Backend Software Engineer – Go and AWS

At Toku, we create bespoke cloud communications and customer engagement solutions to reimagine customer experiences for enterprises. We provide an end-to-end approach to help businesses overcome the complexity of digital transformation and deliver mission-critical CX through cloud communication solutions. Toku combines local strategic consulting expertise, bespoke technology, regional in-country infrastructure, connectivity, and global reach to serve the diverse needs of enterprises operating at scale. Headquartered in Singapore, Toku supports customers across APAC and beyond, with a growing footprint across global markets.

This role is a hands-on backend engineering position focused on the services that power Toku’s communications platform. You will primarily work in Go to maintain and evolve backend APIs and platform modules supporting telephony capabilities such as call flows, IVR logic, and messaging services. A key part of the role involves understanding and improving existing platform services while contributing to ongoing modernisation efforts, including architectural improvements and the evolution toward event-driven systems. You will thrive in this role if you enjoy reasoning through complex systems, improving production software, and contributing to the long-term evolution of a large-scale communications platform.

What you will be doing

• Backend services & APIs: Build, maintain, and improve backend services and APIs that power Toku’s communication platform.

• Telephony platform features: Develop and support backend modules related to call flows, IVR logic, and inbound and outbound telephony functionality.

• Platform maintenance & improvement: Investigate issues, resolve defects, and incrementally improve existing services to strengthen system reliability and stability.

• Codebase comprehension: Analyse and understand existing backend systems in order to safely extend functionality and diagnose issues.

• Event-driven systems: Develop and maintain backend services that use event-driven architecture, including Kafka and AWS SQS.

• Cloud platform development: Design and operate backend services on AWS using cloud-native design principles.

• Database integration: Implement backend data interactions using relational databases, primarily AWS RDS MySQL.

• Production ownership: Monitor system behaviour, review logs, troubleshoot incidents, and maintain reliable production services.

• On-call support: Participate in an engineering on-call rotation (approximately one week every six weeks) responding to production incidents raised by NOC or internal teams.

• Platform modernisation: Contribute to ongoing improvement and redesign of platform services, supporting architectural evolution and increased adoption of event-driven systems.

• Engineering collaboration: Work closely with engineers across product engineering squads to deliver platform improvements and support adjacent initiatives.

We’d love to hear from you if you have

• Backend engineering experience: Hands-on experience building and operating backend services in production environments.

• Go (Golang): Strong practical experience developing backend systems in Go.

• Cloud platforms: Solid understanding of cloud computing fundamentals, with AWS experience strongly preferred.

• API development: Practical experience designing and implementing backend APIs and service integrations.

• Event-driven systems: Experience working with event-driven architectures using technologies such as Kafka or AWS SQS.

• Databases: Strong knowledge of relational databases, with experience using MySQL or similar SQL-based systems (AWS RDS MySQL preferred).

• Node.js exposure: Strong ability to read and understand Node.js codebases when working with existing services.

• Code comprehension ability: Strong ability to understand complex systems and reason through unfamiliar codebases.

• Production systems experience: Experience supporting or operating backend services in real-world production environments.

• System improvement mindset: Interest in understanding existing systems deeply and contributing to platform modernisation initiatives.

• Domain experience (bonus): Exposure to SaaS platforms, communications platforms (CCaaS / CPaaS), or telephony-related systems is advantageous.

• Regulated environment exposure (bonus): Experience working on government-regulated systems or Government Commercial Cloud (GCC) environments is beneficial.

• On-call readiness: Willingness to participate in a shared on-call rotation supporting production services.

• Location: This role is mainly remote - work from home with occasional office visits (CBD area), based in Singapore, and requires candidates to be located in Singapore.

• Experience level: Approximately 3–7+ years of backend engineering experience, with depth of capability valued more than strict years of experience.

What would you get?

Training and Development
Discretionary Yearly Bonus & Salary Review
Healthcare Coverage based on location
20 days Paid Annual Leave plus other leave allowances

Toku has been recognised as a LinkedIn Top Startup and by the Financial Times as one of APAC’s Top 500 High Growth Companies. If you’re looking to be part of a company on a strong growth trajectory while working on meaningful, real-world challenges, we’d love to hear from you.