WWNIT SOLUTIONS
RUEN

Hi! I'm Ivan.

I build services and automate processes. I help with infrastructure, launch and ongoing support.

Solutions

Service development, infrastructure and automation for a specific challenge.

Cases

Real challenges, the solutions and the project outcomes.

Process

From the first conversation to launch and support.

Journal

Engineering notes and articles from practice.

Research

Technical studies, experiments and scientific publications.

Resume

Work experience, skills and a PDF resume.

Have a project in mind?

Get in touch through Telegram or email.

WWNIT Solutions
RUEN

Resume

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CURRICULUM VITAE / WWN

Ivan Velichko

Fullstack Development, Infrastructure & Management

I build web services, accelerate software delivery and keep infrastructure running reliably. I combine fullstack development, DevOps and frontend team coordination, from the user interface to deployment and maintenance. I automate manual operations so teams spend less time on repetitive work and service failures.

Saint PetersburgRemote · project engagements and long-term collaboration
wwr0ngn4m3@gmail.com ↗Telegram: @wr0ngn4m3 ↗

Skills

Infrastructure and access
Linux, Docker, Kubernetes, Helm, GCP, Yandex Cloud, Terraform, Ansible, HashiCorp Vault, LDAP
CI/CD and automation
GitLab CI, Jenkins, GitHub Actions, Argo CD, Harbor, SonarQube, Python, Bash
Observability
Prometheus, Grafana, ELK, Sentry
Development and data
TypeScript, Next.js, React, Redux, Node.js, Express.js, Solidity, Web3, PostgreSQL, Microsoft SQL Server, MariaDB, MongoDB

Experience

March 2020 — April 2023

Enecuum

Fullstack Developer

Worked with the team on blockchain ecosystem services, research prototypes and test infrastructure.

ENEX DEX and Web3

  • Implemented ENEX DEX Web3 authentication, transaction creation and signing. React/Redux frontend; Express.js and Docker backend.

    Delivered the DEX transaction layer, enabling blockchain operations through the product interface.

  • Analyzed Uniswap and PancakeSwap mechanics for DeFi services.

    Established a basis for product and technical decisions informed by existing DeFi service mechanics.

Cross-chain and research

  • Designed and tested smart contracts; contributed to the architecture of the Enecuum bridge to Ethereum-like networks.

    Contributed to broader Enecuum interoperability by implementing bridge components for Ethereum-like networks.

  • Developed a distributed VRF PoC with Solidity contracts, consumer contracts and distributed nodes.

    Turned a research concept into a software prototype, providing a technical basis for evaluating further development.

Testing and delivery

  • Built core network test infrastructure with Node.js, Mocha, MongoDB and PM2; mobile UI tests with UI Automator and Appium.

    Reduced repetitive manual testing of the network core and mobile application through automated test scenarios.

  • Configured GitHub Actions and Docker, maintained test nodes, contributed vulnerability fixes and Telegram interface integration.

    Automated test version preparation and provided an environment for change validation and vulnerability remediation.

December 2023 — August 2025

CodeBurst

Fullstack development · frontend coordination · DevOps

Team development of a PaaS platform. My contribution: frontend implementation and coordination, backend integrations for automation, and shared DevOps work.

Frontend

  • Developed the PaaS frontend with TypeScript, Next.js and SSR.

    Delivered the PaaS user interface for service management, connecting frontend workflows to platform functionality.

  • Coordinated frontend development alongside hands-on interface implementation.

    Provided frontend coordination from technical decisions through implementation, combining delivery responsibility with hands-on development.

Backend integrations and automation

  • Developed DevOps scripts for cloud and infrastructure operations and backend code integrating them into the platform.

    Integrated infrastructure automation into the platform backend, replacing recurring manual operations with programmatic workflows.

  • Contributed to shared DevOps work with Kubernetes, Argo CD, Terraform, Ansible and CI/CD.

    Established repeatable deployment within shared team infrastructure, reducing reliance on manual execution.

November 2024 — present

Zoloto585

DevOps Engineer · contract engagement

Automation, maintenance and development of infrastructure for commercial services.

IaC and delivery workflows

  • Automated e-commerce configuration with IaC and GitLab-triggered deployment; IaC for Grafana and other services.

    Reduced configuration deployment time to roughly one-third. Automation replaced manual application associated with errors, repeated deployments and delays of up to 5 minutes.

  • Built and maintained GitLab CI and Jenkins for Python, .NET and Node.js; contributed Helm chart standards and documentation.

    Standardized build and deployment workflows across 3 technology stacks. Shared pipelines and standards establish a consistent release process.

  • Deployed applications with Helm, maintained Kubernetes and GCP infrastructure and integrated cloud services.

    Provided operational support for applications in Kubernetes and GCP, including deployment and infrastructure service integration.

Observability and reliability

  • Diagnosed backup-related Sentry disk blocking; configured Snuba consumer recovery, monitoring and Grafana alerts.

    Eliminated manual Sentry recovery after backup-related failures. Previously, outages occurred roughly twice a week; stable operation has continued since the fix through the present.

  • Deployed SonarQube and automated project synchronization through GitLab and SonarQube APIs.

    Eliminated manual project synchronization between GitLab and SonarQube, reducing administrative work in code quality onboarding.

  • Maintained centralized ELK logging and service monitoring.

    Centralized access to service diagnostic data, reducing separate log collection during troubleshooting.

Services, access and protection

  • Automated StormWall and Qrator Labs interactions; configured monitoring, alerts and documented response procedures.

    Reduced manual operations during DDoS incidents through automated actions and documented response procedures.

  • Integrated LDAP and worked with HashiCorp Vault.

    Centralized access administration and established secrets management through Vault.

  • Maintained the existing Harbor registry and administered PostgreSQL, Microsoft SQL Server and MariaDB.

    Provided maintenance for the image registry and databases used in application deployment and operation.

July 2026 — present

LLMOps

Project development · LLMOps Engineer

LLM operations platform development alongside the Zoloto585 engagement.

Development and integration

  • Deployed Open WebUI and Ollama, connected the web interface to models, and configured Angie as the LLM service entry reverse proxy.

    Provided browser-based model access without requiring inference tools on each user’s workstation. Model execution and ingress are managed on the service side.

  • Design of Langfuse integration: call tracing, prompt versioning and dataset-based response evaluation. Definition of latency, error and token usage metrics.

    Target outcome: detect regressions before release and diagnose poor responses using traces.

Education

Saint Petersburg State University of Aerospace Instrumentation (SUAI)

Specialist degree · Information Security

September 2018 — June 2023

Information Security of Automated Systems. Degree completed.

Saint Petersburg State University of Aerospace Instrumentation (SUAI)

Postgraduate study · Information Security

October 2023 — September 2026

Languages

Russian, English — B1