EV charging platforms
Roaming, charge cards, charge point data, tenant onboarding, and mobility services.
JVM backend services
Scala and Kotlin services with typed APIs, effectful systems, and pragmatic architecture.
Live migrations
Controlled production migrations across data stores, services, infrastructure, and vendors.
API integration
HTTP APIs, service boundaries, third-party integrations, and operational reliability.
Profile
Senior Software Engineer with extensive experience designing, building, testing, and modernising JVM backend services across EV charging, online classifieds, location data, payments, and telecoms. Strong analytical and problem-solving skills, with deep Scala experience and a preference for functional programming on the JVM. Self-reliant in unfamiliar technical areas, quick to learn new technologies, and pragmatic about using the right tools to deliver reliable production systems.
Work
Accomplishments
Adevinta
Large-scale image platform migration
Helped deliver an on-time production migration from a legacy in-house image service to a cloud platform, moving hundreds of millions of images and database records through a controlled phased rollout.
Vandebron / NewMotion / Shell Recharge
EV charging platforms and roaming services
Built and led backend services that expanded EV roaming coverage, supported charge card integrations, exposed real-time charge point data, and enabled B2B mobility providers to offer EV charging.
eBay Classifieds Group
High-volume database migration
Migrated a high-volume backend service from MySQL to Cassandra while keeping the service live with dual-writes, dual-reads, and staged rollout across hundreds of millions of records.
TomTom / Vandebron
JVM service modernisation
Modernised Scala services across runtime and library versions, replaced ageing dependencies, and created shared Tapir, ZIO, and http4s foundations used as reference implementations by other teams.
Companies and roles
Company
Adevinta
Senior Software Engineer
Adevinta is a global online classifieds specialist.
- Helped deliver a live migration from a legacy in-house image service to a cloud-based platform.
- Moved hundreds of millions of images and database records through a phased, step-by-step process.
- Kept implementation aligned with an existing technical design so the transition stayed controlled and predictable.
- Used AI coding assistants pragmatically for codebase exploration, implementation planning, refactoring support, and review preparation.
- Delivered the migration on time, moving the service to more scalable and maintainable infrastructure.Scala / AWS / Fastly / Elasticsearch / cloud migration / live migration
Company
Vandebron
Senior Software Engineer
Vandebron supplies 100% renewable electricity directly from local producers to consumers.
- Built JVM services and APIs that onboarded third parties as tenants for EV charge points and charge cards.Scala / Akka / HTTP APIs / OpenAPI / Swagger / Elasticsearch
- Created shared Tapir, ZIO, and http4s foundations that enabled teams to move services away from Akka after its licensing model changed.Scala / Tapir / ZIO / http4s / Akka migration / shared libraries
- Built backend services that brought Vandebron's charge card roaming platform in-house and expanded charging coverage across Europe.Scala / ZIO / Tapir / http4s / HTTP APIs / service integration
- Migrated Vandebron's charge point estate to third parties as part of a business-led shutdown of charge point operations.Scala / JVM service design / service integration
Company
TomTom
Senior Software Engineer
TomTom develops maps, navigation software, and location technology.
- Modernised a Scala service across major runtime and library versions, updating dependencies and replacing unmaintained libraries to keep the service maintainable.Scala / Akka / library migration / dependency management / HTTP services
Company
eBay Classifieds Group
Senior Software Engineer
eBay Classifieds Group was a world leader in online classifieds.
- Led a Scala integration project that migrated the marketing department to Adobe Campaign Manager.Scala / Monix / service integration / PGP
- Migrated a high-volume backend service with hundreds of millions of records from MySQL to Cassandra while keeping the service live.Scala / Cassandra / Thrift / live migration
Company
NewMotion / Shell Recharge
Senior Software Engineer / Team Lead
NewMotion was a European EV charging company, later rebranded as Shell Recharge Solutions.
Led the technical direction and development of JVM backend services that enabled EV drivers to charge across a broad international roaming network.
- Aggregated real-time data from multiple charge point operators and served it to mobile clients.Scala / HTTP APIs / real-time data
- Built backend APIs that allowed drivers to start and stop charging sessions from the mobile app and view live session information.Scala / HTTP APIs / mobile services
- Designed B2B services that enabled other mobility card providers to offer EV charging through NewMotion's roaming network.Scala / B2B APIs / roaming services
Company
PrePay Solutions
Software Engineer
PrePay Solutions was a prepaid payments provider specialising in stored-value card solutions.
- Developed a web-based configuration tool that allowed non-technical users to manage stored-value card setup.Java / Spring / JavaScript / jQuery
Skills
JVM
Java, Scala, Kotlin, JVM service design, library migration, dependency management, ZIO, Monix, Tapir, Akka, Pekko, http4s
Backend APIs
REST APIs, HTTP services, OpenAPI, Swagger, API design, service integration, Thrift
Databases
PostgreSQL, MySQL, Redis, Cassandra, CockroachDB, Elasticsearch
CI/CD
Docker, Kubernetes, GitHub Actions, Jenkins, TeamCity, HashiCorp stack
Cloud / Edge
AWS, Fastly
Messaging / Events
Kafka, RabbitMQ, EventStore
Testing
unit testing, integration testing, Testcontainers, Mockito
Observability & Tooling
Git, Grafana, Datadog, Kibana, Logstash, Graphite, Claude Code, Codex
Functional Programming
typed APIs, effectful services, immutable data, composable domain logic
Contact
Get in touch
Available for freelance work in the Amsterdam area, Netherlands, on a hybrid basis, or fully remote. Use the form and I will reply directly.