Senior Backend Software Engineer

Senior Backend Software Engineer ( Lumen Dynamics ClickSend) ClickSend is business communications software, enabling companies of all shapes and sizes to easily send and receive SMS, MMS, Rich Media, Email, Voice and even Post worldwide via our very intuitive web app, much loved API docs and thousands of integration partners. ClickSend has SMS at its core and powers billions of messages worldwide but has expanded to offer a richer suite of products, providing choice and context to business communications. ClickSend is a SaaS product (well, more a CPaaS) focused on the SMB sector and has thousands of new customers sign up to its platform each month, and it’s growing year on year. ClickSend is a global company, part of the Lumen Dynamics Group with a strong foothold in Australia/NZ, USA/Canada and UK/Europe, but is used, and loved, by businesses all around the world. As a Senior Backend Engineer, you’ll join one of our product engineering squads and help ClickSend build our exciting new modern messaging platform. As a Senior Engineer, you’ll provide deep technical leadership within and beyond your team, ensuring and growing the teams to deliver high quality solutions to our customers continuously and rapidly. Key Responsibilities Provide technical leadership and direction to enable the team to ship secure, reliable, well-tested, and maintainable code to our customers Take initiative to mentor and upskill colleagues through constructive feedback during code reviews, architectural decisions, and non-functional concerns including security, privacy, and performance Help drive the direction and priorities of the team, actively seeking ways to better support stakeholders and break down work effectively Recognised as a leader and clear expert in technical areas and components owned by the team Be a strong role model who demonstrates collaboration, accountability, and technical excellence Lead end-to-end delivery of work — from technical design and architecture through to production deployment and support Independently architect and deliver complex, scalable solutions across a wide variety of situations Champion quality within the team and establish processes to improve it over time The successful applicant will possess the following skills and attributes Minimum 7 years of software engineering experience with a proven track record of shipping and maintaining production software At least 3 years of recent, hands-on experience with NodeJS and TypeScript Strong knowledge of backend ecosystems including SQL/NoSQL databases, messaging brokers (e.g., SQS, RabbitMQ), and common software design patterns Proven AWS expertise across core services including ECS/Fargate, Lambda, EC2 DynamoDB/RDS/Aurora, SQS/SNS/Kinesis etc Hands-on experience architecting end-to-end systems — translating business requirements into full technical designs covering API design, data models, and infrastructure Experience designing and operating microservices and event-driven architectures built for scalability, resilience, and high performance Deep testing knowledge across unit, integration, and E2E testing with hands-on experience building and maintaining automated test suites integrated into CI/CD Security-first mindset with experience building secure services and implementing best practices for observability and maintainability Actively leverages AI-powered tools (e.g., GitHub Copilot, Claude, ChatGPT) to improve productivity and accelerate development Passionate about mentoring engineers and communicating complex technical ideas clearly to both technical and non-technical stakeholders Collaborative, positive, and approachable — someone who adds to a "win together" team culture Excellent verbal and written English communication skills We dream big — for our company, our customers, and our employees — and we hire the best talent worldwide to help us bring our vision to life. We have a local presence in more than 60 countries — probably somewhere near you! We are committed to building an engaged and talented workforce that represents an environment that is inclusive, supports flexibility and welcomes diversity. Our values of Dream Big , Win Together , Keep it simple and Make it Happen are the foundation for fostering an environment where diversity of thinking, skills and experiences are embraced, delivering innovation and better business results. We value our team by offering; WORK FROM HOME: Our flexible remote work offering allows you to work from home, where you can be the most productive and successful. CELEBRATE YOU: By providing a day off for your birthday, we want you to take the time to celebrate the year your have had with your nearest and dearest. TAKE A BREAK: Enjoy a generous annual leave program. We value balance and understand that performance at work requires time to rest at home and/or rejuvenate on vacation. STAY HEALTHY: We offer comprehensive market competitive medical insurance. A variety of supplemental plans are also provided to meet your indiv