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Jonas Shuai

Mid-level Full-Stack Software Engineer specializing in cloud, microservices, and React/Java

Mainspring EnergyUniversity of San FranciscoMenlo Park, CA3 Years ExperienceMid LevelWorks On-Site

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About

Software engineer with experience at PayPal and JPMC building large-scale onboarding/account setup systems using React/TypeScript with Spring Boot/Node microservices and Kafka. Also built an Ignition-based SCADA monitoring tool at Mainspring Energy that became the default for manufacturing/test engineers by aggregating real-time telemetry and historical test data.

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Key Strengths

  • Owned end-to-end customer-facing onboarding/signup flow (frontend through backend integration) at PayPal
  • Rapid iteration with quality controls: small testable changes, feature flags, automated tests, CI, and post-release monitoring
  • Scalable frontend architecture using shared UI components and custom hooks with strict TypeScript contracts
  • Microservices experience at scale (PayPal/JPMC) with Kafka-based async workflows; addressed ordering/retries/visibility via idempotency and DLQs
  • Built and drove adoption of internal SCADA monitoring tool by iterating with engineers during real test runs
  • Prioritization under competing priorities using customer impact and checkout risk during peak sales events

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Experience

Software Engineer Intern (worked in 2024 & 2025)Mainspring Energy · May 2024 – Aug 2024internship
Full-Stack Software EngineerGap Inc. · Mar 2022 – May 2023
Software EngineerPayPal · Apr 2021 – Mar 2022
Front-End DeveloperJPMorgan Chase & Co. · Mar 2020 – Jan 2021

Education

University of San Franciscomaster, Computer Science (2025)
Boston Universitybachelor, Electrical Engineering (2019)

Languages

English

Certifications

AWS Certified Cloud Practitioner

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Jonas ShuaiMid-level Full-Stack Software Engineer specializing in cloud, microservices, and React/Java