Senior Application Developer

Aon Life; Singapore; On-site; SGD 110,000 - 160,000; Full time

Job summary

Aon is seeking a Senior Application Developer in Singapore to deliver and maintain APIs, actuarial calculation engines, and analytics SPAs using .NET, TypeScript, Angular, Python and D3.js. You will build robust services with C#, develop scalable dashboards, and collaborate with Product Owners and QA to ensure high quality releases.

The role requires 5+ years of full-stack development, strong cloud experience (AWS/Azure), Agile and DevOps practices, and a passion for staying current with

Qualifications

• 5+ years development with C#, .NET, Angular, TypeScript.
• BS or MS in Computer Science, IT or equivalent.
• Cloud (AWS, Azure), Serverless, Agile, DevOps (CI/CD) and DB tech.
• Experience in Agile environments.
• UI/UX experience is a plus.
• SQL/NoSQL databases, data modelling in analytics contexts.
• AI-enabled development workflows (e.g., Claude Code, GitHub Copilot).

Responsibilities

• Deliver and maintain APIs, actuarial calculation engines, SPAs using .NET, TypeScript, Angular, Python, and D3.js.
• Contribute to design, build, test, and maintenance; deliver solutions and resolve issues.
• Develop and maintain CI/CD pipelines as code.
• Adhere to development standards with automation tooling, Jira, and release automation.
• Collaborate with Product Owners, Scrum Masters, and Business Analysts on vision and delivery of analytics apps.
• Understand functional and non‑functional requirements and customer usage.
• Provide Level 3 support for incidents; triage bugs and patches.
• Mentor teammates and share knowledge.
• Support QA in testing and issue resolution.
• Deliver and maintain solution/process documentation.
• Report progress to SE Manager, Product Owners & Scrum Masters.

Skills

C#/.NET

Angular

TypeScript

UI/UX

AI

SQL/NoSQL

Cloud

CI/CD

DevOps

Agile

Data modelling

AI-enabled workflows

Education

BS/MS in Computer Science/IT

Tools

JIRA

GitHub Copilot

Claude Code

Job description

Senior Application Developer

Aon is in the business of better decisions

At Aon, we shape decisions for the better to protect and enrich the lives of people around the world.

As an organization, we are united through trust as one inclusive team and we are passionate about helping our colleagues and clients succeed.

What the day will look like

Delivering and maintaining APIs, actuarial calculation engines and simulation models, data assets, and single-page applications (SPAs) using technologies such as .NET, Python, TypeScript, Angular, and D3.js.

• Using C#, .NET to build API’s both for specific application use, and more general use across the platform.
• Contributing to design, build, test & maintenance activities and be genuinely motivated by delivering solutions and issue resolutions to our business
• Develop and maintain CI/CD pipelines as code
• Promote and adhere to development standards through automation tooling and manual controls incl. JIRA, agile standards, code reviews and release automation, etc
• Work with Product Owners, Scrum Masters and Business Analysts on the vision, design, requirements, and delivery of web-based analytics applications
• Develop a thorough understanding of the functional and non-functional requirements of the application, how customers use it, and how best to serve these needs
• Ensure effective operation of business systems through Level 3 support of application incidents, effectively triaging bugs, code/data fixes, testing & patching processes
• Welcome the opportunity to assist and spread knowledge to other members of the team
• Support QA in testing products and resolving found issues
• Deliver and maintain solution/process documentation to an agreed level
• Track and report on progress to Software Engineering Manager, Product Owners & Scrum Masters

Skills and experience that will lead to success

• Minimum of 5 years’ development experience with C#, .NET, Angular, TypeScript, or similar technologies.
• BS or MS degree in Computer Science, Information Technology or equivalent experience
• Keenly interested in software development, staying up to date with current trends and able to translate those into solutions.
• Experience with Cloud (AWS, Azure), Serverless Architecture, Agile, DevOps (CI/CD) and database technologies
• Experience working in Agile environments
• UI/UX experience a plus
• Working knowledge of SQL/NoSQL databases, report generation, and data modelling in analytics contexts.
• A strong interest in Artificial Intelligence, including hands‑on experience using AI‑enabled development workflows (e.g., Claude Code, GitHub Copilot).