Looking for a job

khalid ahmad

@khalidahmad

Message

Full Stack Engineer at PT. Hubexo, where I built NBS LCA and cut NBS Source search response time to under one second.

Indonesia

Message

What I'm looking for

Senior backend or full-stack role, remote from Depok (GMT+7) or hybrid in Jakarta/Depok/Bandung. Five years shipping with UK and Australian teams across a 6-7 hour gap, so I work best in async-first teams with clear ownership and good written communication. Most interested in domain-heavy products: construction tech, sustainability/carbon data, fintech, or public sector.

At PT. Hubexo, I built and maintained GraphQL and REST services across five construction-technology platforms. I optimized Elasticsearch queries and PostgreSQL access patterns on NBS Source, reducing search response time from roughly three seconds to under one.

I led the backend build for NBS LCA, a low-carbon materials specification product, using NestJS, PostgreSQL, Elasticsearch, and AWS Athena. I also built data ingestion pipelines that bring ECO Platform EPD records and ICE embodied-carbon data into product listings.

As a concurrent Backend Engineer (Contract) at Silancar, I designed and built the backend architecture for a police patrol management platform, including event-driven reporting over Kafka and centralized identity with Keycloak. It is running as a live pilot with an Indonesian police unit.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer (Contract)

Current

Silancar

Jun 2024 - Present (2 years 4 months)

Designed and built the backend architecture from scratch, including event-driven patrol reporting over Kafka and centralised identity via Keycloak. Currently running as a live pilot with an Indonesian police unit.

NestJS PostgreSQL Kafka Keycloak Elasticsearch Minio Docker Jenkins Portainer

Current

Full Stack Engineer

Current

PT. Hubexo

Oct 2021 - Present (5 years)

Built and maintained GraphQL and REST services across five production platforms, working directly with UK-based product teams. Optimised Elasticsearch queries and PostgreSQL access patterns, cutting search response time from roughly 3 seconds to under 1 second.

.NET 8+NestJS NodeJS LoopBack React Angular GraphQL PostgreSQL Oracle Elasticsearch AWS CodeIgniter

Full Stack Developer

PT. Indocyber Global Teknologi

Apr 2020 - Oct 2021 (1 year 6 months)

Built electronic policy document and transaction statement systems for insurance operations, replacing manual document distribution. Implemented automated email and SMS notification workflows with fallback delivery.

ASP.NET SQL Server SSIS Crystal Reports

Full Stack Developer

PT. Berlian Sistem Informasi

Dec 2018 - Mar 2020 (1 year 3 months)

Built internal enterprise systems and workflow automation for Mitsubishi group operations. Translated requirements from non-technical stakeholders into workflow designs, through to production support.

ASP.NET SQL Server SharePoint K2 Blackpearl

Full Stack Developer

PT. Satu Solusi Indotama

Sep 2016 - Dec 2018 (2 years 3 months)

Built the Bank Mandiri public auction platform, a live bidding system for Indonesia's largest bank by assets. Delivered a warehouse management system and a call centre system for enterprise clients.

ASP.NET MVC SQL Server Kendo UI