Shun Inagaki

Key Technologies: Key Responsibilities: ISO 20022 Payment Export Migration Treasury Management System - Operation, Management / Development Recruitment Service Launch - MVP Site Development Owned Media Platform Consolidation Infrastructure Reliability Enhancement User Experience / Operational Efficiency Enhancement Engineering Team Leadership / Development Performance Optimization / Cost Efficiency Sales Operations Transformation / KPI Visualization Incident Management / System Reliability Organizational Goal Alignment / Communication Job Posting Auto-Translation System Development Article Translation Management System Development OKR Achievement / Data-Driven Goal Management Article Media Platform Renewal / Project Management Job Board Management System - Business Model Transformation / Freemium Platform Development Data Archiving / Cost Optimization System SEO Optimization / Search Visibility Enhancement Oracle Database Migration (11g to 19c) AWS Infrastructure Automation with CDK Job Board Platform Replatforming / Architecture Modernization B2B Platform Development - Next.js Dashboard / Core Features SCSK Europe Ltd. SCSK Europe Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Leverages Co., Ltd. Lincs Inc. Leverages Co., Ltd. Leverages Co., Ltd. SCSK Europe Ltd. Led the migration of payment instruction export functionality from legacy MT103 format to ISO 20022 pain.001.001.09 standard in a treasury management system. Designed and implemented XML generation logic, validation mechanisms, and format conversion processes to ensure compliance with international banking standards. Leading comprehensive development and operational management of an in-house treasury management system. Driving end-to-end project delivery from specification design through deployment, while managing customer support requests and system incidents. Actively engaging with clients through product demonstrations and technical support to enhance satisfaction and drive business growth. Served as technical lead and project manager for the development of a new recruitment service platform. Conducted comprehensive analysis of market trends, competitor systems, and technical requirements to select optimal technology stack. Successfully delivered high-quality MVP with exceptional conversion rate in rapid timeframe while maintaining cost efficiency. Served as implementation lead and technical advisor for consolidating multiple regional owned media sites into a unified platform for the international business. Conducted thorough analysis of existing systems, requirements, and team capabilities to recommend cost-efficient technology stack that balances performance, maintainability, and development velocity. Led comprehensive infrastructure modernization initiative to improve system reliability, fault tolerance, and operational efficiency. Implemented strategic improvements across infrastructure, database, and application layers, including containerization, auto-scaling optimization, and database segmentation to ensure high availability and performance. Led data-driven UX improvement initiatives for recruitment agent platform, utilizing analytics tools to identify user behavior patterns and operational bottlenecks. Conducted field observations and stakeholder interviews to understand CA workflows, implementing improvements that enhanced both user satisfaction and business efficiency while managing cross-functional collaboration. Successfully managed and developed a team of 4-5 engineers across multiple concurrent projects, fostering a culture of autonomy, ownership, and continuous growth. Established comprehensive development framework including monthly issue-sharing sessions, personalized task assignments aligned with individual career goals, and structured feedback mechanisms. Created transparent KPI monitoring systems and implemented process improvements that significantly enhanced team capabilities, business impact awareness, and cross-functional collaboration. Led comprehensive performance optimization initiatives across multiple systems, combining technical expertise with analytical problem-solving to identify and resolve bottlenecks. Implemented cost-efficient solutions including WordPress caching optimization, database query improvements, and infrastructure architecture decisions that balanced performance requirements with budget constraints. Led cross-functional initiative to transform sales productivity and data visibility for recruitment business division. Conducted comprehensive business process analysis and stakeholder interviews to identify operational bottlenecks. Designed and implemented CRM workflow improvements and comprehensive KPI monitoring systems covering both candidate-facing and client-facing operations, enabling data-driven decision making and strategic planning across sales, marketing, and product teams. Established systematic incident management framework and proactive system reliability improvements. Implemented structured incident response protocols with clear communication timelines and business impact quantification. Conducted systematic analysis of recurring alerts to prioritize resolution based on frequency, business impact, and cost-benefit analysis, reducing operational overhead and improving system stability across multiple services. Established comprehensive goal communication and alignment framework to connect team activities with business objectives. Transformed quarterly planning process from one-way announcements to interactive sessions with transparent business context sharing. Implemented multi-layered communication approach including project kickoffs with QCDS prioritization, bi-weekly progress updates, and impact visualization systems that significantly improved team's business awareness and autonomous decision-making capabilities. Designed and implemented automated translation system for job postings using AWS Translate API to streamline multilingual content creation for international recruitment platform. Developed comprehensive translation workflow including API integration, translation quality management, and content synchronization mechanisms. Created technical infrastructure that balanced translation accuracy with operational efficiency while reducing manual translation overhead. Led development of Laravel Admin-based translation management system to enhance content writer productivity for media article translation workflow. Completed full development cycle from requirements gathering to production release within two weeks. Established systematic translation workflow and quality control processes that received positive feedback from content writers and significantly improved operational efficiency across international media platform. Consistently achieved quarterly OKRs through systematic goal management, data-driven decision making, and proactive progress tracking. Established transparent KPI monitoring systems and progress visualization mechanisms that enabled early issue identification and adaptive strategy adjustments. Fostered team-wide OKR understanding and autonomous contribution culture, resulting in consistent goal achievement and business impact delivery across multiple quarters. Led comprehensive media platform renewal project as Project Manager and technical lead, orchestrating full-stack development, stakeholder coordination, and schedule management. Conducted strategic technology selection including Tailwind CSS adoption for improved maintainability, implemented user-centric CMS functionality through stakeholder interviews, and proactively addressed SEO requirements beyond initial specifications. Successfully delivered on-schedule release despite multiple production incidents by implementing flexible resource allocation, critical path management, and protecting team focus time from interruptions. Led transformative business model shift from traditional recruitment platform to freemium SaaS model, orchestrating comprehensive product development, authorization architecture redesign, and agile methodology transition. Managed complex stakeholder coordination across engineering, Salesforce, and sales teams while implementing systematic QCDS controls and critical path management. Established proactive KPI monitoring system that identified advertising cost optimization opportunities, and architected scalable authorization middleware preventing configuration errors during rapid feature expansion. Successfully delivered initial release on schedule while achieving above-target conversion rates that accelerated paid feature prioritization. Designed and implemented automated old job deletion and archiving system for job board platform, addressing database bloat and query performance degradation. Architected cost-optimized data archiving solution leveraging Apache Hive partitioning format for efficient AWS Athena queries, implemented stream-based CSV writing to prevent memory overflow, and established S3 storage strategy balancing accessibility with cost efficiency. Successfully reduced operational database size while maintaining historical data availability for analytics. Led technical SEO implementation for job board platform in collaboration with marketing team, expanding beyond traditional engineering scope to drive organic growth. Conducted systematic analysis of Search Console data, sitemap configuration, and indexing issues to identify optimization opportunities. Designed and implemented technical SEO solutions including structured data markup for Google Jobs integration, sitemap architecture improvements, and index management that significantly improved search visibility and session metrics. Supported Oracle database migration project from version 11g to 19c for approximately 5 terabytes of data. The project included developing migration scripts, performance testing, SQL query optimization, and validation. Contributed to AWS infrastructure deployment pipeline development using AWS CDK and GitHub Actions as partial implementation lead. The solution enabled environment provisioning, consistent configurations, and deployment automation for microservices. Contributed to comprehensive platform replatforming project for job board, implementing technology stack upgrades, architectural improvements, and infrastructure migration while maintaining service continuity. Proposed strategic process improvements to enhance development velocity, standardized Presenter layer implementation for clean architecture separation, and executed critical technology migrations including ElasticStack version upgrade and containerization of RPA workflows. Established proactive quality assurance practices with daily error log monitoring and comprehensive testing protocols post-launch. Joined a B2B platform development project as emergency support, rapidly delivering four pages including a comprehensive dashboard and core features within two weeks. Conducted security reviews to enhance system protection, while actively mentoring less experienced team members through knowledge sharing sessions. The combined efforts of rapid development, security improvements, and team enablement contributed significantly to the successful on-time release of the project. Migrated payment export format from MT103 to pain.001.001.09 (ISO 20022) Developed XML generation and validation logic for payment instructions Implemented data mapping and transformation from legacy format to ISO 20022 Led development projects including specification design, development, testing, and direct client communication Coordinated development projects and operational tasks using Jira, managing development initiatives, customer support requests and system outages Conducted product demonstrations for prospective clients, clearly articulating product functionality to drive engagement Provided support to existing customers, resolving technical inquiries and proactively improving satisfaction through responsive engagement Selected and implemented Laravel + Inertia.js (React) + MySQL stack based on multi-faceted evaluation of system architecture, security, scalability, team capabilities, and infrastructure costs Completed full-stack development in 2.3 person-months over 1.2 months, enabling rapid market entry Achieved approximately 20% conversion rate, demonstrating high product quality and user experience Proposed Remix + SQLite (EFS) + Drizzle ORM architecture considering system requirements, team skills, and infrastructure resource costs Optimized infrastructure costs while maintaining high performance and scalability Designed architecture for easy maintenance and future portability across different environments Migrated services from EC2 to ECS with optimized Auto Scaling configuration, improving fault tolerance and reducing maintenance overhead Implemented RDS database segmentation and eliminated shared resources across environments to enhance system isolation and reliability Established security update monitoring and response workflows, ensuring timely vulnerability remediation Analyzed user behavior using Clarity and Google Analytics, identifying and resolving critical UX issues that impacted conversion rates Conducted business process analysis and stakeholder interviews, proposing CRM and portal improvements that increased operational efficiency Implemented auto account generation feature for administrative interface, significantly streamlining the activation workflow Transformed goal-setting process by introducing monthly issue-sharing sessions to improve OKR understanding and self-determination, resulting in increased team commitment and business-aligned individual objectives Implemented productivity-enhancing initiatives including ide-helper setup across repositories, staging environment workflow optimization, and systematic alert threshold reviews to eliminate operational bottlenecks Delegated critical responsibilities (PM duties, sprint management, production deployments) with intentional growth opportunities and constructive feedback cycles, improving team autonomy and analytical capabilities Identified and resolved WordPress API caching issues causing 5+ second delays, reducing intermittent latency to cache-refresh-only occurrences through systematic analysis and plugin implementation Optimized database performance through SQL query tuning, algorithm improvements, and MySQL fragmentation resolution across end-to-end system layers Designed cost-efficient architecture using SQLite on EFS instead of RDS, ARM architecture over Intel, and RDS auto-optimization features, creating infrastructure cost management tracking system Conducted business process analysis to understand recruitment workflows, created process flow diagrams mapping system objects to operational steps, and drove implementation of productivity improvements including automated workflows and UI enhancements Designed and built comprehensive KPI monitoring systems with multi-dimensional analysis tracking all recruitment funnel metrics and lead times, enabling performance reviews, strategic planning, and marketing optimization Created KPI visualization system tracking multiple acquisition channels with complete funnel metrics, supporting daily operations and strategic decision-making Developed incident response framework including initial reporting, impact assessment with revenue calculations, temporary mitigation, stakeholder communication, and permanent resolution to maximize stakeholder trust Systematically analyzed alert patterns across services, implementing retry mechanisms for transient ECS network errors, adjusting alert severity for low-priority services, and optimizing notification triggers to reduce false positives Proactively identified and resolved chronic system alerts before Q4 major project launches, eliminating production disruptions and improving development velocity through reduced context switching Redesigned quarterly planning from announcement-based to dialogue-based format, introducing issue-sharing sessions that improved OKR understanding and enabled team members to propose business-aligned initiatives beyond product development Implemented systematic impact visualization including cost reduction dashboards, conversion tracking spreadsheets, and security improvement metrics, enabling team members to understand business impact of their work Established project kickoff protocols with clear QCDS prioritization and continuous reinforcement through daily communication, resulting in team members autonomously proposing implementation changes aligned with project priorities Integrated AWS Translate API into job posting workflow, implementing automated translation pipeline with quality validation and review processes Designed translation accuracy improvement mechanisms including terminology consistency enforcement and context-aware translation optimization Developed bilingual content synchronization system ensuring translation updates propagate correctly across multiple language versions Developed Laravel Admin-based translation management system within two-week timeline, completing requirements definition, design, implementation, and production release Implemented workflow automation and quality assurance features that significantly enhanced content writer productivity, receiving appreciation from translation team for operational improvements Established systematic review processes and validation checkpoints to maintain high translation standards while accelerating content delivery timelines Achieved quarterly OKRs consistently through systematic progress tracking, data analysis, and proactive adjustment of implementation strategies based on performance metrics Implemented transparent goal tracking dashboards and regular progress communication that enabled team members to understand business objectives and contribute autonomously Developed data-driven decision-making framework utilizing KPI analysis and impact measurement to prioritize initiatives and optimize resource allocation for goal achievement Managed end-to-end project delivery as PM through daily standup coordination, critical path identification, and flexible resource reallocation that absorbed schedule delays from parallel production incidents while maintaining original release timeline Led technical architecture decisions including Tailwind CSS adoption over traditional Sass based on maintainability analysis, and implemented user-focused CMS enhancements through stakeholder interviews to optimize content creator workflows Proactively expanded project scope to include comprehensive SEO configuration (canonical tags, trailing slashes, meta tags) through self-directed learning and cross-functional collaboration with marketing team, preventing post-launch optimization delays Orchestrated business model transformation from waterfall to Scrum development, managing cross-functional dependencies and QCDS trade-offs to deliver initial freemium release on schedule with CVR exceeding targets, accelerating paid feature roadmap prioritization Redesigned authorization architecture by consolidating scattered endpoint permissions into centralized middleware layer with comprehensive authorization mapping documentation, preventing configuration errors and improving implementation transparency during service scaling Implemented daily KPI monitoring system detecting abnormal application spike patterns, identified low-value freemium conversions inflating advertising costs, and provided data-driven insights enabling marketing team to optimize ad spend allocation and strategy Designed Apache Hive-compatible partitioning format for archived job data, enabling cost-efficient Athena queries through optimized partition pruning and reducing query costs by organizing data by year/month/day structure Implemented stream-based CSV file writing to S3 using PHP generators and memory-efficient buffering, preventing memory overflow when processing large datasets while maintaining consistent archive generation performance Established automated archiving workflow with configurable retention policies, S3 lifecycle management for cost optimization, and comprehensive monitoring to ensure data integrity during deletion and archival processes Implemented structured data markup enabling job listings to appear in Google Jobs search results, expanding reach beyond traditional search channels and increasing organic traffic Redesigned sitemap architecture from single-category URLs to multi-language, multi-category coverage at root level, resolving indexing gaps identified through Search Console analysis Conducted proactive sitemap and index configuration reviews, identifying and resolving issues that SEO specialists had not detected, resulting in 10% session growth through improved crawlability Developed batch processing programs using PL/SQL and optimized over 1,000 SQL queries Conducted GoldenGate performance testing comparing Oracle 11g and 19c Supported 5TB database migration by developing migration scripts Developed infrastructure as code components using AWS CDK and TypeScript for specific service deployments Implemented CI/CD pipeline configurations using GitHub Actions for automated infrastructure deployment Configured monitoring and alerting with CloudWatch for deployed services Executed ElasticStack upgrade from 7.3.2 to 7.13.1 through comprehensive analysis of all version release notes, GitHub issues, and migration case studies, identifying and resolving configuration changes Proposed development workflow improvement through complete code migration before architecture changes (instead of concurrent migration), and standardized Presenter layer implementation with unified variable naming conventions enabling micro-architecture benefits while maintaining component reusability Migrated RPA environment from EC2 to ECS through Docker multi-stage builds and optimized Python container configuration, evaluated and implemented database-backed queue solution based on cost-benefit analysis, and established daily error log monitoring practice for post-launch issue resolution Developed four pages including dashboard and key features in two weeks, enabling the project to meet its release deadline Conducted comprehensive security review and implemented improvements to enhance system protection and reduce vulnerabilities Shared technical knowledge with less experienced team members, supporting their growth and contributing to overall project success Financial Systems Web Development DevOps / Cloud Database Engineering Leadership Automation