Senior Mobile Engineer - iOS

Halter; Auckland; On-site; NZD 120,000 - 180,000; Full time

Benefits offered by this job

Personal growth fund

Job summary

Halter is seeking a Senior or Lead Mobile Engineer with deep expertise in iOS native development and a product‑obsessed mindset. You will drive a truly native mobile experience via a React Native codebase, leading architecture and delivering high‑impact features.

You’ll collaborate with Product and Design, optimize performance, mentor teammates, and shape the mobile design system while ensuring top‑tier user experiences across devices.

Qualifications

• Senior or Lead Mobile Engineer with deep expertise in iOS native development and a product-obsessed mindset.
• Ability to deliver a truly native mobile experience through a React Native codebase.
• Hands-on and collaborative leadership in mobile engineering.

Responsibilities

• Lead the architecture and implementation of core features for the Halter app, with a focus on deep native integration and components.
• Collaborate closely with our React front-end engineers, guiding the domain to ensure a seamless and performant native mobile application.
• Bring a strong product lens—with Design and Product—to make smart trade-offs and ship high-impact mobile features fast.
• Drive mobile app performance, focusing on metrics and optimisations to deliver a fast user experience and minimize battery impact.

Skills

iOS

React Native

Performance optimization

Mobile architecture

Mentoring

Job description

Jora New Zealand will close on 9th September 2026. Thank you for being with us, we are cheering you on as you continue your career journey.

At Halter, we’re on a mission to enable farmers and graziers to run the most productive and sustainable operations. Our customers are using Halter to break free from the time-intensive constraints of conventional practices. Imagine watching 500 cattle stand up and walk calmly towards their next break? No quad bikes, no dogs, no fences. Just a group of cattle walking at their own pace. People say it looks like magic. Our customers are revolutionizing grazing with Halter. It's changing lives and transforming an industry. People join Halter to do meaningful work. By joining us you’ll be solving challenging problems within a talented team and a culture built for high performance. Our team out-think, out-work and out-care. We’re committed to delivering real change in the world - this isn’t easy, and in truth, we love that it’s hard.

We’re backed to deliver on a mission that matters by Tier 1 investors including Founders Fund, Bessemer Venture Partners, BOND, DCVC, Blackbird, Promus Ventures, Rocket Lab’s Peter Beck and Icehouse ventures.

About the role

We’re looking for an epic Senior or Lead Mobile Engineer with deep expertise in iOS native development and a product-obsessed mindset. This role requires a strong appetite for delivering a truly native mobile experience through a React Native codebase. As a leader, you will drive an obsession with creating fast and beautiful user experiences, alongside a deep focus on performance and improving the developer experience across the board.

You’ll be hands‑on and collaborative, refining our ability to deliver a top‑tier native mobile experience as we grow. Collaborating with our product and platform teams, this engineer will be responsible for guiding our incredible mobile app into the place it needs to be. We care about how you think and act: curious, thoughtful, practical, and someone who takes absolute ownership.

What you’ll do

Lead the architecture and implementation of core features for the Halter app, with a focus on deep native integration and components.

Collaborate closely with our React front‑end engineers, guiding the domain to ensure a seamless and performant native mobile application.

Bring a strong product lens‑work with Design and Product to make smart trade‑offs and ship high‑impact mobile features fast. Use AI tools (e.g. Claude, Cursor) to boost quality and speed without sacrificing readability or tests.

Drive mobile app performance from every angle, focusing on metrics and optimisations to deliver a quick user experience and have minimal impact on battery life.

Build resilient flows and graceful error handling for real‑world field conditions.

Evolve our mobile design system and UI patterns.Raise the bar through reviews, pairing, and mentoring.

You’ll thrive in this role if you

Are deep in iOS native development and have strong opinions on mobile architecture, and systems to deliver an optimal native experience.

Experience, and scars, with App Store releases at scale, design systems, and mentoring mobile engineers.

Experience with React Native, understand how this maps to the iOS platform.

Demonstrate an obsession with performance optimisation and improving DX for mobile engineers.

Have shipped complex, high‑performance native iOS applications in cross‑functional teams.

Thrive in fast‑moving, ambiguous environments.

Understand performance deeply, accessibility, testing, and maintainability.

A degree is a bonus, not a requirement.

Our Office First Approach

There’s a reason you visit your friends in person, live with your family and don’t do dinners over Zoom. Humans are wired for connection. We believe a world‑class, in‑person office culture is the best way for high‑performing teams.

Being office first is a core pillar of our culture. We believe in‑person connections are key to driving your own growth, learning, impact, and building genuine long‑lasting relationships. Strong relationships make it easier to disagree, give feedback, and do meaningful and aligned work. We don’t like having heaps of rules or policies, but this means having strong, trusted relationships is critical.

We’re office first, not office only. This means working from the office everyday is our default setting, but we flex when we need to. We have a high‑trust culture, so everyone is trusted to do what’s best for Halter.

Our office vibe is something special, it’s hard to describe until you’re here, but people at Halter who have come from fully remote or hybrid companies say they could never go back – the high energy and spectacular people they are now surrounded by everyday makes work so enjoyable. Your growth, your learning and your impact is truly unlimited here, and a big part of that comes from being together solving problems, innovating, building context, and constantly learning from each other.

About the role

We’re looking for an epic Senior or Lead Mobile Engineer with deep expertise in iOS native development and a product‑obsessed mindset. This role requires a strong appetite for delivering a truly native mobile experience through a React Native codebase. As a leader, you will drive an obsession with creating fast and beautiful user experiences, alongside a deep focus on performance and improving the developer experience across the board.

You’ll be hands‑on and collaborative, refining our ability to deliver a top‑tier native mobile experience as we grow. Collaborating with our product and platform teams, this engineer will be responsible for guiding our incredible mobile app into the place it needs to be. We care about how you think and act: curious, thoughtful, practical, and someone who takes absolute ownership.

What you’ll do

• Lead the architecture and implementation of core features for the Halter app, with a focus on deep native integration and components.

• Collaborate closely with our React front‑end engineers, guiding the domain to ensure a seamless and performant native mobile application.

• Bring a strong product lens‑work with Design and Product to make smart trade‑offs and ship high‑impact mobile features fast. Use AI tools (e.g. Claude, Cursor) to boost quality and speed without sacrificing readability or tests.

• Drive mobile app performance from every angle, focusing on metrics and optimisations to deliver a quick user experience and have minimal impact on battery life.

• Build resilient flows and graceful error handling for real‑world field conditions.

• Evolve our mobile design system and UI patterns.Raise the bar through reviews, pairing, and mentoring.

You’ll thrive in this role if you

• Are deep in iOS native development and have strong opinions on mobile architecture, and systems to deliver an optimal native experience.

• Experience, and scars, with App Store releases at scale, design systems, and mentoring mobile engineers.

• Experience with React Native, understand how this maps to the iOS platform.

• Demonstrate an obsession with performance optimisation and improving DX for mobile engineers.

• Have shipped complex, high‑performance native iOS applications in cross‑functional teams.

• Thrive in fast‑moving, ambiguous environments.

• Understand performance deeply, accessibility, testing, and maintainability.

• A degree is a bonus, not a requirement.

Our Office First Approach

There’s a reason you visit your friends in person, live with your family and don’t do dinners over Zoom. Humans are wired for connection. We believe a world‑class, in‑person office culture is the best way for high‑performing teams.

Being office first is a core pillar of our culture. We believe in‑person connections are key to driving your own growth, learning, impact, and building genuine long‑lasting relationships. Strong relationships make it easier to disagree, give feedback, and do meaningful and aligned work. We don’t like having heaps of rules or policies, but this means having strong, trusted relationships is critical.

We’re office first, not office only. This means working from the office everyday is our default setting, but we flex when we need to. We have a high‑trust culture, so everyone is trusted to do what’s best for Halter.

Our office vibe is something special, it’s hard to describe until you’re here, but people at Halter who have come from fully remote or hybrid companies say they could never go back – the high energy and spectacular people they are now surrounded by everyday makes work so enjoyable. Your growth, your learning and your impact is truly unlimited here, and a big part of that comes from being together solving problems, innovating, building context, and constantly learning from each other.

Why our team loves working at Halter:

• Work that genuinely matters. Every now and again a company comes along that transforms an entire industry and leaves the world in a better place. Our team gets to be part of something truly meaningful, helping farmers improve their livelihoods, spend more time with their families, and build more sustainable operations.

• Spectacular people solving hard problems. Our culture is designed for talented people to do work that changes lives. The team is filled with diverse, kind, and driven people who push each other to do their best work. You'll be thrown into the deep end, tackling complex challenges and building something tangible that solves real problems.

• You'll grow here. Autonomy, mastery, and learning define how we work. You’ll have the freedom to work on interesting problems, master new skills, and continuously develop yourself, both through your role and our $1,000 personal growth fund.

• This isn't easy, and we love that it's hard. Working at Halter will be the most rewarding and the most challenging work of your life. We move fast, take bold bets, and work hard to reshape an entire industry. As one team member put it: "Joining Halter is a bit like strapping yourself to a rocket ship, but it's an epic journey to be a part of!