Signal Engineer at maincode | Melbourne

About MaincodeMaincode is pioneering the field of artificial intelligence as a dedicated research and engineering firm, proudly hosting Matilda, Australia’s first and only large language model developed from the ground up. Our advanced AI infrastructure is housed in local data centers, where we design, build, and operate systems ranging from server racks to complex model training and serving architectures.We are in the process of creating an AI Model Factory, a revolutionary compute infrastructure that enables cutting-edge AI research and scalable production systems.About the RoleThis position is a unique opportunity to work at the crossroads of physical systems, large-scale computing, and AI research. You will play an integral role in designing and managing the infrastructure necessary for training large-scale AI models, including GPU racks, high-performance networks, and orchestration systems that ensure smooth operation.We welcome individuals with a strong research mindset and systems-oriented thinking. While prior data center experience is not required, a strong sense of curiosity, ability to reason from first principles, and a quick learning aptitude are essential. Candidates with backgrounds in mechatronics, robotics, or aerospace, coupled with robust computational skills, will find this role particularly rewarding. We provide ample time, mentorship, and resources to help you master these systems, allowing you to develop expertise in one of the most critical technical fields of the next decade.What You’ll DoGain expertise in designing, deploying, and operating the core infrastructure for AI.Engage with GPU clusters, high-speed networking, and extensive Linux systems.Contribute to the architecture of Australia’s inaugural production-scale AI data center systems.Collaborate with AI researchers and engineers in shaping the next wave of model training environments.Innovate new operational and architectural strategies based on fundamental principles.You Might Be a Fit IfYou possess hands-on experience with computational systems, including systems programming, Linux environments, GPU or accelerator programming, distributed or HPC environments (e.g., MPI), automation, or large-scale numerical computation.Your background may include adjacent technical or scientific fields such as mechatronics, robotics, aerospace, or physics, where you have honed strong computational and modeling skills.You have a passion for understanding complex systems from foundational principles.You quickly learn and apply new technologies, adapting to the evolving landscape of AI infrastructure.

At Maincode, our mission is clear: to develop and deliver Matilda, Australia's pioneering conversational AI platform, with a focus on collaboration and innovation. We prioritize our team and the impactful work we do together.Matilda stands as the first fully Australian conversational AI platform, representing a significant technical challenge that we are tackling with a dedicated team that values speed and seriousness in our work.We seek intelligent, humble individuals who are eager to contribute to something meaningful, regardless of how they do so. Whether diving into research literature or mastering the construction of telemetry systems for scalable production infrastructure, your journey with us will be diverse and fulfilling.We value skill and character over traditional qualifications. Many of our top performers come from unexpected backgrounds, holding advanced degrees in adjacent fields or possessing uncommon combinations of experience. What they share is excellence, a capacity for rapid learning, and a commitment to teamwork.If you're looking for a highly detailed job specification, this may not be the right fit. If you find relief in the ambiguity and are excited by the prospect of diving into this challenge, we want to hear from you.

About the RoleMaincode is at the forefront of artificial intelligence, developing the next iteration of Matilda, Australia's pioneering large language model. As we scale this innovative model, we aim to deploy it as a robust live production system.Our approach is rooted in first principles, where we meticulously design architectures, manage infrastructure, guide the training process, and operate the systems that support our models.Matilda is not a mere research prototype; it is a production-ready system intended for open public access. This role is pivotal in shaping the user experience of Matilda, making it not just functional but also intuitive and engaging.As a Product Engineer, you will be instrumental in crafting the user-facing experience of Matilda. Your contributions will extend beyond implementation to encompass how users interact with and perceive the product.This is a collaborative role where you will work closely with UX designers and directly implement your ideas in code, shaping the nuances of user interaction.Key ResponsibilitiesYour contributions will enhance both the public interface of Matilda and its internal tools, including:Designing the core web interface for user interaction with Matilda (chat, sessions, history, settings).Implementing responsive, reliable streaming UX for real-time model outputs (including tokens, partial responses, cancellations, and retries).Contributing to interaction design for both standard and edge-case scenarios (latency, uncertainty, refusals, and errors).Designing UI workflows that promote safe and responsible usage (feedback mechanisms, content management).Iterating on layout, typography, spacing, and interaction details directly through code.Enhancing perceived performance and responsiveness through thoughtful UI design decisions.Developing internal tools and dashboards with an emphasis on usability and clarity.Collaborating closely with backend and infrastructure engineers to integrate APIs, authentication, and system constraints.Your role will balance coding with strategic thinking about user flows, edge cases, and overall product behavior.Ideal Candidate ProfileWe seek engineers at the start of their careers who deeply value user experience, focusing on the feel of the product as much as its functionality. If you have a passion for building engaging interfaces and are eager to learn and grow within a dynamic team, we encourage you to apply.

Join Our Team as an AI Software EngineerAt Maincode, we are pioneering the development of Matilda, Australia’s first large language model built and trained from the ground up. With our new compute cluster operational, we are excited to scale the next iteration of this innovative project.In this role, you will be an integral part of the training infrastructure. Your responsibilities will include constructing the pipelines and tools that enhance the efficiency of Matilda’s training, ensure stability during prolonged runs, and expedite the execution of new experiments. Given that training durations can extend from days to weeks, your work will require meticulous attention to detail.At Maincode, we believe in building AI systems from the ground up: from designing architectures to managing the infrastructure, shaping the training process, and operating the models ourselves. Matilda is not just a research prototype; it’s a fully operational system, developed at scale for open public use.We proudly operate one of Australia’s largest private AI compute environments, dedicated exclusively to training our models. This position does not involve wrapping external APIs or shipping user-facing features; instead, you will focus on the underlying systems that drive the training of a large language model from scratch.

Role overview Maincode is seeking a Distribution Engineer for Matilda in Melbourne. This position centers on designing and managing AI-driven systems to support how Matilda connects with its users. The focus is on building distribution strategies that enable growth, with a strong emphasis on automation and scalability. The team at Maincode works across research, engineering, and operations to develop solutions that move beyond manual processes. The aim is to create systems that operate independently and efficiently, allowing one person to accomplish what previously required a full team. What you will build AI agent pipelines to generate, test, and optimize ads, content, and messaging at scale Growth strategies for paid, organic, and owned channels Experimentation frameworks to improve performance across the user funnel Real-time feedback loops that connect to data sources and APIs for informed decision-making A self-improving, autonomous distribution engine

About the RoleMaincode is on a mission to develop Matilda, a cutting-edge large language model created entirely in Australia. With our new compute cluster now operational, we are scaling the next iteration and preparing for public deployment.This position is integral to our production system that supports Matilda. You will be tasked with creating and maintaining back-end services that ensure the model's practical usability, including APIs, infrastructure, and systems that transform a trained model into a dependable public resource.Our approach to AI development is comprehensive; we architect the systems, manage the infrastructure, train the models, and operate the solutions ourselves. Matilda is not merely a research prototype; it represents a robust production system trained at scale and made available to the public.Maincode boasts one of Australia's largest private AI compute environments, dedicated to the training and operation of our proprietary models. You will directly engage with the systems that deploy and serve a model built from the ground up.Your ResponsibilitiesYour role will involve building and sustaining the services that bridge the model and external interactions.This encompasses tasks such as:Developing and maintaining services for model inference and user requestsDesigning systems for managing requests, sessions, and streaming responsesImplementing reliability features including rate limiting, retries, and graceful failure mechanismsEstablishing authentication and access controls for public useCreating systems for logging, telemetry, and evaluation signalsEnhancing latency, throughput, and reliability in model servingIncorporating new model checkpoints into the production environmentCollaborating closely with training and infrastructure engineers to deploy and maintain the modelMost of your work will occur within production systems, focusing on logs, traces, performance profiles, and deployment pipelines. Our priority is to ensure a system that remains operational, efficient, and predictable under load.Who Thrives in This Role?We seek engineers at the beginning of their careers who are eager to learn how to build and operate production AI systems effectively.You may have one or two years of experience in developing production software. What we value most are curiosity, reliability, and a willingness to understand large-scale system operations.

About the RoleMaincode is at the forefront of AI innovation, creating foundational models built from the ground up on Australian infrastructure. We specialize in designing architectures, managing our own computing resources, optimizing training processes, and deploying robust systems that power our models.We are proud to have developed Matilda, the first large language model entirely built and trained in Australia. Our new compute cluster is operational, and we're excited to scale the next iteration of Matilda, making it accessible for public use.We invite passionate AI researchers to join us in refining the core architecture, training, and evaluation of the large-scale language models that drive Matilda's capabilities.This position emphasizes substantial contributions over incremental benchmarks. You will collaborate closely with engineers who manage large-scale training systems, focusing on designing models that learn efficiently and perform reliably in real-world applications.Your ResponsibilitiesAs part of our team, you will engage throughout the model development cycle, addressing research questions, conducting training runs, and performing evaluations. Your key tasks will include:Designing and testing architectural modifications and training methodologies for large language models.Executing controlled experiments at scale to isolate causal impacts.Investigating failure modes related to reasoning, generalization, robustness, and representation.Defining objectives, data mixes, and optimization strategies that significantly affect model behavior.Creating and enhancing evaluations that measure capabilities and reliability, beyond mere numerical scores.Analyzing training dynamics through logs, metrics, and model outputs.Partnering with machine learning systems engineers on distributed training and operational tasks.Documenting insights and experimental outcomes in clear internal notes to inform design decisions.You will spend a considerable amount of time developing code, running training sessions, analyzing logs, and evaluating outputs to ensure clarity on what enhances the model's performance and the rationale behind it.QualificationsWe value deep analytical reasoning, disciplined experimentation, and the capability to navigate ambiguity effectively. Ideal candidates will possess:Hands-on experience in developing and executing production-level machine learning or research code.Proficiency in Python, with experience in frameworks such as PyTorch or JAX.A strong foundation in transformer architectures and large-scale language models.Familiarity with distributed computing environments and data processing techniques.Excellent problem-solving skills and the ability to work collaboratively within a team.

Join Egis Group as a Principal Signalling Design Engineer and play a pivotal role in the design and implementation of innovative signalling systems for transportation projects. In this dynamic position, you will leverage your extensive experience in engineering to lead projects, supervise junior engineers, and collaborate with multidisciplinary teams to ensure the successful delivery of high-quality solutions.

Role Overview Innergy1 is looking for a Solutions Engineer in Melbourne. This role centers on working with clients to understand their needs, shaping custom solutions, and supporting the delivery of our products. Collaboration with teams across the company is a regular part of the job. What You Will Do Work with clients to identify requirements and challenges Design solutions that fit client needs using innergy1 products Coordinate with colleagues from different teams to ensure smooth implementation Support clients throughout the deployment process Location This position is based in Melbourne.

Carbon Robotics is looking for a Field Robotics Engineer based in Melbourne. This role centers on developing and deploying advanced robotic systems to drive automation in various industries. Role overview The position involves hands-on work with robotics technology, contributing to projects that aim to solve practical, real-world problems. The systems built and deployed in this role play a direct part in supporting automation efforts across several fields. What you will do Build and deploy robotic systems for industry automation Work on projects that address real-world challenges Location This role is based in Melbourne.

Join us as a Chief Engineer at Accor Hotels, where you'll play a pivotal role in ensuring the seamless operation and maintenance of our facilities in Melbourne. We are looking for a proactive leader who is passionate about delivering exceptional service and maintaining high standards of quality across our properties.

Join our dynamic team at Pexa as a Principal Engineer, where innovation meets excellence. In this pivotal role, you will lead complex engineering projects, driving the design and development of cutting-edge solutions that transform the property settlement industry. Collaborate with a talented team, leverage advanced technologies, and help shape the future of digital conveyancing.

Role Overview The Principal Engineer at Xero works closely with teams across the product group to design and deliver software solutions for customers. This role leads efforts to strengthen engineering practices, improve software architecture, and ensure technical decisions support Xero’s product roadmap. Collaboration with senior leaders is a key part of the job, helping to shape technical strategy and align teams on shared goals. Responsibilities include clarifying complex technical challenges, simplifying processes, and using data to drive decisions that deliver customer value early. The Principal Engineer also identifies cross-team opportunities and partners with others to address engineering challenges at scale. Team Collaboration and Culture This position fosters a cross-functional environment, contributing to the technical roadmap and architectural direction both within the product group and across Xero. Building trust and credibility with stakeholders and support teams is essential. The team culture emphasizes psychological safety, inclusion, and empowering teams to experiment, learn, and perform at their best. Key Focus Areas Refactoring complex, monolithic systems into scalable, cloud-native distributed architectures. Promoting a modern DevOps culture and supporting the adoption of technologies such as AWS, Kubernetes, and React. Setting engineering standards and frameworks at the portfolio level to raise quality across teams. Guiding teams in defining and implementing SLOs, while ensuring deployment pipelines are reliable and secure. Work Environment This Melbourne-based role follows a hybrid work model, combining in-office collaboration with remote work flexibility. The office at 260 Burwood Rd offers modern facilities and the chance to connect with a skilled and engaged team.

Role overview blinq seeks a Head of Engineering to lead its Melbourne-based engineering team. This position sets the direction for engineering projects and plays a key role in shaping team culture. The Head of Engineering steers technology initiatives that address client needs and supports a collaborative, high-performing environment. What you will do Lead and mentor the engineering team, fostering growth and teamwork Define and implement engineering strategy that aligns with company goals Oversee project delivery, ensuring work supports organizational objectives Promote engineering best practices and maintain high standards across projects Requirements Strong background in engineering management Demonstrated ability to lead and motivate diverse teams Experience guiding technology development to meet evolving client needs Proven track record of delivering projects that satisfy both business and technical goals Location: Melbourne, Victoria

Join Amber Electric as a Software Engineer within our rapidly growing Product & Technology team, where you will report directly to the CTO. In this role, you'll be instrumental in developing and supporting innovative products that empower our customers to take control of their energy usage.The Amber Electric product team focuses on:Creating user-friendly Mobile & Web applications for customers to monitor and manage their energy consumption.Building a dynamic pricing and billing engine that reflects real-time energy pricing.Integrating home automation solutions that adjust electricity usage based on pricing and renewable energy availability.Enhancing our marketing site and associated tools to accelerate customer growth.Our technology stack includes a React Native mobile app, various React web frontends, and a Serverless Lambda backend hosted on AWS. We utilize TypeScript throughout and implement Apollo GraphQL within our architecture. For further insights into our tech stack, feel free to visit here.At Amber, we believe in fostering a champion team rather than merely assembling a team of champions. We value versatile team members who can contribute across different layers of our stack. Our commitment to diversity and inclusion shapes our workplace culture, and we seek engineers who thrive in collaborative environments as much as they excel in coding.

Welcome to PEXA!At PEXA, we are redefining the property settlement process across Australia. Our groundbreaking digital platform simplifies the transactions of buying, selling, or refinancing homes, supporting over 20,000 individuals weekly in safely settling their properties.Since our inception in 2010, we have grown to a dedicated team of over 1,000 professionals spanning multiple continents. We continue to expand, innovate, and look ahead, driven by a collective of inquisitive creators and visionary thinkers. Now, we seek ambitious individuals like you to join our dynamic team.Your RoleAs a Senior Platform Engineer at PEXA, you will take on a pivotal leadership position within our Platform Engineering team, influencing the foundational infrastructure that supports our global technology ecosystem.You will be responsible for designing and implementing scalable, resilient, and secure cloud infrastructure within our AWS environments. Leveraging Infrastructure-as-Code and automation, you will enable consistent, high-quality delivery. You will spearhead the enhancement of our CI and CD pipelines, boosting velocity, reliability, and observability across the organization.Collaboration is vital in this role. You will work alongside software delivery teams, security experts, and observability specialists to elevate platform performance, security, and developer experience. Additionally, you will mentor and coach Platform Engineers and Graduates, influence architectural decisions, and contribute to our engineering standards and platform roadmap.Key ResponsibilitiesThis role focuses on driving the design, implementation, and ongoing enhancement of PEXA's global platform infrastructure.You will advocate for self-service capabilities that empower delivery teams, instill best practices for monitoring, alerting, backup, and incident response, and lead strategic initiatives around cloud cost optimization, architecture standardization, and technological modernizations.We seek a candidate who balances strategic insight with hands-on execution, embraces an AI-first approach, and actively fosters a positive engineering culture throughout our team.

Join Our Vision for a Connected Future.Vix Technology is a pioneering force in delivering cutting-edge solutions for public transit systems globally. With a rich legacy of over 35 years and our systems operating in more than 200 cities around the world, we believe that accessibility should be the norm. Our modular approach facilitates seamless integration of a diverse array of partners and technologies, resulting in exceptional solutions. Our vibrant team comprises over 450 committed professionals situated across 12 international offices, spanning the APAC, Europe, and North America. We are proud to cultivate a flexible and collaborative work culture that empowers our team members to connect, innovate, and thrive.If you share our passion for enhancing public transportation and excel in a team-oriented environment, we encourage you to apply and help us realize our vision of a more connected world.Discover Your New Role!We are in search of a proactive and skilled IT Infrastructure Engineer to enrich our Corporate IT team in Melbourne, Australia. Reporting directly to the Head of Corporate IT, this position will provide essential support to our expanding Melbourne office while also assisting users and managing platforms globally. This role blends hands-on user assistance with technical oversight of onsite services, enhancing IT operations, and participating in regional and global initiatives.As the senior IT representative in the Melbourne office, you will ensure a seamless and secure technology experience through proactive support, hardware and software maintenance, collaboration systems support, and comprehensive documentation. You will play a pivotal role in refining systems and processes, offering technical guidance as required, and mentoring fellow IT team members in Australia.This is a hybrid position that mandates a minimum of 3 days per week in the Melbourne office, with additional onsite presence required based on operational needs.Your Responsibilities Will Include:Providing Follow the Sun (F-T-S) support coverage and serving as a senior escalation point for IT incidents and service requests through the IT service desk platform, adhering to established SLAs.Delivering superior onsite support for Melbourne users and remote assistance for global users.Deploying, maintaining, and supporting user devices, such as laptops, peripherals, and mobile devices across Windows and macOS platforms.Managing onboarding and offboarding processes to ensure users have a seamless transition experience.Supporting and maintaining meeting room technology, video conferencing systems, and audiovisual equipment.Troubleshooting a wide range of issues across end-user computing, applications, networking, and authentication.Maintaining precise documentation, knowledge base articles, and asset management records.Assisting with procurement processes as needed.

Colliers seeks a Project Manager to join the Engineering & Design team in Melbourne. This position focuses on leading projects from initiation through completion, with a strong emphasis on meeting deadlines, staying within budget, and upholding quality standards. Key responsibilities Lead engineering and design projects through all stages, ensuring objectives are met Coordinate with cross-functional teams to organize tasks and allocate resources Monitor project timelines and progress to maintain schedules Maintain clear communication with stakeholders, providing updates and addressing any issues Utilize project management methodologies to drive successful project delivery Location This role is based in Melbourne.

Join Symmetrio as an Electrical Engineer for our esteemed client, a leading global player in the medical device industry. This pivotal role within the Functional Design team involves designing, developing, and optimizing both analog and digital circuitry for cutting-edge Nuclear Medicine products. You will thrive in a dynamic, collaborative environment, engaging in the entire product lifecycle—from initial concept development through to the production release. Key areas of focus include circuit analysis, design excellence, thorough documentation, prototyping, verification, and driving new product introductions.