Experienced web and mobile app designer / developer with Zaza.ventures. Successful projects across many industries – music, entertainment, proptech, agtech, HR tech, travel and more.

Trusted by teams at Microsoft, BCG, ASU, Overjet, Stanley Black & Decker, Halliburton, and Toptal. I help founders and high-growth startups turn ideas into investor-ready products without wasting capital on the wrong roadmap, the wrong architecture, or the wrong team. As a Fractional CPO and Fractional CTO, I work across AI product strategy, product discovery, technical strategy, and solution architecture. I help startups decide what to build, how to build it, and how to move from concept to a scalable AI MVP with less rework, less technical debt, and better execution. I lead Vinci Labs, an AI-focused product and technology consultancy that helps founders bridge the gap between idea and execution. My work combines product leadership with deep technical direction so startups can validate faster, scope smarter, and build with confidence. I work across AI agents, agentic systems, RAG pipelines, LangChain, LangGraph, AI automation, AI integration, and startup MVP architecture. That includes shaping product requirements, defining system design, reviewing technical tradeoffs, aligning teams, and guiding delivery toward practical business outcomes. I am typically brought in when a company needs: • Fractional CPO or Fractional CTO leadership • AI product strategy and roadmap definition • AI Architect support for MVP and scale decisions • Build AI MVP guidance from concept to delivery • Technical due diligence, architecture review, or code audit • Alignment between founders, product, engineering, and business teams My background includes work across healthcare, SaaS, EdTech, e-commerce, HRTech, real estate, AgriTech, government, and defense-linked environments, including products with privacy, security, compliance, and governance requirements. I also bring the perspective of a founder and startup advisor. As Director at Founder Institute, I understand the pressure founders face when capital is limited, timelines are tight, and the wrong product or technical decision can become very expensive later. Selected client feedback: • “Exceptional attention to detail in translating complex, deeply customized software into clear, user-friendly content.” — Shirsesh B., Principal Data Scientist, BCG • “Provided essential structure and direction when I was lost, turning my dream app into something real and achievable.” — Ivan B. Senior Casting Producer, Disney • “Invaluable at bridging the gap between business needs and technical teams.” — Boris S., Chief Knowledge Officer, Enlight If you need a Fractional CPO or CTO to shape the roadmap, de-risk the build, and lead execution toward an investor-ready MVP, send an invite or book a consultation.

Creative Mobile Developer with 5+ years of experience building high-performance apps for Android and iOS. Skilled in Flutter, Kotlin, Swift, and React Native. Passionate about delivering clean code, intuitive user experiences, and scalable mobile solutions.

I am a full-stack Ruby developer with extensive experience in a wide variety of business areas, including online advertising, healthcare, real estate, fintech, cloud automation, and more. I write clean, modular, well-documented code with security and scalability in mind and help create simple, friendly, accessible user interfaces. I also contribute to open-source software. My interests span a broad range of non-technical areas, most importantly classical music, travel and modern businesses. Technical skills: * Ruby/Ruby on Rails, Elixir/Phoenix * PostgreSQL, MongoDB, Redis, DynamoDB, RethinkDB * Ember.js, Elm, React, jQuery, SASS, Twitter Bootstrap * HTML5, CSS3, JavaScript (ES6) * TDD: RSpec, MiniTest * Heroku, AWS EC2, DigitalOcean, OpenShift * a perfect command of Git

I am an experience developer specializing in web and mobile development. With several years of experience as a Software Architect and Developer, I have the ability to cater to your web and mobile development and maintenance requirements with alacrity and at low costs to help reduce your Time To Market (TTM) and Total Cost of Ownership (TCO).

Results-driven Software Engineer with 16 years of experience in software development, specializing in building high-quality integrations, CRM systems, and good user experiences. Strong background in C#, JavaScript, and MS CRM. Proven track record of leading teams and mentoring engineers to deliver innovative solutions. Passionate about creating accessible, performant, and maintainable code. I've also released games and am interested in Unity and Unreal Engine projects.

I'm a senior software engineer at Booking, where I currently build our customer data platform. Before that I worked on infrastructure and security teams - so I'm comfortable owning a system end to end, from the data layer up to the parts that have to stay reliable and secure under real production load. What I do best: - Data platforms & backend systems - designing and building customer data infrastructure: pipelines, data modeling, and the services around them. - Infrastructure & security -production systems, deployment and reliability work, and building with security considered from the start rather than bolted on. - Mobile development - native Android applications, and iOS as well. From first prototype to a shipped app. - Algorithms & problem-solving - a strong mathematical background I lean on for anything performance-sensitive or algorithmically demanding. Math has been part of my work for a long time. I ranked in the top 3 at my national mathematics olympiad and was a member of my country's IMO team. I hold a BS in Computer Science and have taught Linear Algebra, Calculus, and Introduction to Algorithms at university level - which means I'm used to explaining technical decisions clearly, not just making them. I'm based in the Netherlands and work fluently in English, Kazakh, Russian, and Turkish (plus basic Dutch, A2). If you're building something in the data, backend, or mobile space and want a partner who'll think carefully about the design before writing the code - I'd be glad to hear about it.

I am a seasoned developer with over 11 years of experience in crafting robust web applications and innovative solutions. My expertise spans full-stack development, having successfully led projects from conception to deployment. With a strong foundation from top-tier educational institutions, I am proficient in multiple programming languages and frameworks. I have co-founded a tech startup and contributed to various organizations, enhancing their digital landscape. My collaborative approach and commitment to high-quality code ensure that your project will be delivered on time and to specifications. If you're seeking a developer who can elevate your project and deliver exceptional results, I would love to discuss how I can contribute to your vision.

Experienced in * C/C++ Language. * DirectX & OpenGL. * HLSL and GLSL. * NVIDIA CUDA. * Graphics engine development. * Car physics simulations and tyre friction models. * Software rendering, ray-tracing, radiosity and lighting. - 3DS Max exporter. * Sound programming DirectSound, OpenAL, OpenSL ES and FMOD. * Windows application development Win API, MFC, and .NET. * Winsock network programming. * Video processing algorithms. * SQL, PHP, Java * App development and publishing for iOS and Android. * OBD-II / ELM car ECU communication. Wifi and Bluetooth. * Small business management.

I help startups and growing businesses build scalable mobile applications, AI-powered products, and backend systems that improve user engagement, automate workflows, streamline operations, and drive business growth. With +8 years of experience in software development, I specialize in building high-performance mobile applications using React Native, Flutter, Swift, and Java. I create intuitive user experiences, maintainable codebases, and scalable architectures that support long-term product growth across iOS and Android platforms. In addition to mobile development, I build AI-enabled applications and backend systems using OpenAI APIs, large language models (LLMs), and intelligent automation workflows. My experience includes integrating AI assistants, chatbot solutions, recommendation systems, document processing, AI-powered search, and intelligent automation features into mobile and web applications. I build robust backend systems using Spring Boot, Java, PostgreSQL, Supabase, and Firebase. My experience includes designing REST APIs, developing microservices, integrating third-party services, implementing secure authentication systems, and connecting AI services to production applications. Over the years, I’ve helped companies modernize legacy applications, improve performance, reduce crash rates by more than 40%, and introduce AI-driven features that improve user experiences and operational efficiency. I have delivered production-ready solutions in fintech, healthcare, SaaS, IoT, and enterprise domains, focusing on reliability, scalability, clean architecture, and intelligent automation. I value clear communication, transparency, and predictable delivery. Clients receive regular updates, practical technical recommendations, and clean, well-structured code that is easy to maintain, extend, and scale. Technology Stack Mobile Development : React Native (TypeScript, Expo), Flutter (Dart),iOS Development, Android Development (Java, Kotlin) AI Integration : OpenAI API, ChatGPT API Integration, LLMs , AI Agents Backend Development : Spring Boot, Java, REST APIs, Microservices, Supabase, Firebase, Node.js, Python API Integration Database : PostgreSQL, MySQL, SQLite, Room Database, Firebase Firestore Cloud & Backend Services : Firebase Authentication, Firestore, Cloud Functions, Push Notifications (FCM), AWS Services Architecture : MVVM, Clean Architecture, Modular Architecture, Scalable Mobile Architecture Testing : JUnit, Espresso, MockK, Unit Testing, DevOps & Tools : Git, GitHub, Gradle, Jenkins, Docker, CI/CD Pipelines I’m available for long-term contracts, dedicated team augmentation, and full product development. I focus on building strong partnerships by delivering high-quality mobile applications, AI solutions, and scalable software systems.