Information Technology Solution With
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Transforming Concepts into Seamless User Experiences
Hi! I'm Raka Janitra, a Software / Platform & Security Engineer based in Jakarta 🇮🇩
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My work experience
Software Engineer - Kelas Pintar Indonesia
Data Engineer - Bank BTPN
(TL) Platform Engineer - PT Pharos Indonesia
(Part-Time) Red Team Offensive - PT PLN Energi Primer Indonesia
Sr. Platform and Security Engineer (L3) - A1C LTE. PTD
A Selection of
Professional
Certifications
(CLLMSE) - Certified LLM Security Expert
Certified LLM Security Expert (CLLMSE) demonstrates hands-on mastery in securing LLM and AI-agent systems across nine security domains. The certification covers prompt injection, jailbreak techniques, adversarial attacks, the OWASP Top 10 for LLM Applications, NIST AI RMF, MITRE ATLAS, AI governance, blue-team monitoring, identity and access management, secure agent architecture, lifecycle operations, and AI supply-chain risk. The practical lab goes beyond theory by testing the ability to exploit real AI vulnerabilities, apply the appropriate guardrails, and prove that the implemented defenses successfully block the original attacks.
(CLLMSE) - Certified LLM Security Expert
Certified LLM Security Expert (CLLMSE) demonstrates hands-on mastery in securing LLM and AI-agent systems across nine security domains. The certification covers prompt injection, jailbreak techniques, adversarial attacks, the OWASP Top 10 for LLM Applications, NIST AI RMF, MITRE ATLAS, AI governance, blue-team monitoring, identity and access management, secure agent architecture, lifecycle operations, and AI supply-chain risk. The practical lab goes beyond theory by testing the ability to exploit real AI vulnerabilities, apply the appropriate guardrails, and prove that the implemented defenses successfully block the original attacks.
(CCSP-AWS) - Certified Cloud Security Practitioner
Certified Cloud Security Practitioner (CCSP-AWS) demonstrates a foundational understanding of how cloud systems on Amazon Web Services (AWS) are secured, focusing on protecting data, applications, and infrastructure in cloud environments.
(CCSP-AWS) - Certified Cloud Security Practitioner
Certified Cloud Security Practitioner (CCSP-AWS) demonstrates a foundational understanding of how cloud systems on Amazon Web Services (AWS) are secured, focusing on protecting data, applications, and infrastructure in cloud environments.
(CNSP) - Certified Network Security Practitioner
Certified Network Security Practitioner (CNSP) is a foundational certification that demonstrates an understanding of how computer networks are protected from common threats, helping ensure data and systems stay safe in everyday digital environments.
(CNSP) - Certified Network Security Practitioner
Certified Network Security Practitioner (CNSP) is a foundational certification that demonstrates an understanding of how computer networks are protected from common threats, helping ensure data and systems stay safe in everyday digital environments.
(CCEP) - Certified Cybersecurity Educator Professional
Certified Cybersecurity Educator Professional (CCEP) demonstrates the ability to both understand cybersecurity concepts and effectively teach them to others. This certification highlights expertise in protecting digital systems, managing security risks, and guiding individuals or teams to follow best security practices in real-world environments.
(CCEP) - Certified Cybersecurity Educator Professional
Certified Cybersecurity Educator Professional (CCEP) demonstrates the ability to both understand cybersecurity concepts and effectively teach them to others. This certification highlights expertise in protecting digital systems, managing security risks, and guiding individuals or teams to follow best security practices in real-world environments.
(CRTOM) - Certified Red Team Operations Management
Certified Red Team Operations Management (CRTOM) demonstrates expertise in building and managing threat-led red team programs, including adversary emulation, cloud red teaming, detection validation, and executive-level risk reporting. The certification emphasizes operational safety, governance, and measurable security improvement rather than exploit-driven testing.
(CRTOM) - Certified Red Team Operations Management
Certified Red Team Operations Management (CRTOM) demonstrates expertise in building and managing threat-led red team programs, including adversary emulation, cloud red teaming, detection validation, and executive-level risk reporting. The certification emphasizes operational safety, governance, and measurable security improvement rather than exploit-driven testing.
SQL (Advanced) - Certified
SQL (Advanced) Certification from HackerRank, demonstrating strong proficiency in advanced SQL concepts such as complex joins, subqueries, window functions, data aggregation, and performance-oriented querying. This certification reflects my ability to work with complex datasets, optimize queries, and support data-driven decision making in production environments.
SQL (Advanced) - Certified
SQL (Advanced) Certification from HackerRank, demonstrating strong proficiency in advanced SQL concepts such as complex joins, subqueries, window functions, data aggregation, and performance-oriented querying. This certification reflects my ability to work with complex datasets, optimize queries, and support data-driven decision making in production environments.
Software Engineer - Certified
Software Engineer Certification from HackerRank, demonstrating strong proficiency in backend software engineering fundamentals, including relational database design and advanced SQL using PostgreSQL, backend development with Go, RESTful API design, and algorithmic problem solving. This certification reflects my ability to build reliable, efficient, and scalable systems, apply sound data modeling practices, implement well-structured APIs, and reason through complex problems with performance and maintainability in mind.
Software Engineer - Certified
Software Engineer Certification from HackerRank, demonstrating strong proficiency in backend software engineering fundamentals, including relational database design and advanced SQL using PostgreSQL, backend development with Go, RESTful API design, and algorithmic problem solving. This certification reflects my ability to build reliable, efficient, and scalable systems, apply sound data modeling practices, implement well-structured APIs, and reason through complex problems with performance and maintainability in mind.
Go (Intermediate) - Certified
Go (Intermediate) Certification from HackerRank, demonstrating strong proficiency in core Go concepts such as functions, pointers, file handling, structured error handling, and building web services. This certification reflects my ability to develop reliable backend services, write maintainable code, and apply Go effectively in real-world, production-oriented environments.
Go (Intermediate) - Certified
Go (Intermediate) Certification from HackerRank, demonstrating strong proficiency in core Go concepts such as functions, pointers, file handling, structured error handling, and building web services. This certification reflects my ability to develop reliable backend services, write maintainable code, and apply Go effectively in real-world, production-oriented environments.
Latest docs & projects
Welcome to raka.docs
This blog contains notes, experiments, and personal documentation around backend engineering, cloud infrastructure, and security.
Observability Series 06: Prometheus and Grafana — Metrics, Alerts, and Service Health
After exploring OpenTelemetry, Jaeger, Falco, and Loki, this article explains how Prometheus and Grafana help platform teams understand service health through metrics, alerts, and dashboards.
Observability Series 07: SLI, SLO, and SLA — Measuring Reliability Without Guesswork
After building observability with traces, logs, and metrics, this article explains how SLI, SLO, SLA, and error budgets help teams measure reliability from the user's point of view.
Observability Series 05: Loki, Logstash, and Grafana — Building a Practical Centralized Logging Pipeline
After exploring OpenTelemetry, Jaeger, and Falco, this article explains how Loki, Grafana, and optional Logstash processing help platform teams investigate real production issues through centralized logs.
Observability Series 04: Falco 101 — Runtime Security for Kubernetes and Linux
After understanding tracing with Jaeger, this article explains how Falco helps detect suspicious runtime behavior from running systems.
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