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Dandy Firmansyah

@dandyfirmansyah

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Backend engineer at Batumbu who modernized loan systems and migrated messaging to GCP Pub/Sub.

Indonesia

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At Batumbu, I co-architected a unified Golang monorepo and overhauled the LMS to establish a Single Source of Truth. I also migrated async messaging from RabbitMQ to GCP Pub/Sub and redesigned interest and late-fee calculations to eliminate redundant batch processing.

At Flip, I partnered with Staff Engineers to build a Golang microservice that decoupled digital products from a legacy PHP monolith, and optimized international transfer calculations with Redis caching. Earlier, I led initial backend architecture for Meratus Group’s SuperApp and developed logistics, enterprise, and customs applications.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer Backend

Current

Batumbu

Nov 2024 - Present (1 year 11 months)

- Go Monorepo & Architecture: Co-architected the transition from multi-repo to a unified Golang Monorepo with Tech Lead; built shared internal packages (common utils, HTTP clients, middleware) to eliminate redundant code and boost developer velocity.
- Domain Architecture & SSOT: Spearheaded core LMS system overhaul to enforce a Single Source of Truth (SSOT); refactored cross-domain SQL joins into

Full Stack Developer / Tech Lead

Meratus Group

Feb 2024 - Nov 2024 (9 months)

- 0-to-1 System Architecture: Led the technical design and initial development of the flagship enterprise SuperApp, establishing end-to-end backend architecture using .NET Core, Vue.js, MongoDB, and GCP to centralize logistics services and order booking.
- Technical Leadership & Governance: Acted as Tech Lead across a team of 5 engineers (Fullstack & Mobile); authored initial Technical Design Do

Software Engineer (Backend)

Flip

Oct 2021 - Jan 2024 (2 years 3 months)

- Rapid Career Progression: Earned promotion to Mid-Level Backend Engineer within 6 months based on exceptional feature delivery, technical ownership, and rapid adoption of engineering standards.
- Monolith Decomposition & Microservices: Partnered with Staff Engineers to initiate and build a dedicated Golang microservice from scratch for the Digital Products domain, successfully decoupling high-

Full Stack Engineer

MGG Software LTD.

Oct 2020 - Oct 2021 (1 year)

- Real-Time Logistics Applications: Designed and engineered messaging and shipment tracking applications for enterprise logistics clients, enabling real-time communication via WebSocket technology.
- Full-Stack Development: Built scalable backend services using Node.js and MongoDB alongside reactive frontend dashboards using Vue.js.
- DevOps & Delivery: Managed containerized application deploy

Analyst Programmer

PT EDI Indonesia

Dec 2018 - Oct 2020 (1 year 10 months)

- Enterprise & Customs Applications: Developed and maintained core business applications and government customs-related software across multiple enterprise clients.
- Operational Process Automation: Automated complex manual business processes, significantly improving operational efficiency and data accuracy.
- Reporting & Multi-Database Systems: Built executive reporting dashboards and managed