Software Engineer (Full STack)

re-zoo-me; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

re-zoo-me in Singapore is seeking a seasoned Software Engineer (Full Stack) to join our team. The role requires hands-on experience across frontend and backend, with a focus on .NET Core, Java, and modern microservices.

You will design, implement, and maintain microservices, optimize data access with EF, and leverage Docker and AWS for scalable deployments. Collaboration with UX/UI and QA is essential for delivering robust solutions.

Qualifications

• 5+ years of hands-on full-stack experience.
• Proficient in .NET Core stack, C#, and Java.
• Experience building microservices and event-driven patterns.
• EF for database management experience.
• Docker/containerization knowledge.
• DDD principles applied in backend development.
• OAuth authentication/authorization experience.
• AWS services (S3, Lambda, API Gateway, RDS) experience.
• Frontend tech: HTML, CSS, JavaScript, ASP.NET WebForms.
• Unit tests and design systems with Storybook.
• Experience with legacy .NET Framework 4.x migrations.
• Oracle DB experience and SQL optimization.
• IIS/Windows Server deployment/config transforms.
• Quarkus for cloud-native microservices.

Responsibilities

• Design, develop, and maintain microservices architecture using .NET Core and Java.
• Implement event-driven communication between microservices.
• Utilize EF for efficient database interactions and management.
• Containerize applications using Docker for scalability and deployment flexibility.
• Apply DDD principles to ensure clean, modular code architecture.
• Implement OAuth for secure authentication and authorization.
• Develop and enforce security best practices across the stack.
• Utilize AWS services for backend development and hosting.
• Develop RESTful API endpoints for frontend-backend communication.
• Apply Spec Driven Development (SDD) concepts with Claude AI technologies.
• Support and migrate legacy .NET Framework apps as appropriate.
• Manage hosting and deployment on IIS/Windows Server with config transforms.

Skills

NET Core

C#

Java

Microservices

Docker

DDD

OAuth

AWS

EF

WebForms

REST APIs

Unit Testing

Storybook

OpenTelemetry

Oracle DB

IIS

Tools

Docker

AWS

OpenTelemetry

Quarkus

Oracle DB

IIS/Windows Server

Node.js

Job description

We're Hiring: Software Engineer (Full Stack)!

We are looking for an experienced and versatile Full Stack Software Engineer to join our dynamic team. The ideal candidate will bring at least 5 years of hands‑on experience in both frontend and backend development, with a passion for building robust, scalable solutions that drive business success.

Location: Singapore, Singapore
Work Mode: Work from Office
Role: Software Engineer (Full Stack)

What You’ll Do:

Key Responsibilities

• Design, develop, and maintain microservices architecture using .NET Core, .NET 8 and Java.
• Implement event-driven architecture to enable seamless communication between microservices.
• Utilize Entity Framework (EF) for efficient database interactions and management.
• Containerize applications using Docker for scalability and deployment flexibility.
• Apply Domain-Driven Design (DDD) principles to ensure clean and modular code architecture.
• Implement OAuth for secure authentication and authorization.
• Develop and enforce security best practices to safeguard sensitive data and systems.
• Utilize AWS services such as S3, Lambda, API Gateway, RDS, etc., for backend development.
• Develop RESTful APIs endpoints to facilitate communication between the frontend and backend.
• Apply Spec Driven Development (SDD) concepts in development of code via Claude AI technologies.
• Support and maintain legacy .NET Framework (4.x) applications, including migration pathways to modern .NET where applicable.
• Manage application hosting and deployment on IIS and Windows Server environments, including environment‑specific configuration management using config transformations.

Frontend Development

• Develop responsive and user-friendly web applications using ASP.NET, including WebForm applications.
• Generate and review unit tests using generative AI to ensure code quality and reliability.
• Create reusable UI components and maintain a consistent design using Storybook.
• Collaborate closely with UX/UI designers to implement intuitive and visually appealing interfaces.
• Troubleshoot and debug issues across the stack, ensuring smooth application operation.
• Optimize application performance and scalability for a seamless user experience.

What we are looking for

Requirements

• Proven professional experience working on .NET Core stack.
• Strong proficiency in .NET Core, .NET 8, C#, Java and related backend technologies.
• Experience building microservices architecture and implementing event-driven design patterns.
• Proficiency in Entity Framework (EF) for database management.
• Familiarity with Docker and containerization principles.
• Knowledge of Domain-Driven Design (DDD) principles and their application in backend development.
• Experience implementing OAuth for authentication and authorization.
• Understanding of security best practices and their application in backend development.
• Hands‑on experience with AWS services such as S3, Lambda, API Gateway, RDS, etc.
• Proficiency in frontend technologies such as HTML, CSS, and JavaScript, ASP.NET and WebForms.
• Experience writing unit tests and maintaining a design system with Storybook.
• Strong problem‑solving skills and attention to detail.
• Excellent communication and collaboration skills.
• Knowledge and experience in utilizing generative AI to develop and review codes via Spec Driven Development (SDD).
• Hands‑on experience with legacy .NET Framework (4.x) applications, including maintenance and incremental modernisation.
• Experience with Oracle databases, including query optimisation and integration with .NET applications.
• Proficiency in deploying and configuring applications on IIS and Windows Server, with working knowledge of Web.config transformations for environment‑specific deployments.
• Hands‑on experience with Java Quarkus framework, including building and deploying cloud‑native microservices, with working knowledge of OpenTelemetry for distributed tracing and observability.

Preferred Qualifications:

• Preferably more than 5 years of experience as a full stack software engineer.
• Experience working in both Unix and Windows operating environments are preferred.
• AWS certification (e.g., AWS Certified Developer, AWS Certified Solutions Architect).
• Experience with Node.js for server-side development.
• Familiarity with RDS databases such as MSSQL.
• Knowledge of CI/CD pipelines and DevOps practices.
• Understanding of Agile development methodologies.
• Experience with event-driven development patterns and architectures, as well as frontend development using React or other Single Page Application (SPA) frameworks.