Mayank

Software Engineer — Java / Spring Boot / Full-Stack · Bilingual Technical Coordination (JP–EN)

I build backend systems and bridge Japanese business stakeholders with engineering teams.

Tokyo, Japan · Japanese: N3 · English: Business fluent · Engineer/Specialist in Humanities visa (valid to 2030) · Open to new opportunities

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Backend systems, IoT platforms, and cross-team delivery built end to end.

OpsBridge incident dashboard showing unresolved incidents, priority breakdown, and recent incident list in Japanese

OpsBridgeCompleted

An internal incident-management platform, PagerDuty-style, giving teams one shared place to declare outages, track them against real SLA deadlines, and stay in sync through live WebSocket updates and email alerts.

  • Role-based access control, optimistic concurrency handling, and a full audit trail
  • Bilingual EN/JA interface
  • 589 automated tests, with a CI/CD pipeline deploying to AWS EC2 via Docker
Java 21 Spring Boot PostgreSQL React TypeScript WebSocket Docker / AWS EC2
GitHub → Live demo →
SafeBed dashboard showing bed monitoring cards by room, in Japanese, with fall-risk and normal status indicators

SafeBed — IoT Fall PreventionCompleted

A full-stack, IoT-integrated fall prevention monitoring system for care facility beds, built solo end to end.

  • Real-time alert system with threshold-based notifications
  • Live data visualization dashboards for care staff
  • Showcased at a Japan industry exhibition, representing the company publicly
IoT Real-time alerts Data visualization Bilingual EN/JA UI
GitHub → Live demo →
MeriAru sign-in screen for the employee management system

MeriAru — Employee Management SystemCompleted

Designed and developed the backend architecture for an employee time-tracking and management system.

  • Attendance logging
  • Submission and manager-approval workflow
Backend architecture Attendance tracking Approval workflows
Diagram: a job submitted through a JWT-authenticated API is scheduled by Quartz, executed with retry and backoff via Resilience4j, and tracked through a live status pipeline

TaskFlow EngineIn progress

A backend job-scheduling engine supporting one-time and recurring (cron) jobs, automatic retry/backoff, and a live status pipeline.

  • JWT-based authentication with role-based access control
  • Bulk job import via Spring Batch
  • Resilience patterns for downstream calls
Java 21 Spring Boot PostgreSQL Quartz Spring Security (JWT) Resilience4j Spring Batch Docker
Diagram: client needs are planned into a POC prototype, signed off by the client, then handed to engineering

Salon Management SystemCompleted

Sole technical liaison between a Japanese client and the engineering team, from early solution planning through legacy system migration.

  • Built POC prototypes for client demos, supporting pre-sales evaluation and requirement sign-off
  • Translated client business challenges into functional and technical specifications
  • Managed feasibility reviews, release milestones, and legacy migration coordination
  • Ran requirement-gathering sessions entirely in Japanese and English
Diagram: internal and external stakeholder requirements flow through architecture and feasibility analysis into scoped module changes for the dev team

Enterprise SystemIn progress

Analyzing the technical architecture of a large-scale enterprise system and translating module change requirements for the development team.

  • Supporting technical feasibility assessments and design reviews
  • Coordinating with internal and external stakeholders

SKILLS

What I work with day to day.

Languages

  • Java
  • TypeScript / JavaScript
  • C++
  • C

Backend & APIs

  • Spring Boot
  • Node.js / Express
  • WebSocket
  • REST-style web APIs

Frontend

  • React
  • HTML / CSS

Databases

  • PostgreSQL
  • MongoDB
  • MySQL / SQL

Cloud & Delivery

  • Docker
  • AWS EC2
  • CI/CD
  • Git / GitHub

Engineering & Collaboration

  • Automated testing
  • System design
  • Architecture & feasibility analysis
  • Bilingual technical documentation (EN/JA)

EXPERIENCE

Where I've built this.

Meritech — Japan Division

Nov 2024 — Present · Japan
Full-Stack Developer & Bilingual Coordinator
  • Built OpsBridge, a personal incident-management platform with live WebSocket synchronization, role-based access control, and a 589-test automated suite, deployed via Docker to AWS EC2.
  • Sole developer of SafeBed, an IoT fall-prevention monitoring system with real-time alerts, later showcased at a Japan industry exhibition.
  • Leading end-to-end client-facing delivery for a salon management system as sole technical liaison, from POC to legacy migration coordination.
  • Currently analyzing enterprise system architecture and translating module change requirements between business and engineering stakeholders.

Meritech — India Division

May 2024 — Oct 2024 · India
Technical Trainee / Junior Developer
  • Deepened full-stack web development skills while completing internal Japanese business communication training.
  • Practiced Japanese through real internal interviews and cross-team interactions in preparation for deployment to the Japan division.

CodeQuotient

2023 — 2024 · India
Software Development Intern
  • Gained hands-on experience across HTML, CSS, JavaScript, Node.js, Express, MongoDB, SQL, C, and C++.
  • Built multiple projects spanning frontend, backend, and database layers: an e-commerce platform, a discussion portal, a C++ text editor, a to-do app, and a stopwatch app.

GET IN TOUCH

Let's talk.

Tokyo, Japan · +81 70 9447 3707 · ms8955355@gmail.com

Japanese: N3 · English: Business fluent · Hindi: Native

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