Backend API Developer

United States Digital Space LLC; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

United States Digital Space LLC in Singapore seeks a Backend API Developer to design, implement, and support backend applications, APIs, and integrations. Collaborate across product, frontend, DevOps, QA, and other teams to deliver scalable, secure solutions with maintainable code.

The role emphasizes Java/Spring Boot, Apache Camel integrations, RESTful API development, microservices, and cloud/containerized deployments. Strong problem-solving, collaboration, and testing are expected.

Qualifications

• Degree in Computer Science, Information Technology, Engineering, or related discipline, or equivalent practical experience.
• Hands-on experience with Java and Spring Boot development.
• RESTful API development, DI, and security concepts.
• Experience using Apache Camel and EIP for integration.
• Knowledge of microservices and distributed systems.
• SQL and/or NoSQL databases exposure.
• Familiarity with Kafka, ActiveMQ, RabbitMQ.
• Docker and Kubernetes experience for deployment and scalability.
• Version control with Git; CI/CD concepts and pipelines.
• Cloud platform exposure (AWS/Azure/GCP) and Spring Cloud basics.
• Observability with Prometheus, Grafana, ELK stack.

Responsibilities

• Design, develop, and maintain backend services using Java and Spring Boot.
• Build, configure, and support system integrations and messaging workflows using Apache Camel.
• Develop and maintain RESTful APIs with a focus on scalability, performance, security, and maintainability.
• Collaborate with product, frontend, DevOps, QA, and other teams to deliver end-to-end solutions.
• Write clean, well-documented code following coding standards and best practices.
• Develop and execute unit tests, integration tests, and support automated testing.
• Troubleshoot production issues and implement timely resolutions.
• Participate in code reviews and drive continuous improvement initiatives.
• Support deployment, monitoring, and operational activities in cloud and containerized environments.
• Assist in maintaining application reliability, availability, and performance.

Skills

Java

Spring Boot

REST APIs

Apache Camel

Microservices

SQL/NoSQL

Kafka/Messaging

Docker

Kubernetes

Cloud basics

Git

CI/CD

Agile/Scrum

Security concepts

Spring Cloud

Observability

Education

Degree in Computer Science / IT / Engineering, or equivalent

Tools

Docker

Kubernetes

Git

Prometheus

Grafana

ELK Stack

Kafka

ActiveMQ/RabbitMQ

Job description

Job Description

We are seeking a Backend API Developer to design, develop, and support backend applications, APIs, and integration services. The successful candidate will work closely with cross‑functional teams to deliver reliable, scalable, and secure solutions while contributing to the continuous improvement of software development and delivery practices.

Job Description - Grade Specific

• Design, develop, and maintain backend services using Java and Spring Boot
• Build, configure, and support system integrations and messaging workflows using Apache Camel
• Develop and maintain RESTful APIs and backend components with a focus on scalability, performance, security, and maintainability
• Collaborate with product, frontend, DevOps, QA, and other technical teams to deliver end‑to‑end solutions
• Write clean, maintainable, and well‑documented code in accordance with established coding standards and best practices
• Develop and execute unit tests, integration tests, and support automated testing initiatives
• Troubleshoot application and production issues and implement timely resolutions
• Participate in code reviews and contribute to technical discussions and continuous improvement initiatives
• Support deployment, monitoring, and operational activities in cloud and containerized environments
• Assist in maintaining application reliability, availability, and performance

Skills and Qualifications

• Degree in Computer Science, Information Technology, Engineering, or a related discipline, or equivalent practical experience
• Experience in backend software development using Java
• Hands‑on experience with Spring Boot, RESTful API development, dependency injection, and application security concepts
• Experience using Apache Camel and Enterprise Integration Patterns (EIP) for application and system integration
• Knowledge of microservices architecture and distributed applications
• Experience working with SQL and/or NoSQL databases
• Familiarity with messaging technologies such as Kafka, ActiveMQ, RabbitMQ, or similar platforms
• Understanding of software design principles, development methodologies, and backend engineering best practices
• Familiarity with version control systems such as Git
• Understanding of CI/CD concepts and software delivery processes
• Strong analytical, problem‑solving, and communication skills
• Ability to work collaboratively with stakeholders across business and technology teams
• Experience with Docker and Kubernetes
• Exposure to cloud platforms such as AWS, Microsoft Azure, or Google Cloud Platform (GCP)
• Knowledge of Spring Cloud, API gateways, service discovery, or service mesh technologies
• Familiarity with security standards and protocols, including OAuth 2.0, JWT, and TLS
• Experience with monitoring, observability, and logging tools such as Prometheus, Grafana, and ELK Stack
• Experience working in Agile or Scrum environments
• Exposure to capital markets, trading platforms, financial services, or related domains is advantageous