Fullstack Application Engineer

USER EXPERIENCE RESEARCHERS PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

USER EXPERIENCE RESEARCHERS PTE. LTD. is seeking a seasoned software engineer to design, develop, and maintain scalable web applications across frontend and backend stacks.

You will work with React or Angular on the frontend, Java or Node.js on the backend, and deploy cloud-native services on Azure, using Docker, Kubernetes, and GitLab for CI/CD. Collaboration with product teams and security specialists is essential.

Qualifications

• Strong experience with modern frontend technologies (HTML5, CSS3, JavaScript/TypeScript with React or Angular).
• Experience building backend services and REST APIs using Java or Node.js.
• Familiarity with microservices architecture and event-driven integrations.
• Experience with cloud and DevOps practices on Microsoft Azure.
• Knowledge of secure coding practices and security controls.

Responsibilities

• Design, develop, test, and maintain modern web applications using frontend and backend tech.
• Build responsive interfaces with HTML5, CSS3, JavaScript/TypeScript and frameworks.
• Develop and maintain backend services and REST APIs supporting integration.
• Implement event-driven integrations using messaging platforms like RabbitMQ / Azure Service Bus.
• Deploy cloud-native apps on Azure and manage containers with Docker and Kubernetes.
• Collaborate with product, design, and AI engineers to deliver enterprise solutions.
• Ensure security, scalability, and observability of applications.

Skills

HTML5

CSS3

JavaScript / TypeScript

React

Angular

Java

TypeScript (Node.js)

REST API development

Microservices architecture

RabbitMQ

Azure Service Bus

Kafka

Kubernetes

Docker

GitLab

Secure coding

Tools

Azure Kubernetes Service (AKS)

APIM

Application Gateway

Azure Key Vault

Job description

Key Responsibilities:

• Design, develop, test, and maintain modern web applications using contemporary frontend and backend technologies.
• Build highly responsive and user-friendly interfaces using HTML5, CSS3, JavaScript, and modern frameworks such as React.
• Develop scalable backend services and microservices using Java and/or TypeScript (Node.js).
• Design, build, and maintain REST APIs to support application functionality and system integration.
• Ensure applications are secure, scalable, maintainable, and aligned with enterprise development standards.

System Integration & Data Services

• Develop and maintain integrations between the FM Platform and enterprise systems through APIs, messaging services, and data services.
• Implement event-driven integrations using messaging technologies such as RabbitMQ, Azure Service Bus, or similar platforms.
• Support data exchange, synchronization, and workflow integration across multiple applications and business domains.
• Troubleshoot and resolve cross-system integration issues, ensuring reliable and efficient operations.
• Work with shared platform services such as authentication, notifications, workflow, scheduling, and common APIs.

Cloud Engineering & DevOps

• Deploy and maintain cloud-native applications on Microsoft Azure.
• Support containerized workloads using Docker and Kubernetes.
• Work with Azure services including Azure Kubernetes Service (AKS), API Management (APIM), Application Gateway, and Azure Key Vault.
• Contribute to CI/CD pipelines to automate build, testing, deployment, and release processes.
• Maintain source code repositories and development workflows using GitLab.

Security & Reliability

• Implement secure coding practices and enterprise security controls.
• Manage security configurations including TLS certificates, secrets management, and authentication mechanisms.
• Monitor application performance, reliability, and operational health.
• Participate in troubleshooting, root cause analysis, and continuous improvement activities.

Product Collaboration & Delivery

• Work closely with product managers, service designers, technical leads, and business stakeholders to understand business workflows and user needs.
• Participate in discovery, solution design, prototyping, and implementation activities.
• Translate business requirements into well-designed technical solutions.
• Contribute to Agile ceremonies, technical reviews, and release planning activities.
• Support application modernization and migration initiatives within the FM ecosystem.
• Collaborate with AI engineers to integrate AI-powered capabilities into business applications where required.

Required Qualifications

Frontend Development

• Strong experience with:
• HTML5
• CSS3
• JavaScript / TypeScript
• React or Angular

Backend Development

• Experience developing enterprise applications using:
• Java
• TypeScript (Node.js)
• REST API development
• Microservices architecture
• Integration & Data
• Experience integrating applications using APIs and messaging technologies.
• Knowledge of event-driven architectures.
• Experience with RabbitMQ, Azure Service Bus, Kafka, or equivalent platforms.
• Familiarity with database management and data integration concepts.

Cloud & DevOps

• Experience with:
• Microsoft Azure
• Kubernetes
• Docker
• CI/CD pipelines
• GitLab

Security

• Understanding of:
• Secure software development practices
• TLS and certificate management
• Identity and access management concepts
• Secrets management (e.g. Azure Key Vault)

Preferred Qualifications

• Experience developing applications within large enterprise or government environments.
• Experience with workflow-based systems, case management systems, or operational business applications.
• Experience supporting application migration, modernization, or digital transformation initiatives.
• Exposure to service design, user research, or product-led development practices.