I’m Haikal Fikri Luzain, a software engineer with 5+ years of experience building scalable web applications, backend systems, and cloud-based services across e-commerce, automation, and internal tooling. I enjoy turning complex requirements into reliable, high-performance features, with hands-on experience in API design, Elasticsearch-based search optimization, and serverless architectures. I’m comfortable across Laravel, Node.js, Golang, React, and Vue, and I’ve delivered business-impacting improvements such as optimizing slow queries and data workflows. I thrive in remote collaboration, bring a fast-learning mindset, and love delivering measurable impact with modern tech stacks.

Haikal Fikri Luzain

I’m Haikal Fikri Luzain, a software engineer with 5+ years of experience building scalable web applications, backend systems, and cloud-based services across e-commerce, automation, and internal tooling. I enjoy turning complex requirements into reliable, high-performance features, with hands-on experience in API design, Elasticsearch-based search optimization, and serverless architectures. I’m comfortable across Laravel, Node.js, Golang, React, and Vue, and I’ve delivered business-impacting improvements such as optimizing slow queries and data workflows. I thrive in remote collaboration, bring a fast-learning mindset, and love delivering measurable impact with modern tech stacks.

Available to hire

I’m Haikal Fikri Luzain, a software engineer with 5+ years of experience building scalable web applications, backend systems, and cloud-based services across e-commerce, automation, and internal tooling. I enjoy turning complex requirements into reliable, high-performance features, with hands-on experience in API design, Elasticsearch-based search optimization, and serverless architectures.

I’m comfortable across Laravel, Node.js, Golang, React, and Vue, and I’ve delivered business-impacting improvements such as optimizing slow queries and data workflows. I thrive in remote collaboration, bring a fast-learning mindset, and love delivering measurable impact with modern tech stacks.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

Indonesian
Fluent
English
Advanced

Work Experience

Software Engineer at HireData
December 1, 2023 - Present
Implemented and maintained ATS integrations with Vincere, Otys, and Carerix; designed user invitation and super-admin account switching; built Tasks automation workflows (Find Email, Verify Email, and Search Domain) with Hunter.io; implemented automated company data enrichment using CoreSignal and BrandFetch; created an internal webhook service for event-driven workflows; maintained marketing site with Nuxt.js/Storyblok; built a Loom scraping service with Node.js, PostgreSQL, Redis, and Vercel Functions, significantly reducing scraping failures at high volume and lowering operational costs.
Software Engineer, Backend at XickAvenue
November 1, 2020 - November 30, 2023
Designed, developed, and maintained scalable backend systems for high-traffic e-commerce. Built reusable backend modules with PHP/Lumen and Golang; optimized slow database queries with indexing; developed a high-performance catalog search service using Golang and Elasticsearch; implemented a serverless push notification service using AWS Lambda; maintained internal CQS used by multiple teams; performed Elasticsearch integration testing to ensure data accuracy.
Software Engineer, Fullstack (Freelance) at Gringgo
January 1, 2022 - December 31, 2022
Revamped an internal CQS using React.js and TypeScript; migrated to a modern dashboard template for better UX; fixed backend issues and added new API features using Node.js and Express.js.
Web Software Developer (Freelance) at website.ID
January 1, 2020 - October 31, 2020
Developed core e-commerce features including inventory management, cart, checkout, and order processing; integrated a PayPal-like payment gateway; built using Next.js, React, TypeScript, and MongoDB.
Web Software Developer at amplo
May 1, 2018 - Present
Built and maintained a CPQI migrant worker registration and job placement system; integrated government APIs for identity verification; delivered a medical data web app for CPQI health checks; implemented Haversine-based partner search and Redis caching to improve performance.
Android Rentist
May 1, 2018 - Present
Created a back-office application for internal user management; collaborated with the backend team to access the API.
Software Engineer, Backend (Freelance) at LihAI
November 1, 2023 - December 1, 2023
Implemented scheduled background jobs to resolve subscription expiration issues; fixed OpenAI API response truncation by handling max token limits; improved backend reliability and error handling for AI-powered features; built services using NestJS, TypeScript, Prisma, PostgreSQL, and OpenAI APIs.
Web Software Developer (Freelance) at Amplo
October 1, 2019 - August 1, 2020
Built and maintained a CPQI migrant worker registration and job placement system; integrated government APIs for ID NTP verification; developed a medical data web application; implemented Haversine for nearest medical partners; improved system performance with Redis caching.
iOS Developer at Rentist
May 1, 2018 - January 1, 2019
Created a back-office application for the internal team to maintain registered users; collaborated with the backend to consume APIs; developed using React Native.

Education

Bachelor's Degree at Qercu Buana University
March 1, 2020 - January 1, 2024
Software Engineering at Ikrama Vocational High School
January 11, 2030 - January 20, 2026
Bachelor's Degree in Computer Science at Qercu Buana University
March 1, 2020 - January 1, 2024
Bachelor's Degree at Qercu Buana University
March 1, 2020 - January 1, 2024

Qualifications

Problem Solving (Basic) - HackerRank
January 1, 2022 - January 20, 2026
Go (Basic) - HackerRank
April 1, 2022 - January 20, 2026
SQL (Intermediate) - HackerRank
March 1, 2022 - January 20, 2026
SQL (Basic) - HackerRank
March 1, 2022 - January 20, 2026
JavaScript (Basic) - HackerRank
March 1, 2022 - January 20, 2026
JavaScript (Intermediate) - HackerRank
March 1, 2022 - January 20, 2026
Database Programming with PL/SQL - Oracle
January 1, 2021 - January 20, 2026
Junior Web Programmer - Indonesian Professional Certification Authority
January 1, 2021 - January 20, 2026
Problem Solving (Basic)
January 1, 2022 - January 20, 2026
Go (Basic)
April 1, 2022 - January 20, 2026
SQL (Intermediate)
March 1, 2022 - January 20, 2026
SQL (Basic)
March 1, 2022 - January 20, 2026
JavaScript (Basic)
March 1, 2022 - January 20, 2026
JavaScript (Intermediate)
March 1, 2022 - January 20, 2026
Database Programming with PL/SQL Oracle
January 11, 2030 - January 20, 2026
Certificate of Competence - Junior Web Programmer
January 11, 2030 - January 20, 2026
Problem Solving (Basic)
April 1, 2022 - January 20, 2026
Go (Basic)
April 1, 2022 - January 20, 2026
SQL (Intermediate)
March 1, 2022 - January 20, 2026
SQL (Basic)
March 1, 2022 - January 20, 2026
JavaScript (Basic)
March 1, 2022 - January 20, 2026
JavaScript (Intermediate)
March 1, 2022 - January 20, 2026

Industry Experience

Software & Internet, Retail, Education, Professional Services, Media & Entertainment, Computers & Electronics