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Tech Lead (Java/Kotlin) API Team



Software Engineering
Posted on Saturday, July 8, 2023
Tech Lead (Java/Kotlin) - API Team at Rarible
🚀 Join Us in Pioneering the Web 3 Era
We're actively shaping the future by developing robust infrastructure, bridging gaps, and crafting solutions to benefit global communities.
🛠 Role Overview
Our Rarible API Protocol serves as a comprehensive toolkit for web3 developers, enabling them to craft rich NFT applications, trade NFTs safely, and garner consistent data about NFTs. As our Tech Lead, you'll spearhead the development of backend services, indexing data from the blockchain and external sources into our internal database.
The challenge: Ensure the security and scalability of our API while meeting all SLAs, SLOs, and surpassing our competitors.
Tech stack is: Kotlin, Spring, MongoDB, Kafka, Kubernetes, Elastic Search.
** Ideally this person would be open to hybrid working at our office in Lisbon, but we are also open to candidates in Europe who wish to work remotely**

💼 What's On Your Plate?

  • Design: Take the reins in designing the core Protocol service components.
  • Develop: Design and implement core features that align with the business requirements.
  • Optimize: Supervise and refine our existing systems for peak performance.
  • Monitor: Keep a vigilant eye on systems, identifying potential hitches and addressing them proactively.
  • Promote: Champion the very best in technology and software development practices.
  • Review: Conduct code reviews to maintain the quality and ensure best practices.
  • Architect: Play a pivotal role in sculpting the API structure.

🔧 Skills We Admire:

  • Micro Mastery: A profound understanding of Microservices architecture.
  • Code Savvy: Expertise in Kotlin (Java) for crafting microservices.
  • Tech Tools: Experience with MongoDB and Kafka.
  • API Artistry: Demonstrated experience in building robust, scalable, and customer-centric APIs.
  • Remote Work: Proven success in remote and globally distributed startups.
  • Agility: You're nimble, able to adapt to changing priorities and deliver swift solutions.
  • Self-Drive: A proactive mindset, capable of owning and executing company priorities with minimal supervision.

Why should you join:

  • At Rarible, we are committed to building a better internet for everyone, and we believe that Web 3.0 is the key to achieving this goal. We believe that the next generation of the internet should be decentralized, transparent, and accessible to everyone.
  • This means that users should have full ownership of their data and be able to control how it is used. Our team at Rarible is comprised of experts in cutting-edge technologies, and we are constantly expanding our knowledge and skills to stay ahead of the curve. We are committed to creating a culture of learning and growth, where our team members can explore new ideas and take on new challenges. We believe that diversity is a strength, and we welcome team members from all backgrounds and walks of life.


  • Full-time role with a hybrid Hub policy in sunny Lisbon, Portugal
  • Relocation packages available
  • Unlimited paid days off policy to own your own R&R
  • Stock options and RARI Token grants
  • Hardware and software support
  • Tuition reimbursement program to support your professional development
  • We are passionate about what we do and care deeply about our product. We are committed to creating a culture of learning and growth, where our team members can thrive. If you are interested in joining us on this mission, we would love to see you on-board!