Full Stack Software Engineer - Smartly

Datacom; Auckland; On-site; NZD 90,000 - 140,000; Full time

Benefits offered by this job

Flexible & hybrid options

Paid parental leave

24/7 Employee Assistance Programme (D

Job summary

Smartly, a Datacom company, is seeking a Smartly Full Stack Engineer to own the delivery of payroll system features in a fast-paced FinTech environment. You will work across the stack, mentor juniors, and design clean, scalable code using modern tooling and AI-assisted development.

You should have 2+ years of IT project experience, strong C# .NET and front-end skills (HTML/JS/CSS, React, Razor), and a solid grounding in SOLID and OO design.

Qualifications

• 2+ years of IT project experience across the SDLC.
• Recent C# .NET experience with at least 2 years.
• 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 OO programming.
• Knowledge of software configuration management using Git.
• Familiarity with service-oriented frameworks.
• Ability to implement features, unit tests, and fix complex bugs.
• Excellent communication skills and teamwork.
• Public cloud exposure (Azure) is a bonus.

Responsibilities

• Own day-to-day delivery of assigned work, clarifying feature ambiguity and supporting release.
• Contribute to team delivery by estimating effort, signaling risks, and communicating progress.
• Contribute to quality through testing, code reviews, and safe change practices.
• Use modern tooling and AI-assisted development to improve delivery and code quality.
• Mentor less experienced engineers through collaboration and feedback.

Skills

C# .NET

Front-end

React

ASP.NET Razor

SOLID principles

OO programming

Git

Azure

Tools

Git

Azure

Job description

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 whereyou'llbe supported to grow your career,prioritiseyour wellbeing, and make a genuine impact. From industry-leading learning and development opportunities to parental leave, wellbeing support, and employee benefits,we'recommitted to helping our people thrive both professionally and personally

We'repassionate about creating a workplace where people feel supported, empowered, and inspired to do their best work. Whetheryou'redeveloping new skills, tackling complex challenges, or collaborating with some of the best minds in the industry,you'llbe 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 AssistanceProgramme(DataCare)

• Ongoing learning, certifications, and career development opportunities

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

• Recognitionprogrammesthat celebrategreat 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.