Publication
Big Data Architecture for the Masses: A ksqlDB and Kubernetes Tutorial
https://www.toptal.com/developers/big-data/ksqldb-kubernetes-tutorial
Dmitrii is available for hire
Hire DmitriiDmitrii Bolotov
Verified Expert in Engineering
Solution Architect and Developer
Nha Trang, Khanh Hoa Province, Vietnam
Toptal member since May 3, 2022
Bio
Dmitrii is an AI enthusiast, cloud architect, and NET/C# expert. A tech geek and startup CTO, he is a commendable person who has journeyed through IT, evolving from a developer to a tech lead in enterprises. Dmitrii is now embracing innovative challenges in the startup world.
Portfolio
Superbench
OpenAI, Gemini, Generative Artificial Intelligence (GenAI), C#, Angular...
ConnectAndSell
ASP.NET, IIS, DotTrace, MSMQ, C#, RabbitMQ, Google Cloud Platform (GCP), GitHub...
Tastier
C#, GitLab, Azure, TypeScript, Point of Sale, POS, Databases...
Experience
- System Integration - 13 years
- API Design - 13 years
- Microservices Architecture - 8 years
- DevOps - 6 years
- Team Management - 6 years
- Product Management - 6 years
- AI Agents - 4 years
- Artificial Intelligence (AI) - 4 years
Work Experience
Tech Co-founder and CTO
2024 - PRESENT
Superbench
- Architected and launched a client-facing multi-agent AI chatbot for B2B2C sales and scheduling. Self-correction, code interpreter, RAG, input transformation, sub-graphs, prompt caching.
- Implemented day-2 operations: LLM observability, testing, and evaluations using the most advanced and up-to-date technologies, getting the best from OpenAI, GCP Vertex AI, and open source products.
- Developed ERP/CRM integrations to give AI chatbot access to real-time operational data.
- Set up cloud infrastructure and a multi-tenancy environment to run the AI customer engagement platform, enhancing scalability and reducing operational costs.
Technologies: OpenAI, Gemini, Generative Artificial Intelligence (GenAI), C#, Angular, LangChain, AI Agents, TypeScript, Node.js, GitHub Actions, Google Cloud, NoSQL, Artificial Intelligence (AI), Pinecone, Qdrant, Large Language Models (LLMs), Large Language Model Operations (LLMOps), .NET, Prompt Engineering, Vertex AI, Retrieval-augmented Generation (RAG), Pub/Sub, PostgreSQL, CTO, Chatbots, System Architecture, Back-end APIs, Anthropic, Claude, Automation, Model Context Protocol (MCP), RESTFul APIs, NestJS, Next.js, System Integration, API Design, AI Chatbots, Langfuse, AI Prompts, Agentic AI, ChatGPT, Harness, AI Workflow, ChatGPT Prompts, Multi-tenant Architecture, Startups, SaaS, Multi-tenant SaaS, Asynchronous Programming, Back-end Architecture, AI Agent Orchestration, AI-assisted Development, LLM Integration, Cursor AI, Product Roadmaps, Go-to-market (GTM) Strategy, Early-stage Startups, Troubleshooting, REST, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Data Quality, AI Engineering, Chrome Extensions, Role-based Access Control (RBAC), Claude API, Agentic AI Systems, AI Voice Agents, LiveKit, Claude Code, Agentic Coding
Troubleshooting Expert and Solution Architect
2022 - 2023
ConnectAndSell
- Performed troubleshooting of memory leaks and central processing unit (CPU) issues causing outages.
- Reviewed and redesigned major system components to improve performance, system scalability, and reliability.
- Mentored team members, introducing them to best practices.
Technologies: ASP.NET, IIS, DotTrace, MSMQ, C#, RabbitMQ, Google Cloud Platform (GCP), GitHub, Databases, Azure SQL Databases, Technical Architecture, Web Applications, Software Architecture, Technical Consulting, Consulting, System Design, CRM Systems, Leadership, Solution Architecture, NoSQL, Pub/Sub, System Architecture, Back-end APIs, RESTFul APIs, Next.js, System Integration, API Design, Multi-tenant Architecture, SaaS, Multi-tenant SaaS, Asynchronous Programming, Back-end Architecture, Database Performance, Troubleshooting, REST, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Data Quality, Role-based Access Control (RBAC), Twilio API
Senior Full-stack Developer
2022 - 2022
Tastier
- Developed multiple features and delivered complete user stories to production.
- Analyzed APIs for integration with other POS systems.
- Automated application delivery and set up CI/CD pipelines on GitLab.
Technologies: C#, GitLab, Azure, TypeScript, Point of Sale, POS, Databases, Azure SQL Databases, Technical Architecture, Web Applications, Software Architecture, Payment APIs, Consulting, System Design, Leadership, NoSQL, Pub/Sub, PostgreSQL, Node.js, System Architecture, Back-end APIs, RESTFul APIs, Next.js, System Integration, API Design, Multi-tenant Architecture, SaaS, Multi-tenant SaaS, Back-end Architecture, Database Performance, Troubleshooting, REST, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Data Quality, Role-based Access Control (RBAC), Twilio API
Founder and CTO
2020 - 2022
Deetask
- Built and launched a Vietnamese marketplace that allows users to search for rates and hire local service providers, similar to Thumbtack in the US.
- Started the project following customer development principles, in-depth interviews, and MVP. Arranged a team of 10 people, among technical and non-technical.
- Architected and delivered the system to production. The back end in C#, ASP.NET Core, Azure Cloud SQL, Elasticsearch, MongoDB, and Firebase. The front end is an SSR Angular app. Hosted in Kubernetes cluster in Civo, CI/CD GitLab, Docker, and Pulumi.
Technologies: C#, ASP.NET Core, Azure, SQL, Elasticsearch, MongoDB, Firebase, Angular, GitLab CI/CD, Pulumi, Team Management, Cost Management, Product Management, TypeScript, Kubernetes, Docker, HTTP REST, Full-stack Development, CSS, HTML, Microsoft SQL Server, Azure Active Directory, Azure SQL, REST APIs, Digital Payments, APIs, Linux, Containers, Cloud Architecture, Distributed Systems, Back-end, Continuous Integration (CI), CI/CD Pipelines, Entity Framework Core, Architecture, CTO, Full-stack, Load Balancers, OAuth, Scalability, Technical Leadership, Cloud, Cloud Infrastructure, API Development, Databases, Azure SQL Databases, Technical Architecture, Angular Material, Cloudflare, Web Applications, Software Architecture, System Design, Leadership, Solution Architecture, NoSQL, Pub/Sub, System Architecture, Back-end APIs, RESTFul APIs, System Integration, API Design, Multi-tenant Architecture, Startups, SaaS, Multi-tenant SaaS, Back-end Architecture, Database Performance, Product Roadmaps, Go-to-market (GTM) Strategy, Early-stage Startups, Troubleshooting, REST, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Role-based Access Control (RBAC)
Senior Back-end Developer
2019 - 2020
Videoland
- Redesigned and developed video ingest flow, which increased the speed and throughput of video processing up to 10 times. Used FFmpeg, Kubernetes CronJob, and Azure media services.
- Integrated analytics, BI tools, and recommendation system. Developed new product features like generating video strips.
- Resolved incidents, participated in day-2 operations, and challenged DevOps culture.
Technologies: C#, TypeScript, PostgreSQL, Redis, MongoDB, Terraform, DevOps, Dynatrace, Akamai, Kubernetes, OpenTracing, API Integration, Microsoft SQL Server, Azure DevOps, Azure App Service, REST APIs, Amazon Web Services (AWS), APIs, Linux, Containers, Cloud Architecture, Distributed Systems, Continuous Integration (CI), CI/CD Pipelines, Entity Framework Core, Architecture, Node.js, Load Balancers, Back-end Development, OAuth, Scalability, Technical Leadership, Cloud, Cloud Infrastructure, API Development, Databases, Azure SQL Databases, Technical Architecture, Web Applications, Software Architecture, System Design, Leadership, Solution Architecture, NoSQL, System Architecture, Back-end APIs, RESTFul APIs, System Integration, API Design, SaaS, Multi-tenant SaaS, Back-end Architecture, REST, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Role-based Access Control (RBAC)
Tech Lead and Senior Back-end Developer
2017 - 2019
Zelf
- Designed and built high-load, scalable, reliable, meeting the requirements PCI DSS system over microservices from scratch.
- Arranged a tech team. Found and hired first-class developers and organized development process, including Scrum meetings, code reviews, one-on-ones, and incident management.
- Developed product features like P2P transfers, KYC, on-demand cards, and others.
Technologies: C#, .NET Core, Google Cloud, SQL, RabbitMQ, EventStore, OpenTracing, Elasticsearch, Prometheus, Kubernetes, Docker, GitLab CI/CD, API Integration, Microsoft SQL Server, REST APIs, Digital Payments, APIs, Containers, Cloud Architecture, Distributed Systems, SendGrid, Twilio, Back-end, Continuous Integration (CI), CI/CD Pipelines, Entity Framework Core, Architecture, Load Balancers, Back-end Development, OAuth, Scalability, Payment Gateways, Technical Leadership, Cloud, Cloud Infrastructure, API Development, Azure Cognitive Services, JavaScript, Speech-to-Text (STT), Databases, Technical Architecture, Web Applications, Event-driven Architecture, Know Your Customer (KYC), Software Architecture, Payment APIs, Leadership, Solution Architecture, Chatbots, System Architecture, Back-end APIs, RESTFul APIs, System Integration, API Design, SaaS, Multi-tenant SaaS, Early-stage Startups, REST, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Global Banking, Finance, Role-based Access Control (RBAC)
Lead Back-end Developer
2014 - 2017
MDB Bank
- Implemented a Windows phone app for the formerly known MDM Bank, ranked in 2nd place in Markswebb's competition.
- Analyzed business requirements and architected system design and core components.
- Migrated to microservices architecture when the system got too large.
- Integrated a card processing center, ABS, billing, and other internal banking services.
- Maintained a developed system and participated in building, monitoring, and tracing CI/CD processes.
Technologies: ASP.NET, Web API, Microservices, Entity Framework, RabbitMQ, Test-driven Development (TDD), SQL, API Integration, Microsoft SQL Server, REST APIs, Digital Payments, APIs, Amazon Web Services (AWS), Back-end, Architecture, Back-end Development, OAuth, Technical Leadership, API Development, Databases, Technical Architecture, Web Applications, Know Your Customer (KYC), Software Architecture, Payment APIs, Solution Architecture, Back-end APIs, RESTFul APIs, System Integration, API Design, REST, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Global Banking, Finance, Role-based Access Control (RBAC)
.NET Developer
2011 - 2014
Early Career
- Developed features for business process management and ERP products using C#, ASP.NET Web Forms, WinForms, FireBird, ADO.NET, XML, IIS, .NET Framework 2.0 - 3.5, WPF, and WCF.
- Designed and developed tools for automated testing with Windows Presentation Foundation (WPF).
- Researched and tested various new tools and technologies.
Technologies: C#, .NET, XML, IIS, jQuery, CSS, JavaScript, Windows Presentation Foundation (WPF), MySQL, APIs, Back-end, Back-end Development, API Development, Databases, Web Applications, RESTFul APIs, System Integration, API Design
Experience
Nirvana
Built a Vietnamese blogging platform from scratch.
The back end was built with C#, .NET Core, WebAPI, and Azure SQL. The front end was developed with Angular SSR, hosted on the managed Kubernetes cluster, and Editor.js was used for next-gen rich editing.
The image optimization was performed through Thumbor, with Recombee integration as a recommendation system.
The back end was built with C#, .NET Core, WebAPI, and Azure SQL. The front end was developed with Angular SSR, hosted on the managed Kubernetes cluster, and Editor.js was used for next-gen rich editing.
The image optimization was performed through Thumbor, with Recombee integration as a recommendation system.
Deetask
A Vietnamese marketplace that allows users to search for, rate, and hire local service providers.
I designed the system's architecture and built an MVP. The client-server app had a back end in C# WebAPI, SQL for storing user data, and Elasticsearch for fast searching. The front end is an SSR Angular app hosted in a managed Kubernetes cluster.
I designed the system's architecture and built an MVP. The client-server app had a back end in C# WebAPI, SQL for storing user data, and Elasticsearch for fast searching. The front end is an SSR Angular app hosted in a managed Kubernetes cluster.
SIA ZELF
ZELF is an instant bank messenger application that sends and receives money quickly by text or voice.
As a tech lead, I designed the system and built core features like creating accounts, money transfers, and notifications.
As a tech lead, I designed the system and built core features like creating accounts, money transfers, and notifications.
Education
2009 - 2016
Master's Degree in Computer Science
Izhevsk State Technical University - Izhevsk, Udmurt Republic, Russia
Certifications
JULY 2022 - JULY 2025
AWS Certified SysOps Administrator - Associate
Amazon Web Services
JANUARY 2017 - PRESENT
Developing Microsoft Azure Solutions
Microsoft
JANUARY 2017 - PRESENT
Microsoft Azure and Web Services
Microsoft
JANUARY 2017 - PRESENT
Microsoft Certified Solution Developer
Microsoft
Skills
Libraries/APIs
Web API, Entity Framework, REST APIs, Node.js, API Development, Back-end APIs, Claude API, Twilio API, jQuery, Azure Cognitive Services
Tools
GitLab, RabbitMQ, Azure App Service, Claude, AI Prompts, ChatGPT, Claude Code, GitLab CI/CD, SendGrid, AWS ELB, AWS Fargate, Terraform, Dynatrace, Grafana, DotTrace, GitHub
Languages
C#, SQL, TypeScript, XML, C#.NET, HTML, JavaScript, CSS
Frameworks
.NET, ASP.NET Core, .NET Core, ASP.NET, ASP.NET Web API, Entity Framework Core, Angular, AngularJS, Windows Presentation Foundation (WPF), Angular Material, NestJS, Next.js, Material UI
Paradigms
Microservices Architecture, DevOps, Agile, Microservices, Continuous Integration (CI), Event-driven Architecture, Automation, Model Context Protocol (MCP), Asynchronous Programming, Back-end Architecture, REST, Role-based Access Control (RBAC), Azure DevOps, Test-driven Development (TDD)
Platforms
Google Cloud Platform (GCP), Vertex AI, Langfuse, Harness, LiveKit, Kubernetes, Apache Kafka, Azure, Firebase, Docker, Amazon Web Services (AWS), Twilio, Linux
Storage
NoSQL, PostgreSQL, JSON, Microsoft SQL Server, Azure SQL, Databases, Azure SQL Databases, Database Performance, MongoDB, Elasticsearch, Redis, MySQL, Google Cloud, EventStore, Azure Active Directory
Other
APIs, Software Development, Cost Management, Web Services, Team Management, Chatbots, HTTP REST, Full-stack Development, API Integration, Digital Payments, Cloud Architecture, Distributed Systems, Back-end, CI/CD Pipelines, Architecture, CTO, Full-stack, Back-end Development, OAuth, Scalability, Payment Gateways, Technical Leadership, Cloud Infrastructure, Technical Architecture, Cloudflare, Web Applications, Cloud Platforms, Know Your Customer (KYC), Software Architecture, Payment APIs, Technical Consulting, Consulting, System Design, CRM Systems, Leadership, Solution Architecture, Large Language Models (LLMs), OpenAI, Gemini, AI Agents, Artificial Intelligence (AI), Prompt Engineering, Retrieval-augmented Generation (RAG), Pub/Sub, System Architecture, Anthropic, RESTFul APIs, System Integration, API Design, spec-kit, AI Chatbots, Agentic AI, AI Workflow, ChatGPT Prompts, Multi-tenant Architecture, Startups, SaaS, Multi-tenant SaaS, AI Agent Orchestration, AI-assisted Development, LLM Integration, Cursor AI, Product Roadmaps, Go-to-market (GTM) Strategy, Early-stage Startups, Troubleshooting, Third-party Integration, Third-party APIs, Integration, Enterprise Systems, Authentication, Global Banking, Finance, Data Quality, AI Engineering, Chrome Extensions, Agentic AI Systems, AI Voice Agents, Agentic Coding, Product Management, Recommendation Systems, Containers, Load Balancers, Cloud, Point of Sale, POS, Pinecone, Pulumi, Thumbor, OpenTracing, Prometheus, Akamai, IIS, MSMQ, Speech-to-Text (STT), Generative Artificial Intelligence (GenAI), High-load, LangChain, GitHub Actions, Qdrant, Large Language Model Operations (LLMOps)
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