Full Stack Software Engineer - Smartly

Smartly Full Stack Engineer

A bit about Smartly, a Datacom company

We exist to make it simpler for Kiwi businesses to look after their people. We’re known as the simple way to sort your payroll for over 20,000 businesses. Our slick software, combined with our awesome support team, helps businesses pay their people on time, accurately and in line with legislation. As a fast-growing FinTech expanding into adjacent markets, Smartly offers a fast-paced, fun work environment with great opportunities for personal and professional development.

About the Role (your why)

As a Full Stack Engineer, you will work on our Smartly Payroll System. Smartly is a SaaS Online Payroll Product helping more than 20,000 clients to with their payroll needs. Our ideal candidate will have at least 2 years of experience working on the front end and back end; also have a strong ability to solve problems, design & write clean code; and mentor junior engineers.

What you’ll do

· Owning the day-to-day delivery of assigned work, including clarifying feature-level ambiguity, managing tasks effectively, supporting release, and verifying outcomes in production.

· Contributing to team-owned delivery by giving realistic input into effort, raising risks or blockers early, communicating progress clearly, and helping the team deliver work predictably.

· Contributing to team-owned quality through appropriate testing, code review participation, safe change practices, and disciplined attention to correctness, maintainability, security, and performance.

· Using modern tooling, automation, and AI-assisted development in a practical and controlled way to improve delivery efficiency, feedback loops, and code quality while remaining accountable for the output.

· Supporting less experienced engineers through constructive collaboration, review feedback, and strong day-to-day engineering practice.

What you’ll bring

· 2+ years’ experience working on IT projects across multiple phases of the SDLC.

· Recent C# .NET experience with at least 2 years of .NET development.

· Experience with web front-end technologies, including HTML, JavaScript, CSS, React, or ASP.NET Razor.

· Good understanding of software architecture, design patterns, SOLID principles, and object-oriented programming.

· Knowledge of software configuration management using tools such as Git.

· Familiarity with service-oriented frameworks.

· Ability to implement features, unit tests, and fix complex bugs.

· Excellent communication skills, with a strong focus on helping create cohesive, collaborative, and productive teams.

· Strong problem-solving and conceptual thinking skills.

· Public cloud exposure (Azure) is a bonus.

Culture and benefits

Join a team where you'll be supported to grow your career, prioritise your wellbeing, and make a genuine impact. From industry-leading learning and development opportunities to parental leave, wellbeing support, and employee benefits, we're committed to helping our people thrive both professionally and personally

We're passionate about creating a workplace where people feel supported, empowered, and inspired to do their best work. Whether you're developing new skills, tackling complex challenges, or collaborating with some of the best minds in the industry, you'll be part of a team that values curiosity, innovation, inclusion, and making a genuine difference.

Why you will love working here

• Flexible and hybrid working options (only include if applicable)

• Paid parental leave

• 24/7 Employee Assistance Programme (DataCare)

• Ongoing learning, certifications, and career development opportunities

• Access to industry-leading learning platforms and future skills training

• Recognition programmes that celebrate great work

• Great employee discounts and financial wellbeing benefits

• Meaningful work that makes a real impact

Why Smartly?

We're a team of smart, curious, and passionate people who care deeply about our customers and each other.

If you're excited about building great products, exploring new ideas, leveraging emerging technologies like AI, and helping shape the future of payroll and people management software in New Zealand, we'd love to hear from you.

Apply now with your CV and a cover letter telling us why you'd like to join Smartly.