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.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Language
Indonesian
Fluent
English
Advanced
Work Experience
Software Engineer at HireData
December 1, 2023 - PresentImplemented 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, 2023Designed, 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, 2022Revamped 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, 2020Developed 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 - PresentBuilt 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 - PresentCreated 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, 2023Implemented 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, 2020Built 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, 2019Created 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, 2024Software Engineering at Ikrama Vocational High School
January 11, 2030 - January 20, 2026Bachelor's Degree in Computer Science at Qercu Buana University
March 1, 2020 - January 1, 2024Bachelor's Degree at Qercu Buana University
March 1, 2020 - January 1, 2024Qualifications
Problem Solving (Basic) - HackerRank
January 1, 2022 - January 20, 2026Go (Basic) - HackerRank
April 1, 2022 - January 20, 2026SQL (Intermediate) - HackerRank
March 1, 2022 - January 20, 2026SQL (Basic) - HackerRank
March 1, 2022 - January 20, 2026JavaScript (Basic) - HackerRank
March 1, 2022 - January 20, 2026JavaScript (Intermediate) - HackerRank
March 1, 2022 - January 20, 2026Database Programming with PL/SQL - Oracle
January 1, 2021 - January 20, 2026Junior Web Programmer - Indonesian Professional Certification Authority
January 1, 2021 - January 20, 2026Problem Solving (Basic)
January 1, 2022 - January 20, 2026Go (Basic)
April 1, 2022 - January 20, 2026SQL (Intermediate)
March 1, 2022 - January 20, 2026SQL (Basic)
March 1, 2022 - January 20, 2026JavaScript (Basic)
March 1, 2022 - January 20, 2026JavaScript (Intermediate)
March 1, 2022 - January 20, 2026Database Programming with PL/SQL Oracle
January 11, 2030 - January 20, 2026Certificate of Competence - Junior Web Programmer
January 11, 2030 - January 20, 2026Problem Solving (Basic)
April 1, 2022 - January 20, 2026Go (Basic)
April 1, 2022 - January 20, 2026SQL (Intermediate)
March 1, 2022 - January 20, 2026SQL (Basic)
March 1, 2022 - January 20, 2026JavaScript (Basic)
March 1, 2022 - January 20, 2026JavaScript (Intermediate)
March 1, 2022 - January 20, 2026Industry Experience
Software & Internet, Retail, Education, Professional Services, Media & Entertainment, Computers & Electronics
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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