Hamid R. Rezaei

• Developing and maintaining Spring Boot (Java) microservices that expose REST APIs and integrate with other services.
• Building SQL-based Looker Studio dashboards over BigQuery data for revenue and balance analysis, in partnership with product and business users.
• Co-architected a multi-service proof of concept that achieved 100% output parity with existing platforms for one selected trade type over a defined evaluation period; built an AD-backed authentication service, API gateway, and React frontend.
• Designed and implemented a context-aware, in-product AI assistant using React and Spring AI.
• Drove AI adoption across multiple teams by building an enterprise harness with script-backed skills for GitHub, Jira, Confluence, logs, and Jenkins, supported by training and knowledge-sharing sessions.
• Implemented Spring Security and JWT authorization, using JPA with a cloud-hosted relational database.
• Designed and led the migration from legacy scripts to Jenkins/Groovy CI/CD pipelines, automating builds, tests, Sonatype and Checkmarx scans, artifact versioning, Jira and Confluence integration, and deployments across environments.

• Owned architectural design, code reviews, and the delivery roadmap for a scalable data-transfer and synchronization product built on Spring Batch and modular development.
• Contributed to a configurable, event-driven ETL application using Solace, Spring Integration (Java 21), and PostgreSQL, processing high-throughput real-time trading data while preserving lifecycle event order.
• Implemented message acknowledgments, retries, exception handling, and transactional controls to reduce the risk of data loss during concurrent processing.
• Created parameterized Grafana dashboards to improve visibility into application health and performance.
• Designed and owned a secure production file-retrieval application using React, Spring Boot, and Spring Security, guiding authorized users through locating and retrieving files while enforcing backend access controls.
• Evaluated legacy functionality and designed scalable alternatives for phased migration.

• Reduced regression analysis from one week to three hours by parallelizing datasets across Jenkins pipelines and aggregating results in a multithreaded Spring Boot application.
• Created modular Jenkins/Groovy pipelines integrating GitHub, Maven, Nexus, Jira, Ansible, and ServiceNow for build, deployment, and change-management workflows.
• Delivered Java and Drools changes for CFTC, SEC, and Canadian regulatory reporting requirements.
• Refactored legacy applications using OOP and SOLID principles and automated production operations with Bash.
• Supported L2/L3 incident diagnosis and resolution with an international agile team.

• Taught programming, algorithms, flowcharts, Excel and macros, alongside algebra, combinatorics, probability, and geometry for grades 10–12.

Beta

• Architected the Java 25/Spring Boot 4 backend for a construction-estimation platform, using PostgreSQL, Flyway, and modular REST/OpenAPI services.
• Built a transaction-safe estimation engine with hierarchical work scopes, quote resolution, manual overrides, scenario copying, and bidirectional task–estimate synchronization.
• Secured APIs with Firebase authentication, RBAC, and ownership controls; automated keyless GitHub Actions delivery to GCP Cloud Run and Cloud SQL across DEV and UAT.

Live backend · Flutter frontend in progress

• Designed a TypeScript/Hono backend on Cloudflare Workers with shared financial-domain logic exposed through OpenAPI HTTP endpoints and MCP tools.
• Implemented rent, loan, mortgage, property, investment, and expense projections using precise decimal arithmetic and explicit accrual, scheduling, and rounding policies.
• Built strict Zod contracts, consistent HTTP/MCP errors, and private R2-backed CSV exports, backed by GitHub Actions delivery across DEV, UAT, and PROD.

Open-source developer-workflow kit

• Built a portable POSIX-shell toolkit supporting Codex, Claude Code, Gemini CLI, and GitHub Copilot, with 60+ versioned workflows, skills, templates, scripts, and adapters.
• Standardized planning, project knowledge, and session handoffs; added context-injection hooks, non-overwriting installation, adoption audits, and CI smoke tests.