation tools for startups and growing companies.
Core expertise: React developer, Node.js developer, frontend developer, backend developer, SaaS developer, web app developer, MVP developer, API developer, Next.js developer, TypeScript developer, REST API integration, database design, and cloud-based application development.
If you need a Full Stack developer who can take ownership, keep systems stable and move your product forward - feel free to reach out.
full stack developer, full stack web developer, python full stack developer, full stack developer ai, full stack developer react, full stack laravel, ai developer, wordpress developer, shopify developer, website developer, webflow developer, app developer, react developer.
Vitalii A.
has worked
.
Associated with
Lumitech
$2M+
earned
$20/hr
100%
Job Success
$90K+ earned
Available now
Offers consultations
Start of list.
End of list.
Mobile Expert
Moving a business idea from concept to a high-load production environment requires more than just coding - it requires a seamless fusion of design and engineering.
I provide a comprehensive product-building experience. My team and I don’t just build apps; we craft high-performance digital products specializing in GPS Navigation, Wellness, and Sport Tech.
What I bring to your project:
- User-Centric UI/UX Design: We don't just "design UI." We build intuitive user journeys, high-fidelity prototypes, and data-driven interfaces that keep users engaged in Health & Fitness ecosystems.
- Full-Cycle Delivery: From seamless Flutter/Native interfaces to robust Java/Quarkus microservices and Kafka event-driven architectures.
- Domain Expertise: Deep understanding of the specific challenges in Health & Fitness tech (data sync, wearables, GPS tracking).
- Architectural Excellence: I ensure your application is built for 100k+ concurrent users from day one.
- Business-Centric Approach: I focus on ROI, time-to-market, and scalable code that doesn’t require a complete rewrite in 6 months.
- Core Expertise for Your Success:
- Mobile: Flutter, Kotlin (Android), Swift (iOS).
- Backend & Systems: Java 17, Spring Boot, Quarkus, Kafka (Real-time data).
- Architecture: RESTful APIs, Microservices, Event-Driven Design.
I am happy to discuss our approach and how my team and I can accelerate your roadmap.
Let’s build something extraordinary together.
Kateryna Z.
has worked
.
Associated with
AcidSoft
$50K+
earned
$45/hr
100%
Job Success
$70K+ earned
Available now
Offers consultations
Start of list.
End of list.
We Build Next Generation of Mobile Applications
Senior Mobile Lead Engineer | 9+ years of experience | High-quality Mobile and Web Apps | Claude Code
📊 My Core expertise is the Apple ecosystem, delivering robust solutions across iOS (Swift, SwiftUI), iPadOS, watchOS, and macOS. I work extensively with Swift, SwiftUI, UIKit, Combine, Objective-C, and advanced Apple frameworks such as HealthKit, MapKit, and complex third-party integrations.
Beyond development, I provide end-to-end product delivery — from idea validation to App Store release. By combining Business Analysis, UI/UX Design, Agile Development, and Quality Assurance, we build future-proof applications that minimize technical debt and reduce long-term maintenance costs.
⸻
Services I can provide:
📱 Native Mobile Development (iOS & Android)
• iOS Development: Swift, SwiftUI, UIKit, Combine, Objective-C
• Android Development: Kotlin, Java
• Cross-platform: React Native, Flutter
• Apple Watch apps, smartwatch apps
• Health & fitness apps, Apple Health, HealthKit
• Maps & navigation (MapKit, Google Maps, Mapbox)
• Real-time features, sockets, charts & analytics
🌐 Web Development
• React, Angular, Next.js
• TypeScript, JavaScript
• High-performance front-end and responsive UI development
🛠 Backend & DevOps
• Node.js, Python, Go, PHP
• API development & third-party integrations
• Cloud deployment: AWS, Docker, VPS
🎨 UI/UX Design & Product Thinking
• Figma, wireframes, prototypes, user flows
• Product discovery and idea validation before development
📊 Management & QA
• Agile project management
• Manual & automated testing
• Business analysis & product ownership support
⸻
Fintech Expertise
• Crypto applications (BTC, ETH, USDT, TRC20)
• Real-time exchange data & socket connections
• Charts, analytics, and on-chain operations
• Secure authentication & sensitive data handling
⸻
Why Clients Choose Us
✔️ iOS-first team with deep expertise as Swift Mobile Developers
✔️ Reliable long-term partner for scalable product development
✔️ Strong focus on performance, usability, and clean architecture
✔️ Transparent communication and Agile processes
✔️ Full-cycle delivery: design → development → QA → release → support
⸻
Looking for a long-term Swift Mobile Developer instead of a one-off coder?
If you need a stable, scalable, and carefully crafted mobile product built with modern iOS technologies, let’s discuss your goals. I can provide a clear project plan, timeline, budget estimate, and technical strategy tailored to your vision.
⸻
🔑 Technologies & Keywords (SEO Optimized)
Swift Mobile Developer, Senior Swift Developer, iOS Developer, SwiftUI, UIKit, Combine, Objective-C, Apple Developer, iPhone App Development, iPad App, macOS App, watchOS App, HealthKit, Apple Health, MapKit, Google Maps, Mapbox, Kotlin, Android Developer, React Native, Flutter, TypeScript, JavaScript, Figma, UI/UX Design, MVP Development, High-Quality App Development, Mobile Architecture, Performance Optimization, Scalable Mobile Apps, Crypto Wallet App, Bitcoin, USDT, tokens, Quality, high-quality app
⸻
📩 Send me a message, and I’ll share my Upwork scheduler link so we can find a time that works best for you
Denys H.
has worked
.
Associated with
Applefy - Premium Software Development
$70K+
earned