Full Stack Developer Intermediate

The Opportunity

We are searching for a talented Intermediate Full Stack Developer with solid backend and cloud experience (ideally 2-5 years full stack) to join our small team of six . If you enjoy variety in your work, have experience outlined below, take pride in building solutions and thrive in an environment where communication and collaboration are valued just as highly as technical ability, you'll fit right in.

This role gives you the chance to work across our entire TypeScript-based stack. You'll take ownership of backend services, cloud infrastructure, and contribute to our front-end codebases. You'll have room to shape how things are built, make meaningful architectural decisions, and continuously improve the developer experience alongside a supportive, skilled team.

We're a small, tight-knit team of hands on developers who care deeply about writing great code, building reliable systems, communication and working collaboratively. We all contribute across the full stack and we back each other up every step of the way.

What You'll Be Doing

• Build and maintain reliable backend systems using TypeScript and
• Design and support scalable cloud infrastructure on AWS (Lambda, API Gateway, S3, DynamoDB, RDS).
• Manage infrastructure as code using modern tools (Pulumi, SST, or CDK).
• Develop and refine CI/CD pipelines that keep deployment fast and safe.
• Contribute to our front-end projects built with React, Remix, and Tailwind.
• Write clean, testable code with Vitest or Jest, and help keep quality high across the stack.
• Collaborate closely with your teammates to design, problem-solve, and deliver great outcomes.

What You'll Bring

• 2–5 years of full-stack development experience.
• Strong backend development skills using TypeScript and
• Proven experience working with AWS or an equivalent cloud provider.
• Confidence managing infrastructure as code.
• Solid understanding of TypeScript build tools (esbuild, vite, tsup, webpack).
• Experience building CI/CD pipelines.
• A focus on code quality and testing best practices.

Nice to Have

• Experience with GitHub Actions for automation.
• Exposure to Pulumi or AWS CDK.
• Front-end experience with React, Remix, , or Tailwind.

Tech Stack

• TypeScript throughout the stack
• React (Remix, Tailwind) for front end
• (pnpm) for backend
• AWS (Lambda, API Gateway, S3, DynamoDB, RDS) for infrastructure
• Pulumi, SST, CDK for IaC
• GitHub Actions for CI/CD

What We Value

• Engineers who are curious, collaborative, and practical.
• Strong communicators who share ideas clearly and listen actively.
• People who take ownership, work autonomously, and deliver high-quality results.
• A willingness to learn, adapt, and help others do the same.
• Alignment with our mission and values — building simple, robust solutions that make a difference.

Why You'll Love Working Here

• You will get 6 weeks annual leave
• 10% KiwiSaver Employer Contribution
• Great remuneration package with fair pay philosophy
• Parental package
• Southern Cross Health Insurance
• Free Auckland public transport via HOP card
• Lunch once a week with the wider team where we support local eateries
• Counselling services, fun team events, regular drinks
• A team that genuinely supports one another and values open communication.
• The freedom to work across the stack and grow your technical depth.
• Exposure to modern technologies and AWS architecture at scale.
• Hybrid working – enjoy flexibility while staying connected in our Takapuna office.
• A balanced, down-to-earth culture where your ideas and initiative are welcomed.

About Simplicity

Simplicity is one of the country's fastest-growing KiwiSaver providers, managing more than $9.6 billion in savings and investments.

From our humble roots as a kitchen table start-up in Devonport in 2016, Simplicity now has over 177,000 members. Our members love us, and we love them %)

We are one of six government appointed KiwiSaver default providers. As a non-profit social enterprise, Simplicity has a unique model that charges super low fees and supports charity.

We exist to make our members wealthier and to do good. With 15% of management fees going to charity, the Simplicity Foundation has given away more than $11.9 million to date to support charities that benefit New Zealanders, and NZ natural resources, at risk.

We are also keen to grow investment into low-cost 1st home mortgages for our members and the development and operation of affordable long term rental housing through our related entity, Simplicity Living.

We have plans to keep improving our range of innovative investments, products and services, wherever possible making a positive social impact. We are only as good as our people and our team are all dedicated, passionate about our mission, and love working in a flexible, collaborative, empowering and dynamic environment.

How to Apply

If this sounds like you, we'd love to hear from you.

Send through your CV and a short cover note about what motivates you as a developer and why you would like to work with us — and let's have a chat.

Please only apply if you have NZ citizenship, residency or a valid long term (3 years min) NZ work visa.