Senior Application Security Engineer

About the company

Halter is a New Zealand startup that builds solar-powered smart collars for cattle enabling remote herding, virtual fencing and health monitoring.

About this role

ABOUT HALTER 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 https://foundersfund.com, Bessemer Venture Partners https://www.bvp.com/, BOND, https://www.bondcap.com/ DCVC https://www.dcvc.com/, Blackbird https://www.blackbird.vc/, Promus Ventures https://www.promusventures.com/, Rocket Lab’s Peter Beck and Icehouse ventures https://www.icehouseventures.co.nz/?utm_term=icehouse%20ventures&utm_campaign=Brand+Keywords&utm_source=adwords&utm_medium=ppc&hsa_acc=4064636360&hsa_cam=16902737884&hsa_grp=134004309485&hsa_ad=592971340272&hsa_src=g&hsa_tgt=kwd-1082530126230&hsa_kw=icehouse%20ventures&hsa_mt=b&hsa_net=adwords&hsa_ver=3&gclid=Cj0KCQjw2v-gBhC1ARIsAOQdKY0J0DepRVFDmjQlAkJPbZuQnLSA5UVzUzOXYiPxkjX-SeVa513_BhkaAr-MEALw_wcB. To find out more, visit our LinkedIn https://www.linkedin.com/company/halter-limited & Instagram https://www.instagram.com/lifeathalter/. About the role Halter enables farmers to grow and graze more grass through the use of virtual fencing. Every farm is deployed with communication infrastructure and a collar for each animal, which is then paired with a mobile and web application. The result is tens of hours of labour saving per week, improved animal welfare, and increased productivity and sustainability of the land.   To ensure we can keep the system airtight and continue to deliver on this mission we are looking to bring on a Senior Application Security Engineer.   With Halter's system now serving hundreds of thousands of devices in the field, and spanning over 40 engineers across five teams, we need to make sure we have the right ways of working in place to deliver a reliable and secure product as we expand globally.   As the first in this role you have the opportunity to define how we think about and operate application security here at Halter. You will have ownership over everything from security practices, to education of the team, to threat detection, compliance, third-party assessment, penetration testing, and everything in between.   In this role you will be hands-on, operating with deep technical expertise, a high level of agency, as well as using strong communication skills. You will work across the entire technical stack, from the mobile code, to our backend systems, all the way to the firmware running on the collar. You can expect a high level of collaboration working as part of our ‘context over control’ culture to introduce best practices that mature our security posture while ensuring we maintain the speed of delivery we value as a company.   As part of this you will work primarily in the AWS ecosystem across a mix of managed and self managed services. You will work alongside a small but deeply experienced platform engineering team, all with a strong mindset of IaC, a love for autonomy, and a passion for their craft. What your day could look like - Proactively identify, assess, and prioritise security vulnerabilities, threats, and risks across our systems, working to implement effective mitigation strategies. - Research, define and create threat models that can be used as a cornerstone of preparation in the application and infrastructure security landscape. - Help define and evolve security practices and standards across the organization, balancing pragmatic risk reduction with the need for developer velocity and operational effectiveness. - Write and maintain high-quality code and tooling to resolve known security issues and address vulnerabilities across our full engineering stack, from infrastructure to application layers. - Provide mentorship, guidance, and technical leadership to engineers across the business, ensuring security knowledge and best practices are understood, adopted, and embedded into team workflows. - Work closely with domain-specific engineering teams to dive deep into complex security challenges, leading investigations and developing robust solutions that scale. - Identify, fix, and prevent vulnerabilities across the platform through proactive design reviews, secure coding practices, regular testing, and architecture improvements. - Drive security incident response readiness, participating in detection, analysis, and resolution of security incidents while embedding learnings into future prevention strategies. - Help define and maintain security incident response playbooks, to assist in timely and consistent response, using automation to drive efficiency. - Maintain consistent communication and collaboration with third-party partners and vendors to ensure we are effectively leveraging external expertise, audits, and tools to meet our security goals. - Contribute to security education and awareness initiatives, helping foster a strong culture of security across all parts of the organisation. - Participate in a 24/7 on-call rotation, providing expert security support during incidents and working to continuously improve our operational response capabilities. Who we're looking for - Extremely motivated, wants their work to matter and is not afraid to push hard to help Halter achieve its mission. - Loves working as pa