I am a seasoned software engineer and PMO leader with a track record of delivering high-scale, robust systems across startups and large enterprises. I excel at architecture, product thinking, and cross-team leadership, with a hands-on coding background in Java, Spring, and distributed systems. My passion is turning complex requirements into reliable, scalable software that users love. Over the last decade I have led multi-disciplinary teams to ship social media platforms, supply-chain middleware, and ESB integrations for financial institutions. I focus on user-centric product design, data-driven decisions, and building scalable infrastructure while mentoring engineers and forging strong partnerships with stakeholders.

Guo Xunan

I am a seasoned software engineer and PMO leader with a track record of delivering high-scale, robust systems across startups and large enterprises. I excel at architecture, product thinking, and cross-team leadership, with a hands-on coding background in Java, Spring, and distributed systems. My passion is turning complex requirements into reliable, scalable software that users love. Over the last decade I have led multi-disciplinary teams to ship social media platforms, supply-chain middleware, and ESB integrations for financial institutions. I focus on user-centric product design, data-driven decisions, and building scalable infrastructure while mentoring engineers and forging strong partnerships with stakeholders.

Available to hire

I am a seasoned software engineer and PMO leader with a track record of delivering high-scale, robust systems across startups and large enterprises. I excel at architecture, product thinking, and cross-team leadership, with a hands-on coding background in Java, Spring, and distributed systems. My passion is turning complex requirements into reliable, scalable software that users love.

Over the last decade I have led multi-disciplinary teams to ship social media platforms, supply-chain middleware, and ESB integrations for financial institutions. I focus on user-centric product design, data-driven decisions, and building scalable infrastructure while mentoring engineers and forging strong partnerships with stakeholders.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
See more

Language

English
Advanced

Work Experience

Implementation Consultant at Chongqing Cummins Engine Co., Ltd.
December 31, 2010 - December 31, 2010
Responsible for research and implementation of the measuring instrument management system; collect customer requirements; draft test cases; train customers; track issues; provide fixes; coordinate with customers during deployment and ensure production stability.
Senior Java Developer at 58.com (Recruitment Technology Department)
March 31, 2015 - March 31, 2015
Led development for SetTop advertising functions and Recruitment commercial products; contributed to architecture decisions and delivery improvements to enhance platform robustness.
Tech Manager/Architecture at 58.com (DAOJIA) – User-end Department
January 31, 2018 - January 31, 2018
Led the Java development team (from ~5 to ~40 members); built middleware including Dayu and Work Order Center as low-code platforms; orchestrated front-to-back services (User Center, Product Center, Marketing Center, Order Center, etc.); improved deployment efficiency and system performance.
Senior Java Development Expert at Guazi.com
September 1, 2021 - September 1, 2021
Led supply-chain central platform construction and common middleware (Order Center, User Center, Product Center, Marketing Center, Payment Center, etc.); guided middleware strategy and low-code capabilities; contributed to performance and scalability improvements supporting growing business.
Senior Java Developer / PMO Leader / Service Deliver Manager at Social Media Platform (Startup)
November 1, 2024 - November 1, 2024
Solely responsible for the Social Media Platform’s notification system; led PMO and Service Deliver management; designed, developed, and delivered the notification system from scratch (up to 1.3M MAU, 200k DAU); managed product design, program management, and data migration of historical data to the new system; implemented data-driven product improvements and vendor coordination.
Software Engineer at Randstad (seconded to Mizuho Security ESB)
November 1, 2024 - November 4, 2025
Maintenance of the existing Enterprise Service Bus (ESB) project; integration support for new projects; coordination with Mizuho London/Asia entities; daily hardware/software maintenance, testing to ensure system stability.

Education

Bachelor at China University Of Geosciences (Wuhan)
September 1, 2002 - July 1, 2006

Qualifications

Invention Patent CN107766235B - A/B test method based on randomized shunting
November 1, 2014 - November 4, 2025
Invention Patent CN110728563A - Method, device and electronic equipment for determining the target vehicle
December 23, 2022 - November 4, 2025
Invention Patent CN112950300A - A vehicle order processing method and device
May 28, 2024 - November 4, 2025

Industry Experience

Software & Internet, Media & Entertainment, Financial Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
See more

Hire a Programmer

We have the best programmer experts on Twine. Hire a programmer in Fukuoka today.