Mentor vacatures in Haarlem

Qualogy

Senior Java Developer (Java 21+, SpringBoot, Domain Driven Design)

Waarom Werken bij Qualogy?

Senior Java Developer (Java 21+, SpringBoot, Domain Driven Design)

Only applications from fluent Dutch-speaking candidates will be considered.

For our client in Amsterdam, we are looking for a Senior Java Developer (Java 21+, SpringBoot, Domain Driven Design)

In this position you will be at the heart of our scalable technology platforms, being accountable for delivering common banking functionalities used in most of the propositions that our client offers to its customers. You will be working on the system.

Roles and responsibilities

You will be working in a squad responsible for the end-to-end customer journey. You own the stack and the journey! The average squad consists of engineers, customer journey experts (CJE) and a product owner.

Collaborate with the Product Owner, CJEs and Engineers to interpret business requirements and deliver features with real business value

Foster a collaborative team environment and actively learn from your colleagues

Influence technology choices and contribute to the architecture of newly developed components and services

Review code meaningfully - focusing on the business and high level

Tech environment

Java 21+, Spring Boot, Kafka, Cassandra, Azure SQL, Prometheus, Grafana, ELK, Git, CI/CD pipelines, Hexagonal Architecture, Domain Driven Design, Cucumber, Monorepo, Maven

How to succeed

We hire smart people like you for your potential. Our biggest expectation is that you'll stay curious. Keep learning. Take on responsibility.

Must have:

Experience with Java 21+ and Spring Boot

Experience with Domain Driven Design & Hexagonal Architecture

Strong interpersonal communication skills

Experience in mentoring colleagues

Key Role Requirements/Must-Haves -

-Senior Java Engineer with ~8-15 years of experience

-Strong experience with the JD tech stack, including Java 21+ and Spring Boot, DDD and modern backend architectures

-Experience with monitoring, reliability, CI/CD pipelines, and production operations

-Active, collaborative, and stakeholder‑focused, able to work closely with PO, CJEs, and engineers

-Coaching and mentoring experience within engineering teams

-Strong ownership mindset, accountable for services, processes, and end‑to‑end delivery

Nice to have experience with:

Infrastructure and DevOps tasks (e.g. Azure, pipelines, certificates)

Kafka & Cassandra

Observability technologies - Prometheus/Grafana/ELK

Stand-by shifts

Business critical systems, such as client processes, payment processes, software applications and websites, require a 24/7 accessibility and availability of several (groups) of employees to act quickly during unforeseen circumstances, such as calamities or incidents. For these (groups) of employees our clint have set up a Stand-by regulation. To compensate for the inconvenience of being available at this time, a Stand-by compensation is awarded.

For this role you will be designated for stand-by shifts and you need to be available for incidents outside of your regular working hours, a Stand-by compensation is awarded.

Stand-by shifts occur approximately 3-4 weeks per year. You'll be compensated and supported with clear escalation procedures.

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Lange Kleiweg 6, 2288 GK RIJSWIJK (Z-H) The Netherlands

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