Stefan van den Akker
Senior Software Engineer

With almost 12 years of experience in crafting robust back-end systems for e-commerce, I specialize in designing and implementing RESTful microservices using Spring Boot and JVM languages (Java, Kotlin, Groovy). I’ve also worked with Go and would love to use it more. I'm passionate about cybersecurity. I thrive in independent work environments where I can focus deeply on solving complex problems.

Senior Software Engineer

Bol.com is the largest online retailer in the Netherlands with over 17 million customers. I spent the last 7 years in a security team, responsible for secure authentication of customers and partners and GDPR compliance automation.

• Create secure authentication using OAuth 2.0, TOTP/HOTP, passwords, encryption
• Design, implement, maintain, extend and tune scalable microservices exposing RESTful APIs using Java/Kotlin (Spring Boot) and Go
• Deploy Java/Kotlin/Go containerized applications in data center VMs and Kubernetes (GCP)
• Monitor (ELK stack and Prometheus/Grafana) applications for performance and security
• Create, maintain and tune PostgreSQL and MongoDB databases
• Create and optimize CI/CD pipelines in Gitlab CI
• Apply TDD to ensure correctness and prevent regressions

Software Engineer

ECI was an e-commerce website running on the Intershop platform. I mostly wrote Intershop-related Java code.

• Interact with remote clients using SOAP and REST
• Implement client-side functionality using JavaScript and jQuery
• Create Bash and Groovy scripts to help tackle repeating developer tasks
• Set up Git repositories
• Create Gradle build scripts

Junior Software Engineer

I was trained as a Java software engineer in a trainee program.

• OCAJP (May 2015)
• OCPJP (August 2015)

• IB1802 - Security and IT
• IB0702 - Computer Networks
• IB0402 - Logic, Sets and Relations
• T34141 - Object-Oriented Analysis & Design (OOAD)
• T58221 - Web Applications: the Client Side
• T37141 - Model-driven Development
• T14161 - Relational Databases
• IB0202 - Introduction to Information Science
• T28141 - Introduction to Computer Science

Java Kotlin Groovy Spring Boot REST / HTTP Bash Git Docker

Go Python Postgres MongoDB Messaging (Pub/Sub)

Kubernetes Gitlab CI GCP

• Dutch Native speaker
• English Fluent
• Russian Fluent

Nature Mountains