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Senior Backend Engineer

@ Ark



Contract Typepermanent
Experience Level5Year (s)
Required Skills:

More Info:

About the Senior Backend Engineer Role

Here’s What We’re Looking For

Required Experience

  • 5+ years of professional JavaScript/TypeScript development experience, with at least 3 of them being hands-on with Node.js on Medium-to-Large Applications.

Required Skills

  • Programming languages: JavaScript / TypeScript
  • Frameworks: Node.js, Hapi, TypeORM
  • Databases: PostgreSQL, SQLite
  • Patterns & designs: SOLID, DDD, TDD, KISS, DRY
  • Languages: excellent English communication skills (written as most of the communication is done via Slack).


  • Working on and enhancing the Core blockchain framework as well as working with and offering support to a cross-functional team who are building applications/products that interact with the protocol.
  • Designing, building, auditing, testing and maintaining efficient, reusable, and reliable code; as well as helping maintain code quality and organization standards..
  • Identify bottlenecks and bugs in our codebase, and devise solutions to mitigate and address these issues
  • Write, develop and implement specifications (improvement proposals) to improve and enhance the codebase or its functionality.
  • Working with internal development teams reporting up to a Project Lead where required
  • Developing libraries and platforms for use and deployment by application developers


  • Previous experience in Blockchain development would be preferred
  • A strong understanding of engineering principles and processes aimed at developing simple, modular and high-quality code is desired
  • Good understanding of P2P networking and protocols. Experience with distributed systems and protocol design would also be a plus.
  • In-depth understanding of algorithms and data structures
  • Knowledgeable on the cryptographic principles of Blockchain technologies, with a good understanding / experience of cryptography (ECDSA, SHA256, Schnorr) would be favoured
  • An advanced/intermediate understanding of the V8 engine, specifically within Node.js (how does A affect B, what performance repercussions can X have, identify performance bottlenecks, etc…)

What Makes You a Good Fit

As well as your development skills there are certain qualities that will make you the perfect fit for life here at ARK. Qualities such as:

  • Commitment — Innovation takes time. We’re looking for a long term commitment here. Someone that we can rely on to take a project from initial plans to launch and beyond. If you’re looking for a role where you can grow, learn and work on projects that really make an impact then you’re exactly the kind of person we’re looking for.
  • Dedication, Drive, and Trustworthiness — As a team on the cutting-edge of innovation we’re looking for self-starters. We like those who enjoy using their initiative to solve problems, come up with ideas, help streamline processes and generally just get stuff done. We don’t micromanage, so we’re looking for someone that’s motivated to take charge of their own workload and deliver on their objectives.
  • Team-Orientated — At ARK we’re one big family, so bringing in someone new means making sure that they’re a good fit for our team. We’re looking for someone that’s team-orientated and that works well with others. This also means getting involved with all projects and taking on any task that might come your way.

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