Toni Tegar Sahidi
(Sam Toni)

Principal-level Software Engineer & IT Consultant

📧 tonitegarsahidi@gmail.com 📞 +62-852-0173-8000 🔗 LinkedIn 📍 Malang, Indonesia

15+ years of experience designing and evolving large-scale systems across enterprise, startup, and government environments. Known for leading architectural direction, stabilizing high-risk production systems, and driving cross-team engineering decisions that significantly improve reliability, scalability, and performance.

Proven impact includes reducing production errors by ~99%, improving API latency by ~30%, and modernizing legacy monolithic systems into scalable service-oriented architectures.

Sam Toni

💪 Core Strengths

  • System Architecture & Distributed Systems Design
  • Cross-Team Technical Leadership (without formal authority)
  • Production Reliability & Incident Recovery
  • Performance Optimization at Scale
  • Backend & Full Stack System Thinking
  • Engineering Mentorship & Technical Standards
  • Trade-off Analysis & Decision Making

🛠️ Technical Expertise

Architecture & Systems

Distributed Systems SOA RESTful API Design Caching Strategy Observability (ELK, Logging)

Technologies

Golang Laravel (PHP) Java Spring Boot JavaScript (React, Next.js) Redis Docker CI/CD AWS & GCP

🎓 Education & Certifications

S.Kom. Ilmu Komputer

Universitas Brawijaya Malang, Indonesia (2005–2012)

Selected Certifications

  • Google Data Analytics Professional Certificate
  • Cisco CyberOps Associate
  • Google Associate Cloud Engineer (Training Program)

🚀 Work Experience

Senior Software Engineer

PT Nuon Digital Indonesia (Telkom Group)

Oct 2022 – Present
  • Acted as a key architectural contributor across multiple backend systems, influencing design decisions spanning multiple teams.
  • Led system-wide stabilization initiative, reducing production errors from ~3000/day to ~30/day (~99% reduction).
  • Drove performance optimization strategy, improving API latency by ~30% through caching layers and endpoint redesign.
  • Designed and implemented NBP Gateway, a centralized integration layer that standardized inter-service communication.
  • Mentored engineers across teams, improving code quality, debugging practices, and system design awareness.
  • Led resolution of a critical production security incident, identifying compromised dependency and restoring system integrity.

Backend Engineer & Scrum Master

GameQoo Cloud Gaming

Jul 2021 – Oct 2022
  • Played a central role in transforming a legacy monolithic platform into a semi-microservices architecture.
  • Led backend service decomposition and caching strategy to improve scalability and maintainability.
  • Redesigned database structures to support evolving product requirements and system scalability.
  • Coordinated up to 15 engineers, improving delivery predictability and cross-team communication.

Full Stack Engineer / System Owner

CV Ruang Rimbun Indonesia

Mar 2020 – Sep 2021
  • Owned end-to-end system architecture and delivery across multiple projects.
  • Delivered SimOPT, a distributed system used by a government agency across 8 provinces.
  • Made independent architectural decisions covering database design, backend services, frontend structure, and deployment strategy.

Software Engineer & IT Lecturer

STT STIKMA Internasional

2012 – 2018
  • Built institutional systems and contributed to long-term system sustainability.
  • Taught programming and system design fundamentals, mentoring future engineers.
  • Led student teams to national-level IT competition achievements.

Independent Software Engineer

Freelance

2007 – 2020
  • Delivered full-cycle system development across diverse industries.
  • Built strong foundation in system design, adaptability, and problem-solving across domains.