Darong Mean's Location
Gothenburg, Västra Götaland County, Sweden, Sweden
Darong Mean's Contact Details
Darong Mean work email
- Valid
- Valid
Darong Mean personal email
n/a
About Darong Mean
- 10+ years of professional experience in software development.- 4+ years of team lead experience.- Backend development experience in Open Banking, FinTech, REST API, single sign-on (SSO) integration, enterprise system integration, eCommerce, and stream data processing.- Some of my favorite technologies and tools these days are Clojure, Go, Git, Docker, and PostgreSQL.
Darong Mean's Current Company Details
Darong Mean Work Experience Details
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Software DeveloperZimpler May 2023 - PresentGothenburg, Vastra Gotaland County, Sweden- Enhanced robustness of integrations with unreliable banks, increasing acceptance rates by up to 30%.- Optimized deposit flow, improving acceptance rates by up to 30% and reducing session time by 20%.- Implemented an integration feature, reducing a significant amount of operation costs.- Implemented instant refund integrations with Brazilian banks, enhancing the user experience.- Created deposit, payout, and reconciliation integrations with Brazilian banks.- Created deposit, payout, and reconciliation integrations with Finnish banks using SEPA transfer.- Developed deposit, payout, and reconciliation integrations with Swedish banks, supporting PSD2 APIs and fallback solutions.- Implemented B2B payments supporting Bankgiro, Plusgiro, and co-signing.- Resolved issues with bank integrations, ensuring systems processed millions of transactions monthly.
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Spring Java Backend (Remote Contractor)Gamegrid Oct 2022 - May 2023United States- Enabled the business to accept Bitcoin and other cryptocurrencies by integrating with Fireblocks.com.- Implemented Stripe.com integration and addressed support queries about payment failures and card declines.- Improved application logs with Opentelemetry.io, boosting monitoring and troubleshooting.- Enhanced alert system with OpenSearch.org for better incident response.- Fixed race condition issues with Paygarden.com gift cards, streamlining processing and preventing financial losses.- Improved Robux withdrawal process for a more efficient customer experience.- Developed a holiday raffle game, adding an engaging feature and retaining customers.- Implemented SMS rate limits via Telnyx.com, ensuring reliable communication.- Enhanced customer communication with Onesignal.com for email, SMS, and push notifications.- Integrated Adurite.com and Iterable.com, enhancing platform capabilities and user experience. -
Software Developer (Remote Contractor)Paymentology Nov 2021 - Aug 2022London, United Kingdom- Resolved support tickets for failed payments, chargebacks, and MTI timeouts.- Resolved production issues alerted by PagerDuty and Standby channels.- Developed and implemented credit card management APIs using Spring Boot.- Maintained MasterCard and Visa processing systems, handling millions of transactions daily. -
Data Platform Engineer (Remote Clojure Developer Contractor)Digital Commerce Intelligence May 2021 - Oct 2021Singapore- Migrated applications from Azure to AWS, reducing operational costs.- Maintained a data pipeline engine, ingesting data from popular Southeast Asian e-commerce platforms like Shopee.com and Lazada.com.- Pre-processed pipeline data for analytics, enabling merchants to track product performance more effectively. -
Clojure Developer (Remote Contractor)Rakuten Ready Mar 2019 - Apr 2021Quebec, Canada- Maintained APIs for the merchant live dashboard, used by 2500+ stores in the United States, processing 34 million store visits per month, tracking pickup orders, and providing real-time statistics for orders.- Optimized PostgreSQL query performance, reducing response time from 50s to 30s.- Converted SQL queries to Apache Beam streaming jobs, reducing stats endpoint response time from 30s to 1s.- Created a Clojure wrapper for Apache Beam.- Improved test robustness with generative end-to-end tests and migrated Postman tests to Clojure tests.- Enhanced test coverage for AWS SNS and Twilio integrations.- Migrated a simulator tool from TypeScript to Clojure, reducing tool fragmentation. -
Liferay Team Lead/Technical Line ManagerKhalibre Jan 2015 - Dec 2018Phnom Penh, Cambodia- Expanded the development team from 2 to 7 developers.- Enhanced team knowledge in continuous integration, pair programming, and the Mikado method, fostering a culture of high-quality code and system improvements.- Designed technical solutions for Crosswired.com and related projects.- Upgraded Liferay from 6.2 to 7.0, enabling the business to leverage the latest technology for future projects.- Integrated Single Sign-On (SSO) between Liferay, SAP Netweaver, SAP R3, and Keycloak, facilitating customer onboarding.- Integrated SSO between SAP Portal and MS Reporting Service 2012 for a client’s finance team. -
Workstream LeaderKhalibre Apr 2013 - Jan 2015Phnom Penh, Cambodia- Established development and quality assurance processes, including version control, build, and release management.- Created comprehensive learning materials for new team members to facilitate rapid onboarding.- Implemented Liferay with social collaboration features and integrated it with SAP XLSO, ensuring compatibility across organizations and confidence in the security model.
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System DeveloperKhalibre Jun 2012 - Apr 2013Phnom Penh, Cambodia- Delivered EHP 6 Upgrade + HCM Renewal Pack 1, including implementing the HCM Admin Landing Page and cleanup of standard modifications and enhancements.- Completed a performance management project, implementing a program to check appraiser consistency and enhancing appraisal document search criteria.- Developed a C# tool using Visual Studio 2010 to migrate QuickR content to SAP Portal KM, significantly speeding up the process and reducing manual work. The tool can also be sold as a standalone product.- Implemented a CAPTCHA tool with image processing functionality and conducted extensive performance tuning.- Revived and significantly reworked an abandoned project after the original author left the company.
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Clojure Developer (Remote Contractor)Freelance Sep 2015 - Oct 2016- Developed an autocomplete input field, with backend integration using Elasticsearch.- Implemented a multiple-file upload input field with background processing.- Implemented progress feedback during background file uploads.- Created the front end based on the provided design documents.
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Information ManagerImc Trading (Cambodia) Co, Ltd. Apr 2011 - Jun 2012- Implemented in-house sales and stock management systems.- Designed and implemented in-house customer relationship management (CRM) and credit tracking systems.- Ensured accurate data entry and collection.- Maintained data security and accessibility across the company.- Generated reports for managers and shareholders.- Analyzed sales and stock data, reporting findings to the sales manager.
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Software Developer (Internship)Bm Solution Mar 2011 - Apr 2011- Researched and developed an e-book reader application using C#.- Implemented file transfer between the e-book reader application and the back-end server using Windows Communication Framework.
Darong Mean Education Details
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Dali UniversityComputer Science And Technology -
Dali UniversityChinese For Foreign Student
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Royal University Of Phnom PenhComputer Science
Frequently Asked Questions about Darong Mean
What company does Darong Mean work for?
Darong Mean works for Zimpler
What is Darong Mean's role at the current company?
Darong Mean's current role is Backend Engineer.
What is Darong Mean's email address?
Darong Mean's email address is da****@****bre.com
What schools did Darong Mean attend?
Darong Mean attended Dali University, Dali University, Royal University Of Phnom Penh.
Who are Darong Mean's colleagues?
Darong Mean's colleagues are Sarah Louise Nunn, Gabriella Varga, Bastian Sandoval Arriaza, Björn Lexell, Mikael Andersson, Oliwia Heintze, Simon Söderdahl.
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