Senior Software Development Engineer

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

Job summary

HackerTrail is seeking a Senior Software Development Engineer in Singapore and across Asia-Pacific regions to own design and delivery of large-scale systems. You will drive architecture, lead technical workstreams, and ensure scalable, secure production software on AWS while mentoring engineers and collaborating with client stakeholders.

The role emphasizes hands-on development, design ownership, and leveraging AI-assisted tooling to improve productivity, testing, and delivery execution in

Qualifications

• 6–10 years delivering production-grade software at scale.
• Strong Python and/or modern language skills with system design expertise.
• Proven ownership of architecture and end-to-end delivery of complex systems.
• Extensive AWS experience across compute, networking, security, and data services.
• Experience mentoring engineers and leading technical workstreams.
• Able to work directly with client stakeholders in enterprise environments.

Responsibilities

• Own design and delivery of large-scale systems and platform components.
• Lead technical workstreams and set direction for a team or module.
• Drive architecture reviews, designs, and solution documentation.
• Build and operate scalable, secure production systems on AWS.
• Establish CI/CD, testing strategies, observability, and DevSecOps practices.
• Mentor engineers and collaborate with architects and client stakeholders.

Skills

Python

AWS

System design

CI/CD

DevSecOps

Mentoring

Stakeholder mgmt

Tools

CI/CD tooling

Monitoring

Observability

Job description

About the role

Senior Software Development Engineer Location: Singapore, Indonesia, Philippines, Vietnam, Thailand, India, ANZ, or Japan Reports to: Delivery Leadership / Engineering Leadership Experience: 6 to 10 Years The Role The Senior Software Development Engineer, a Senior Engineer, owns large systems and technical workstreams within OBZ delivery engagements. The Senior Software Development Engineer drives architecture, design, and delivery of complex production software for enterprise AI systems in regulated environments, and provides technical leadership to engineering teams. This role combines deep hands-on engineering with design ownership, mentorship, and direct engagement with client stakeholders. At OBZ, all engineers are expected to use AI tools effectively in their daily work. AI assistants and workflow automation tools are expected to improve engineering productivity, testing, debugging, documentation, and delivery execution. What You Will Do Own the design and delivery of large-scale systems, services, and platform components. Lead technical workstreams within engagements and set technical direction for a team or module. Drive architecture reviews, low-level and high-level designs, and solution documentation. Build and operate production systems on AWS, ensuring scalability, security, and reliability. Establish engineering standards, CI/CD, testing strategies, observability, and DevSecOps practices. Mentor and grow engineers through reviews, guidance, and technical coaching. Partner with architects, delivery leads, and client stakeholders on technical decisions. Identify and resolve complex production and performance issues. Contribute reusable engineering assets, accelerators, and frameworks across delivery teams. Champion effective use of AI tools across the engineering team.

What you'll bring

What We Are Looking For We seek candidates with the following experience and skills: 6 to 10 years of experience delivering production-grade software at scale. Deep engineering capability in Python and/or other modern languages, with strong system design skills. Proven experience owning architecture and delivery of complex systems end-to-end. Strong AWS expertise across compute, networking, security, and data services. Expertise in CI/CD, testing, observability, DevSecOps, and production operations. Experience mentoring engineers and leading technical workstreams. Ability to work directly with client stakeholders in enterprise delivery environments. What Sets You Apart You have architected and delivered production systems in regulated or high-scale enterprise environments. Experience with AI/LLM systems, agentic frameworks, or data platforms. You have introduced engineering practices, tooling, or frameworks adopted across teams. You combine strong engineering execution with effective stakeholder communication.

Benefits and perks

What We Offer Competitive compensation aligned to market standards. Opportunities to work on enterprise-scale AI transformation programmes across Asia Pacific. Exposure to advanced AI tooling, AWS partnership ecosystems, and regulated-industry engineering delivery. OneByZero is an equal opportunity employer committed to building a diverse and inclusive workplace.