Summary
Overview
Work History
Education
Skills
Timeline
Hi, I’m

Khairunnisa

Software Engineer
Banten
Khairunnisa

Summary

Experienced Software Engineer with a strong background in backend and full-stack development. Over a decade of expertise in fintech, e-commerce, and banking industries. Skilled in Java Spring Boot, PostgreSQL, and Node.js to drive system scalability and enhance user experience. Proven ability to lead cross-functional teams in delivering innovative solutions and solving complex projects within tight deadlines. Committed to continuous learning to stay ahead in the ever-evolving tech landscape.

Overview

10
years of professional experience
2
Languages

Work History

Mandrill Tech Sdn, Bhd. | Project MoneyX

Backend Engineer - Java
06.2024 - 05.2025

Job overview

  • Developed backend modules for a Lead Management System handling ~10K+ monthly submissions across 3 sectors.
  • Created real-time Admin Dashboard APIs, increasing operational data accuracy by 35%.
  • Helped streamline approval workflows, reducing decision cycle time from 3 days to under 24 hours.
  • Optimized PostgreSQL queries using JPA, improving database read speed by 28%

AMK Technology Sdn Bhd – Maybank

Software Developer - Java
06.2023 - 12.2023

Job overview

  • Developed highly concurrent services for Remittance Portal supporting 1,200 TPM with sub-150ms P95 latency.
  • Configured Kafka consumers with back-pressure handling and idempotent message delivery.
  • Reduced message processing delay by 50ms via Kafka tuning and prefetching.
  • Achieved 99.97% system uptime through circuit breaker integration using Resilience4j and fallback caching via Redis.

PT. Infosys Solusi Terpadu | CIMB Niaga | BTN

Backend Engineer
07.2022 - 06.2023

Job overview

  • Reduced average API latency by 15% for CIMB Niaga’s product services used by over 200K app users.
  • Built Octo Mobile’s dashboard config platform, increasing settings-related feature usage by 18%.
  • Delivered loan calculator features for BTN’s mobile app, boosting application form completion by 25%

Moladin Digital Indonesia

Software Engineer II - Backend
10.2022 - 03.2023

Job overview

  • Built a performance-based incentive engine, increasing active salesperson engagement by 22%.
  • Developed monitoring tools that decreased sales KPI reporting lag by 40%.
  • Optimized internal services, cutting API response time from 500ms to 360ms on average.

PT Bank Mandiri Tbk

Back End Engineer
01.2022 - 06.2022

Job overview

  • Developed Sarinah Trading House, APIs handling over 10,000 concurrent requests with 99.9% success rate during load testing.
  • Created bulk-upload product catalog tool, decreasing merchant onboarding time by 52%.
  • Implemented OAuth-secured login integrated with enterprise SSO, reducing support tickets by 30%.

Bank BTPN Tbk | JOFIS & Jenius

Full Stack Engineer
01.2019 - 12.2021

Job overview

  • Developed SLIK Credit Checking API, reducing credit evaluation time by 60%.
  • Automated financial report generation for 500+ SME clients, improving report turnaround time by 70%.
  • Improved PDF/Excel reporting engine by batching DB calls, leading to 3× faster generation.
  • Led backend overhaul of seller dashboard of Jenius, boosting active user rate by 17%.


Mitra Integrasi Informatika | BNI

Software Engineer
05.2018 - 12.2018

Job overview

  • Developed approval workflow engine with multistep verification using Spring State Machine.
  • Optimized SQL batch operations from 12 minutes to under 5 minutes via query tuning and indexing.
  • Implemented GCP-deployed services with autoscaling based on load metrics.

PT FUSI SOLUSI TRANSFORMASI

Backend Engineer
01.2017 - 04.2018

Job overview

  • Developed sensor triggered alert service for mining safety platform using REST + WebSocket.
  • Improved system uptime from 92% to 96.5% via retry strategies and resilient error handling.

Protalenta Insan Prima

Junior Programmer Trainer
09.2016 - 01.2017

Job overview

  • Conducted daily hands-on training for 10+ junior developers, focusing on Java fundamentals, HTML/CSS, and basic database operations.
  • Supervised real-world group projects using Agile methodologies, resulting in 90% project completion within sprint deadlines.
  • Evaluated coding standards and mentored trainees to improve logic structuring and debugging efficiency.

PT. Infomedia Nusantara

Software Engineer
09.2015 - 09.2016

Job overview

  • Designed and implemented scalable RESTful services for internal apps, reducing internal workflow bottlenecks by 35%.
  • Collaborated on the testing and deployment of financial reporting systems with user concurrency >500.
  • Improved existing regression testing processes by integrating automated test cases, reducing test cycles by 40%.

Education

Telkom University, School of Engineering
Bandung, Indonesia

Bachelor of Engineering from Computer Engineering
04.2001

Skills

Spring Boot

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Timeline

Backend Engineer - Java

Mandrill Tech Sdn, Bhd. | Project MoneyX
06.2024 - 05.2025

Software Developer - Java

AMK Technology Sdn Bhd – Maybank
06.2023 - 12.2023

Software Engineer II - Backend

Moladin Digital Indonesia
10.2022 - 03.2023

Backend Engineer

PT. Infosys Solusi Terpadu | CIMB Niaga | BTN
07.2022 - 06.2023

Back End Engineer

PT Bank Mandiri Tbk
01.2022 - 06.2022

Full Stack Engineer

Bank BTPN Tbk | JOFIS & Jenius
01.2019 - 12.2021

Software Engineer

Mitra Integrasi Informatika | BNI
05.2018 - 12.2018

Backend Engineer

PT FUSI SOLUSI TRANSFORMASI
01.2017 - 04.2018

Junior Programmer Trainer

Protalenta Insan Prima
09.2016 - 01.2017

Software Engineer

PT. Infomedia Nusantara
09.2015 - 09.2016

Telkom University, School of Engineering

Bachelor of Engineering from Computer Engineering
04.2001

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Khairunnisa Software Engineer