IRUMI KIKUCHI

Software Engineer

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ABOUT ME

Agile software engineer
converting rapid learning into hands-on execution.

Orchestrating development across the full stack — from
intuitive UIs with React/TypeScript to robust backends using Python/Go,
and scalable verification environments via Container technology.
I bridge the gap between frontend and infrastructure
to optimize the entire system.

Prioritizing scalability and automation over just \"working code\".
Armed with a deep curiosity for protocols and data structures,
I dissect complex errors and navigate uncharted technical territories
to deliver logical, root-cause solutions.

WHAT I CAN DO?

Full-Stack Development
Build scalable and maintainable web applications using JavaScript, TypeScript, React, C#, and SQL.
Cloud Fundamentals
Understand core cloud concepts and services across AWS and Azure, with hands-on practice in setting up basic infrastructure and deployment pipelines.
REST API Integration
Develop and integrate RESTful APIs for seamless communication between frontend and backend systems.
No-Code & Automation Tools
Use platforms like Okta Workflows and Microsoft 365 to automate business processes and streamline workflows.
Network Simulation & Protocol Testing
Design and run container-based network topologies using Containerlab, KNE, and Docker. Develop Go-based test harnesses to exercise protocol-level behavior (BGP, IS-IS) and investigate per-test dependencies and interactions. Build reproducible labs and automate bring-up for CI-friendly networking workflows.
Identity & Access Management (Okta)
Implement and manage enterprise account lifecycle and access controls using Okta and Okta Workflows. Work included SSO (SAML/OIDC), SCIM provisioning, MFA policies, API-driven automation, and workflow-based process automation to improve security and reduce manual provisioning overhead.
Team Collaboration
Communicate effectively in cross-functional teams and contribute positively to agile development processes.

HANDS-ON PROJECTS

Developer Project

ASP.NET - Car Loan Calculator

A car loan calculator built with ASP.NET Framework that lets users compare monthly payments across three flexible loan plans based on amount, interest, tax, and term.

ASP.NET Framework HTML CSS C# Javascript

Github

NutriBalance

An AI-powered app built with PartyRock that analyzes meal nutrition and recommends additions for a more balanced, healthier diet.

Generative AI Amazon PartyRock

Link🔗

Java - Othello Game

A simple console-based Othello game where two players can compete against each other. The game includes valid move checks, automatic piece flipping, and game-over detection.

Java

Github

Python - Weather Checker

A console-based weather forecast application that retrieves real-time weather data for any city and displays detailed hourly forecasts with temperature conversions. The application fetches multi-day forecasts, presents hourly temperatures in both Fahrenheit and Celsius, includes weather descriptions, and features error handling for invalid city names with an intuitive formatted table display.

Python

Github

Python - Weather Checker

A web application built with React and Python that leverages Machine Learning (NLP) to analyze and score the alignment between resumes and job descriptions.

React TypeScript Python SpaCy

Github

Web Portfolio

A responsive and animated web portfolio designed and built from scratch to showcase my software engineering background, skills, and projects.

HTML CSS Bootstrap Javascript

Github

Cloud & Infrastructure Projects

Enterprise Windows Server Infrastructure Deployment

Scenario-Based Setup:
Simulated infrastructure for a mid-sized company
with high privacy and security demands.
Domain Services:
Installed Active Directory Domain Services on Server Core
and enforced 30-day password policies via Group Policy.
DHCP & DNS Configuration:
Created DHCP scopes, a superscope, a multicast scope,
and a DNS forwarder
Storage & Virtualization:
Built a storage pool, iSCSI target, and configured
Hyper-V on multiple servers with a working replica.
Deployment Services:
Installed and configured Windows Deployment Services(WDS),
enforced settings through GPO, and restricted boot options.

WindowsServer

Microsoft 365 Environment Implementation and Management

Organization Profile Customization:
Configured company branding, themes,
and helpdesk info in Microsoft 365 admin center.
PowerShell Automation:
Installed M365 PowerShell module, created users,
and assigned licenses via scripting.
Office Apps & Email:
Deployed Microsoft 365 Apps on VMs, tested email delivery
using Exchange Online shared mailboxes and distribution lists.
Exchange & Security:
Managed shared mailboxes, distribution groups,
and malware policies through Exchange Admin Center.
Collaboration & Compliance:
Set up SharePoint sites, document libraries,
and sharing policies tailored for organizational needs.
User & Group Management:
Bulk imported users, configured profiles, and created
Office 365 groups for departments with specific permissions.
Security Implementation:
Enabled Microsoft Defender features, data encryption,
and configured anti-phishing and DLP policies.
Monitoring & Reporting:
Enabled audit logs, configured alert policies for suspicious activity,
and scheduled usage reports for IT admins.

M365

Azure Cloud Administration and Security Project

Deployed & Managed:
Configured virtual machines, virtual networks,
and storage accounts in Microsoft Azure.
Identity & Access:
Managed users, groups, and role-based access control(RBAC)
using Microsoft Entra ID.
Security Configuration:
Applied Conditional Access, network security groups(NSGs),
firewalls, and Key Vault for secure operations.
Monitoring & Compliance:
Enabled Azure Monitor, activity logs, and Defender
for Cloud to track usage and protect resources.
Automation & Resilience:
Utilized templates and backup solutions to support
scalability and disaster recovery planning.

Azure

AWS Cloud Architecting, Security, and Project Development

Core Cloud Fundamentals:
Explored essential AWS services (EC2, S3, VPC, RDS, IAM)
and applied concepts of the Well-Architected Framework
for robust design.
Architectural Design & Deployment:
Designed and deployed scalable, highly available architectures
by leveraging services like Auto Scaling, Load Balancers, and Route 53.
Security & Access Control:
Implemented best practices for cloud security, utilizing
IAM (Identity and Access Management), Security Groups, and KMS
to ensure confidentiality and integrity of resources.
CI/CD & Microservices:
Built a complete Microservices architecture and automated
the deployment process using a CI/CD pipeline
(e.g., CodeCommit, CodeBuild, CodeDeploy/CodePipeline)
for rapid iteration.
Data Pipeline Development:
Hands-on experience in constructing a cloud data pipeline,
integrating services for data ingestion, storage, processing,
and analysis (e.g., S3, Lambda, DynamoDB/RDS, Glue).
Web Application Builder:
Developed and deployed cloud-native web applications,
focusing on serverless and container technologies
(e.g., Lambda, ECS/Fargate)
for cost-efficient and scalable hosting.

AWS

Okta Enterprise Account Management

Scope & Goals:
Implemented enterprise account lifecycle management, SSO, and automated provisioning to centralize access control and reduce onboarding time.
Tech & Tools:
Okta (Universal Directory, SSO, MFA), Okta Workflows, SCIM connectors, REST APIs, and scripting for automation (PowerShell/Node.js).
Outcome:
Decreased manual provisioning effort, enforced consistent security policies, and introduced workflow-driven automation for common identity tasks.

Okta Workflows SSO SCIM Azure AD On-prem AD REST API

Containerlab & KNE Routing Lab

Topology Emulation:
Created reproducible, container-based network topologies using Containerlab and KNE with Docker backends.
Protocol Testing:
Implemented Go-based test harnesses to drive and validate BGP and IS-IS scenarios, focusing on route propagation, convergence, and policy verification.
Automation & CI:
Automated lab bring-up and teardown with scripts and Docker Compose/KNE workflows to support repeatable test runs and CI integration.
Dependency Analysis:
Investigated interactions and dependencies across scope boundaries to isolate test cases and ensure deterministic behavior.