Darmawan Zulkifli
Professional Summary
Senior full-stack software engineer with 9+ years shipping production systems end to end — Go and Node.js backends through React, Next.js and TypeScript front ends, on PostgreSQL and MongoDB. Ships web and mobile from a single Flutter codebase, owns products from planning through release, and has led a delivery team. Delivered for international clients across Singapore, Australia and Europe; architected a blockchain platform on Algorand.
Work Experience
- Currently integrating Aptus Aware with Aptus Concierge, including its AI integration.
- Implement features, fixes and backend services for the Aptus Aware mobile app.
- Built a proof-of-concept on Matrix.org and reviewed and migrated backend code onto it.
- Extended location-aware features: automatic presence, hunt-group routing and nurse-call configuration.
- Own release hygiene end to end — version control, testing to standard, releases, and issue tracking.
- Developed and managed the Algorai Admin platform, ensuring robust functionality and user-friendly interfaces.
- Integrated Algorai with the Algorand blockchain using the official SDK.
- Built decentralised applications on Algorand — React front ends over smart-contract backends — enabling on-chain trading and asset management.
- Implemented trading: DEX integrations, order matching, limit and market orders, and liquidity pools using Algorand atomic transfers.
- Developed cross-chain bridges and integrations (Ethereum, Solana, Polygon) so users could swap assets across networks while minimising slippage.
- Designed secure wallet connections (Pera Wallet, MyAlgo) for transaction signing, staking and real-time trading.
- Optimised for high-frequency trading — oracle price feeds, transaction batching, and reduced confirmation times.
- Spearheaded project planning and estimation, effectively catering to a predominantly European clientele.
- Engineered robust systems tailored to client specifications using Flutter for cross-platform delivery (web, Android, iOS).
- Developed high-performance backend services leveraging Golang and Node.js.
- Deployed and maintained the DHIS2 health information system with HISP Indonesia.
- Optimised queries for external processes and maintained database performance.
- Led product maintenance and the delivery of innovative features.
- Engaged with clients for strategic feature planning and accurate estimation.
- Oversaw application releases and deployment to staging/production environments.
Earlier: Software Engineer, PT Citra Digital Lintas (Mar 2019 – May 2020); Software Engineer, Lumbung Inovasi (Jan 2018 – Mar 2019); Fullstack Developer, Sol Interactive (Jun 2017 – Aug 2018)
Selected Projects
Clinical communications for care teams — nurse call, presence and hunt-group routing on staff mobiles.
An on-chain finance platform on Algorand — bringing structured financial products to retail, not just institutions.
A community-driven decentralised exchange for the Aptos ecosystem, powered by a self-optimising ve(3,3) model.
Open Source
beacon_broadcast (Dart, fork) · ws-wrapper (Go) · toldata (Go, fork) · xlsx_utilities (Go) · matrix-dart-sdk (Dart, fork) · jspdf-generator (TypeScript)
github.com/darmawan01
Skills
Languages: Go, Rust, TypeScript, Dart, JavaScript, SQL
Backend: gRPC, Protobuf, Kafka, NATS, RabbitMQ, Matrix.org, REST
Frontend: React, Next.js, Flutter, React Native, Astro, Tailwind
Data: PostgreSQL, MongoDB, Redis, Firestore
Platform: Docker, Kubernetes, Linux, Bash, GCP, AWS
Chains: Algorand, Aptos, Story Protocol
AI: LLM integration, Voice agents, On-prem inference
Embedded: ESP32, Microcontrollers
Education
Kotlin for Android — Beginner to Advanced
Generated 2026.09.10 from the same records as the designed CV.