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API Web Developer

Office: Indonesia
Other Locations: Indonesia · India · Estonia · Singapore

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About the Role

Substance is seeking an innovative and detail-oriented API Web Developer to join our talented development team. In this role, you will focus on designing, building, and maintaining robust APIs that enable seamless integration between various systems and applications. Your work will ensure that our platforms can communicate efficiently, providing a delightful user experience and fostering data interchange.

Key Responsibilities:

  • Design and develop high-performance RESTful APIs that meet both internal and external client needs.
  • Collaborate with front-end developers and other stakeholders to integrate APIs with user-facing elements.
  • Ensure the security, performance, and reliability of APIs through thorough testing and documentation.
  • Monitor and optimize API performance through analytics and user feedback.
  • Participate in the architecture process, contributing to the evolution of our technology stack and best practices.
  • Troubleshoot and resolve issues in API applications, managing bug fixes and updates as necessary.
  • Stay current with new technologies and industry trends to maintain cutting-edge APIs that drive business value.

Requirements

  • Bachelor's degree in Computer Science or a related field.
  • 2+ years of experience in API development, with a focus on designing and building RESTful services.
  • Proficiency in programming languages such as Node.js, Python, Ruby, or Java.
  • Strong understanding of API design principles and best practices, including security and versioning.
  • Experience with API documentation tools like Swagger or Postman is preferred.
  • Familiarity with database systems, both relational (MySQL, PostgreSQL) and NoSQL (MongoDB).
  • Ability to work in an Agile environment and participate in sprint planning and development cycles.
  • Excellent problem-solving skills and strong attention to detail.
  • Good communication skills, capable of working collaboratively with various teams.

Benefits

At Substance, we’re all about action, not just talk. If your profile aligns with what we need, you’ll hear from us within 1-2 weeks. If not, no fluff—just know we value your interest and will keep you in mind for future roles where your skills can make an impact. We focus on real connections and meaningful matches, so when the right opportunity comes, we’ll be ready to make it happen.

Getsubstance.co Pte. Ltd. | EA License No: 24C2398

01 Interview +

01 Interview

We’ll start by sending you an interview with some preliminary questions to get things rolling. From there, we’ll dive deeper with a screening call to verify your profile, share the details of the opportunity, and introduce you to the client’s profile. This is your time to shine, as we’ll be representing you to our clients. And don’t worry—we’ll make sure you’re fully prepared before those conversations. We value your time, so expect to hear back from us within 1-2 weeks.

02 Assessment +

02 Assessment

The hard part is over! Depending on the position, there may be a task or project to help us better understand your skills in action. This isn’t just about what’s on paper—it’s a chance for you to shine and show us what you can bring to the table.

03 Feedback +

03 Feedback

We believe in open, two-way communication. After the assessment, we'll provide detailed feedback so you know exactly where you stand, and we’ll also ask for your input on the process—your perspective truly matters to us. No matter the outcome, you’ll hear from us, allowing everyone to learn and refine their interview skills. And remember, the door isn't closed forever; sometimes, clients need a bit more time to decide. You can expect to hear back from us within a week or less, and we'll keep everything clear and straightforward along the way.

04 Decision +

04 Decision

If everything falls into place, we’ll walk you through the offer and what it means to join our client or even our team. And if it’s not the right fit this time, no worries—we’ll keep you in mind for future roles that might be an even better match.

We don’t have 5,000 jobs. Just the right ones.

Respect time.

We work with a small number of companies on roles that are approved, funded, and actively hiring. If it’s here, it’s real — and it’s being worked properly.

We don't list everything, just roles worth taking seriously.

Respect experience.

We won’t promise outcomes. We will promise how we work.

You’ll get honest feedback when we have it, clarity on where you stand and no padding pipelines or forcing fits.

If we put you forward, it’s intentional.

No farming. No ghosting.

If there isn’t a role for you today, you can still stay visible.

Being in our network means we reach out when a role actually matches, your profile is reviewed by a recruiter, not software and you’re not marketed blindly.

It’s a holding place for future conversations.

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