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Medior Java developer

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Onsite

Medior Java developer

Outtask

Medior Java developer

Skills

JavaMicroservicesSpring BootKafkaKubernetesTerraformAzure

25 days ago

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Important information


Contract type:

Permanent

Work mode:

Onsite

Published on:

24 September 2026

What they need


Dit bieden we jou.

Salaris

€4.000 - €5.500

Een uitstekend salaris inclusief goede secundaire arbeidsvoorwaarden.

Flexibiliteit

Toe aan wat nieuws? Bespreek je interesses en wensen met je fieldmanager. We zorgen voor passende uitdagingen, zo ben je flexibel zonder het risico van zelfstandigheid.

Echt persoonlijk

Je spreekt regelmatig met je Outtask field manager, niet over prestaties, maar over jou. We willen dat je je goed voelt en helpen ook met privézaken wanneer nodig.

Bonus

Ontvang naast je vaste salaris als gedetacheerde ieder kwartaal een bonus op basis van je gewerkte uren. Wel zo eerlijk.

Mobiliteit

Afhankelijk van je functie krijg je een passende leaseauto, mobiliteitsvergoeding of reiskostenvergoeding.

Werklocatie

Bij ons is flexibiliteit de norm. Dringende deadlines? Privézaken? Afwisseling nodig? Thuiswerken kan, incidenteel of structureel. We stemmen samen een maatwerk aanpak af.

Wat houdt de functie in?

What does the role involve?

You will primarily write code and develop dependable backend services within a modern microservices landscape. Working from the Amsterdam area in a hybrid setup, you will contribute to the design, testing, deployment and continuous improvement of critical applications.

  • You develop and maintain microservices and REST APIs using Java 21 and Spring Boot.
  • You implement event-driven communication between services using Azure Event Hub and Kafka.
  • You deploy and manage applications on Kubernetes, including Azure Kubernetes Service (AKS).
  • You write automated tests with Testcontainers, WireMock, Mockito and MockMvc, including Kafka-based tests.
  • You apply hexagonal architecture, SOLID principles and domain-driven design (DDD).
  • You contribute to infrastructure as code using Terraform.
  • You investigate issues involving communication, consistency, message ordering, retries, dead-letter queues and idempotency.
  • You contribute to monitoring, deployment and rollback strategies within a team of six to eight developers.
  • You share ideas, review solutions and take ownership of improvements from development through to deployment.

Who are we looking for?

You are a Medior Java Developer who enjoys hands-on engineering and is curious about how systems work beneath the surface. You work effectively on your own while actively collaborating with colleagues in a small team and contributing thoughtfully to technical decisions.

  • You have bachelor’s or master’s-level thinking and several years of experience as a Java Developer at medior level.
  • You have professional experience with Java, Spring Boot and building REST APIs.
  • You have an affinity with event-driven systems such as Kafka and Azure Event Hub, including topics such as dead-letter queues, message retries, ordering and idempotency.
  • You have knowledge of, or a genuine interest in, Kubernetes and AKS, microservices architecture, deployments and rollback strategies.
  • You are curious about technical details such as Kafka serialisation and understand the practical challenges of distributed systems.
  • You work independently, while deliberately seeking collaboration and sharing information within a small development team.
  • You already have the right to work in the Netherlands or the European Union; visa sponsorship is not available for this role.

Wie zoeken wij?

Je contactpersoon

Recruiter.

Wouter Prins

Zo word je onderdeel van Outtask.

1

Solliciteer.

(5 min)

Interessante vacature? Open sollicitatie? Open de vacature en vul de basics in. Dat was het.

2

Kennismaking.

Onze recruiters pakken door. Matchen jouw vaardigheden? Dan plannen we een kennismaking in. En hoe dan ook, je hoort altijd van ons.

3

Tweede gesprek.

We duiken dieper in de inhoud. Je krijgt daarnaast alle ruimte om je vragen te stellen.

4

Contractvoorstel.

Is er een klik? Dan ontvang je kort daarna een voorstel dat bij jou past.

Werken bij Outtask.

Outtask is een organisatie waar onze mensen centraal staan. Hier vind je niet alleen uitdagingen, maar ook werkplezier. Met ons ‘Happy People’-principe ondersteunen we zowel de publieke sector als de commerciële markt. Samen met onze 175+ specialisten bieden we expertise binnen IT, Engineering en HR.

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