About Us

The two humans (and one very quiet car) behind Silent Wanderers.

Alexander Edelmann Cristyne Hung

Hola, we're Alex & Cristyne

We're a couple who swapped a fixed address for a rolling one. Alex is German, a lifelong tech geek, solution architect, and full-stack engineer who has spent 20+ years building cloud and IoT systems. Cristyne is from Singapore and a fashion designer—she graduated from LASALLE College of the Arts in Singapore and most recently led fashion products at Heinemann in Singapore for the South-East Asia and Oceania region. She's also our chief adventure planner, photographer, and the reason we always find the best tapas bar in town.

The trip

Together we're exploring Europe and beyond in our Tesla Model Y, documenting the places, the costs, the bureaucracy, and the occasional gale-force balcony wind along the way. We started in southern Spain and we're not in a hurry.

Tesla Model Y Started 29 Dec 2025 Plan 1–2 years

How to follow

@silentwanderers_ Blog Journey map

Alex's work, in short

Results-driven solution architect and full-stack engineer with 20+ years of experience—mostly in Java—building scalable cloud solutions, designing SDKs, and leading cross-regional teams. Happiest where technology meets real business problems (and a good coffee).

Technical toolbox

  • Cloud: Azure, AWS, Google Cloud, Cloud Foundry
  • Languages: Java, Node.js, JavaScript, C#/.NET
  • Architecture: IoT cloud architecture, microservices, GoF design patterns, UML 2.x
  • DevOps: CI/CD on AWS, Azure & Jenkins, Kubernetes, Docker
  • Ways of working: Agile (Scrum, Kanban)

Experience

Freelancer 01/2026 – Present · Jerez de la Frontera, Spain

Custom solution development (Java, Angular, …) and operating those solutions across cloud platforms for high availability.

Solution Architect — Bosch.IO 01/2023 – 10/2025 · Singapore

DevOps of an Azure cloud solution enabling 1,000+ global users to calibrate electric vehicles; used Databricks, Grafana and a time-series DB for vehicle-data analysis and reporting. Led training and change initiatives.

Lead Architect — Bosch.IO 01/2020 – 12/2022 · Singapore

DevOps of an end-to-end IoT cloud solution making data-driven maintenance forecasts for 10,000+ lifts using heuristic AI—cutting service footprint and installation time by >50%. Gateway development in Java OSGi with a Kafka cloud backend.

Open-Source Project Lead & Technical Product Owner — Bosch.IO 2014 – 2020 · Singapore

Led the Eclipse Vorto project, growing the contributor community 5×. Built an IoT Suite toolchain with Eclipse EMF / Xtext, halving device-integration time via SDKs. Collaborated with Google, Microsoft and others on smart-building sensor abstraction.

Software Engineer & System Analyst — Bosch.IO 2006 – 2012 · Singapore & Germany

Built a Java Spring Boot workflow engine for business users and streamlined SOA/EAI projects, cutting costs by up to 70% through model-driven architectures.

Education & languages

  • M.Sc., Furtwangen University, Germany (2001 – 2006)
  • German (native), English (fluent), Mandarin (basic), Spanish (improving daily!)

A couple of highlights

  • AWS Hackathon Winner, Singapore 2016 (augmented-reality IoT use case)
  • Published IoT articles on the Bosch developer portal (e.g. Eclipse Vorto integration)

Cristyne's work, in short

Dynamic senior buyer and fashion professional with 10+ years in procurement, category management, and product merchandising across luxury retail, travel retail, and e-commerce. Proven at driving sales growth, tightening inventory, and launching products that actually move.

Key expertise

  • Category management, procurement & negotiation, inventory optimisation
  • Product development, merchandising planning, and retail analytics
  • Tools: Adobe Illustrator & Photoshop, Microsoft Office, Nav BC, Power BI

Experience

Assistant Purchasing Manager (APAC) — Heinemann Asia Pacific Sept 2021 – Oct 2025 · Singapore

Oversees luxury timepieces and eyewear for South-East Asia and Oceania. Achieved a 70% sales increase vs pre-COVID levels, cut inventory 40%, and mentors assistant buyers. Uses data dashboards to prevent stockouts and coordinates with brands for event-ready deliveries.

Buyer, Travel Essentials (SG & Malaysia) — Lagardère Travel Retail May 2019 – Aug 2021 · Singapore

Managed inventory with sales forecasts; curated assortments and planograms; built promotional calendars. Launched innovative lines for “Discover Singapore” and “Taste of Singapore.”

Buyer, U.S. Marketplace — Yventure Group 2017 – 2019 · Singapore

Selected products from U.S. market trends; negotiated vendor terms; aligned stock with demand forecasts. Collaborated on crowd-funding launches with Fair Leather & Co. and Tocco Toscano.

Product Manager (APAC & Africa), Handbags & Accessories — Bata Shoes 2015 – 2016 · Singapore

Led regional handbags and accessories—80% of regional sales at Q2-16 SRM vs prior year. Developed country-specific SKUs with annual turnover exceeding USD 500k.

Assistant Buyer (E-Commerce) — Joobz International 2014 – 2015 · Singapore

Handled 98 luxury brands across apparel, shoes, handbags, and fine jewellery—online launches, competitor pricing, SEO with IT, and coordinated promotions.

Assistant Merchandiser & Product Designer — Active World (Bonia Group) 2011 – 2014 · Singapore

A/W 2013 handbags collection with Girls' Generation sold out in 2 weeks and boosted seasonal sales 85%. Planned buying budgets, displays, and production quality end-to-end.

Education & languages

  • B.A. Fashion Design, LASALLE College of the Arts & U.K. Open University (2009 – 2010)
  • Diploma in Fashion Design, LASALLE College of the Arts (2006 – 2009)
  • Professional development: Retail Buying, Merchandising Planning (Retail Academy of Singapore); Supply Chain Management (Coursera)
  • English (fluent), Mandarin (advanced), German (basic)

A couple of highlights

  • 70% sales lift in luxury timepieces & eyewear post-COVID at Heinemann APAC
  • Girls' Generation collaboration collection sold out in two weeks (Bonia / Active World)

Full resume (PDF)

Code

A few projects from Alex's GitHub profile—a mix of personal work and contributions to open-source IoT and developer tooling.

jiva on GitHub

jiva

Java

A human workflow engine—letting business users design and run their own processes.

View on GitHub
vorto on GitHub

vorto

Java · IoT

Eclipse Vorto—an IoT device description language and toolset. Alex led this open-source project.

View on GitHub
leshan on GitHub

leshan

Java · LwM2M

An OMA Lightweight M2M (LWM2M) implementation for connecting constrained IoT devices.

View on GitHub
xtext on GitHub

xtext

Java · DSL

A framework for building programming languages and domain-specific languages (DSLs).

View on GitHub
angular-leaflet-directive on GitHub

angular-leaflet-directive

JavaScript

An AngularJS directive to embed and interact with Leaflet maps—the same library powering our homepage journey map.

View on GitHub
Get in touch See more on GitHub