Zellers

Engineering and SRE Lead (Backend)

Zellers • GB
Java Hybrid
We believe that businesses of all sizes deserve better financial and payment products and services. Traditionally, businesses of all sizes are let down by slow applications, protracted onboarding, opaque pricing, restrictive contracts and forced to use outdated solutions that no longer meet the innovative requirements of modern business. 

We started our journey four years ago, and have since helped tens of thousands of Australian businesses reduce the complexity and time taken to take and make payments, manage complex fleets of payment hardware, store and save money and lead the conversation in business-to-business fintech. We’re now taking our next steps in expanding our industry and world leading capabilities into the United Kingdom.

Our company is backed by leading global VCs, and brings together experienced payment and tech industry professionals who are aiming to redefine business banking and the way businesses get paid by their customers.

If you are passionate, curious, hungry and seeking an opportunity to make your mark on Fintech in the United Kingdom, with the strength of a global team behind you - we’d love to talk to you. This is a unique opportunity to shape, direct and build better financial services for all UK businesses.

Role Description

As our Backend Engineering Lead, you will be responsible for a wide range of critical backend systems, including our Payment Gateway, Settlement, Transaction Fraud Monitoring, Datalake Service, and Core Banking System. You'll oversee their development, deployment, and ongoing enhancements, while also ensuring their reliability, performance, and stability in production.
This hybrid role requires a unique blend of software engineering and a deep Site Reliability Engineering (SRE) mindset. You’ll use your expertise in software, systems, and cloud engineering to tackle complex production challenges, drive automation, and ensure our services are both innovative and exceptionally dependable.

To excel in this role, you should be a people-oriented leader who is easy to work with, adaptable, and flexible, all while maintaining high standards. You will have extensive experience in software engineering, DevOps, project management, incident management, and team and stakeholder management. You'll also be comfortable managing a mix of direct reports and shared teams, and will be supported by our global teams of engineers, QAs, SREs, and DevOps professionals.

Responsibilities

  • Oversee the end-to-end development, enhancement, and agile deployment of all UK backend systems.
  • Collaborate with the Global Technical Committee to contribute to and adopt best practices, platform codes, and frameworks.
  • Manage suppliers and stakeholders to deliver on business requirements through system enhancements and maintenance. Ensuring high availability in production systems is a critical responsibility of this role.
  • Own the availability, scalability, latency, and performance of mission-critical services, managing and upholding a 99.999% SLA.
  • Design, write, and deliver software and automation to improve system reliability and reduce manual procedures.
  • Build robust automation for monitoring, and proactive issue detection to prevent problem recurrence.
  • Lead the incident management process, conduct blameless post-mortems, and drive corrective actions to ensure continuous improvement.
  • Skills & Experiences

  • Minimum of a Bachelor degree in software engineering (or related)
  • 4+ years of working experience in a technical hands-on software engineering role
  • 2+ years of working experience in a technical leadership role
  • Demonstrable experiences in developing mission-critical systems
  • AWS Technologies (e.g. ECS, DynamoDB, Lambda, Aurora, SQS, SNS, VPC, Private Link, etc.)
  • Multi-threading & Socket Programming: Java + Spring Applications
  • Typescript and Node.js Applications
  • Architectures - Event Sourcing, CQRS, Polyglot Database, Traditional OLTP, OLAP
  • DevOps - Provisioning-based Infrastructure-as-Code, CI/CD
  • QA - Practical TDD, BDD
  • Experiences in payment domains
  • Proven track record in developing and maintaining mission-critical, high-load production systems with 99.999% SLA
  • Proven experience in supporting rapid and agile product deployments across different environments - dev, test, stress-testing, staging/production.
  • Motivational team management
  • Cost control
  • Bonus points

  • Experience in working within a high-growth environment in the financial services or fintech industry
  • Experience in other cloud platforms (Azure, Google)
  • Experience in other programming languages
  • Experience with financial regulations and compliance requirements (e.g. GDPR, PCI-DSS)