Nine25 logo

Senior Back End Developer

We're about to re-launch a brand new version of our mobile app and one of the most exciting transformational changes Australia's workforce will ever experience.




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115k-129k USD

We're about to re-launch a brand new version of our mobile app and one of the most exciting transformational changes Australia's workforce will ever experience.

We need a vital team member to deliver the vision of our subsequent significant releases. You will work directly to maintain and build a highly scalable platform as we grow our Australian and global user base.

Our engineering team builds and deploys rapidly as we scale for growth to reach wide market adoption in Australia and overseas.

You'll work directly with the founding team to continuously deploy and react to a fluid growth strategy that will require your direct strategic design input. This role has tremendous growth potential and provides a chance to gain meaningful ownership in a high-growth social impact startup.

What we're looking for

We're keen to work with competent Senior Developers with excellent communication skills that enjoy breaking new ground solving challenging problems. You should also expect to:

  • Leverage native APIs for deep integrations across all platforms.

  • Diagnose and fix bugs and performance bottlenecks for performance.

  • Reach out to the open-source community to encourage and help implement mission-critical software fixes.

  • Maintain code and write automated tests to ensure the product is of the highest quality.


  • Are flexible and thrive working across different languages and technologies (e.g. React, NodeJS, TypeScript, JavaScript, AWS, GraphQL).

  • Firm grasp of the JavaScript language and its nuances, including ES6+ syntax

  • Knowledge of functional and object-oriented programming

  • Ability to write well-documented, clean Javascript code

  • Rock-solid at working with third-party dependencies and debugging dependency conflicts

  • Understanding of GraphQL, the document request model, and offline storage

  • Experiences with automated testing suites, like Jest or Mocha

  • Forensic attention to detail.

Ideal technical experience

  • NodeJs

  • Microservices

  • Lambda Functions

  • TDD and Automation testing

  • GraphQL / AppSync

  • Rest API

  • S3

  • DynamoDB

  • CloudFormation and CDK

  • Schema Modeling

About this role

February 12th, 2022

January 13th, 2022

Full Time

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115k-129k USD

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About Nine25

Learn about Nine25 and their company culture.

View company profile

Nine25 is a salary streaming app that allows you to spend, manage and invest your money. You can Stream your Salary, which means that you can link the app to payroll (or any income source, HR or gig platform) and get your money in real-time as you earn it.

We're also releasing features such as Bill Streaming, where we automatically allocate drips of your income to put towards your bills and expenses and be paid from within the app.

Users will enjoy automated investments into equities, ETFs and cryptocurrency purchases to build wealth. On top of that, we calculate Safe Spend, which reflects how much money a user can safely spend after all their expenses, one number that automatically adjusts as you send, spend or invest while accounting for real-time earnings.

Our mission

Technology is progressing rapidly, and our lifestyles are thriving because of it. The financial world, on the other hand, is lagging.

Compared to our fast-paced, quick access way of living, the ancient idea of a 'Pay Day' is becoming harder to comprehend. So why do we still wait up to a week, a fortnight or even a month for our pockets to replenish and our freedoms to carry on?

We want to have live access to our pay as we earn it. We stream movies, tv shows, music - we even stream our personal lives online. It's time we are able to do the same with our money.

Managing finances is tricky - on your own. Nine25 has the financial know-how, and we believe financial freedom is possible for everyone, so we are building the technology to enable it.

Our values

Be responsible.

We don't believe in profiteering at all costs, and we are not about young adults being shoved toward a lifetime of debt and repayments.

We believe financial freedom is possible for everyone, so we build the technology to enable it.

Drive positive outcomes.

This is why we do what we do.

At the heart of every decision we make, now and in the future, are our users and the world's wellbeing.

From the logic that powers our money management algorithm to our users spending sustainably, we at Nine25 want to positively impact our users, stakeholders, employees, and the planet.

We keep it simple.

We make finances manageable to the everyday person offering peace of mind and seamless integration of Nine25 into your lifestyle.

Tech stack

Learn about the technology and tools that Nine25 uses.

View tech stack
Financial Services



Leigh Dunsford

Icons/design/feather/country/au Australia
Icons/design/feather/country/fj Fiji

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