Contract Full-Stack Engineer: ReactJS + Hack & GraphQL

OPTIMUM SOLUTIONS (SINGAPORE) PTE LTD; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

OPTIMUM SOLUTIONS (SINGAPORE) PTE LTD is seeking a Software Engineer (Full Stack) to join its Business Support Engineering team in Singapore. The role focuses on resolving complex technical issues, enhancing product features, and building tools for global telecom and mobile operator partners.

This is a contract ending in August 2027. You will design, develop and maintain front-end interfaces, backend systems, APIs and data pipelines, collaborating with regional teams in Singapore, the US and

Qualifications

• 3-5 years of software engineering experience, including full-stack development.
• Proficiency in JavaScript and ReactJS; experience building modern web UIs.
• Experience with PHP/Hack and GraphQL for backend/API work.
• Foundational SQL knowledge; experience with databases and data handling.
• Experience through the SDLC: design, develop, test, debug, deploy.
• Strong problem-solving and analytical skills; able to troubleshoot complex issues.
• Experience collaborating with cross-functional teams and communicating technical concepts.
• Familiarity with Python, Spark, data pipelines or large-scale data processing; familiarity with Angular/Vue.js.

Responsibilities

• Provide Level 3 technical support by troubleshooting and resolving complex issues.
• Develop and implement full-stack enhancements, bug fixes and product improvements.
• Collaborate with Technical Leads, PMs, Designers and cross-functional teams to define requirements.
• Design, develop and maintain front-end interfaces, backend systems and APIs.
• Build and enhance user interfaces using ReactJS and Bloks or similar frameworks.
• Develop and maintain middle-tier APIs to integrate back-end systems with front-ends.
• Work with data pipelines and dashboards to support product analytics.
• Prepare technical design proposals ensuring scalable, maintainable solutions.
• Develop automated tools to improve operational efficiency and reduce issues.
• Participate in rotations and collaborate with regional teams across locations.

Skills

JavaScript

ReactJS

PHP/Hack

GraphQL

SQL

Python

Spark

Data pipelines

APIs

Troubleshooting

Job description

OPTIMUM SOLUTIONS (SINGAPORE) PTE LTD is seeking a Software Engineer (Full Stack) to join its Business Support Engineering team in Singapore. The role focuses on resolving complex technical issues, enhancing product features, and building tools for global telecom and mobile operator partners.

This is a contract ending in August 2027. You will design, develop and maintain front-end interfaces, backend systems, APIs and data pipelines, collaborating with regional teams in Singapore, the US and