# Christian Hadidjaja

> Software Engineer

Location: San Francisco, California, United States
Profile: https://flows.cv/christianhadidjaja

Experienced software engineer with a demonstrated history of working in the computer software industry.

## Work Experience
### Principal Software Engineer @ SuperDial
Jan 2022 – Present
- Implement integrations with various speech, AI, and telephony APIs to build an automated phone bot.
- Architect invoice factoring process. Implement and manage integrations with payment and money movement APIs.
- Implement and manage integrations with health insurance APIs.
- Implement and manage customer facing APIs.

### Staff Software Engineer, Lead @ TripActions
Jan 2017 – Jan 2022 | Palo Alto, California
Server side. Java/Spring/MySQL. API integrations. Lead cross-team projects.
- Join at Series A.
- Integrate with Flight and Hotel providers to search availability, submit, and manage bookings on TripActions Travel.
- Integrate with financial systems in TripActions Liquid.
- Collaborate with PM, client dev, and QA to design, estimate, and implement high quality features.

### Staff Software Engineer, Lead @ AppDirect
Jan 2012 – Jan 2015 | San Francisco
Deliver high quality code. Lead a high intensity, high pressure team.
Technologies: Java, Spring, Hibernate, MySQL, REST, SOAP.
- Join at Series A.
- Integrate AppDirect with enterprise systems of the biggest brands in telecom. Connecting software vendors and telecom systems together with AppDirect as a hub, allowing users and transactions provisioning from one system to another. 
- Connect multiple billing systems and payment gateways to AppDirect marketplaces, allowing payments with enterprise billing account or customer credit cards.
- Create new APIs for both internal and marketplace partner usage.
- Carry simultaneous projects on schedule to close new deals and meet contract agreements.
- Mentor new engineers to our systems and technologies.
- Introduce new data models to capture vendors billing structures. eg. one time charge, recurring charges,  discounts, taxes calculations.
- Work closely with project managers and communicate with clients’ managers, engineers, and accountants to ensure requirements accuracy and timely delivery.

### Senior Software Engineer @ Rearden Commerce
Jan 2008 – Jan 2012 | San Francisco Bay Area
Contribute in full software development life cycle from requirement analysis, design, development to support and maintenance. 
- Implement end-to-end from database, business logic, to front-end. Technologies: Java, Oracle, SQL, Hibernate, Spring, XML, XHTML, CSS, DOM, JavaScript.
- Build applications with models and infrastructure that allow the end user product to be customized at multiple levels, from global scope to per user level.
- Bring small-to-medium-sized business (SMB) product to launch, empowering business owners to customize the employee's spending policies.
- Design and develop configuration models and APIs to support Travel, Mobile, and Profile teams with their requirements.
- Lead / co-lead multiple projects, ensuring deliveries and being the point-of-contact on design discussions and technical problems.
- Work closely with Product Managers to understand feature requirements, identify dependencies, and propose solutions on potential problems.
- Engage directly with QA on identifying bugs and resolving environment issues.
- Write scripts and tools to help internal tasks: detect component dependencies, remove unused widgets/files/dependencies, batch processes.


## Education
### BS in Computer Engineering and Computer Science
University of Wisconsin-Madison


## Contact & Social
- LinkedIn: https://linkedin.com/in/christianhadidjaja

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Source: https://flows.cv/christianhadidjaja
JSON Resume: https://flows.cv/christianhadidjaja/resume.json
Last updated: 2026-04-12