Senior Site Reliability Engineer

12month Fixed Term Contract About us Mantel is an Australian-owned IT Professional Services consultancy, focused on emerging technology to help advance our clients by leveraging AI, Digital, Cloud, Data & Security technology. We are a fully AI-enabled technology consultancy and the partner that bridges the gap between blue-sky ambition and practical steps to deliver value. Since our inception in November 2017, we have experienced remarkable growth across Australia & New Zealand and are honoured to be recognised as a Great Place to Work for 6 years in a row! We hire smart and talented people and get out of their way. As a principle-based organisation, we have a flat structure with no hierarchy. By focusing on our five principles and not getting caught up in red tape, we trust you to get the job done! Cloud Mantel’s dedicated cloud capability means you will work with passionate people and the latest tech in your cloud of choice. Whether you're helping businesses reach their full potential with Microsoft, executing full transformations on AWS, or leveraging Google Cloud, our deep partnerships mean you'll work on high-profile projects, including AI-accelerated cloud migrations and redeveloping entire applications for our clients using agentic coding. About the role As a Senior Site Reliability Engineer, you own reliability for our managed services customers. That means keeping their systems up and secure across AWS, Azure, and GCP while automating the work that shouldn't require a human. You'll push back on bad architecture, shape how we use AI to respond faster, and contribute to the patterns and platforms Mantel builds for customers who face similar problems repeatedly. Your day-to-day Own reliability for managed services customers across AWS, Azure, and GCP. Customer environments vary widely in maturity, stack, and compliance constraints.Participate in a structured on-call rotation (typically every second week, alternating between primary and secondary support). We actively protect your time: pages only trigger when error budgets breach or core services fail, never for warnings, and automated runbooks handle initial triage so you aren't waking up to noise.Work from defined runbooks for most incidents and diagnostics. Your job is automating the repetitive parts, surfacing problems before they page, and making incident response faster.Collaborate with our software, database, and infrastructure experts to evolve how we detect and resolve incidents, leveraging proprietary, next-generation AI and automation platforms.Provide constructive architectural governance, challenging anti-patterns and guiding clients toward secure, reliable, and maintainable cloud solutions.Help expand our managed services solutions reliably as we mature cloud, software, and database patterns. You’ll contribute to the core platforms and patterns Mantel offers repeatedly to customers.Shape how we use AI and automation to accelerate reliability work across our customer base. You’ll help articulate how our AI driven solutions solve specific client problems.Build relationships with key technologists on the customer side. You’re not just fixing their incidents, you’re helping them understand what’s possible and what we can do together.Contribute to our internal optimisation and productivity backlog. You identify where toil exists and drive improvements that benefit all our customers.Use professional judgement while treating colleagues and clients with respect and compassion, and a demonstrated ability to display our Mantel principles What you’ll need to be successful: Demonstrated proficiency in Python or TypeScript. You write modular, tested, and maintainable code to build custom platform tools, API integrations, and automation frameworks.Deep expertise managing production workloads in AWS (AWS Associate certification preferred). Practical exposure to Azure or GCP is a strong advantage, with full support provided for multi-cloud cross-skilling.An IaC-first mindset using Terraform or CDK, treating infrastructure management with the same rigour as software development.A solid understanding of cross-cloud security best practices, governance frameworks, and their direct impact on system reliability.Strong Linux and networking skills (Bash scripting, TCP/IP, DNS, containerisation) with the hands-on ability to troubleshoot and debug at the OS level.Experience designing and maintaining automated deployment pipelines using commercial Git workflows (e.g., GitHub, GitLab) to ensure reliable delivery.A functional understanding of modern AI advancements, with the curiosity and capability to leverage AI-driven tooling to enhance operational efficiency and reliability.At Mantel, we want you to be yourself. We trust our team members to use their professional judgment while treating colleagues and clients with respect, compassion, and professionalism in alignment with our five principles.You take ownership, always stepping up to help and prioritising your teammates. You're also a clear, kind communicator who makes sound decisions based on good judgement. What you can expect from us: We believe in unique experiences for all. Our My Deal program allows you to tailor your yearly plan, with the support of your Leader, to decide on what’s most important to you. That might be extra professional development, extra annual leave, time to work on your side hustle, or something else completely different! One size does not fit all.You’ll get all the tools you need to hit the ground running including a new phone, laptop & swag.A true investment in your AI-first career. We are a fully AI-enabled consultancy and provide you with the tools to lead. This includes access to the Mantel AI Gateway, our secure, centralised platform with multiple AI models, plus a dedicated monthly budget and a safe environment to experiment and innovate.You’ll be genuinely supported by an organisation that cares about not only you but your family as well, Mantel offers Flexible Personal Leave options for those unplanned moments in life.We support a flexible hybrid approach to working which is guided by our principles; we trust each other to “make good choices” about the best workplace locations for the requirements of the project, role and client. This can change based on our client needs.We know you won’t have one job for life. At Mantel, we believe in supporting our team to take their career in a direction that aligns with their passions. We have internal opportunities across Cloud, Data, Digital, Delivery & Security.Our elite partnerships are a direct result of our deep platform mastery. For you, this means you'll be working alongside teams with the highest levels of technical expertise and tackling the most complex, high-profile projects on the market. Check out our partner awards and recognitions here.Mantel is a certified Family Inclusive Workplace, which means we are committed to improving your wellbeing at work through leading practices on flexible work, parental leave, family care and family wellbeing We value a diverse workplace and strongly encourage people from all backgrounds and minority groups to apply.