Viko Andri Bastian Manurung — Fullstack Software Engineer & DevSecOps Engineer

available for senior roles

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Viko Andri Bastian Manurung

Fullstack Software Engineer · DevSecOps Engineer

Jakarta, ID · 8+ years · banking / fintech

cat about.md

Senior fullstack engineer with DevSecOps strength.

Building secure, reliable software for banking,

fintech, payments, and enterprise platforms.

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// About

Engineering software that matters

I am a Fullstack Software Engineer and DevSecOps Engineer with over 8 years of professional experience building and operating software in the banking, fintech, payment, and enterprise sectors.

My work spans the full software lifecycle — from writing backend microservices and frontend dashboards to configuring CI/CD pipelines, managing infrastructure, and supporting vulnerability remediation across production environments.

At PT Bank Mandiri, one of Indonesia's largest state-owned banks, I have contributed to mission-critical systems including dispute management, national clearing (SKN), RTGS, telegraphic transfer, tax collection, and ATM/CRM monitoring platforms.

I work with engineering discipline — feature branch isolation, code review, automated builds, dependency audits, penetration testing support, and reproducible deployments across DC and DRC environments.

See my work Core expertise

Years of Experience

Companies

Projects Delivered

Tech Domains

Main positioning

Senior Fullstack Software Engineer with DevSecOps strength for banking, fintech, payments, and secure enterprise platforms.

// Core Expertise

Skills & Technologies

A breadth of skills across the full engineering stack, from backend services to infrastructure and security.

Backend Engineering

Server-side systems, APIs, and business logic

JavaSpring BootJava Struts 1Java Struts 2Go / GolangPHP LaravelREST APIMicroservicesFlowable BPMNPayment Gateway IntegrationCore Banking Systems

Frontend Engineering

User interfaces, dashboards, and browser-side applications

React.jsAngularJSJavaScriptTypeScriptJSPHTML5CSS3SASSResponsive DesignEnterprise Dashboards

Database Engineering

Relational databases, query optimization, and data modeling

Oracle SQLMySQLSQL ServerHQL

DevSecOps & Infrastructure

CI/CD pipelines, cloud, containerization, and deployment

JenkinsDockerLinux / RHELNginxGoogle Cloud PlatformMandiri Private CloudcPanelCloudflareShell ScriptingDC / DRC DeploymentProduction Readiness

Observability, Security & Quality

Monitoring, security hardening, and engineering quality

ELK StackSystem MonitoringGoogle AnalyticsPenetration Testing SupportPerformance Testing SupportVulnerability AssessmentVulnerability RemediationRed Hat Single Sign-On

// Experience

Work History

Software Engineer

PT Bank Mandiri (Persero) Tbk

July 2020 – Present

West Jakarta

Developing, supporting, deploying, and maintaining banking applications across dispute management, SKN Incoming Debet, WAPU tax collection, ATM/CRM monitoring, TPS Adapter, Telegraphic Transfer, and RTGS systems.

▸Built and maintained enterprise banking applications across multiple core banking domains
▸Delivered fullstack features across Spring Boot backends and React.js / AngularJS frontends
▸Collaborated with security teams on penetration testing findings and vulnerability remediation
▸Managed CI/CD workflows using Jenkins across DC and DRC environments
▸Supported production readiness checks and deployment across private cloud infrastructure

Software and DevOps Engineer

Kita KitchenPart-time

May 2020 – Dec 2020

Remote

Built backend middleware, tenant management functionality, cloud infrastructure, Nginx reverse proxy configuration, and deployment pipelines for Go and Laravel applications on GCP.

▸Built middleware gateway API using Go
▸Built tenant management dashboard using PHP Laravel
▸Provisioned and configured GCP infrastructure
▸Configured Nginx reverse proxy for production environments
▸Automated deployment pipelines for Go and Laravel applications

Backend Developer

PT Digital Artha Media

Oct 2017 – June 2020

South Jakarta

Developed and maintained payment, digital wallet, internet payment gateway, and POS applications using Java Struts 2 and Java Spring.

▸Developed payment and digital wallet applications using Java Spring
▸Built and integrated internet payment gateway for LinkAja digital wallet platform
▸Maintained Point of Sale (POS) application
▸Used Java Struts 2 and Spring Framework for backend services
▸Integrated REST APIs for digital wallet payment flows

Selected projects from banking, fintech, payments, and enterprise software delivery.

E-channel banking · ATM/CRM operations · Monitoring · Reporting

E-Channel Go — ATM & CRM Monitoring and Reporting Platform

2024–2025

Fullstack Engineer / DevOps Support / Security Remediation Support

▸Built backend services using Spring Boot
▸Built frontend dashboard functionality using React.js
▸Integrated SQL Server for reporting and operational data
▸Supported CI/CD deployment using Jenkins
▸Prepared production readiness and deployment in DC and DRC environments
▸Collaborated with security teams to remediate penetration testing findings

Spring BootReact.jsSQL ServerJenkinsMandiri Private Cloud

NDA · details available on request

Banking · National clearing · Tax collection · Secure access

ORP — SKN Incoming Debet & WAPU Tax Collection Platform

2025

Fullstack / Backend / DevOps Engineer

▸Developed Spring Boot microservices for national clearing and tax collection
▸Built React.js operational modules for banking users
▸Integrated Oracle SQL for transactional data
▸Integrated Red Hat Single Sign-On (RH-SSO) for secure access management
▸Supported Jenkins deployment workflows

Spring BootMicroservicesReact.jsOracle SQLRed Hat SSOJenkins

NDA · details available on request

Banking · Transaction dispute · Workflow automation

Enterprise Banking Dispute Management System

2025–present

Fullstack / Backend / DevOps Engineer

▸Developed dispute resolution module for banking transactions
▸Used Flowable BPMN for transaction discrepancy workflow automation
▸Built backend services with Spring Boot microservices
▸Built frontend features with AngularJS
▸Supported Jenkins-based CI/CD delivery pipeline

Spring BootMicroservicesAngularJSOracle SQLFlowable BPMNJenkins

NDA · details available on request

Core banking · International remittance · High-value domestic payment

Core Banking — Telegraphic Transfer & RTGS Services

2022–2024

Software Engineer / Maintenance Engineer

▸Maintained Incoming and Outgoing Telegraphic Transfer services
▸Maintained RTGS (Real-Time Gross Settlement) services
▸Collaborated with Solution Analysts to resolve production and development issues
▸Managed deployment and database setup for cluster modules
▸Supported penetration testing and performance testing before production release

Java Struts 1JSPJavaScriptOracleWebSphereAngularJSOPF Framework

NDA · details available on request

Restaurant operations · Tenant management · Cloud deployment

Kita Kitchen — Restaurant Website & Tenant Management Dashboard

2020

Fullstack Engineer / DevOps Engineer

▸Built middleware gateway API using Go
▸Built tenant management dashboard using PHP Laravel
▸Integrated MySQL for data persistence
▸Provisioned and configured Google Cloud Platform infrastructure
▸Configured Nginx reverse proxy
▸Automated deployment pipelines

GoPHP LaravelMySQLGCPNginx

NDA · details available on request

Digital wallet · Payment gateway · REST API integration

Internet Payment Gateway — LinkAja Integration

2019–2020

Backend / Integration Engineer

▸Built Java Spring integration logic for payment gateway
▸Integrated REST APIs for digital wallet payment flows
▸Supported reliable payment gateway transaction processing

Java SpringJavaScriptREST API

NDA · details available on request

// Live Projects

Personal Projects

Side projects I built and shipped — real apps, live on the web.

Personal Finance · Mortgage · Banking

Live

KPR Calculator

Simulasi Kredit Pemilikan Rumah

Client-side Indonesian mortgage simulation tool — runs entirely in the browser, no backend, no account required.

▸Annuity & flat-rate simulation with fixed, floating, and multi-tier rate schedules
▸KPR Syariah/iB: Murabahah (margin tetap) and Musyarakah Mutanaqishah (ujrah menurun)
▸Affordability analysis: DSR check, stress test (+1–+3%), reverse affordability estimator
▸Upfront cost calculator: DP, provision, notary, BPHTB, PPN, life & fire insurance
▸Refinancing simulator, LTV guardrail vs BI caps, Buy vs Rent, FLPP subsidy check
▸Shareable URL (LZString), PDF/CSV export, up to 3 side-by-side scenarios, installable PWA

React 18TypeScriptViteTailwind CSSDecimal.jsPWA

Live Demo

E-Commerce · WhatsApp · Small Business

Live

W-Commerce

WhatsApp Catalog Commerce

Lightweight product-catalog storefront for small sellers — customers browse and check out by sending a pre-filled order to the store's WhatsApp.

▸Mobile-first catalog with category filter, product detail, and stock status
▸One-tap WhatsApp checkout — builds a formatted order summary into a wa.me link
▸Admin panel: product & category management, store settings, protected by Supabase Auth
▸RLS-first security — anon key only in app code; row-level policies are the security boundary
▸Defense-in-depth: session-refresh proxy + admin layout role check (admin vs staff)
▸Strict TypeScript + Zod schemas shared across form validation and server mutations

Next.jsTypeScriptTailwind CSS v4SupabaseZodshadcn/uiVercel

Live Demo

// Engineering Discipline

DevSecOps Workflow

Delivery discipline applied consistently — from local development to production deployment.

Engineering practices

01Feature branch isolation
02Code review readiness
03Build validation before merge
04Dependency and vulnerability checks
05CI/CD automation
06Secure access and authentication integration
07Environment-aware configuration
08Production readiness checks
09Penetration testing and vulnerability remediation support
10Performance testing before production release
11Deployment discipline across DC/DRC or cloud environments
12Monitoring and troubleshooting readiness
13Clear documentation and reproducible commands

Sample workflow

bash — feature/example-branch

1git status
2git checkout feature/example-branch
3npm install
4npm audit --audit-level=high
5npm run lint
6npm test
7npm run build
8codegraph sync .
9git add .
10git commit -m "feat: implement production-ready feature"
11git push origin feature/example-branch

Every commit on production-bound systems goes through audit, lint, test, and build validation before merge. Deployments are environment-aware and follow DC/DRC readiness checklists.

// Education

Academic Background

Mercu Buana University

Bachelor of Science, Informatics Engineering

Feb 2018 – Jan 2020West Jakarta

Del Institute of Technology

Associate Degree, Informatics Engineering

Aug 2014 – Sept 2017Laguboti, North Sumatera

// Contact

Let's work together

Open to senior engineering roles, freelance engagements, and collaboration on banking, fintech, and enterprise systems.

contact@vikoabastian.com

linkedin.com/in/vikoabastian

GitHub

github.com/vianbas

Location

Jakarta, Indonesia

Send me an email