Wellsen Wellsen Email & Phone Number

Jakarta Selatan, Jakarta, Indonesia

We start from MC Payment. We are now continuing the journey as iFortepay. What I do now:- Plan, test, and implement technical aspects of domain and organizational migration from MC Payment to iFortepay in response to company acquisitionBuild a cost efficient data warehousing system across several business units to provide visualizations and insights, and unlock more possibilities for data driven strategic business decisions, providing data to support Operations, Marketing, and Management- Improve utilization of Cloud resources in order to reduce Cloud spending and increase efficiency- Vendor analysis

Jakarta Selatan, Jakarta, Indonesia

Acting as a counselor to every tech stack and architecture used in our ecosistem. Creating PoC (Proof of Concept) of a proposed system that can benefit to our system. Research newest technology that can benefit to our business. Ensure that the technical ecosystem is comply to the regulation. Participate in ISO27001 and PCI DSS auditing. And many more.

Jakarta Selatan, Jakarta, Indonesia

MC Payment (PT MCP Indo Utama) is susbsidiary of Djarum Group, sister company of ALTO, Blibli, and Tiket.com. I lead backend engineer of Payment Gateway sistem. Helping transforming monolith system in to microservices architecture.

Jakarta Selatan, Jakarta, Indonesia

- Decouple monilithic application and database into microservices with database per service.- Provide feedback and suggestion for the application ecosystem.- Create detailed POC of proposed changes according to business priority, including benchmarking, cost estimation, SWOT analysis if needed, development effort, and impact from different perspective and other departments.- Research of new technology that could help to get a better performance as needed.- Balancing between technology advancement and business needs by priority, timeline, roadmap, and cost factor.- Get involved in vendor product and technical meet and provide feedback and suggestion.- Vendor (product / service) analysis to give insight on which one would be the most suitable for our certain use cases, including cost factor, integration and operational effort, compliance to the regulation, and technical aspect.- Present and demo some system to the government to comply to the regulations.- Review PKS on the technical side to ensure technical complaiance.- Proposing IT related policy, auditing, and monitoring on different level of Organizational Unit.- Provide feedback and suggestion for security aspects of current and future architectural and application changes.- Reaching USD 40 million of daily transaction volume (Feb 7, 2022).

Kota Tangerang Selatan, Banten, Indonesia

- Transferred to Global Loyalty Indonesia (subsidiaries of Alfamart Group) to build Alfagift and it's internal applications, including building teams of software engineers from zero to hero, helping to recruit employees, outsourcing, leverage the use of headhunters and vendoring.- Leading teams of Android, iOS, and backend engineers, including outsourced and vendors.- Architect, develop, and maintain Alfagift as Alfamart's main consumer facing application.- Reaching 6 millions of app downloads within 3 months of grand launching. More than 10 million app downloads in 1.5 years.- Reaching 8 millions of new registered members with creative digital marketing campaign strategies.- Reaching millions of MAU.- Reaching billions of monthly sales.- Highly concurrent microservices with database per service and domain event pattern.- Leveraging the usage of RDBMS and NoSQL, including in memory key-value database, depending on the specific service to achieve a good efficiency.- CI/CD flow implementations to be able to deploy quickly whenever needed and service independent.- Custom API Gateway with flexible rate limiter and session management.

Kota Tangerang Selatan, Banten, Indonesia

- Building, coaching, mentoring, and leading teams of Android and iOS engineers.- Build multiple Android and iOS Apps for millions of users including internal apps, POS, and KIOSK.- Integrate with 3rd party services.- Conduct, define and enforce code reviews and proper unit tests, code coverage, etc.- Collaborate with designers, product, business, and other engineers within and across team- Define coding standards and development processes- Estimating the effort required to develop and implement- Attend meetings with product and business team- Implements and maintains engineering objectives and initiatives- Design and implement continuous integration / continuous delivery systems for mobile development- Manage day to day engineering tasks for the team- Mentor and guide technical resources in the team- Guide and participate in recruiting best technical talent for the team- Research for better technologies that will contribute to the success of the business

Jakarta, Indonesia

- Develop and maintain enterprise mobile apps- Create trading platform for securities on Android and Android Wear- Liaise with external vendors to acquire and provide technical details- Liaise with technical and non technical owners and project teams- Turns design and user interface mockups into functional Mobile apps- Develop and publish technical and operational support documentation

Greater Jakarta Area, Indonesia

Wellsen is always open as a consultant and contractor for IT projects. He might even do some pro bono work for which projects interests him

Greater Jakarta Area, Indonesia

Opened a self-owned business in voucher reload systems. Build self-hosted voucher reload server systems with 24 hours up time/day, custom configured, self-managed and continuously monitored by myself. Can be administered locally and remotely. Automatic management and disaster recovery systems using custom own made systems