Software Development Engineer III

OnebyZero .; Singapore; On-site; SGD 120,000 - 180,000; Full time

Benefits offered by this job

Competitive compensation

Professional growth & mentorship

Global exposure with APAC focus

Equal opportunity employer

Job summary

OnebyZero, a Singapore-based Data and AI consulting company, seeks a Senior Software Engineer I – Backend with 7–9 years of experience to lead backend development for complex, scalable systems.

You will design, implement, and optimize backend services, mentor engineers, and collaborate with cross-functional teams while delivering secure, reliable solutions on AWS. Join a fast-growing team in APAC.

Qualifications

• Strong programming in Python or TypeScript with solid backend patterns.
• Experience building scalable APIs on AWS with security in mind.
• Proven ability to design, review, and deliver robust backend systems.
• Experience leading engineers and guiding architecture decisions.

Responsibilities

• 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).

Skills

Python

TypeScript

AWS

API Design

CI/CD

Leadership

Tools

Kafka

SQS

Docker

Job description

Circular Road, Singapore

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
  

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.