Fullstack Engineer

PT Abadi Sejahtera Finansindo (Singa Fintech); Tangerang; On-site; IDR 200,880,000 - 357,120,000; Full time

Job summary

PT Abadi Sejahtera Finansindo (Singa Fintech) is seeking a Fullstack Engineer to design, develop, and maintain web applications across frontend and backend. You will work with the IT team to build scalable solutions, optimize existing apps, and ensure proper deployment and operation.

The role requires 3+ years of experience, strong CS fundamentals, and hands-on Golang, PHP, and Laravel skills. Excellent communication in English and a team-oriented mindset are essential.

Qualifications

• Bachelor’s degree in CS/IT or related field.
• 3+ years of professional software experience.
• Strong understanding of Data Structures, Algorithms and CS fundamentals.
• Hands-on experience with Golang.
• Experience with PHP and Laravel.
• Good understanding of HTTP, Web Services and RESTful APIs.
• Good knowledge of SQL queries and databases.
• Strong communication and interpersonal skills.
• Team-oriented with a positive attitude.
• Good command of English.

Responsibilities

• Design, develop, and maintain web applications across frontend and backend.
• Write clean, scalable, maintainable code.
• Optimize existing applications for performance and reliability.
• Ensure proper deployment and functioning of web apps.
• Participate in design discussions and code reviews.
• Identify challenges and implement effective solutions.
• Collaborate with team throughout the development lifecycle.

Skills

Golang

PHP

Laravel

RESTful APIs

SQL

English

Education

Bachelor’s degree in Computer Science / IT or related field

Job description

We are looking for a Fullstack Engineer to join our IT team and play a key role in designing, developing, and maintaining high-quality web applications across both frontend and backend systems.

You will work closely with the engineering team to build scalable solutions, optimize existing applications, solve technical challenges, and ensure applications are properly deployed and functioning.

What You’ll Do

• Design, develop, and maintain new and existing web applications across frontend and backend.
• Write clean, high-quality, scalable, and maintainable code.
• Continuously optimize existing applications to improve design, performance, and reliability.
• Ensure web applications are properly deployed, implemented, and functioning.
• Participate in technical design discussions and code reviews.
• Identify technical challenges and propose and implement effective solutions.
• Collaborate effectively with team members throughout the development lifecycle.

What We’re Looking For

• Bachelor’s degree or above in Computer Science, Information Technology, or a related field.
• 3+ years of professional experience in the software industry.
• Strong understanding of Data Structures, Algorithms, and Computer Science fundamentals.
• Hands-on experience with Golang.
• Experience with PHP and Laravel.
• Good understanding of HTTP, Web Services, and RESTful APIs.
• Good knowledge of SQL queries and databases.
• Strong communication and interpersonal skills.
• Ability to work collaboratively in a team with a positive attitude.
• Good command of English.

Technical Skills

API & Web: HTTP, Web Services, RESTful API

Database: SQL

Fundamentals: Data Structures, Algorithms, Computer Science

Hiring Process

• HR Screening Call – Background, communication skills, career aspirations, and culture fit.
• Technical Interview – Deep dive into Data Structures, Golang/Laravel, React, API integration, and SQL.
• Live Coding / Technical Assessment – Practical problem-solving, code quality, and algorithm assessment.
• User Interview & Culture Fit – Team alignment, project workflow, and offer discussion.

Why Join Us?

Join a collaborative IT team where you can work across the full technology stack, solve meaningful technical challenges, and contribute directly to the development and optimization of web applications.