API Web Developer

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

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At Substance, we go beyond the surface—delivering depth over style by connecting businesses with world-class talent at a fraction of the traditional cost. Whether you need permanent, remote or fractional hires, we’ve cracked the code on finding exceptional professionals from lower-cost regions, helping you save up to 70% on recruitment without compromising on quality.

We’re not just matching candidates to jobs—we’re curating lasting partnerships built on culture fit, potential, and business growth. With our cutting-edge AI-powered tools and rigorous vetting process, you’ll get more than just a resume—you’ll find the right fit for your team.

At Substance, we believe in smarter hiring that drives impact. Let’s reduce your hiring costs and build something great together.