PEXA
Principal Software Engineer
TLDR
This influential technical role at PEXA UK involves defining strategy, driving architectural decisions, and advancing AI capabilities while mentoring engineers across multiple teams.
Hi, we’re PEXA!
We know you’ll Google us before applying, so let’s keep this brief. PEXA revolutionised the way that property is settled in Australia, turning a paper-based process into a digital one. Our solution is a world-first, with over 500 people across Australia and an expanding international team, we’re helping 20,000+ families into their homes each week.
We’re passionate about solving problems for our customers – always striving to set the standard for how property is bought and sold. Being awarded as one of the best places to work in Australia is a recognition of our culture and commitment to innovation, customers and our community.
We’re growing fast, that is where you come in.
We believe our success in Australia is worth sharing and that our proven technology will advance how the UK buys and sells homes.
Establishing ourselves within the UK in late 2020, we are committed to collaborating with lawyers, conveyancers, lenders, government and the property industry, to set the new standard for both remortgages and buying and selling property.
We're looking for an exceptional Principal Engineer to help shape the future of engineering at PEXA UK.
This is one of the most influential technical roles within our organisation. Working closely with the UK CTO and engineering leadership team, you'll define technical strategy, drive architectural decisions, champion innovation, and help build the engineering capabilities that support our next phase of growth.
As a technical leader, you'll operate across multiple teams, influencing engineering direction at an organisational level rather than within a single product or platform. You'll mentor engineers, establish engineering standards, evaluate emerging technologies, and ensure we're building secure, scalable and resilient solutions that deliver outstanding customer outcomes.
You'll also play a key role in advancing how we leverage AI across both our products and engineering practices, helping PEXA stay at the forefront of technology innovation.
What You'll Be Doing
About You
Technical Strategy & Architecture
- Define and execute engineering strategy across multiple teams and domains.
- Drive architectural decisions that balance business priorities, scalability, security and long-term sustainability.
- Design solutions that support future growth and evolving customer needs.
- Identify and address technical risks across the organisation.
- Establish and evolve engineering standards, best practices and quality frameworks.
- Drive improvements in performance, reliability, security and developer productivity.
- Champion modern software engineering principles and continuous improvement.
- Support the evolution of platform, infrastructure and service architecture.
- Lead the evaluation and adoption of emerging technologies and AI capabilities.
- Drive the integration of AI tools and practices that enhance engineering effectiveness.
- Explore and implement modern AI-powered development workflows, coding assistants and agentic systems.
- Help shape PEXA's approach to AI innovation and organisational adoption.
- Mentor and coach engineers across all levels, from emerging talent to senior technical leaders.
- Foster a culture of technical excellence, curiosity and continuous learning.
- Lead technical discussions, knowledge-sharing initiatives and engineering communities of practice.
- Contribute to hiring and technical assessment processes.
- Partner with Product, Design and Business leaders to align technical strategy with organisational goals.
- Translate business objectives into technical roadmaps and engineering outcomes.
- Influence decision-making at executive level through clear communication and technical insight.
- Represent PEXA externally within the technology community and industry forums.
Engineering Excellence
AI & Emerging Technology
Leadership & Mentorship
Collaboration & Business Impact
You're a highly experienced technologist who combines deep technical expertise with strategic thinking and business acumen.
You thrive on solving complex problems at scale, influencing engineering direction, and helping others grow.
You'll bring:
- Significant experience designing and delivering large-scale distributed systems.
- A track record of defining technical strategy and driving organisation-wide engineering outcomes.
- Strong experience working across multiple teams, platforms and stakeholders.
- Proven ability to balance technical excellence with commercial priorities.
- Exceptional communication skills and the ability to influence at all levels of the organisation.
- Node.js, Python and Kotlin
- Modern frontend technologies
- Cloud platforms such as AWS and Azure
- Microservices and distributed architectures
- Containerisation and cloud-native development
- Security architecture and secure software development practices
- Performance, scalability and reliability engineering
- AI-assisted software development tools such as GitHub Copilot, Claude, Cline and Amazon Q
- Agentic AI frameworks and orchestration platforms
- Modern approaches to context engineering and AI-enhanced developer productivity
- Evaluating and adopting emerging AI technologies within engineering organisations
- Experience within financial services, property technology or other regulated industries.
- Exposure to DevSecOps, Site Reliability Engineering (SRE) or Platform Engineering environments.
- Knowledge of AI frameworks and technologies including Anthropic Claude, LangGraph, Hugging Face, LiteLLM or Pydantic AI.
Technical Expertise
You'll bring deep expertise across modern software engineering practices and technologies, including:
You'll also have a strong interest in the rapidly evolving AI landscape, including:
Nice to Have
Why become a PEXArian?
Great question! Being a PEXArian is so much more than just a job. We’re a passionate, motivated and unashamedly enthusiastic bunch at PEXA – we love what we do and we’re proud to admit it! Creating brilliant experiences for our members and their clients wouldn’t be possible without ensuring we deliver an exceptional employee experience.
Here’s a snapshot of what your life at PEXA could look like:
Your growth:
We encourage you to hit your personal and professional learning and development goals with our tailored programs and tools.
Your wellness:
We care about your holistic wellbeing
Your work/life blend:
We know that work is just one aspect of your life – we want to help you create your ideal work/life blend, rather than squeezing in life around work.
Sounds like you?
We at PEXA are ready so if this role sounds like you apply today.
To be conducted as part of post offer employment checks:
The personal information we have collected from you will be shared with Cifas who will use it to prevent fraud, other unlawful or dishonest conduct, malpractice, and other seriously improper conduct. If any of these are detected, you could be refused certain services or employment. Your personal information will also be used to verify your identity. Further details of how your information will be used by us and Cifas, and your data protection rights, can be found at [Cifas].
GDPR Compliance
Digital Completion UK Limited (trading name “PEXA”), Optima Legal Services Limited (trading name "Optima Legal") and Smoove Limited (a holding company which comprises of the following wholly owned trading Subsidiary companies: United Legal Services Limited, Legal-Eye Limited, and Amity Law Limited) are all owned directly by DigCom UK Holdings Limited, which is a wholly owned Subsidiary of PEXA Group Limited in Australia (ACN 140 677 792; ASX: PXA) (referred to collectively as “PEXA Group”).
When we process your applicant personal data for recruitment purposes, we do so as a controller. If as part of the recruitment process, we share your personal data with another company within the PEXA Group, that company may process your personal data as either an independent controller or, in certain circumstances, a joint controller. By applying for this role, you consent to us processing your personal data in accordance with the UK General Data Protection Regulation ("UK GDPR") and the Data Protection Act 2018, and further information can be found in our privacy notice https://pexa.co.uk/applicant-policy/.
#PEXAUK
PEXA has developed a pioneering digital settlement platform that transforms the property settlement process in Australia, moving it from a cumbersome paper-based system to a streamlined digital experience. Serving over 20,000 customers each week, we simplify home ownership and transactions while expanding our innovation to the UK property market.
Principal Software Engineer