Senior Kotlin Consultant

What You'll Do

Does code hold no secrets for you? Are you the go-to expert among your colleagues and do you naturally take the lead by setting the right example? Become a Senior Kotlin Consultant at iO and build exceptional applications for top brands like Bol, Jumbo, KLM, Port of Rotterdam, and Rabobank.

As a Senior Kotlin Consultant, you'll work within the in-house teams of leading brands. With your in-depth knowledge and experience, you take the leading role in project teams and serve as the primary point of contact for clients. They rely on your code, vision, and input as a senior developer. But it doesn't stop there: you elevate other team members to a higher level by guiding, motivating, and inspiring them to excel.

You ensure that projects are not only technically solid but also contribute maximally to your clients' business objectives. From concept to impact: you're involved in the entire journey.

Your team & development

You don't just work at the client site—you remain closely connected with your iO colleagues. At least once a week, you come together to catch up, share knowledge, and learn from each other. You'll join a team of experts who will advance your career.

At iO, you get both time and budget to develop yourself. Attend training courses, workshops, and certifications. Or give presentations yourself, write blogs (check out our Techhub), and contribute to the Open Source community. We stay ahead by participating in numerous events, conferences, knowledge sessions, and high-level meetups.

Your Qualities And Skills As Senior Kotlin Consultant

• Minimum 5 years of work experience as a Kotlin Developer
• Experience working with and at enterprise organizations
• Solid experience with Kotlin, Spring Boot, REST, integration testing, and Microservices
• Database knowledge of SQL and/or NoSQL
• Knowledge of Google Cloud Platform (GCP) or Amazon Web Services (AWS). Kubernetes and Docker is a plus
• Experience with CI/CD, AI tooling, accessibility, Kafka, NodeJS, or other back-end languages/frameworks is a plus
• You enjoy coaching developers in their technical and soft skills and naturally take the lead
• You speak fluent Dutch and/or English
  
  

What Makes You Strong

You're more than a developer. You're a sparring partner for clients, a mentor for colleagues, and a thought leader in your field. You see opportunities where others see challenges, and you take initiative to capitalize on those opportunities. With your hands-on mentality and sharp technical insight, you elevate projects to the next level.

What’s in it for you

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25 vacation days

Based on a 40-hour work week.

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Travel expenses & holiday pay

Of course, you can count on 8% holiday pay. In addition, we offer various mobility schemes for you to choose from, depending on your role and preference.

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Good pension plan

You contribute 4% and iO will supplement the rest up to the full premium.

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Hybrid working

A good work-life balance is super important. Together with your team, you’ll decide when and where you work.

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Healthy snacks & lunch

At every iO campus, you can grab a healthy snack throughout the day and have a healthy and varied lunch for a small fee.

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Personal training budget

Each year, you’ll get a budget of €3,000 to develop yourself, in your profession or as a person, through training, events, or courses.

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Celebrating together

If there’s something to celebrate, we know how to party! From time to time, the party team at your campus will organise the best (theme) parties.

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