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$70/hr
$9K+ earned
Offers consultations
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With 6+ years of experience in iOS development, I have worked in various companies, from startups to large-scale product companies like Kcell and AlfaBank in Kazakhstan. Over the years, I’ve taken on leadership roles, mentoring developers, conducting workshops, and running internship programs to help teams grow.
My core philosophy is to create maintainable, well-structured, and efficient projects. I focus on writing clean, scalable code that ensures long-term stability and ease of iteration. Whether leading a team or working hands-on, I prioritize best practices, performance optimization, and architectural excellence.
I am always open to new challenges, whether it's leading a team, improving an existing codebase, or building a high-quality iOS app from scratch. Let’s work together to bring your ideas to life with robust and elegant solutions.
$125/hr
100%
Job Success
$100K+ earned
Available now
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EXPERT-VETTED (TOP 1%) | 100% JOB SUCCESS
Most AI projects look finished in a demo, then break in production.
I build production-grade software. That means it holds up with real users :
Scales under real traffic, not just a demo
Secure and tested, not "looks fine, ship it"
Clean architecture your next hire can build on
Costs you can predict before you commit
25 years building software. Now my team and I direct AI agents across the full build and review every line before it ships. Fast, but not vibe coding.
I AM A FIT IF YOU
Have an idea but no technical leadership to run the build
Have a vibe-coded app generating MRR but need a stable foundation under it
Started building but need architecture and senior oversight to finish
Want to use AI without losing control of your codebase
REAL RESULTS
A traditional build was quoted at $1.2M. My team and I delivered it for $95K, same scope.
Replaced a client's manual spreadsheet process with a web app. Revenue up 71%.
Architecture that held through 500% traffic growth
79M pricing calculations a month, in production
WHAT WORKING WITH ME LOOKS LIKE
Full team: I bring engineers, a product owner, a designer, and QA. I lead the architecture. AI executes. Nothing ships without senior review.
Advisory: I come in as your technical advisor. Same judgment, scoped to what you need.
Either way, there's a senior engineer on it from the first call to the final release.
RECENT PROJECTS
Automotive SaaS: A real-time pricing platform running 79M price combinations a month 24/7.
AI Knowledge Platform: A voice-first knowledge platform that works offline at sea. Captures what senior crews know and makes it searchable for the next crew.
Live broadcast with AI: A multi-agent engine that writes and narrates stories live, adapting to the audience in real time.
TECH STACK
AI/ML: LLMs, RAG, vector search, multi-agent orchestration Backend: Python, Node.js, TypeScript Frontend: React, React Native, Unity Cloud: AWS, Docker, Kubernetes Data: SQL, NoSQL, vector DBs
BEFORE YOU COMMIT TO ANYTHING
Book 30 minutes with me directly. Honest feedback on feasibility, realistic cost, and fit. No pitch. No commitment. NDA first.
Associated with
RSM Studio
United States
$100/hr
100%
Job Success
$100K+ earned
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An experienced mobile developer with a decade of mobile experience who specializes in building cross-platform mobile applications from design to specification.
Alex H.
has worked
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United States
$100/hr
100%
Job Success
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Game and application veteran team well-versed in cross-platform SDKs and native application development for iOS and Android. Also have tons of relevant experience working with Sony, Microsoft and Nintendo platforms. Deep development experience with Unity, Unreal, React Native, Corona/Solar2D, SwfitUI and Java.
United Kingdom
$60/hr
100%
Job Success
$300K+ earned
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Industry Expert Software Developer - Previously @ IBM, Microsoft
Expert Vetted, Top Rated Developer | Scalable, Clean, Documented Code Always
Technologies:
- MongoDB, ExpressJS, React, NodeJS
- React Native, Swift, Flutter
- Python, Ruby, Ruby on Rails, PHP
- .NET, C#, ASP.NET
- OpenAI, LLM, Generative A.I
Let's connect and discuss your project.
Aymen B.
has worked
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$100/hr
100%
Job Success
$2M+ earned
Available now
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Since 2019, I've connected early-stage startups with senior developers and designers who actually fit their culture and tech stack. No recruitment BS, no flaky freelancers, just people I've worked with and trust.
I run New Wave Devs, an engineering studio working with startups across the US, UK, Canada, Netherlands, and Norway. We do team augmentation, MVP builds, design work, and team rescue when things go sideways. Our engineers work directly with your team, usually onboarded in under a week, and you talk to the engineer, not a sales layer.
The bench runs deep. On the frontend, React, React Native, TypeScript, and Flutter. On the backend, Ruby on Rails, Node, Python, and .NET. Plus AI engineers shipping RAG and agentic workflows in production, along with designers, DevOps, and QA. Mostly SaaS, marketplaces, fintech, and mobile.
These aren't junior generalists. Our people have scaled Postgres past a billion rows, shipped Stripe Connect marketplace payments, built HIPAA-compliant health platforms, run native apps at over a million monthly users, and put RAG assistants in front of real customers. So whether you're shipping a first MVP or hitting your first real scaling wall, someone here has already done it.
Why people work with us: fast onboarding (1 to 7 days), engineers who match your culture, transparent pricing, and a track record of 100K+ in contracts with long-term clients who keep coming back.
Roman O.
has worked
.
$95/hr
100%
Job Success
$1M+ earned
Available now
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𝗜𝘀 𝘆𝗼𝘂𝗿 𝗽𝗮𝘆𝗺𝗲𝗻𝘁 𝘀𝘆𝘀𝘁𝗲𝗺 𝗰𝗼𝘀𝘁𝗶𝗻𝗴 𝘆𝗼𝘂 𝗺𝗼𝗻𝗲𝘆 𝗮𝗻𝗱 𝗰𝗮𝘂𝘀𝗶𝗻𝗴 𝘀𝗹𝗲𝗲𝗽𝗹𝗲𝘀𝘀 𝗻𝗶𝗴𝗵𝘁𝘀? Let’s turn that stress into success.
With over 20 years of experience as a seasoned FinTech leader and Global CTO specializing in 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗚𝗮𝘁𝗲𝘄𝗮𝘆 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻, 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻, and 𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴, a proven track record awaits you. Payment systems have been built and optimized to not only meet today's demands but also scale with your business tomorrow—delivering over 𝗨𝗦𝗗 𝟮𝟬𝗠 𝗶𝗻 𝗿𝗲𝘃𝗲𝗻𝘂𝗲 𝗳𝗼𝗿 𝟭𝟬+ 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 and powering 200+ successful app launches worldwide.
𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝘁𝗵𝗲 𝗧𝗮𝗯𝗹𝗲:
𝟭. 𝗘𝘅𝗽𝗲𝗿𝘁 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: Mastery in integrating 𝗦𝘁𝗿𝗶𝗽𝗲, 𝗦𝘁𝗿𝗶𝗽𝗲 𝗖𝗼𝗻𝗻𝗲𝗰𝘁, and other payment gateway APIs, ensuring secure, efficient, and scalable payment systems.
𝟮. 𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 & 𝗧𝗿𝗮𝗻𝘀𝗮𝗰𝘁𝗶𝗼𝗻 𝗟𝗼𝗴𝗶𝗰: Proven expertise in handling recurring payments, multi-invoice payments, partial payments, and complex scenarios like payment failures, refunds, and voiding transactions.
3. 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 & 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝘆: Adept at leading cross-functional teams, communicating with C-level executives, and transforming technical challenges into robust, revenue-generating solutions.
𝟰. 𝗛𝗮𝗻𝗱𝘀-𝗢𝗻 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: Whether you’re dealing with broken software systems or planning a complete digital transformation, startups and enterprises alike have seen at least a 𝟭𝟬% 𝗶𝗺𝗽𝗿𝗼𝘃𝗲𝗺𝗲𝗻𝘁 𝗶𝗻 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝗰𝘆 𝗮𝗻𝗱 𝗽𝗿𝗼𝗳𝗶𝘁𝗮𝗯𝗶𝗹𝗶𝘁𝘆 through these solutions.
𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗰𝗲𝗹𝗹𝗲𝗻𝗰𝗲 𝗶𝗻 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗣𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴:
Leveraging cutting-edge payment processing protocols — 𝗣𝗖𝗜-𝗗𝗦𝗦 𝗰𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲, 𝘁𝗼𝗸𝗲𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻, 𝗲𝗻𝗱-𝘁𝗼-𝗲𝗻𝗱 𝗲𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻, and 𝟯𝗗 𝗦𝗲𝗰𝘂𝗿𝗲 𝗶𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻𝘀 — ensures sensitive data is safeguarded and fraud risks are mitigated. Expertise in configuring 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗜𝗻𝘁𝗲𝗻𝘁𝘀, 𝗦𝗲𝘁𝘂𝗽 𝗜𝗻𝘁𝗲𝗻𝘁𝘀, and utilizing 𝘄𝗲𝗯𝗵𝗼𝗼𝗸𝘀 for real-time event handling optimizes 𝗦𝗖𝗔 flows, manages decline handling and chargebacks, and ensures seamless reconciliation across multiple payment channels. A deep understanding of card network rules, risk management strategies, and automated dunning processes guarantees that payment operations remain both resilient and highly efficient.
𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗶𝗻 𝗜𝗻-𝗔𝗽𝗽 𝗣𝘂𝗿𝗰𝗵𝗮𝘀𝗲 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴:
Extensive experience with 𝗶𝗻-𝗮𝗽𝗽 𝗽𝘂𝗿𝗰𝗵𝗮𝘀𝗲 systems on both 𝗚𝗼𝗼𝗴𝗹𝗲 𝗣𝗹𝗮𝘆 and 𝗔𝗽𝗽𝗹𝗲 𝗔𝗽𝗽 𝗦𝘁𝗼𝗿𝗲 platforms complements robust payment gateway integrations. Successfully blending these in-app purchase mechanisms with 𝗦𝘁𝗿𝗶𝗽𝗲 creates a unified payment ecosystem that supports subscriptions, one-time purchases, and cross-platform transactions. Notable projects include 𝗦𝘁𝗿𝗲𝗮𝗺𝗶𝗹𝘆 and 𝗕𝗿𝗮𝗶𝗻𝗧𝗮𝗽, where in-app purchase flows were seamlessly integrated with backend payment processing to optimize revenue and enhance user experience.
𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀:
𝟭. 𝗚𝗹𝗼𝗯𝗮𝗹 𝗜𝗺𝗽𝗮𝗰𝘁: Solutions delivered have scaled workforces and revenues — streamlining processes and reducing monthly costs dramatically (e.g., cutting costs from $𝟭𝟲𝟬,𝟬𝟬𝟬 𝘁𝗼 $𝟱𝟬,𝟬𝟬𝟬).
𝟮. 𝗥𝗲𝘀𝘂𝗹𝘁𝘀-𝗗𝗿𝗶𝘃𝗲𝗻: Engagements have doubled revenue for companies like 𝗕𝗿𝗮𝗶𝗻𝗧𝗮𝗽 and contributed to a 𝟵𝟵.𝟲% 𝗰𝗿𝗮𝘀𝗵-𝗳𝗿𝗲𝗲 𝗿𝗮𝘁𝗲, leading to over 𝟭𝟬,𝟬𝟬𝟬 𝗱𝗼𝘄𝗻𝗹𝗼𝗮𝗱𝘀 and high user ratings.
𝟯. 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻 & 𝗔𝗴𝗶𝗹𝗶𝘁𝘆: Continuously integrating the latest tools—from 𝗔𝗜 𝗶𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻𝘀 like ChatGPT and DeepSeek to advanced mobile app development frameworks — ensures clients remain ahead of the curve.
𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆:
PCI-DSS | SOC2 | HIPAA | GDPR
𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲?
Partner with an expert who delivers tangible results, allowing you to focus on business growth. If you're ready to stop wrestling with payment integration issues and start experiencing streamlined, profitable operations, let's connect.
Book a Consultation Today.
Subodh S.
has worked
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$95/hr
$90K+ earned
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More than 15 years experience in software technology.
While in recent years I have shifted my focus to software development, the majority of my career has been leading business teams in customer facing roles. This gives me a unique perspective on development and greater understanding of business requirements when working on a development project.
My most recent software development projects include:
- a social voting application
- an adventure focused deal finder application with geo-mapping
- a storybook activity app for pediatric patients & their families in hospital
- a peer to peer rental marketplace complete with a reservation & peer review systems
My preference is to build mobile apps in Google's Mobile App SDK (Flutter) which allows me to build native iOS and Android apps from a single codebase. Benefits of using Flutter include:
- exceptionally fast turnaround times
- significant cost savings for my clients
- a single and clean codebase making future development easier and cheaper for clients
- native integrations with Google's serverless applications, cloud hosted databases & storage
I can also develop native apps in Swift/Objective-C or Kotlin/Java if required.
In addition to mobile app development, I also have experience working with:
- Django applications
- developing & implementing machine learning models in Python with scikit-learn
- utilizing TensorFlow transfer learning techniques on Computer Vision models for image recognition engines
- junior web developer working primarily with the React framework
If you have any specific questions, please reach out.
Cheers,
Jeremiah
$60/hr
100%
Job Success
$1M+ earned
Available now
Offers consultations
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Top 1% on Upwork, Fractional CTO helping startups build scalable applications. 100+ products delivered | Companies we supported raised $14.5B+. Expert in React, Node.js, .NET, Python, API integrations, AI automation, and SaaS architecture.
As a Fractional CTO and Solution Architect, I typically join projects when companies need to:
• launch an MVP quickly
• fix slow or disorganized development
• design scalable product architecture
• integrate APIs, automation, or AI features
I work together with my team at Softermii, where we have delivered 100+ Web and Mobile products, helping companies that later raised $14.5B+ in funding.
APEX – AI-Powered Product & Engineering System
To reduce delivery risk and accelerate development, we use our internal framework APEX.
APEX helps us validate product scope, architecture, timelines, and technical risks before heavy development begins.
This allows us to:
• structure the development roadmap
• break features into clear engineering tasks
• accelerate MVP delivery
• reduce costly rework
The result is faster product launches and more predictable development timelines.
What I Can Help You Build
✔ Web Development (React, JavaScript, TypeScript, Node.js)
✔ Web Applications and SaaS Platforms
✔ Mobile App Development (iOS, Android)
✔ Marketplace Platforms
✔ API Development and API Integration
✔ Automation Systems
✔ Artificial Intelligence integrations
✔ Chatbot Development
✔ AI Agent Development
Core Technologies
Web Development
JavaScript, TypeScript, React, Node.js, HTML, CSS, Web Design
Backend & APIs
Python, Node.js, REST APIs, API Integration, SaaS Architecture
Mobile App Development
iOS, Android, React Native
Automation & AI
Artificial Intelligence, Automation, Chatbot Development, AI Agent Development
Industries
• SaaS
• FinTech
• Healthcare
• Real Estate
• E-commerce
Client Feedback
“I would highly recommend Softermii for any programming needs. I am consistently impressed by the quality of the work and team effort brought forth by everyone that we've worked with.”
— VP of Product, Dollar Shave Club
“Softermii delivered the project on time and helped us launch a strong virtual platform that can compete with major solutions in the market.”
— Director General, Event10x
When Clients Hire Me
• You need a Fractional CTO to lead development
• You want to launch a Web or Mobile MVP quickly
• Your current development team is too slow or disorganized
• You need help designing scalable SaaS architecture
• You want to integrate AI, automation, or APIs
If you're building a Web platform, SaaS product, let's discuss your project.
Viacheslav V.
has worked
.
Associated with
Softermii
$1M+
earned
$60/hr
100%
Job Success
$5K earned
Start of list.
End of list.
I've spent the last decade building and scaling software products as a CTO and co-founder. Over 100 projects shipped across SaaS platforms, marketplace platforms, mobile apps, admin dashboards, and enterprise systems.
I handle everything from Figma UI/UX design and prototyping to backend architecture to deployment. When you work with me, you get one person who owns the entire process. No coordinating between designers or developers. No miscommunication. I take your idea from strategy to a live, working product.
Here's what that actually looks like:
→ A fully designed and built product, not just wireframes or a plan
→ One point of contact who understands both the business side and the technical side
→ Honest feedback on what to build and what to skip. I'm not a yes man who builds whatever you ask without thinking about whether it actually makes sense for your business
→ Clean, scalable code that won't fall apart when you start growing
🤔 What My Clients Say:
⭐⭐⭐⭐⭐ "Abdel was easy to work with and quick to adapt. Everything works smoothly now." | The Sonderhood
⭐⭐⭐⭐⭐ "He gave us tools that made scaling possible. We can focus on growing the brand now." | Golverd
⭐⭐⭐⭐⭐ "The platform feels premium, which is exactly what we needed. The booking flow is seamless." | Lore
🚀 Selected Case Studies:
🏆 ROAP | Sports Academy Marketplace (UAE)
Built a dual-sided marketplace platform with a parent-facing mobile app (Flutter) and a full ERP admin dashboard. Multi-tenant architecture supporting dozens of academies. Scaled to 1,000+ active users across the UAE.
📍 Venu | AI-Powered Venue Marketplace
Engineered an AI search engine (OpenAI + LLMs) that lets users find event spaces using natural language. Built on Next.js with PostgreSQL. 10,000+ active users, high retention, and simplified discovery for everything from co-working spaces to wedding villas.
🔗 Bravo Link | AI Smart Notebook
Built a proprietary AI engine with OCR that converts handwriting to digital text, integrated with task delegation and calendar sync. 8,000+ professional users.
💅 Lore | On-Demand Beauty Services
Shipped a three-sided platform. Customer app, professional app, and admin dashboard. Full booking flow, real-time availability, Stripe payments, subscription systems, and review system.
👨💻 How I Work:
I handle the full lifecycle. UI/UX design in Figma, frontend, backend, deployment. You get the speed of working with one senior full stack developer without the overhead of managing a team.
⚙️ Tech Stack:
Frontend: Next.js, React, TypeScript, React Native, Flutter
Backend: Node.js, Express.js, NestJS, REST APIs, GraphQL
Databases: PostgreSQL, MongoDB, Supabase, Firebase
Payments & Infra: Stripe, billing systems, webhooks, authentication
AI: OpenAI, Anthropic (Claude), LLMs, AI integrations, machine learning
Mobile: iOS, Android (React Native & Flutter)
Design: Figma, UI/UX, prototyping
I specialize in SaaS MVP development, B2B SaaS, multi-tenant architecture, marketplace platforms, subscription systems, internal tools, and web applications. I architect systems that hold up under real traffic. You focus on your business. I make sure the technology never becomes a bottleneck.
📞 Ready to talk about your project? Hit the Message button and tell me what you're building. I'll give you an honest assessment of what it takes and how I'd approach it.
Abdelrahman S.
has worked
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