OPEN FOR REMOTE & FREELANCE

Ahmad Dimas Abid Muttaqi

Backend

Backend Engineer who ships systems that last. 7+ years building production backends across airline loyalty, insurance, e-commerce, and government systems — with Java, Spring Boot, Kafka, Docker, and cloud-native infrastructure. Delivered 25+ microservices projects, improved code coverage and performance measurably, and remediated security vulnerabilities for monthly production sign-offs.

Ahmad Dimas Professional Portrait

Built for Global Operations

3+ years of fully remote experience — working solo across a 6-hour timezone gap with US-based clients and collaborating with distributed teams.

Global Async Specialist

Proven track record with US-based B2B platforms, managing complex e-commerce stacks independently.

Async-First Philosophy

Heavy emphasis on exhaustive documentation and proactive status reporting to eliminate synchronization bottlenecks.

Security-Aware Engineering

Hands-on OWASP remediation in regulated environments with monthly release sign-offs.

7+ Years Experience
5 Companies
3+ Years Remote
4 Industries

Engineering Strengths

Core competencies developed through production environments across insurance, government, e-commerce, and airline domains.

Legacy Modernization

Strangler-fig pattern migrations, monolith-to-microservices, Java 8 to 17/25 upgrades, zero-downtime deployments.

Security-First

OWASP remediation, mTLS, JWT/OAuth2, Auth0 integration, SSRF protection, key rotation, pentest clean sign-offs.

Performance Tuning

N+1 query elimination, cache stampede protection, Redis distributed locks, rate limiting, connection pool optimization.

Cloud Native

OpenShift, Docker, Quarkus, AWS S3, multi-stage builds, and containerized deployments.

Full Observability

ELK Stack, APM, Prometheus, Grafana, OpenTelemetry, structured logging (ECS), distributed tracing, health checks.

Testing Discipline

Jacoco enforcement, Testcontainers, JUnit/Mockito, Vitest, integration testing, and CI/CD quality gates.

Professional Experience

A track record of hands-on engineering and architectural growth across diverse domains.

Feb 2026 - Present

Backend Developer

KEMENTERIAN KEUANGAN RI

  • » Developed and maintained backend services using C# and .NET Core for performance assessment systems.
  • » Conducted system maintenance and performance optimization under strict government compliance.
  • » Operated fully remote within a distributed government enterprise team.
C#.NET Core
Nov 2023 - Apr 2026

Backend Developer (Java)

AXA MANDIRI FINANCIAL SERVICES

  • » Led incremental migration of legacy services to Red Hat OpenShift using strangler-fig pattern.
  • » Remediated OWASP security vulnerabilities identified by pentesters before every monthly deployment.
  • » Raised code coverage from below 30% to 80%+ by integrating JUnit/Mockito test suites.
  • » Built centralized observability from scratch: ELK Stack with APM for log correlation and distributed tracing.
JavaSpring BootQuarkusOpenShiftKafkaAWS MSKAWS S3ELK Stack
Jun 2020 - Nov 2023

Full-Stack Developer

LIME COMMERCE (Remote US Client)

  • » Sole developer for Bramble Company (US-based), working fully independently across 6-hour TZ gap.
  • » Improved PageSpeed score from below 35 to 90+ through intensive asset optimization.
  • » Migrated production Magento 1 store to Magento 2, including data and custom extension porting.
  • » Built and customized 10+ Magento 2 extensions across the full e-commerce stack.
PHPMagento 2LinuxMySQLREST APIs
Jul 2019 - Apr 2020

Backend Developer

DOT INDONESIA

  • » Built RESTful APIs for OSVAS (One Space Canvas), a real estate discovery platform.
  • » Developed applications using PHP, Laravel, and Laravel Nova within an Agile environment.
  • » Integrated with frontend teams via a DevOps-managed CI/CD pipeline.
PHPLaravelLaravel NovaMySQLREST APIsCI/CD
Jul 2018 - Jul 2019

Software Engineer

PT. AERO SYSTEMS INDONESIA

  • » Delivered AMALA Loyalty Management System for Garuda Indonesia and Citilink.
  • » Integrated Apache Camel for enterprise workflow automation.
  • » Deployed services using Docker and Kubernetes for high-scale airline operations.
JavaSpring BootApache CamelDockerKubernetes

Education

Academic foundation in computer science and information technology.

2019 - 2023

Bachelor of Technology

BINA NUSANTARA UNIVERSITY

Computer Science

Studied software engineering, distributed systems, and backend architecture. Applied theoretical knowledge to real-world projects during academic years.

2015 - 2018

Information Technology

SMK TELKOM MALANG

Vocational High School

Specialized in software development fundamentals, networking, and early systems administration. Built a strong foundation in programming and problem-solving.

Featured Projects

Bramble B2B

Bramble B2B

US-based custom furniture wholesaler (Wisconsin). Migrated Magento 1 to 2, built 10+ custom extensions, optimized PageSpeed from 35 to 90+. Sole developer for 3.5 years.

Magento 2PHPMySQLLinuxRedis
URL Shortener

URL Shortener

Production-quality Java 25 service with Redis caching, rate limiting (Bucket4j), and observability (Prometheus + Grafana). Database migrations via Flyway, containerized with Docker Compose.

Java 25Spring Boot 4PostgreSQLRedisFlywayDocker
Job Prep Assistant

Job Prep Assistant

AI-powered job analyzer with multi-provider LLM orchestration, SSRF protection, and NDJSON streaming. Built with comprehensive testing using Vitest and Zod validation.

Next.js 16TypeScriptVercel AI SDKVitestZod

Technical Arsenal

Languages & Runtimes

  • Java (7+ Years) Proficient
  • PHP (3+ Years) Proficient
  • TypeScript Familiar
  • C# / .NET Core Familiar
  • Go / Python Familiar

Frameworks & Platforms

  • Spring Boot / Cloud Proficient
  • Quarkus Familiar
  • Next.js / React Familiar
  • Apache Camel Familiar
  • Laravel / Magento 2 Proficient
  • NestJS Learning

Data & Infrastructure

  • PostgreSQL / MySQL Proficient
  • Redis / MongoDB Familiar
  • Docker / OpenShift Familiar
  • Kafka / AWS MSK Familiar
  • Linux / CI-CD Familiar

Observability & Security

  • ELK Stack Proficient
  • Prometheus / Grafana Familiar
  • OpenTelemetry Learning
  • JWT / OAuth2 Familiar
  • Resilience4j Familiar

Remote Success DNA

  • Documentation Mindset

    Writing as a primary mode of scaling knowledge and reducing meetings.

  • Proactive Sync

    Consistent status updates across timezones for maximum visibility.

  • Extreme Ownership

    Solo developer experience handling end-to-end US-based production environments.

ENGINEERING PRINCIPLES

SOLID / OOP
Domain-Driven Design
Clean Architecture
TDD / CI-CD
Strangler-Fig Pattern
OWASP / Security

Services

Available for freelance and consulting engagements across the full software development lifecycle.

Custom Software

Backend systems, APIs, and microservices built to spec.

SaaS Development

Multi-tenant architectures, billing, and scaling strategies.

Legacy Modernization

Strangler-fig migrations, Java upgrades, monolith decomposition.

Security Audits

OWASP remediation, vulnerability assessment, and hardening.

Let's Build Something Together

Currently open to backend engineering roles, freelance contracts, and consulting. I enjoy working on microservices, legacy modernization, and systems that teams can actually maintain.