CoinJar – Senior Mobile Engineer


CoinJar is one of Australia’s fastest growing startups and a trusted market leader in the digital currency industry. We build consumer-friendly products with strong focus on security, scalability and usability.

Our Engineering Team is a product-oriented cross-functional team with capabilities in Product Management, Design, Frontend, Backend and Mobile. At CoinJar, you can expect to take ownership in projects from inception and influence the future product directions based on your expertise.

We are hiring a Senior Mobile Engineer who will join our team to develop the next generation of CoinJar mobile apps. CoinJar is one of the first digital currency companies in the world to feature both iOS and Android apps.

You will:

  • Build our next-generation iOS and Android apps with mobile-first experiences.
  • Implement features and bug fixes on our existing mobile apps in the mean time.
  • Constantly think about performance, security and usability.
  • Work with other engineers, product manager and company management to deliver our product vision and roadmap.


Essential Requirements

  • You have at least 3 years of experience in software engineering in at least one of Objective-C, Java, Swift or Kotlin.
  • You’ve previously built a reasonably complex native mobile app published in the App Store or Play Store.
  • You’re passionate about building FinTech products for everyday consumers.

Nice to have

  • You have made contributions to open source projects.
  • You have a strong UX design background.


  • We are a team of creative and passionate people working to solve challenging engineering problems. We listen to customers, and ship code frequently.
  • You’ll get a laptop on your first day with your preferred configuration. We use macOS or Linux.
  • We have a flexible hours system and you also have the option to work from home 0-2 days a week.
  • We offer employee equity in addition to your base salary, with some of the most generous terms in the market.
  • Fee-free trading on CoinJar!

See for more info or to apply.

Blockchain Developer – Manly

Software Developer in Blockchain (permanent)

I am looking at bringing on board a blockchain software engineer. This role is based in Manly.

This is a rare opportunity for a developer to join the fastest growing sector within IT, be part of the blockchain team, and master the use of the latest cutting-edge technologies.

This role is suited to a person whom is intellectually curious, and stimulated by learning and experimenting with a range technologies related to blockchain. You will be open-minded working with various technologies, and passionate about delivering high quality products. Excellent opportunities of growth within the organisation. We are starting a project with the aim to create a completely new blockchain protocol.

You will be a passionate developer, with at minimum experience with;

  • 2+ years of software development
  • Commercial use of JavaScript
  • Object oriented programming
  • Knowledge of JavaScript Frameworks (Node, Angular or React preferable)
  • Use of database technologies (SQL and NON-SQL)
  • Intellectually curious and passionate about the latest technologies

Qualifications and Skills

  • 2+ years of software development
  • Blockchain experience (Solidity, Web3.js, smart contracts etc)
  • Commercial use of JavaScript
  • Object oriented programming
  • Knowledge of JavaScript Frameworks (Node, Angular or React preferable)
  • Use of database technologies (SQL and NON-SQL)

Please get in touch via email –

Scam Alert: The Complete Guide to Bitcoin Scams

While bitcoin has seen a sudden price rise, unfortunately so has the number of scammers taking advantage of the positive in market conditions. While scammers are not new, in an highly unregulated market they thrive in taking on opportunities of those of us who are less informed, on the state of the players in industry.

We here at Blockchain Australia, feel the need to inform the general public of relevant news and those who are less than honorable people and organisations operating in this space. Which is unfortunate as they have contributed to the bad rap and press in the media of those who are doing great work in this industry. We have started a new segment to highlight reported scams known in this industry. Please check back to make sure you are informed on what is happening in the bitcoin community.

There are many different types of ways scammers can operate in this industry. Freelance writer Suraya Zainudin has put together a useful guide ‘The Complete Guide to Bitcoin Scams‘ that can give you an insight to avoiding possible fraudulent situations. But as always it is important to always be vigilant and do your own research. If something is too good to be true, it is very likely you should pay attention to your instincts, as that is likely to be the case.