Software Developer - TSB

Certis; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

Certis is seeking a Platform Software Developer to design, develop, and support the Security enterprise platform. You will work across web apps, microservices and data services with a focus on secure, scalable software.

The role covers full-stack development, API integrations, and real-time features, with emphasis on secure coding, testing and deployment in cloud and on-prem environments.

Qualifications

• Degree or diploma in Computer Science, Software Engineering, Information Technology or related discipline, or equivalent practical experience.
• 3+ years of professional software development experience; stronger independent design and troubleshooting capability for Senior level.
• Hands-on experience developing modern web applications, APIs or distributed enterprise systems.
• Good understanding of software engineering principles, clean code, testing, source control and secure development practices.
• Ability to understand business requirements and translate into practical technical solutions.
• Good communication, problem-solving and teamwork skills.

Responsibilities

• Develop and maintain web applications and microservices using React/TypeScript and ASP.NET Core/C#.
• Build REST APIs, backend services, real-time features and event-driven integrations.
• Develop reusable capabilities across services and modules, ensuring consistency, scalability, and maintainability across the platform.
• Work with PostgreSQL/SQL Server, Redis and messaging technologies such as NATS, Kafka or RabbitMQ.
• Implement authentication and authorization using OAuth2/OIDC, RBAC and secure coding practices.
• Support Docker and Kubernetes-based deployments across cloud and on-premises environments.
• Write clean, testable and maintainable code, including appropriate unit and integration tests.
• Troubleshoot application, integration, database, messaging and deployment issues.
• Participate in requirement refinement, technical design, code review, testing and release activities.
• Work closely with architects, product owners, QA, DevOps and project teams to deliver features from requirement through release.
• Maintain relevant API, configuration and technical documentation.

Skills

C#

ASP.NET Core

Web API

PostgreSQL

SQL Server

Redis

NATS

Kafka

RabbitMQ

Docker

Kubernetes

Git

CI/CD

OAuth2/OIDC

RBAC

IAM

Grafana/Prometheus

ELK/Loki

CloudWatch

Education

Degree or diploma in Computer Science, Software Engineering, Information Technology or related discipline

Tools

NATS

Kafka

RabbitMQ

Docker

Kubernetes

Git

CI/CD

Grafana

Prometheus

ELK

Job description

Select how often (in days) to receive an alert: CREATE ALERT

Business Unit: Digital Services - Front Office

About Certis

Life at Certis

Duties & Responsibilities

Role Summary

The Platform Software Developer is responsible for developing, enhancing and supporting Certis’ Security enterprise platform. The role involves full-stack development across web applications, microservices, APIs, real-time messaging, integrations and data services, with a strong focus on secure, scalable and maintainable software.

Responsibilities

• Develop and maintain web applications and microservices using React/TypeScript and ASP.NET Core/C#.
• Build REST APIs, backend services, real-time features and event-driven integrations.
• Develop reusable capabilities across services and modules, ensuring consistency, scalability, and maintainability across the platform.
• Work with PostgreSQL/SQL Server, Redis and messaging technologies such as NATS, Kafka or RabbitMQ.
• Implement authentication and authorization using OAuth2/OIDC, RBAC and secure coding practices.
• Support Docker and Kubernetes-based deployments across cloud and on-premises environments.
• Write clean, testable and maintainable code, including appropriate unit and integration tests.
• Troubleshoot application, integration, database, messaging and deployment issues.
• Participate in requirement refinement, technical design, code review, testing and release activities.
• Work closely with architects, product owners, QA, DevOps and project teams to deliver features from requirement through release.
• Maintain relevant API, configuration and technical documentation.

Skills & Experience

Technical Skills

• Backend: C#, ASP.NET Core, Web API and asynchronous/service-based development.
• Database: PostgreSQL and/or SQL Server; knowledge of Redis.
• Integration & Messaging: REST/JSON APIs, NATS/Kafka/RabbitMQ or equivalent messaging technologies.
• Platform: Docker, Kubernetes, Git and CI/CD pipelines.
• Security: OAuth2, OpenID Connect, equivalent IAM, RBAC and API security.
• Observability: Familiarity with logging, monitoring and tools such as Grafana, Prometheus, ELK/Loki or CloudWatch.

Qualifications & Experience

• Degree or diploma in Computer Science, Software Engineering, Information Technology or a related discipline, or equivalent practical experience.
• 3+ years of professional software development experience for Developer level; stronger independent design and troubleshooting capability is expected for Senior Developer level.
• Hands-on experience developing modern web applications, APIs or distributed enterprise systems.
• Good understanding of software engineering principles, clean code, testing, source control and secure development practices.
• Ability to understand business requirements and translate them into practical technical solutions.
• Good communication, problem-solving and teamwork skills.