Hey, I'm Ali Sunjaya Senior Software Engineer
Experience
Ioizz is a personal project focused on exploring end-to-end mobile development and building a cross-platform Chinese language learning application.
- Developed a cross-platform application for learning Chinese characters through interactive stroke-order practice.
- Built backend services and APIs using Go.
- Implemented application observability with Grafana, Prometheus, Loki, and Datadog.
- Managed infrastructure and deployment using Terraform.
Jaya Agung Teknologi is a digital application vendor focused on the gaming sector. As a Backend Engineer, I worked on backend services and third-party integrations supporting the company's gaming applications.
- Integrated five external providers that collectively contributed approximately 50% of company revenue, equivalent to around IDR 36 billion.
Clarus Innovate Teknologi provides end-to-end enterprise solutions across data center and cloud infrastructure, digital platforms, managed services, and consulting. As a Full Stack Engineer, I worked on an insurance brokerage platform, focusing on application development, API integration, CI automation, and system monitoring.
- Completed the batch processing module for an insurance brokerage platform.
- Developed APIs using API Platform to enable integration with external insurance providers, with Swagger documentation.
- Established a CI pipeline with GitLab Runner to automate unit testing, static analysis, and linting.
- Implemented application and server monitoring using Grafana.
Fazz Financial provides financial services for micro and small businesses, offering accessible payment solutions, wholesale purchases, and business financing. As a Backend Engineer, I worked on payment systems, microservices, internal platforms, fraud prevention, and system observability across the company’s applications.
- Migrated and restructured the legacy coupon system from Node.js monolith to a reusable Go microservice.
- Built an internal SSO-like authentication and role-management system for multiple applications.
- Integrated OneKlik BCA as a new payment method for the Fazz Agen application.
- Implemented application and business monitoring with Prometheus and Grafana, tracking requests, error rates, latency, and key business metrics.
- Migrated the cashback module from monolith to Go microservice, later transitioning it to Ruby on Rails with SNS/SQS.
- Developed Fazz Level, a gamification feature designed to encourage continued user transactions.
- Integrated DataVisor for device risk scoring to support fraud prevention and reduce account-takeover risks.
- Implemented Datadog monitoring using structured logs to improve system reliability, SLA visibility, and business metric tracking.
Futuready is an OJK-licensed insurance broker and one of Indonesia’s early online insurance platforms. As a Backend Engineer, I worked on internal applications, partner integrations, and the development of a new serverless core system.
- Developed an internal attendance system that automated employee absence data processing for the HR team.
- Restructured the UI of internal applications to improve usability and consistency.
- Developed APIs for e-commerce partners such as RupaRupa and OLX to expand sales channels.
- Developed microservices for a new core insurance system using Node.js and a serverless architecture.
Sqiva is an IT solutions company focused on web-based reservation and ticketing systems for transportation companies. As a Software Engineer, I worked across backend development, B2B and B2C platforms, infrastructure, and application maintenance.
- Developed a billing system that automated invoice generation by collecting and calculating transaction data based on finance team inputs.
- Developed an internal ticketing system to manage client requests, support issues, and developer task assignments.
- Developed a Global Distribution System (GDS) that aggregated ticket availability from transportation providers such as Kereta Api Indonesia, Sriwijaya Air, and Citilink, enabling B2B partners to search and book tickets.
- Developed APIs for B2B partners such as JD.ID and Panorama to integrate with the ticketing platform.
- Developed an Internet Booking Engine (IBE) that enabled clients to provide their own B2C booking applications and expand their sales channels.
- Set up and maintained CentOS servers, including application deployment, configuration, and backup planning for applications and databases.
- Created reusable project templates covering database connections, backend and frontend structure, and security practices to accelerate new project setup.
- Maintained and improved existing applications through security enhancements, server monitoring, query optimization, and overall system quality improvements.