Joel Bryan Juliano

Joel Bryan Juliano

Senior Software Engineer

20+
Years Experience
10M+
Daily Transactions
28K+
OSS Downloads
30+
Certifications
EITCA AI Certified Dutch Citizen Available Immediately

About

Senior Software and Systems Engineer with over 22 years of expertise in Linux systems, backend development, infrastructure automation, and cybersecurity. Currently a Software Engineer at Randstad Digital, delivering enterprise software solutions across backend development, infrastructure automation, and cloud architecture. Most recently a System Engineer at the Dutch Tax Office (Belastingdienst) — IV Analytics — operating production infrastructure processing ≈€300 billion/year in tax revenue.

Founded kdeps (kdeps.com) — an LLM orchestration platform for multi-agent workflows; AI agent registry at kdeps.io (in development). Scaled DAZN's global payment systems to 10M+ daily transactions. Author of 4 technical books on AWS, Kubernetes, Emacs, and Go (Leanpub, 2020–2026). Creator of Bato, the first programming language in Filipino.

📍 Amsterdam / Diemen, Netherlands
📧 joelbryan.juliano@gmail.com
📞 +31 (0) 613106364
🔗 linkedin.com/in/joeljuliano
💻 github.com/jjuliano
🌎 English, Nederlands (A2), Tagalog

Skills & Technologies

⚙ Systems & Infrastructure

Linux (20+ yrs)RHELAnsibleTerraform (6+ yrs)CloudFormationChef/PuppetsystemdSELinuxBash

🛠 Programming Languages

Go (7+ yrs)Ruby/Rails (10+ yrs)Python (4+ yrs)JavaScript (15+ yrs)TypeScript (6+ yrs)C++ (5+ yrs)JavaObjective-C

☁ Cloud & DevOps

AWS (Lambda, SQS, ECS, EC2)Kubernetes (6+ yrs)DockerHelmgRPC/ProtobufKafkaGitHub ActionsJenkins

📊 Databases & Data

PostgreSQLTeradataDB2DynamoDBCassandraMongoDBSnowflakeElasticsearchHadoop

🔍 Observability & Security

Splunk (on-prem & hybrid)SIEMCloudWatchKibanaPagerDutyMattermostMITRE ATT&CKOpenTelemetry

🧠 AI & Machine Learning

LLMs / RAGAI AgentsTensorFlowPyTorchKerasGoogle Cloud MLTensorFlow Quantum

Experience

Software Engineer

Mar 2026 -- Present

Randstad Digital · Netherlands

  • Enterprise software solutions for clients across various domains — backend development, infrastructure automation, and cloud architecture.
  • Apply Go, Python, Ruby, AWS, Kubernetes, and Terraform expertise to deliver reliable, scalable solutions meeting enterprise requirements.
  • Previous assignment: System Engineer at Belastingdienst (Dutch Tax Office) — IV Analytics, 2025–2026.

System Engineer

2025 -- 2026

Belastingdienst (Dutch Tax Office) · Netherlands

  • Built and maintained 2 production systems processing millions of transactions daily (~€300 billion/year) in the IV Analytics team
  • Designed IMS Interface (FAMP003) for automated IMS role/permission management via API-driven workflows, used by government employees nationwide
  • Built Batch Service Automation (BSA): rule-based YAML system transferring files to thousands of servers across government institutions
  • Built 2 production systems integrating with Teradata as the primary database; architected for DB2/PostgreSQL migration compatibility; Python scripts for SAS Teradata integration
  • Implemented systemd services with SELinux security contexts; full automation pipeline with Mattermost notifications

Founder & Lead Software Engineer

Sep 2024 -- Present

kdeps (kdeps.com) · Amsterdam, Netherlands (Remote)

  • Leading AI startup developing open-source LLM dependency orchestration framework for multi-agent workflows
  • Built core product and RAG graph library in Golang; supports 12 resource types (LLM, SQL, HTTP, Python, Shell, PDF, TTS, vector embeddings, email, web scraper, bot reply, agent-to-agent)
  • Kartographer Engine: automatic inference and ordering of execution dependencies via dependency graph construction
  • Deployment: Docker, Kubernetes, ISO, Homebrew tap; Apache 2.0 licensed; v2.0.0 production-ready

Senior Software Engineer

Apr 2019 -- Sep 2024

DAZN Group · The Randstad, Netherlands

  • Scaled payment systems to handle 10M+ daily transactions across 200+ countries
  • Built Revenue Recovery tool identifying millions of euros in misregistered users across distributed systems
  • Modernized core platform from monolithic .NET to AWS Lambda microservices, reducing latency by 90% across 4 global regions
  • Built internal tools (CABIT, Terebu) for change management and testing used by 300+ engineers
  • Managed 24/7 on-call via PagerDuty; mentored junior developers; led CI/CD pipeline overhaul

Backend Software Engineer

Mar 2018 -- Mar 2019

Jexia B.V. · Apeldoorn, Netherlands

  • Built MVP using Go, Kubernetes, gRPC, and Protobuf
  • Created custom Kubernetes middleware for resource allocation; automated bare-metal Linux deployments achieving 60k+ services/node
  • Developed high-performance gRPC microservices for dataset and file management using Kafka

Lead Software Engineer / Team Lead

Oct 2016 -- May 2018

ALTUS Digital Capital · Singapore

  • Led development of iamClaire (social e-commerce) and GoSPCE (lifestyle booking) from scratch to production in 6 months
  • Managed remote team of 4 engineers and 3 quality analysts; established Jenkins CI/CD pipelines for AWS

Senior Software Engineer

Jul 2013 -- Mar 2016

VIPRE Security Group · Taguig, Philippines

  • Led development of macOS VIPRE Antivirus and ThreatTrack Hardware Appliance malware gateway
  • Core team developing VIPRE anti-malware engine with AI-powered protection
  • Built Java-based antivirus engine; processed large-scale malware telemetry using Hadoop
  • Collaborated with Silicon Valley vendors on antivirus architecture white papers

Senior Software Engineer

Mar 2012 -- Jan 2013

2XL Games · Makati, Philippines

  • Developed cross-device games for iPhone, PlayStation, Nintendo, and Xbox platforms
  • Led iOS game development team of 5; created RPG server infrastructure

Senior Software Engineer / Team Lead

Feb 2011 -- Mar 2012

Getaroom.com (acquired by Booking.com for $1.2B) · Dallas, TX, USA

  • Spearheaded migration of legacy Rails 2 app to Rails 3, managing a remote team of 4
  • Contributed to Arel and Geokit open-source gems; built geolocation services on AWS
  • Managed hotel inventory at scale using Cassandra for high-throughput distributed storage

Software Engineer

Jan 2009 -- May 2010

8Layer Technologies, Inc. · Pasig, Philippines

  • Led VoIP infrastructure development using Asterisk and Adhearsion
  • Created Zenith VoIP and KahelOS Linux distributions (first Filipino Arch-based distro)

Technical Consultant

Jan 2004 -- May 2004

Unilox Industrial Corporation · Pasig, Philippines

  • Developed MRP system for manufacturing logistics and Java-based Point of Sale (POS) system

Notable Projects & Open Source

kdeps

Founder · Go · Apache 2.0

LLM dependency orchestration platform for multi-agent workflows. Compose chat, code, and data into declarative YAML pipelines. Export as binary, ISO, Docker, or K8s pods. v2.0.0 production-ready.

Bato

Creator · Ruby · 9,702 downloads

First programming language in native Filipino dialect (Tagalog). Featured in The Register (2018). Ruby port using Tagalog syntax to lower the barrier to coding for non-English speakers.

Markdown-UI

Creator · 28,704 downloads

Framework for responsive HTML5 UIs using Markdown syntax. Used by developers for rapid UI prototyping and documentation sites.

KahelOS

Creator · Linux · Arch-based

First Filipino Arch-based Linux distribution (desktop). Also created Zenith VoIP distro and AMA Desktop Linux for AMA University.

AI Files

Creator · Python · 2023

CLI tool for AI-driven file organization using OpenAI APIs. Automatically categorizes, renames, and organizes files based on content analysis.

CloudArchitect

Creator · iOS · 2019

iPad tool for drawing cloud architectures (AWS, Azure, GCP). Visual diagramming tool for cloud infrastructure design.

PencilPuzzle

Creator · iOS · 2020

iPad app for classic puzzle games using Apple Pencil. Combines traditional pencil puzzles with modern iOS interaction patterns.

Rails Core Contributor

Contributor · Ruby

2-time contributor to Ruby on Rails core — Arel (#3606) and Geokit (#2184) gems. Geolocation and query builder enhancements.

Certifications & Education

Certifications

  • EITCA/AI Artificial Intelligence Programme 2024
  • Certified Linux Administrator (RHEL) 4.38
  • Certified Unix Administrator 4.38
  • Master Javascript 4.34
  • Master Web Design Concepts 4.03
  • HTML5 3.95
  • Web Development Concepts 3.94
  • Bash Shell Scripting 3.66
  • Certified C++ Programming 3.63
  • Certified Linux Programmer 3.64

Education

EITCA Artificial Intelligence Programme

EITCA Academy, Brussels
2024

Advanced Deep Learning (TensorFlow, Keras), Advanced Reinforced Learning, Deep Learning with Python/PyTorch, Google Cloud ML, Google Vision API, TensorFlow Quantum ML.

Computer Science

AMA University, Makati, Philippines
2000 -- 2004

Full scholarship, VP of ITE@CH Student Group, MSCP Certified Professional.

Cisco CCNA 1-4

Cisco Networking Academy, Makati, Philippines
2000 -- 2004

Cisco Network Associate Certification — all four modules completed.

Publications

AWS in Production

Leanpub
2026

Building and operating real systems on AWS: Lambda, API Gateway, DynamoDB, Step Functions, ECS Fargate, and more.

Kubernetes for All

Leanpub
2026

Build a datacenter from scratch with a single 450-line Bash script.

Emacs for Life

Leanpub
2026

Vanilla Emacs to a full IDE with completions, Magit, org-mode, and AI integration.

From Ruby to Golang

Leanpub
2020

A Ruby programmer's guide to learning Go. Ranked #3 on Amazon.

Get in Touch

✉ Email 🔗 LinkedIn 💻 GitHub 📞 +31 (0) 613106364

Amsterdam / Diemen, Netherlands · Dutch Citizen · Available Immediately