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Skills

  • Python
  • Automation Engineering
  • API Development
  • Cloud Computing
  • Ethereum
  • Linux
  • PostgreSQL
  • Solidity
  • Unix
  • Web3
  • Amazon Web Services
  • API Integrations
  • Automation
  • Docker
  • Engineering

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Services

  • Solidity Smart Contract Developer | Web3

    $65/hr Starting at $500 Ongoing

    Dedicated Resource

    I design and develop secure, production-grade smart contracts and Web3 applications on Ethereum and EVM-compatible networks. My core expertise is Solidity development, smart contract architecture, gas...

    BlockchainCryptocurrencyDAppsDeFiEthereum

  • Production Web3 Infrastructure & Transaction Engineering

    $65/hr Starting at $0 3 months minimum

    Dedicated Resource

    This set of repositories demonstrates real-world tooling for working with Ethereum mempool, private transactions, bundle execution, NFT minting flows, and trading automation. These are not tutorial contracts...

    BlockchainContractsCryptocurrencyDAppsDeFi

  • AI Agents for Engineering Workflows

    $65/hr Starting at $500 Ongoing

    Dedicated Resource

    I design and implement AI agent systems that automate software development and technical workflows. This is not simple ChatGPT usage. I build structured AI pipelines where specialized agents handle planning,...

    Agent OrchestrationAi AgentsAmazon Web ServicesAPI DevelopmentAPI Integrations

  • AI Agents Architecture and Practical Python Implementations

    $65/hr Starting at $0 3 months minimum

    Dedicated Resource

    This resource demonstrates how I design and implement AI agents for real engineering workflows using Python and OpenAI APIs. It includes both a structured multi-agent project template and a practical...

    Agent OrchestrationAi AgentsAmazon Web ServicesAPI DevelopmentAPI Integrations

  • Python Automation & API Integrations

    $65/hr Starting at $500 Ongoing

    Dedicated Resource

    I build reliable Python automation for business and technical tasks: integrations, data processing, scheduled jobs, and internal tools. Typical work I deliver: • API integrations (CRM, payments, analytics,...

    Agent OrchestrationAi AgentsAmazon Web ServicesAPI DevelopmentAPI Integrations

  • Telegram / ChatGPT Bots

    $65/hr Starting at $500 Ongoing

    Dedicated Resource

    I build Telegram and ChatGPT bots that automate real business tasks, not demo chat toys. These bots are used for: Customer communication and support automation Internal team tools and workflow automation...

    AI DevelopmentAPIAutomation EngineeringBotChatbots

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About

Principal Software Engineer | 23+ Years | Automation, Integrations, Web3, AI

I am a software engineer with 23+ years of experience building production systems, SaaS platforms, and complex integrations.

I specialize in turning fragile scripts, legacy code, and disconnected services into reliable automated workflows that run in production.

My main focus today:

• AI agents and engineering automation using Python and OpenAI APIs
• Python automation, API integrations, data processing, and backend workflows

I have worked with large SaaS platforms, payment systems, CRM integrations, trading bots, Web3 infrastructure, and internal automation tools. I understand software from architecture to deployment and can take projects from idea to production without handoffs.

I don’t build demos. I build systems that work, deploy, and stay maintainable.

GitHub: https://github.com/sergeychernyakov (active since 2011)

Work Terms

I work as an independent engineer and take responsibility for the full delivery of tasks: design, implementation, integration, and deployment.

• Clear communication and practical approach
• Production-ready solutions, not prototypes
• Can work with existing codebases and legacy systems
• Comfortable with Linux servers, APIs, databases, and DevOps basics
• Prefer long-term collaborations but also take focused automation tasks

Timezone flexible. Communication via chat and scheduled calls when needed.

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