Senior Java/Kotlin Developer

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Join the Future of Work Malt is Europe's leading freelance marketplace, connecting over 1,000,000 talented freelancers with 100,000+ companies. Founded in 2013, we're transforming how work gets done through our tech-powered, human-centered platform. What makes us different:

- A diverse team of 600 Malters across 6 European countries

- A culture that champions equality (50% of our Comex are women) and inclusive growth

- Backed by top investors including ISAI, Serena Capital, Eurazeo Growth, Goldman Sachs, and BPI

- A mission to give everyone the freedom to work differently

Ready to help shape the future of work? Your next chapter starts here

Key responsibilities

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• Collaborative Product Leadership: You'll establish a strong partnership with Product Managers and Designers to translate user needs into innovative technical reality. You thrive in the creative process, confidently challenging ideas and co-creating elegant solutions that directly solve end-users problems.

  
  

• Take the lead: You’ll own your features end-to-end. From first sketch to release (and beyond). You’re empowered to make decisions and trusted to do what’s right for the product.

  
  

• Build smart, ship fast: We deploy to production around 70 times a week. You’ll help us keep that rhythm by balancing speed, quality, and business impact.

  
  

• Be a partner: You bring strong opinions, backed by experience, and you’re not afraid to challenge the status quo when it makes sense.

  
  

• AI-Augmented Craft: You are curious about (or already using) tools like Cursor, Gemini or Claude Code. You see AI as a pair-programming partner that accelerates delivery while you maintain the "human-in-the-loop" for quality and strategy.

  
  

• Knowledge Multiplier: As a senior, you’ll help the team navigate this new AI landscape. You’ll share best practices on prompt engineering, AI-driven refactoring, and maintaining a high "quality bar" in an automated world.

  
  

Our Tech Stack

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• Frontend: TypeScript, Vue.js, Nuxt, Internal Design System, Stencil.js

  
  

• Backend: Kotlin, Java Spring Boot, Gradle, PostgreSQL, MongoDB, Elasticsearch, RabbitMQ, Redis

  
  

• Platform: Google Cloud Platform, Kubernetes, Terraform, ArgoCD, Gitlab CI

  
  

• The AI Toolkit: We empower our devs with modern AI coding assistants and are building internal workflows and investigating as many uses as possible (docs, unit tests, migrations)

  
  

• Data: BigQuery, dbt, Looker, Spark, Python

  
  

About you

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• Bring 6+ years of professional software development experience, including a first role within a product company (SaaS, fintech, marketplace, etc.)
  
• Demonstrate deep proficiency in Java or Kotlin, with confidence in navigating complex backend architectures, APIs, and data models.
  
• Product-First Champion: You think beyond the code, driven by curiosity about the user's "why." You proactively propose improvements and champion end-to-end feature ownership from conception to delivery.
  
• Pragmatic Architect: You drive architectural decisions, leveraging patterns like Hexagonal Architecture for modularity and testing. You skillfully balance long‑term scalability with the need to iterate quickly
  
• AI Empowerment: You view AI as an accelerating force, effectively delegating routine tasks to tools while remaining the strategic "Pilot" responsible for quality, integrity, and preventing architectural drift.
  
• Full Lifecycle Stewardship: You maintain stewardship over the entire feature lifecycle. From building CI/CD and testing to ensuring observability and monitoring. Shipping is just the start; you are dedicated to quality, longevity, and scalable performance.
  
• Fluent in English, you are comfortable speaking and writing in an English-speaking environment.
  

How to join the mission?

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• Screening with Alex, our Talent Acquisition Manager, to better understand your background, aspirations and answer your questions (45 minutes)
  
• Interview with one of our Engineering Manager, to discuss your experience and the role in more detail (75 minutes)
  
• Technical assignment (homecase or livecase, you choose) to prepare and present in order to evaluate your hard skills (90 minutes)
  
• Final interview with Jean (VP Engineering) to discuss Malt’s long term vision (45 minutes)
  

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