OneByZero

Sr. Software Engineer I - Backend

OneByZero  •  Melbourne, AU (Onsite)  •  4 months ago
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Job Description


About OnebyZero


OnebyZero is a next-generation Data and AI consulting company, headquartered in Singapore and driving impact across APAC. As an AWS-exclusive partner, we help enterprises modernize data, transform with AI, and apply Generative AI in ways that deliver real business results.


Our vision is simple while at the same time ambitious: to make AI adoption both impactful and human-centered. We collaborate with leading enterprises in banking, telecommunications, retail, and other industries to help them unlock tangible value from their data and AI initiatives. By combining deep industry expertise, trusted partnerships, and a relentless focus on outcomes, OnebyZero empowers organizations to go beyond pilots and achieve lasting, scaled impact


About the Role

We are seeking a Senior Software Engineer I – Backend with 7–9 years of professional experience to lead backend development for complex, scalable systems. This role combines deep technical expertise, client-facing engagement, and leadership responsibilities. You will design, implement, and optimize backend services, drive delivery excellence, and mentor junior engineers while collaborating with cross-functional teams.

What You'll Do & The Impact You'll Have

  • Lead backend system design, estimation, and implementation efforts.

  • Build and deploy highly scalable APIs on AWS, applying best practices in networking (VPC, DNS, NLB, Cloud NAT).

  • Own and optimize CI/CD pipelines and ensure secure deployments with CORS, WAF, and IAM policies.

  • Act as the client-facing technical lead during discussions, deep-dives, and delivery presentations.

  • Guide L3–L5 engineers, review architecture decisions, and mentor team members.

  • Deliver large components/modules, ensuring reliability, maintainability, and scale.

  • Balance 50% leadership (reviews, client alignment) and 50% individual contribution (core components, POCs).


Requirements


What You'll Bring to the Table


Must-Have Skills:


  • Strong communication skills: fluent in English or a native ASEAN language

  • Expert in Python or TypeScript programming patterns

  • Experience designing and deploying scalable APIs on AWS

  • Deep understanding of networking: VPC, DNS, NLB, Cloud NAT

  • Ownership of CI/CD pipelines and secure deployment practices

  • Leadership experience: guiding engineers and reviewing architecture

  • Delivery excellence: owning large modules, client-facing responsibilities


Nice-to-Have Skills:


  • Designing cost-efficient architectures using AWS cost tools

  • Building advanced queuing pipelines (Kafka, SQS + Lambda)

  • Implementing multi-tenant backend systems

  • Establishing SOC2-aligned logging and tracing

  • Defining and enforcing REST API versioning standards


Benefits


What We Bring to the Table


  • Impact-First Culture: Your work directly contributes to real-world AI solutions and business outcomes.

  • Professional Growth: Continuous learning opportunities, mentorship from industry leaders, and a clear path for career development.

  • Competitive Compensation: Market-leading salary, benefits, and incentives.

  • Dynamic Team Environment: Collaborate with a high-performing team that values curiosity, integrity, and ownership.

  • Global Exposure: Opportunities for international travel.

OnebyZero is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
OneByZero

About OneByZero

OneByZero is a Data and AI consulting firm that delivers measurable business outcomes for enterprises.

We work with leading companies in Telecom, Banking, Retail, Travel, and Hospitality to solve real problems using modern data platforms, machine learning, and generative AI. Our teams are hands-on, outcome-focused, and deeply familiar with the operational realities of large organizations.

AI adoption today is stalled, not for lack of ambition, but because most efforts never make it past pilots. We work with clients to make AI real: tangible, production-grade, and tied to business metrics. From strategy to implementation, we focus on systems that actually run and deliver value.

We are an AWS-exclusive consulting partner. All our solutions are built and deployed on AWS, leveraging its native services to ensure scalability, security, and speed to value.

Our core areas:

• AI Coworkers & Agentic Systems: GenAI-powered agents built to take on enterprise tasks, operational, analytical, or customer-facing.

• Modern Data Stacks: Clean, governed data foundations that support analytics, personalization, and operational automation.

• CVM & Revenue Growth: Agentic CVM platforms, dynamic pricing, campaign ideation and execution, and next-best-action engines that improve ARPU and LTV.

We’re headquartered in Singapore, with teams across APAC and India. Our culture values clarity, ownership, and technical excellence. We hire people who care about quality and are motivated by hard problems.

Industry
IT & Software
Company Size
51-200 employees
Headquarters
Singapore, SG
Year Founded
2023
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