Hovhannes Shitikyan
Verified Expert in Engineering
Full-stack Engineer and Developer
Yerevan, Armenia
Toptal member since April 7, 2026
Hovhannes is a senior full-stack engineer with over nine years of experience building production-ready AI and blockchain systems. He specializes in agentic AI, LLM pipelines, and Web3 infrastructure, shipping complex, scalable products fast. Clients rely on Hovhannes to deliver secure, high-quality solutions with speed and precision.
Portfolio
Experience
- Blockchain - 9 years
- JavaScript - 9 years
- C#.NET - 9 years
- Next.js - 9 years
- Python - 8 years
- Solidity - 7 years
- Agentic AI - 3 years
- Claude Code - 2 years
Preferred Environment
Claude Code, Visual Studio Code (VS Code), Solidity, Figma, Windows, Codex, LangChain, LlamaIndex, JavaScript, Python
The most amazing...
...solution I've built is the DAO Maker launchpad, a platform that has raised $54+ million across over 120 vetted projects, delivering an average 13x ROI.
Work Experience
Full-stack Mobile Developer
Dark Ocean Tattoo Inc
- Built a production React Native mobile app with real-time data sync, subscription flows, and push notifications, deployed to both the App Store and Google Play.
- Integrated Supabase back end with row-level security, auth flows, and real-time subscriptions to support multi-tenant data isolation across web and mobile clients.
- Delivered a full MVP from zero to launch within a tight deadline, owning front end, back end, and deployment across React, Node.js, and Vercel infrastructure end to end.
Core Engineer
Solicy
- Served as core engineer and built production-ready AI systems, LLMs, RAG pipelines, LangChain apps, and blockchain infrastructure, including dApps, smart contracts, wallets, and decentralized finance platforms.
- Owned core engineering work for AI and software products.
- Developed production-ready AI systems using Agentic AI, large language models (LLMs), RAG, LangChain, LlamaIndex, and semantic search.
- Contributed to AI model integration, prompt engineering, and API deployment using OpenAI, Claude, and Google Gemini.
- Shaped back-end architecture and kept systems stable, scalable, and distributed.
- Applied spec-driven software (SDD) development, microservices design, and system optimization.
- Brought new AI and software research into real, usable products.
- Architected blockchain and Web3 systems, including dApps, smart contracts, wallets, and decentralized finance platforms.
- Leveraged Ethereum, Solidity, and Rust, and integrated decentralized applications.
- Ensured blockchain system security, reliability, and smooth integration.
Fractional Chief Technology Officer (CTO)
Lif3 - Quantum Fintech Group
- Served as chief technology officer at Quantum Fintech Group, leading the development and implementation of technology solutions that drive business growth. Built and scaled a multichain mobile wallet and DeFi infrastructure across six EVM networks.
- Developed a secure multichain mobile wallet using iOS Secure Enclave and biometric authentication.
- Owned back-end infrastructure for DeFi features, including a swap aggregator, staking, and lending, with RPC fallbacks and real-time monitoring to ensure high availability.
- Defined wallet–dApp connectivity standards for governance, yield, and LP flows across all supported chains.
- Set up release trains and crash-rate KPIs to ship reliable updates on iOS and Android every two weeks.
- Ensured systems were scalable, secure, and aligned with business goals.
Core AI Engineer
Talentsift
- Worked on cutting-edge AI systems that power intelligent agent solutions, knowledge retrieval, and automated reasoning.
- Built production-ready RAG pipelines using Weaviate for fast, semantic search over large datasets.
- Developed agentic AI workflows with Claude Code and Cursor, enabling autonomous AI agents to perform complex tasks.
- Designed and implemented LangChain-based pipelines for multi-step reasoning and orchestration of AI agents.
- Applied spec-driven development with Spec Kit and Pydantic to enforce strict software contracts and maintain high code quality.
- Built evaluation (EVAL) frameworks to continuously test and validate AI model outputs for accuracy and relevance.
- Optimized system architecture for scalability, reliability, and low-latency AI responses.
- Collaborated on AI research, prototyped new techniques, and integrated them into production systems.
Head of Development
DAOMaker
- Spearheaded engineering for systems handling token sales, user allocations, and real funds.
- Built core logic for staking, tier systems, and participation in token offerings.
- Designed reusable flows for token launches, including validation, distribution, and user eligibility.
- Improved reliability and security of systems interacting with smart contracts and funds.
- Developed back-end services for wallets, balances, and real-time user data.
Lead Back-end Developer
NINJA Protocol
- Built back-end systems for gaming and NFT products.
- Engineered core logic for tokens, user progression, and wallet connections.
- Designed services for real-time game activity and user balances.
- Defined NFT and marketplace logic across the platform.
- Managed a remote team and set async workflows and delivery processes.
- Supported system scalability, performance, and reliability.
Full-stack Engineer
Optym
- Built features for large-scale routing and delivery optimization systems.
- Developed APIs for real-time route and schedule data.
- Created internal tools for driver planning with validation and error handling.
- Improved performance by optimizing queries and fixing UI bottlenecks.
- Updated database structures to support evolving product needs.
Experience
Talentsift
I also built agentic AI workflows that automatically review, score, and rank candidates based on skills, experience, and context. I developed multi-step reasoning pipelines to enable structured and explainable hiring decisions. Focusing on scalability, low latency, and reliable performance in real-world recruitment systems, I implemented evaluation frameworks to test and improve model outputs continuously.
DAO Maker | DAO Creation/Management Platform
I worked on the front-end, back-end, and smart contract development. I also created new features, fixed bugs, and managed the technical aspects of the project.
Lif3 Wallet App
I worked on front-end and back-end development to deliver a seamless user experience. I also built iOS and Android apps with staking, rewards, and secure transactions. I developed Ethereum smart contracts for staking and rewards, providing bug fixes, new features, and global support.
Swisscheese | DeFi Investment Platform
https://swisscheese.finance/I worked on front-end and back-end development, as well as on the game development portion of the project.
PassXYZ | NFT Platform
I worked on the front end and back end in the initial phase and helped develop the iOS mobile app.
ZeepUp - Food & Beverage
https://www.zeepup.com/Available on iOS and Android, with 100+ partner restaurants and 300+ menus listed.
I built the iOS and Android mobile app using React Native, delivering a seamless cross-platform experience for browsing restaurants, ordering meal deals, and managing reservations. I developed the full ordering and checkout flow, implemented push notifications for exclusive offers, and built the loyalty and rewards system.
I worked on both front end and back end, ensuring smooth API integration and reliable performance across devices.
Education
Master's Degree in Computer Science
American University of Armenia (AUA) - Yerevan, Armenia
Bachelor's Degree in Computer Science
National Polytechnic University of Armenia - Yerevan, Armenia
Certifications
Certified AI & LLM Application Developer
DeepLearning.AI
Professional Certificate in Machine Learning & AI
MIT xPRO
Skills
Libraries/APIs
Pydantic, Node.js, React, Web3.js, REST APIs, Vue, Django ORM, Financial Service API, PayPal API, Stripe API, Stripe Connect, Auth, API Development, Entity Framework, LINQ, OpenAI API, Binance API, Claude API, Stripe, HubSpot API, RxJS, React Router, React Query, Socket.IO, React Testing Library, OpenAPI, Google API, Google Maps API
Tools
Claude Code, Figma, Codex, Azure Machine Learning, Git, Visual Studio, Claude, Auth0, Sentry, Jenkins, Shadcn, Shadcn UI, SendGrid, GitHub, Expo, Terraform, Xcode, AWS IAM, Amazon Simple Queue Service (SQS), Amazon Simple Notification Service (SNS), Amazon Cognito, Azure App Service, Bitbucket, NGINX, n8n, Microsoft Copilot, Amazon Elastic Container Registry (ECR), Amazon ElastiCache, RabbitMQ, Amazon EKS, Webpack, Microsoft Web Services, Prisma, Tableau
Languages
Solidity, JavaScript, Python, SQL, C#, TypeScript, Rust, C#.NET, CSS, HTML, GraphQL, Python 3, Markdown, CSS3, HTML5, Snowflake, XAML, Kotlin, Swift
Frameworks
LlamaIndex, ASP.NET, Angular, Next.js, Express.js, React Native, Django, .NET, Nuxt.js, NestJS, Next.js 14, Jest, Tailwind CSS, Hardhat, Redux, Cypress, LangGraph, .NET MAUI, Blazor, Streamlit, Flask, Flutter, Svelte, Scrapy, AWS HA, Tauri
Paradigms
Microservices, Mobile Development, Model Context Protocol (MCP), Test-driven Development (TDD), UX Design, UI Design, Mobile Design, Mobile UI Design, Database Design, REST, Search Engine Optimization (SEO), Automation, Event-driven Architecture, Microfrontends, Role-based Access Control (RBAC)
Platforms
Visual Studio Code (VS Code), Windows, Blockchain, Ethereum, Amazon Web Services (AWS), Google Cloud Platform (GCP), Azure, Docker, Kubernetes, Vercel, Replit, AWS Lambda, MacOS, Microsoft, Firebase, AWS IoT, DigitalOcean, Databricks, HubSpot, Twilio, Amazon EC2, iOS, Android, Windows Server, Mapbox, Mobile
Storage
MongoDB, Data Validation, MySQL, JSON, NoSQL, Datadog, Microsoft SQL Server, PostgreSQL, Redis, Data Pipelines, Elasticsearch, Google Cloud, Amazon S3 (AWS S3), Database Migration, Amazon Aurora, Amazon DynamoDB
Industry Expertise
Web Design
Other
LangChain, Mathematics, Artificial Neural Networks (ANN), Smart Contracts, Non-fungible Tokens (NFT), Tokenomics, Web3, Retrieval-augmented Generation (RAG), Specs, Open-source LLMs, Evaluation, Weaviate, Agentic AI, DApps, Cursor AI, AI-enabled Applications, Agentic AI Systems, Agentic RAG Systems, Machine Learning (ML) APIs, Full-stack, AI Tools, WebSockets, Ethers.js, Data Engineering, AI Integration, SaaS, RAG Systems, API Integration, Full-stack Development, Front-end, Mobile App Development, Back-end, Back-end Development, Computer Science, Software Architecture, Web Development, Performance Optimization, AI-generated Code, CTO, GitHub Actions, TypeORM, Mobile Apps, Fintech, Cloud, CI/CD Pipelines, Amazon Bedrock AgentCore, API Gateways, Generative Artificial Intelligence (GenAI), FastAPI, ChatGPT API, Vibe Coding, Data Mapping, AI Chatbots, Minimum Viable Product (MVP), User Experience (UX), User Interface (UI), Desktop App, OpenAI, Payment Gateways, Dashboards, User Management, Responsive UI, Tailwind UI, Communication, Anthropic, Financial APIs, CSV, Cloud Infrastructure, Static Site Generators, Legacy Code, AI Agents, Front-end Architecture, Design Systems, AI Agent Orchestration, Agentic Coding, Gemini, Startups, Identity & Access Management (IAM), Mobile Architecture, Technical Leadership, Cloudflare, Web Crawlers, Third-party Integration, Integration, Front-end Development, Workflows, .NET 10, Leadership, LLM Integration, Payment APIs, Performance, High Code Quality, Consulting, Devin, API Design, Architecture, Authentication, Software as a Service (SaaS), Multi-tenant SaaS, Workflow, Web Applications, Maintenance, AI-assisted Development, System Design, System Architecture, Multi-agent Systems, Multi-agent Orchestration, Lovable, App Store Acceptance Process, Solution Architecture, Database Optimization, Code Review, OAuth, Workflow Automation, Data Modeling, Algorithms, Artificial Intelligence (AI), Machine Learning, Deep Learning, Cryptography, Artificial Intelligence of Things (AIoT), APIs, Systems Design, Data Structures, RPC, Prompt Engineering, Semantic Search, Large Language Models (LLMs), Gemini API, Zustand, Axios, Analytics, Data Management, Data Scraping, Supabase, Resend, Early-stage Startups, Infrastructure as Code (IaC), Monitoring, React Hooks, Forms, Digital Platform Development, Azure Blob Storage, PayPal, CRM, Pipelines, Medical Software, Software as a Medical Device (SaMD), Healthcare Software, GDPR, Data Science, App Design, eCommerce, Amazon RDS, Amazon API Gateway, Geolocation, Scraping, Maps, Audio, Vector Databases, Healthtech, Anthropic SDK, Supabase Auth, Content Delivery Networks (CDN), Integrations, UI Animation, UI Engineering, Live Chat, Code Auditing, Security, Web Application Design, Turborepo, ARM Architecture, ARM SoC, QR Codes, DNS, Troubleshooting, Technical Architecture, Multi-tenant Architecture, SOC 2, Decentralized Autonomous Organizations (DAO), Videos, Outlook, Scheduling, Scheduling Tools, Advisory, Audits, Auditing, Customer Support, Client Communication, SQL Server
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