Wellington-based | Flexible Work | Meaningful Tech for Good
We're on the hunt for a sharp, impact-driven Senior Back-End Developer to join our close-knit team at Thankyou Payroll — a purpose-led tech company powering payroll for over 7,000 businesses and charities across Aotearoa.
You’ll play a key role in building and improving the systems behind our payroll engine — think payments, IRD filing, data integrity and smart scalability. You’ll get your hands dirty with C#/.NET in a cloud-first environment, while occasionally dipping into our legacy PHP systems. It’s a great mix of architecture, problem-solving, and mentoring, with plenty of room to contribute and influence.
Designing and building high-quality, scalable back-end systems
Working closely with our Technical Lead and Product team to shape solutions
Supporting and maintaining existing systems during a period of modernisation
Mentoring other developers and sharing best practices
Translating technical ideas clearly for non-technical stakeholders
Joining the on-call roster every second week to keep an eye on payroll processing (usually around 30 minutes in the evening) — rare interruptions, but important for smooth operations
5+ years of experience in software development, ideally with a focus on backend systems
Strong experience in C#/.NET development (and PHP experience is a plus)
Real-world experience with workflow tools, APIs, and CI/CD
A passion for clean code, security, and performance
Confidence in debugging and solving complex technical problems
A collaborative mindset and eagerness to keep learning and growing
Bonus: experience with Gen AI APIs, the finance industry, or front-end frameworks
You're a practical problem solver who sees the big picture but doesn’t miss the details. You're curious, collaborative, and motivated to build tech that makes a difference.
Full job description: https://tinyurl.com/5n65yw6n
Thankyou Payroll isn’t your typical SaaS company — we’re a community-owned social enterprise, which means we generate profit with purpose and have generosity built into our DNA.
In the past year, we:
Provided over $300,000 in in-kind services to charities
Took big steps toward steward ownership
Remained Aotearoa’s only certified carbon positive payroll provider
You’ll be part of a company that prioritises impact, sustainability, and people — both inside and outside the organisation.
Here’s what we offer:
5 weeks’ annual leave + birthday leave
20 days of sick days
Fully subsidised Southern Cross health insurance (Wellbeing One)
4% employer KiwiSaver contributions (with matching up to 6%)
$600 annual wellness allowance
Interest-free loans for e-bikes
Bloody Good Workplace programme benefits
Free public transport for commuting
A central Wellington office with flexible work options
A supportive, values-led culture
If this sounds like the perfect opportunity for you, we’d love to hear from you! Please send us your CV and a short cover letter explaining why this role excites you and why you're the right fit.
Applications without a cover letter won’t be considered.
If you have any questions, feel free to reach out to Nicole Kennedy at nicole.kennedy@thankyoupayroll.nz
We’ll be reviewing applications and interviewing as they come in, so don’t wait around — we may close the listing early if we find the right person.
Thankyou Payroll is all about payroll, impact and generosity.
We deliver an exceptional payroll solution – giving employers across Aotearoa New
Zealand the time to focus on building better businesses.
However we do things a bit differently. As a social enterprise, we are a profit-
generating business with generosity baked right into our operating model.