Reiko

JAZEREEL LYDIA GOH REIKO

// SDET, Manual & Automation Mechatronics Engineer

STATUS OK ●

ABOUT ME

A Mechatronics & Robotics Engineer specializing in the 'Safety-Critical Integrity' of autonomous systems. I bridge the gap between physical machines and digital logic to ensure autonomous environments operate with absolute truth.

  • ▷ Forensic System Auditor: Unmasking systemic bottlenecks through binary analysis and hardware-level debugging to identify the 'ground truth' of failing logic.
  • ▷ Automation Architect: Replacing manual friction with custom multi-threaded Python TUIs and image-based logic (OCR) to scale engineering productivity.
  • ▷ Infrastructure Orchestrator: Managing high-availability virtualized environments using Proxmox and Docker to ensure 99.9% uptime for critical services.
  • ▷ Stealth Network Security: Hardening digital perimeters through custom Cloudflare Workers, stealth DNS logic, and automated traffic 'tarpitting' to neutralize probes.
  • ≫ Systems Gatekeeper: Operating with high-integrity 'Black Box' logic — recording the truth of a system, however messy, to ensure stability where failure is not an option.
2023 — Present DBS BANK // TEST ANALYST (MANUAL / AUTOMATION)
  • ≫ Cryptographic Engineering: Engineered a custom TWQR Payment Generator using Python and DES3 Cryptography to unblock UAT development and testing cycles by simulating secure transaction payloads.
  • ▷ Baseline Architecture: Reverse-engineered regional and global specifications to establish the first internal testing baseline for DBS's Taiwan market integration.
  • ▷ Systems Integration: Developed multi-threaded TUI and GUI applications (py_cui, Rich, Kivy) to automate data injection and sanitize complex QR payloads.
  • ▷ Early-Phase Quality: Implemented 'Shift-Left' quality checks during initial coding phases, identifying 'showstopper' logic errors before they reached system-wide integration.
  • ▷ Cross-Platform Stability: Deployed BDD-driven test suites (jBehave, Digital.ai) across SG, TW, and HK, ensuring uniform stability for retail banking apps on iOS and Android.
2022 SIEMENS SG // METRICS VALIDATOR / SOFTWARE TEST ENGINEER
  • ≫ NLP Implementation: Deployed Natural Language Processing (NLTK/Python) to parse and resolve ambiguous user inputs, transforming 'messy' field data into structured requirements.
  • ▷ BI Logic Audit: Verified Business Intelligence logic and metric definitions to ensure that high-level analytics reflected the actual mechanical truth of railway systems.
  • ▷ Big Data Extraction: Leveraged Python and HIVE SQL to manipulate and sanitize large-scale, heterogeneous datasets for LTA and ST Engineering projects.
  • ▷ Compliance Verification: Designed SIT/UAT suites to strictly align software outputs with System Requirements (SRS), maintaining safety-critical railway standards.
2021 — 2022 KEYSIGHT SG // AUTOMATED SOFTWARE TESTING CONSULTANT
  • ≫ HMI Debugging: Audited Human-Machine Interface (HMI) software using C#, identifying and debugging critical logic failures at the hardware-software interaction layer.
  • ▷ Framework Migration: Architected the conversion of legacy manual test suites into automated libraries using SenseTalk (Eggplant Functional) and Selenium WebDriver.
  • ▷ Edge-Case Auditing: Implemented aggressive negative testing to identify system behavior under out-of-scope inputs, securing the platform against unknown failure states.
  • ▷ Heuristic Validation: Designed UAT protocols to verify that automated results maintained 100% parity with legacy human-driven baselines.
2020 — 2021 OCBC BANK // TEST ANALYST (MANUAL)
  • ≫ Equities Launch: Validated and unblocked the launch of the Equities trading platform, ensuring high-integrity execution for complex financial transactions.
  • ▷ Process Automation: Engineered internal macros and Python scripts to automate redundant account setup workflows, accelerating the SIT/UAT testing lifecycle.
  • ▷ Payment Standards: Tested and implemented EMVCo SGQR mobile functions, ensuring regional payment standards were met across the mobile ecosystem.
  • ▷ Stress & Integrity: Executed rigorous stress testing on retail banking apps to identify systemic breaking points and edge-case vulnerabilities.
2020 COVID-19 NATIONAL SUPPORT // HEALTHCARE ASSISTANT / HPB SWABBER
  • ≫ National Recognition: Awarded the COVID-19 Resilience Medal for sustained commitment to national safety: No. 30448
  • ▷ Database Integrity: Managed the national COVID-19 database, ensuring high-fidelity tracking of patient records and test results.
  • ▷ Protocol Execution: Enforced rigorous bio-safety procedures in collaboration with nursing staff across multiple high-risk locations.
2019 VENTURE PTE LTD // SYSTEMS TESTER (FIRMWARE & HMI)
  • ≫ Kernel Diagnostics: Managed an air-gapped Linux testing environment; developed a custom library of Bash scripts to automate kernel-level diagnostic routines.
  • ▷ Interface Integrity: Validated specialized micro-electronics for HMI systems, ensuring signal integrity between custom hardware and control interfaces.
  • ▷ Validation Logic: Engineered novel hardware validation protocols to stress-test prototype logic, reducing manual verification cycles.
2018 — 2019 RAZER SG // TEST TEAM LEAD (HARDWARE & SOFTWARE)
  • ≫ Operational Oversight: Directed a high-throughput testing operation, coordinating a peak force of 30 testers to ensure delivery across parallel product lines.
  • ▷ UAT Architecture: Architected comprehensive User Acceptance Testing (UAT) frameworks for prototype hardware, establishing the quality baseline for global releases.
  • ▷ Efficiency Injection: Developed custom Excel Macros and AutoHotkey automation logic to eliminate repetitive manual telemetry logging.
  • ▷ Technical Liaison: Served as the primary technical bridge to design engineers, translating complex testing telemetry into actionable hardware refinements.
2018 HP SINGAPORE // SOFTWARE TESTER (PROTOTYPE SYSTEMS)
  • ≫ Environmental Stress Testing: Performed aggressive hardware-software validation on prototype systems using oscilloscopes and thermal stress environments (industrial freezers/ovens) to identify failure thresholds.
  • ▷ Defect Reconstruction: Captured and documented non-linear system bugs, recreating complex failure states to unblock firmware engineering cycles.
  • ▷ Workflow Augmentation: Engineered custom Excel Macros and AutoHotkey scripts to inject automation into manual testing workflows, increasing throughput for prototype validation.
2016 — 2018 MANUFACTURING INTEGRATION TECHNOLOGY LTD // TECHNICAL SPECIALIST (SEMICONDUCTOR)
  • ≫ Kinematic Calibration: Managed the assembly and high-precision calibration of silicon wafer 'pick and place' robotics, ensuring micron-level accuracy in high-speed manufacturing.
  • ▷ Vision System Validation: Configured and tested 3D machine vision cameras for chip scanning, bridging the gap between physical optical capture and digital defect detection.
  • ▷ Cleanroom Deployment: Executed onsite systems integration and troubleshooting at AMS Micron, maintaining rigorous cleanroom protocols while resolving hardware-logic collisions.
LANG LANGUAGES
  • ≫ Python:
    Architecting multi-threaded TUIs, custom GUI applications, and NLP-driven data sanitization pipelines using Kivy // Rich // Flask // NLTK.
  • ▷ Java:
    Developing robust automated test suites and framework utilities within enterprise-scale QA lifecycles.
  • ▷ SQL & Big Data:
    Managing real-time transaction states in MySQL // MariaDB and distributed data warehousing via Apache Hive.
  • EN English:
    Technical documentation, SRS/SDS authoring and cross-border stakeholder communication.
  • CN Chinese:
    Professional conversational proficiency for regional coordination and technical collaboration.
OS OS & RUNTIMES
  • ≫ Windows:
    Hardening and orchestrating enterprise-grade environments across Workstation and Server architectures for high-compliance banking systems.
  • ▷ macOS // Unix-like:
    Advanced system navigation and toolchain integration for secure local development and administrative workflows.
  • ▷ Linux:
    Architecting lean, purpose-built nodes using Debian // Raspbian // Alpine for stable edge-computing and server-side automation.
AUTO AUTOMATION
  • ≫ VBA (Visual Basic for Applications):
    Eliminating manual friction within high-compliance banking ecosystems by architecting secure Excel/Access macro-automation and report generation.
  • ▷ Eggplant SenseTalk:
    Implementing image-based automation logic to validate complex industrial HMI software, bridging the gap between high-level UI states and underlying system behavior.
  • ▷ AutoHotkey:
    Developing low-level UI wrappers and macro-driven shortcuts to streamline complex industrial HMI interactions and testing workflows.
LOG SYSTEMS SCRIPTING
  • ≫ PowerShell // Batch:
    Native Windows environment hardening and legacy automation.
  • ▷ Bash (Bourne Again):
    Advanced automation engineering utilized for heavy-duty testing utilities and automated workflow routing.
  • ▷ POSIX Shell (sh):
    Scripts engineered for high-portability in minimal runtime containers.
WEB WEB TECH & UI
  • ≫ Frontend (UX/UI):
    Crafting responsive, high-fidelity interfaces and documentation sites using HTML5 // CSS3 // Sass // Markdown.
  • ▷ JavaScript & PHP:
    Implementing client-side interactivity and server-side logic for dynamic data visualization and tool dashboards.
  • ▷ Tooling & Ecosystem:
    Managing dependency lifecycles and build pipelines using NPM and specialized version control workflows.
DEVOPS DEV & VERSION CONTROL
  • ≫ Atlassian Suite:
    Orchestrating Agile workflows and requirement traceability within JIRA and Zephyr environments.
  • ▷ Git Ecosystem:
    Managing complex code branching and collaboration via GitHub, GitLab, and SourceTree.
  • ▷ IDE Ecosystem:
    Utilizing IntelliJ IDEA for enterprise-scale Java and Python software development, and VS Code for rapid script prototyping.
SENSE TELEMETRY & LOGIC
  • ≫ Postman // NPM:
    Executing automated API contract testing and payload validation for secure gateways.
  • ▷ Grafana // Prometheus:
    Architecting real-time monitoring dashboards for system health and metric visualization.
  • ▷ Jupyter:
    Utilizing Lab and Notebooks for data sanitization, NLP prototyping, and ETL validation.
XRAY LOGIC AUDIT
  • ≫ Binary & Memory Auditing:
    Executing low-level forensic inspection and runtime memory manipulation via HxD // Cheat Engine to identify leaks and vulnerabilities.
  • ▷ Static Analysis (IDA Pro):
    Reverse-engineering proprietary binaries to audit 'Black Box' logic and systemic security gaps.
INFRA HOMELAB ARCHITECTURE
  • ≫ Proxmox VE (LXC):
    Architecting a self-hosted hypervisor environment utilizing lightweight LXC containers and virtual machines to host core services like Nextcloud and Jellyfin without Docker overhead.
  • ▷ Network Segregation:
    Configuring a secure UniFi-based network stack featuring physical hardware migrations, granular VLAN segregation, and Cloudflare Tunnels for secure DNS routing.
IOT HOME AUTOMATION & TELEMETRY
  • ≫ Home Assistant:
    Deploying a centralized Home Assistant ecosystem featuring advanced Zigbee2MQTT device networks and custom YAML configurations for tailored asset control.
  • ▷ HMI Kiosk Deployment:
    Architecting and building a dedicated hardware touch-interface utilizing a Raspberry Pi 5 to display real-time system telemetry and custom Mushroom card dashboards.
Python / ADB DEVICE INTERACTIONS
  • ≫ scrcpy Standalone:
    Leveraging standalone scrcpy binaries and direct low-level Android Debug Bridge (ADB) primitives to orchestrate low-latency mobile device mirror manipulation and UI interactions.
  • ▷ Mobile Hardware:
    Developing and deploying terminal utilities tailored to specific high-end form-factors like the Pixel 9 Pro Fold for custom display configurations.
PAYLOAD CORE UTILITY DEVELOPMENT
  • ≫ TWQR / SGQR Parsing:
    Reverse-engineered EMVCo specifications to architect a full-stack validation suite. Engineered an automation-driven Excel/VBA macro workbook for rapid tabular generation, scaled it into a standalone terminal-based Python engine for native cryptographic payload parsing, and deployed a web interface example hosted via Cloudflare Pages as a live portfolio showcase.
  • ▷ TesserFlux Engine:
    Developing a custom multi-stop public transit navigation application utilizing real-time Singapore LTA DataMall REST API streams to compute optimal routes.
SECURITY VULNERABILITY & LOGIC AUDITING
  • ≫ Binary & Memory Auditing:
    Executing low-level forensic inspection, runtime memory manipulation, and application logic exploitation via HxD hex-editors and Cheat Engine hooks.
  • ▷ Static Analysis:
    Reverse-engineering proprietary binaries using tools like IDA Pro to audit undocumented 'Black Box' execution paths and structural logic flaws.
LOGIC INDUSTRIAL & HARDWARE LOGIC
  • ≫ Protocol Logic:
    Implementing industrial communication and hardware data exchange via Modbus, Siemens LOGO!Soft, and MPLAB embedded firmware environments.
  • ▷ Mechanical CAD Design:
    Drafting high-precision 3D solids and electrical schematics using Autodesk AutoCAD and Inventor for custom hardware fabrication.
DSP ACOUSTIC ARCHITECTURE
  • ≫ Signal Orchestration:
    Orchestrating multi-track live audio signal arrays, spectral noise floor restoration, and dynamic frequency processing via Ableton Live, FL Studio, and Adobe Audition.
BIOMECH KINETIC TELEMETRY
  • ≫ Spatial Logging:
    Logging and parsing real-time spatial metrics against biological strain curves during high-velocity endurance cycling and long-distance expeditions to model physical thresholds.

Contact Nodes

CONTACT FORM

GET CV

▷ GET CV [ CORE ] ◁ ▷ GET CV [ FULL ] ◁