Firman Maulana
- contact@kakilangit.dev
- C687 19F3 6C6C 0EF6
- Berlin, Germany
Senior Software Engineer with 15+ years of experience building backend platforms, distributed systems, and production APIs for automotive, e-commerce, food-tech, fintech, and mobile products.
Strong in Rust, Go, Python, Kotlin, and Swift, with hands-on experience across PostgreSQL, MySQL, Redis, Kafka/Nakadi, RabbitMQ, NATS, Docker, Kubernetes, and AWS.
I work best on systems that need clear ownership, pragmatic architecture, reliable delivery, and maintainable code. Open-source contributor and builder of Rust, Zig, Elixir, and Swift projects.
Work Experience
Senior Software Engineer
Content provider and services team for automotive infotainment products. Go, Rust, and Python.
- Develop backend services for Cinemo Core, supporting 24+ media services including Spotify, YouTube Music, and Apple Music for in-car and cloud content delivery.
- Designed and built ARIA, an Adaptive Reality Intelligence Agent that won Best Innovation at Cinemo Hackathon 2025.
Senior Software Engineer
Culinary Tribe. Backend services for product catalogue, menu planning, and recipe planning across multiple HelloFresh brands. Go, Rust, Kotlin, and Python.
- Built and maintained product catalogue capabilities used by HelloFresh, Factor75, Green Chef, EveryPlate, Chef’s Plate, YouFoodz, The PetsTable, and GoodChop.
- Developed services for menu planning and recipe planning, improving how culinary and operational teams manage product data.
Software Engineer
Backend engineer for Zalando Offprice, Zalando Lounge, and Zalando Outlets. Go, microservices, APIs, and internal platforms.
- Built Wühlmaus, an article-steering system for Zalando Outlets merchandise and automated warehouse workflows.
- Developed zPoints, a loyalty initiative for Zalando Outlets.
- Created reporting tools and high-availability APIs for off-price retail operations.
Senior Software Engineer
Led backend and Android engineering for financial and community-commerce products. Python, Django, Go, and Android.
- Led the Python backend team for Arisan Mapan.
- Led Android development for the Mapan app, selected for Google Launchpad Accelerator.
- Refactored core services and migrated parts of the stack from Python/Django to Go.
Mobile & Backend Developer
Built iOS applications and Go backends for travel, books, coffee, games, and utility products. Objective-C, Swift, and Go.
Technical Advisor
Coordinated technical delivery across holding-company projects and built iOS, Android, Python, and PHP systems for internal and client products.
Senior Developer
Built user-generated content platforms, SSO, reputation systems, gamification engines, and social media analytics products.
Lead PHP Developer
Led PHP, Drupal, and BlueERP development for web-based information systems.
PHP Developer
Developed Joomla, Mambo, and Drupal websites for client projects.
Projects
Summoner
Elixir local-first, multi-user, multi-workspace AI agent platform.
ZMLS
Zig implementation of the Messaging Layer Security protocol, RFC 9420.
Nanofish
Rust no_std HTTP client and server for embedded systems.
Leasehund
Rust embedded DHCP server library.
Nulid
Rust nanosecond-precision, lexicographically sortable identifier.
SwiftNATS
Swift client for NATS, the cloud-native messaging system.