HR.

Hey, I'm

Hadian Rahmat

Over 8 years, I've learned that great engineering is about building systems that survive chaos, leading teams that solve hard problems, and making decisions rooted in judgment. I'm a backend engineer at heart—architecting cloud-native systems in Go, Node.js, and PHP that handle millions of users. I've optimized databases that shaved seconds off response times, designed microservices that let teams move independently, and built APIs that scale. But I'm equally comfortable shipping complete solutions—writing responsive frontends, orchestrating DevOps, ensuring every piece works seamlessly. My foundation is backend depth; my flexibility is full-stack breadth.

In an evolving tech landscape, I practice AI-augmented development. I leverage Claude, ChatGPT, and Gemini as thinking partners—exploring architecture faster, reviewing code more thoroughly, prototyping ideas in minutes. But I remain the architect. I validate rigorously, question critically, and ship nothing that doesn't meet my standards. It's judgment-first, AI-enhanced—not the other way around.

What excites me most is impact through people and systems. I lead with technical credibility, whether managing engineering teams, establishing standards, or mentoring engineers toward mastery. I've contributed to meaningful missions: scaling systems for millions, driving digital transformation in government, and as an organizer at GDG Bandung, cultivating a thriving developer community where engineers learn new technologies, connect with peers, and grow their careers. As a Google Cloud Professional Developer, I've learned that great technology is built by great teams, not great individuals. I'm drawn to Senior Engineer, Tech Lead, or Engineering Manager roles where technical depth drives decisions and teams grow alongside technology.

View ATS CV ATS-ready Learn more about my experience

EXPERIENCE

Staffinc Group

Jakarta, Indonesia

Full Stack Engineer

Sep 2025 - Dec 2025 Freelance / Contract

As a Full Stack Engineer at Staffinc Group, I contribute to the development of innovative solutions that drive business success. Working in a hybrid environment in Jakarta, I leverage my expertise in both frontend and backend technologies to build scalable and user-centric applications.

  • Developing full-stack applications that meet client requirements and business objectives.
  • Collaborating with product and design teams to ensure seamless integration of features and optimal user experience.
  • Implementing best practices in code quality, security, and performance optimization.

Badan Kepagawaian Daerah Provinsi Jawa Barat

Bandung, Indonesia

Tenaga Ahli - Fullstack Engineer

Oct 2024 - Jun 2025 Full-time

As a Fullstack Engineer, I leverage my extensive experience in software development to drive digital transformation within the public sector. I am instrumental in designing, developing, and maintaining critical applications that streamline civil service processes, enhancing efficiency and accessibility for thousands of employees across the region.

  • Developing and optimizing full-stack applications to meet the evolving needs of the agency.
  • Implementing robust and scalable solutions that ensure data security and system reliability.
  • Collaborating with cross-functional teams to deliver innovative and user-centric applications.

GITS Indonesia

Jun 2018 - Sep 2024

Bandung, Indonesia

Engineering Manager

Sep 2022 - Sep 2024 Full-time

I lead a team of talented software engineers to develop and maintain high-quality products. With experience in the tech industry, I have a proven track record of delivering successful projects on time and within budget. In my current role, I prioritize collaboration and clear communication to ensure that my team has the support and resources they need to do their best work. I also stay up-to-date on industry best practices and emerging technologies to ensure that we are using the right tools and approaches to meet the evolving needs of our customers.

  • Improving team productivity, efficiency, and collaboration leading to faster project delivery and higher-quality outcomes.
  • Leading projects from conception to completion, meeting or exceeding project goals, timelines, and budgets while ensuring high-quality deliverables.
  • Implementing process improvements and best practices such as Agile methodologies, CI/CD pipelines, and DevOps practices to streamline development workflows and increase efficiency.
  • Cross-Functional Collaboration: Facilitating effective collaboration between engineering teams and other departments such as product management, design, and QA to ensure alignment and smooth project execution.
  • Technical Innovation: Spearheading initiatives to explore and adopt new technologies, tools, and frameworks to enhance product features, performance, and scalability.

Chapter Lead Backend

Mar 2021 - Sep 2022 Full-time

I manage a team of experienced software engineers who develop and maintain the server-side of our products. I am skilled in leading cross-functional teams and implementing best practices to ensure the success of our projects. In my current role, I work closely with the product and design teams to deliver scalable and reliable backend solutions that meet the needs of our customers. I also mentor and provide guidance to my team members to help them grow and succeed in their careers.

  • Team Growth and Development: Successfully mentoring junior engineers, fostering their technical growth, and helping them advance their careers within the organization.
  • Technical Leadership: Providing guidance and leadership to backend engineering teams, ensuring alignment with best practices, architectural standards, and coding conventions.
  • Project Delivery: Leading backend development efforts on complex projects, ensuring timely delivery of high-quality, scalable solutions that meet or exceed client requirements.
  • Code Quality Improvement: Implementing initiatives to improve code quality, readability, and maintainability through code reviews, refactoring, and adherence to coding standards.

Backend Engineer

Jun 2018 - Mar 2021 Full-time

I am responsible for developing and maintaining the server-side of our products. In my current role, I work closely with the rest of the engineering team to design and implement scalable, efficient, and reliable backend solutions. I also stay up-to-date on the latest industry best practices and technologies to ensure that we are using the right tools to meet the evolving needs of our customers.

  • Scalable Architecture: Designing and implementing scalable backend architectures that accommodate rapid user growth and ensure high performance under heavy loads.
  • Optimized Database Performance: Optimizing database queries, indexing strategies, and data models to improve overall system performance and reduce latency.
  • Security Enhancements: Implementing robust security measures such as encryption, authentication, and authorization to protect sensitive data and prevent security breaches.
  • Feature Development: Leading the development of key backend features or modules that enhance product functionality, usability, and customer satisfaction.
  • API Design and Documentation: Designing intuitive and well-documented APIs that facilitate seamless integration with frontend applications and third-party services.
  • Bug Fixing and Maintenance: Proactively identifying and resolving bugs or performance issues in the backend codebase, ensuring a stable and reliable application experience for users.
  • Code Quality and Standards: Maintaining high standards of code quality, readability, and maintainability through code reviews, coding standards, and best practices.
  • Continuous Learning: Actively seeking opportunities for learning and professional development to stay updated on industry trends, emerging technologies, and best practices in backend development.

PT Jaya Data Informatika

Bandung, Indonesia

Web Developer

Aug 2017 - Jun 2018 Full-time

I am a Full-Stack Developer with a comprehensive skill set spanning both front-end and back-end development. I have experience in designing and developing complete web applications from the ground up. My expertise includes Laravel and Codeigniter. I am passionate about creating innovative and efficient web solutions.

EDUCATION

Widyatama University

2018 - 2022

Bandung, West Java, Indonesia

  • Information System
  • In my studies, I gained a strong foundation in computer science, programming, and systems analysis, with a focus on business applications. I also developed my communication and teamwork skills through group projects and internships.

SMK Negeri 4 Bandung

2014 - 2017

Bandung, West Java, Indonesia

  • Software Engineering
  • During my time at SMK Negeri 4 Bandung, I honed my skills in software development by completing numerous projects, including Bandung SmartBus. I gained proficiency in programming languages such as Java, PHP, and C++, and I have a strong understanding of object-oriented programming principles. Additionally, I am experienced in using version control systems like Git and have contributed to open-source projects on GitHub. My coursework also covered database design, web development, and software testing methodologies.

TECHNOLOGY & EXPERTISE

Core Engineering & Backend Ecosystem

My foundation. I've built systems that handle millions of users, optimized databases that shaved seconds off queries, and designed APIs that teams love to integrate with.

Languages & Runtimes

  • PHP
    Where I started and still deliver. Laravel for rapid enterprise applications, Lumen for lightweight APIs that fly, Codeigniter for maintaining legacy systems that power real businesses.
    Laravel Codeigniter Lumen
  • Go (Golang)
    For when performance is non-negotiable. I build high-concurrency microservices that process millions of requests, handle distributed workloads, and scale horizontally without breaking a sweat.
    Microservices Concurrency High Performance
  • Node.js & Modern Runtimes
    The JavaScript ecosystem at scale. Express.js for battle-tested APIs, AdonisJS for full-featured backends with elegant architecture, Bun with ElysiaJS for prototypes that become production.
    Express.js AdonisJS Bun ElysiaJS

Architecture & Data

  • System Architecture
    I design systems that survive reality. Microservices for teams that need independence, RESTful APIs that age well, GraphQL when clients need flexibility. I've migrated monoliths, split services, and made architectural decisions that let teams move fast without breaking things.
    Microservices RESTful APIs GraphQL Event-Driven Architecture
  • Databases & Caching
    Data is the hard part. I optimize MySQL and PostgreSQL schemas, design indexes that matter, implement Redis caching strategies that actually improve performance, and have migrated production databases with zero downtime.
    MySQL PostgreSQL Redis Query Optimization

Cloud Infrastructure & DevOps

I build for production, not just localhost. Cloud-agnostic capability with deep expertise in Google Cloud.

Cloud Platforms

  • Multi-Cloud Expertise
    Google Cloud Platform (GCP) is my home—Certified Professional Developer with production experience in Compute Engine, Cloud Run, and GKE. I also work with AWS (EC2, RDS, Lambda) and Microsoft Azure when projects demand it. I choose platforms based on what solves the problem, not what's trendy.
    GCP AWS Microsoft Azure Cloud Architecture

DevOps & CI/CD

  • Containerization & Orchestration
    Docker is how I ship. Kubernetes (GKE) is how I scale. I've containerized legacy apps, orchestrated multi-service deployments, and debugged production clusters at 3 AM. I know when to use them and when they're overkill.
    Docker Kubernetes GKE Container Orchestration
  • CI/CD Pipelines
    Automation that developers trust. Jenkins for legacy enterprise workflows, GitHub Actions for modern workflows that just work, GitLab CI when everything lives in one place. I've reduced deployment times from hours to minutes and made rollbacks a non-event.
    Jenkins Github Actions GitLab CI Automated Deployment

AI-Augmented Workflow

How I think faster, prototype quicker, and validate more thoroughly. AI as a thinking partner, not a replacement for judgment.

Strategic AI Usage

I don't use AI for everything—I use it strategically:

  • Claude
    My go-to for complex system architecture, deep reasoning about tradeoffs, and refactoring legacy code. When I need to think through hard problems, Claude helps me explore more paths faster.
    Architecture Deep Reasoning Refactoring
  • GPT Family (ChatGPT)
    Rapid prototyping and boilerplate generation. Perfect for getting 80% of the way there on common patterns, then I refine the remaining 20% that matters.
    Prototyping Boilerplate Code Generation
  • Gemini
    Google ecosystem integration and large context analysis. Especially useful for understanding legacy codebases and cross-referencing documentation at scale.
    Google Integration Context Analysis Code Understanding

Development Tools

  • AI-Powered IDEs
    GitHub Copilot for autocomplete that reads my mind, Cursor for AI-native editing workflows, Gemini Code Assist for GCP-specific tasks. But every suggestion gets reviewed—AI accelerates, experience validates.
    Github Copilot Cursor Gemini Code Assist

Engineering Leadership

What I've learned from leading teams, scaling organizations, and making technical decisions that have business consequences.

Leadership in Practice

  • Strategic Leadership
    I've led cross-functional teams, built technical roadmaps that survive contact with reality, and managed backend chapters where standards matter. Leadership is about making the right tradeoffs when perfect isn't possible.
    Cross-Functional Teams Technical Roadmaps Chapter Leadership
  • People Growth & Mentorship
    I mentor the way I wish someone had mentored me: with patience, high standards, and genuine belief that great engineers are made, not born. I've seen junior engineers become tech leads and watched teams grow beyond what they thought possible.
    Active Coaching Technical Mentorship Career Development
  • Operational Excellence
    Agile/Scrum when it adds value, pragmatism when it doesn't. Sprint planning that teams actually follow, OKRs that align work with business goals, KPIs that measure what matters instead of what's easy.
    Agile Scrum OKRs KPIs Process Design
  • Stakeholder Management
    Translating between technical reality and business expectations. I work with product teams to find what's possible, and with C-level stakeholders to explain why the right solution takes time. Technical credibility earns trust; trust enables good decisions.
    Product Collaboration Executive Communication Business Translation
  • Talent Acquisition
    I hire for potential, not just pedigree. End-to-end hiring for high-performing teams means looking beyond resumes—finding people who solve problems, learn fast, and make teams better by being part of them.
    Technical Interviewing Team Building Talent Assessment

ORGANIZATION

Organizer GDG Bandung

2022 - Present

Bandung, West Java, Indonesia

  • GDG Bandung is a technology community dedicated to developing the technology ecosystem in Bandung, West Java, Indonesia. GDG stands for Google Developer Group, which is a global network of developer communities interested in Google technologies.

Organizer BandungDev

2023 - Present

Bandung, West Java, Indonesia

  • BandungDev is a tech community for software developers, programmers, engineers in Bandung area and around it. Therefore each event or discussion would be either combining different topics or focusing on just one tech in particular.

GDG On Campus Lead Widyatama

2020 - 2021

Bandung, West Java, Indonesia

  • GDG (Google Developer Group) on Campus Widyatama University is a student community focused on technology development, programming, and innovation. Members of GDG on Campus Widyatama University engage in various activities such as training, workshops, seminars, and technology projects aimed at enhancing understanding and skills in software development, artificial intelligence, application development, and other cutting-edge technologies. This community collaborates with Google to provide access to resources, mentors, and opportunities to contribute to relevant technology projects. GDG on Campus Widyatama University encourages collaboration, learning, and creativity among students with interests in the technology field.