Hi, I'm

AKBAR KURNIA
HERNADI

Middle Backend Java Developer

Building Scalable Systems for Banking & Fintech

3+ years building high-performance backend systems for Bank Negara Indonesia, Pegadaian, and fintech startups. Specialized in microservices, API integration, and performance optimization. Currently mentoring 2 junior developers.

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Akbar Kurnia Hernadi - Backend Java Developer

About Me

Middle Backend Engineer with 3 years of experience specializing in Java Spring Boot for banking and fintech applications. Currently contributing to core backend systems at Bank Negara Indonesia (BNI), where I've delivered critical lending features and reduced API latency by 35% for 50,000+ daily users.

My expertise spans building scalable microservices using Kafka, Redis, and REST APIs, with hands-on experience in DevOps tools like Docker, OpenShift, and CI/CD pipelines. I'm passionate about clean code, system design, and mentoring junior developers.

Key Strengths:

  • •Microservices Architecture & System Design
  • •Performance Optimization & Scalability
  • •API Integration & Gateway Management
  • •Agile Collaboration & Code Review
  • •Team Mentoring & Knowledge Sharing

Beyond coding, I've built domain expertise in banking, insurance, and digital payments— ensuring technical solutions align with business needs and regulatory requirements.

Work Experience

Backend Developer

PT. Swadharma Duta Data (Bank Negara Indonesia)

  • •Built core lending features (credit card, installments, limit changes)
  • •Reduced API latency by 35% serving 50K+ daily users
  • •Integrated Kafka for real-time streaming
  • •Mentoring 2 junior developers
Java 17Spring BootWebFluxOracleDBKafkaRedis

Middleware Engineer

PT. Pegadaian (Persero)

  • •Designed insurance integration for 7+ providers
  • •Improved claim validation time by 60%
  • •Managed API governance using webMethods & 3scale
JavaSpring BootwebMethodsElasticSearchOpenShift

Backend Developer

PT. Ventura Koin Nusantara (Fintech)

  • •Built payment & withdrawal systems from scratch
  • •Integrated Xendit & Durianpay APIs
  • •Reduced transaction failure rate by 25%
JavaSpring BootPostgreSQLREST API

Fullstack Engineer

PT. Altech Omega Andalan

  • •Developed ERP modules for SMEs
  • •Automated finance & inventory workflows
  • •Reduced manual workload by 40%
Node.jsReactMongoDBGraphQL

Social Media Officer

Halo BCA (PT. Bank Central Asia)

  • •Provided front-line customer support
  • •Improved response time and CSAT scores
  • •Built foundational understanding of banking customer experience

Featured Projects

Core Banking Lending Features

BNI Lending System

Built critical banking features including credit card activation, installment conversion, credit limit adjustments, and loyalty points system for Indonesia's largest state-owned bank.

Key Achievements:

  • ✓Boosted delivery efficiency by 25% through microservices architecture
  • ✓Reduced API latency by 35% via reactive WebFlux migration
  • ✓Improved incident response time by 40% with Kafka + Kibana monitoring
  • ✓Serving 50,000+ daily active users
Java 17Spring BootWebFluxOracleDBKafkaRedisREST APIOpenShiftJenkinsKibanaGit

Multi-Provider Insurance API Gateway

Insurance Integration Platform

Designed and implemented host-to-host insurance integrations for 7+ providers (Askrida Syariah, Takaful, Jamkrindo) using enterprise API management solutions.

Key Achievements:

  • ✓Improved claim validation time by 60% through real-time data exchange
  • ✓Reduced manual intervention with automated workflows
  • ✓Centralized operational monitoring using ElasticSearch + Kibana
  • ✓Implemented API governance, rate limiting, and OAuth2 authentication
JavaSpring BootwebMethods3scale API GatewayElasticSearchPostgreSQLOpenShiftREST APIGit

Payment & Withdrawal System

Digital Payment Gateway

Built payment and withdrawal systems from scratch for fintech startup, integrating with Xendit and Durianpay third-party payment APIs.

Key Achievements:

  • ✓Reduced transaction failure rate by 25% with enhanced error handling
  • ✓Implemented secure transaction flows for 1,000+ active users
  • ✓Built retry mechanisms and idempotency for payment reliability
  • ✓Integrated multiple payment methods (bank transfer, e-wallet, virtual account)
JavaSpring BootPostgreSQLXendit APIDurianpay APIREST APIGit

Tech Stack

Languages & Frameworks

Java 17JavaScriptSpring BootSpring CloudSpring SecurityWebFluxNode.jsExpress.js

Databases & Caching

OracleDBPostgreSQLMongoDBRedisElasticSearch

Messaging & Streaming

Apache KafkaRabbitMQ

Middleware & API Management

webMethods3scale Gateway

DevOps & Tools

DockerOpenShiftKubernetesJenkinsGitCI/CD PipelineKibanaGrafana

Concepts & Practices

Microservices ArchitectureRESTful API DesignSystem Design & ScalabilityReactive ProgrammingOAuth2 & API SecurityAgile/Scrum MethodologyCode Review & Mentoring

Education

Bachelor of Informatics Engineering

Universitas Amikom Yogyakarta | 2014 - 2018

Specialization: Computer Networking

Thesis: Building Community-Based Wi-Fi Hotspot Network (RT/RW Net) as Affordable Internet Solution

Certifications & Training

Fullstack JavaScript Bootcamp

Hacktiv8

The Basics of Scrum

Project Management Institute

Certified

Basics of Disciplined Agile

Project Management Institute

Certified

Let's Connect

I'm currently open to new opportunities and collaborations.
Feel free to reach out!

akhernadi@gmail.com
LinkedIn
GitHub
+62 821-3869-0989
Central Jakarta, Indonesia