Database performance
Finding bottlenecks, reading query plans, and tuning queries and indexes for real production workloads.
LUQMAN INDRA FIRMANSYAH / BACKEND ENGINEER
Behind every
great experience,
a reliable backend.
I’m a Backend Engineer with 6+ years delivering production systems across healthcare, commerce, wellness, and IoT — specializing in Node.js, NestJS, and SQL performance.
Based in Bandung, Indonesia / Node.js · NestJS · TypeScript
BACKEND SYSTEM EXPLORERINTERACTIVE DRAFT
HTTPS · Request verification
API Gateway
Validate incoming requests and establish a trusted entry point.
Illustrative flow · No live API calls
EXPERIENCE6+ years
Building production systems
SELECTED PERFORMANCE IMPACT10s → 300ms
Average transaction-retrieval API response
THE WORK THAT MATTERS
Faster queries.
Safer transactions.
More reliable workflows.
01 / SELECTED WORK
Real systems.
Meaningful contributions.
A selection of the platforms and engineering challenges I’ve worked on.
Healthcare & commerce
2024 — Present
Erha Buddy
Backend services connecting skincare commerce, teleconsultation, appointments, prescriptions, payments, and delivery.
Explore the work →Event-driven healthcare
2022 — 2023
Mitra Keluarga
Hospital microservices supporting appointments, queue monitoring, medical check-ups, promotions, and prescription delivery.
Explore the work →Serverless research
2023
Image Optimization Research
A serverless image-optimization pipeline exploring the tradeoffs between visual fidelity, file size, and delivery performance.
Explore the work →INSIDE THE ENGINEERING / ERHA BUDDY
Less waiting.
More reliable transactions.
Query-plan analysis, index tuning, and database optimization reduced average production transaction-retrieval API response time.
Read the engineering story ↗AVERAGE API RESPONSE TIME
Before
10 s
After
300 ms
97% improvement · Reported production outcome, not a live benchmark.
02 / ENGINEERING FOCUS
What I bring
to the backend.
Practical engineering, grounded in the demands of production.
Transaction integrity
Backend-owned pricing and request verification that protect sensitive transaction flows.
Reliable workflows
Asynchronous processing, concurrency controls, and retries for operations that need to finish reliably.
Connected systems
Integrating customer applications with healthcare, payment, delivery, and internal operational services.
03 / EXPERIENCE
A career built
on delivery.
From connected devices to healthcare transactions, each role has expanded the systems I help build and support.
PT Arya Noble (ERHA Group)
Backend Developer
Backend delivery and production support for Erha Buddy, with a focus on database performance, secure checkout, integrations, and transaction reliability.
Rolling Glory
Backend Developer
Delivered NestJS services and REST APIs for healthcare, wellness, and consumer products, including event-driven hospital integrations.
Habibigarden
Full-Stack Developer
Built dashboards, APIs, and an Android application for remote garden management, with MQTT sensor data and AWS-backed monitoring.
04 / A LITTLE ABOUT ME
Hi, I’m Luqman.
You can call me Alundra.
I’m a Backend Engineer based in Bandung, Indonesia. My work centers on Node.js, NestJS, TypeScript, and SQL performance optimization.
I’ve worked across healthcare, commerce, wellness, and IoT — connecting customer applications to the operational systems behind them, and supporting those systems in production.
EDUCATIONUniversitas PadjadjaranBachelor’s Degree · 2017–2022
ALSO IN MY TOOLKITAWS · Docker · New RelicGo · Laravel · MQTT · InfluxDB
05 / LET’S CONNECT
Good systems start
with a conversation.
Have a backend engineering opportunity or a technical challenge to discuss? I’d love to hear about it.
alundra.firmansyah@gmail.com ↗