Open to opportunities

Hans Christian

@hanschristian

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IT Infrastructure & Security Specialist with 7 years of experience.

Indonesia

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What I'm looking for

I am looking for opportunities that allow me to lead security initiatives and drive infrastructure innovation in a collaborative environment.

I am an IT Infrastructure & Security Specialist with over 7 years of experience in securing critical systems within the banking sector. My expertise lies in Web Application Firewalls (WAF), particularly with Akamai and Imperva, as well as middleware automation using Kafka. I have a proven track record of enhancing operational efficiency and securing high-traffic applications.

In my current role as a Manager at PT Bank Mandiri, I led the migration to a next-gen WAF, successfully protecting critical applications against over 200,000 daily threats. My leadership of a 24/7 security monitoring team has ensured zero security breaches, demonstrating my commitment to maintaining the integrity of security systems. I am passionate about bridging the gap between technology and business objectives, ensuring that infrastructure aligns with regulatory compliance.

Experience

Work history, roles, and key accomplishments

Current

Manager – IT Infrastructure & Data Protection

Current

PT Bank Mandiri Tbk.

Apr 2023 - Present (2 years 3 months)

Led the migration to Akamai Next-Gen Web Application Firewall (WAF), securing critical applications and reducing latency by 20%. Managed WAF protection for over 300 public-facing sites across multiple platforms and built an end-to-end WAF log delivery, monitoring, and alerting pipeline.

Akamai Grafana Slack Security Monitoring

Senior Technology Consultant

Ernst & Young (EY)

Jul 2022 - Present (3 years)

Led the infrastructure and security stream in a core banking system transformation for a private bank in Indonesia. Developed IT Strategic Plans for infrastructure architecture to ensure regulatory compliance in banking and real estate sectors.

IT strategy Infrastructure Regulatory Compliance Project Management

Senior IT Specialist System & Infrastructure - Middleware Messaging Team Lead

PT Bank Central Asia Tbk.

Jan 2021 - Present (4 years 6 months)

Led a team of 6 engineers to operate scalable messaging infrastructure using Kafka and IBM MQ. Designed and deployed Kafka-based services for mission-critical banking features and implemented secure Confluent Kafka clusters with Kerberos, SSL, and secret protection.

Kafka Confluent Kerberos SSL Stream Processing Ansible

Senior IT Specialist System & Infrastructure - Middleware Integration Team

PT Bank Central Asia Tbk.

Jan 2020 - Present (5 years 6 months)

Integrated over 1000 backend services into banking channels handling 40M+ daily transactions using Oracle Service Bus, Openshift, and 3scale. Delivered SOA-based integrations and designed and implemented Oracle Coherence in-memory caching to cut backend access latency by 50%.

OpenShift 3scale SOA Oracle Coherence Redis Cluster Shell Scripting Backend

Senior IT Specialist System & Infrastructure - Middleware Application Team

PT Bank Central Asia Tbk.

Feb 2019 - Present (6 years 5 months)

Managed infrastructure for 150+ applications and 1000+ servers across 3 data centers, including BCA Mobile and KlikBCA. Delivered production-grade environments with app/web server configuration, proxy setup, and storage planning.

JBoss Proxy Dynatrace Data Center Management

BCA IT Trainee Batch 4

PT Bank Central Asia Tbk.

Aug 2018 - Present (6 years 11 months)

Completed an elite training track across application, infrastructure, and security domains. Recognized as the Best Graduate of Batch 4.

Application Development Infrastructure Management Security Principles Problem Solving Teamwork

Education

Degrees, certifications, and relevant coursework

BPK PENABUR 1 Bandung Senior High School

Senior High School Diploma, Science Program

Graduated from the Science Program as the Best Student.

Bandung Institute of Technology (ITB)

B.Eng., Electrical Engineering (STEI)

Grade: 3.94 / 4.00 | Top 1% Graduate

Activities and societies: Final Project: Car Black Box (Best Engineering Promotion 2018)

Completed a Bachelor of Engineering in Electrical Engineering (STEI) with a GPA of 3.94 / 4.00, graduating as a Top 1% student. The final project, 'Car Black Box,' was recognized as Best Engineering Promotion 2018.