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JUNCHAO MAO

@junchaomao

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Software engineer focused on scalable backend systems and cloud infrastructure.

United States

Message

What I'm looking for

I seek backend/cloud roles where I can build scalable, observable systems, work with distributed data pipelines, and grow in infrastructure and platform engineering within a collaborative, data-driven team.

I am a pragmatic software engineer with hands-on experience building high-performance backend systems, distributed caching, and cloud-native telemetry pipelines. My work has improved performance and reliability — from reducing frontend load times by ~25% for 10K+ daily users to enabling sustained ingestion throughput of 50K+ telemetry events per hour.

I design and deliver end-to-end solutions using Java, C++, Spring Boot, Kafka, Redis, and cloud platforms like AWS, and I prioritize observability, data quality, and efficient architecture. I bring experience mentoring students, diagnosing production issues with metrics and logging, and shipping production-grade systems that scale.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Translation Commons

Dec 2025 - Present (2 months)

Refactored React/TypeScript frontend parameter handling to reduce unnecessary re-renders and improve page load time by ~25% for 10K+ daily users; implemented an error context capture module that enabled diagnosis and resolution of 10+ critical bugs.

React TypeScript Debugging JavaScript QA

Software Engineer Intern

XPZ Instrument Technology Co., Ltd.

Feb 2025 - Aug 2025 (6 months)

Built a Spring Boot ingestion service to normalize high-frequency sensor data from 200+ instruments and optimized PostgreSQL on AWS RDS to reduce write latency by 25%, supporting 50K+ telemetry events/hour.

Spring Boot Java PostgreSQL AWS RDS MQTT Prometheus Grafana

Graduate Teaching Assistant

Northeastern University

Jan 2025 - Feb 2025 (1 month)

Conducted code reviews and mentored students on TypeScript/Next.js applications, focusing on API integration, debugging, and smart contract interaction to improve student project quality.

TypeScript Next.js Code Review Mentoring API Integration Debugging Smart Contracts

Education

Degrees, certifications, and relevant coursework

Northeastern University

Master of Science, Information Systems

2023 -

Pursuing a Master of Science in Information Systems with coursework in High-Performance Computing for AI, LLM Infrastructure & DevOps, and Network Structure & Cloud Computing.

Zhejiang Ocean University

Bachelor of Engineering, Computer Science

2019 - 2023

Completed a Bachelor of Engineering in Computer Science with coursework in Data Structures and Algorithms, Computer Networks, Operating Systems, and Computer Architecture.