API Developer

API Developer Location: India Introduction to TM Forum: TM Forum is a global alliance of more than 800 telco and tech companies, leading the industry in defining the building blocks for new operating models, impactful new partnerships, and advanced software platforms. The Forum helps its members unlock the value of data to create nearly endless opportunities for players across the communications ecosystem. At global events including DTW Ignite, TM Forum provides a platform for industry change-makers to share ground-breaking innovation, market developments, product launches and business transformation journeys. We are the only industry body to count the world’s top 10 CSPs and all the key hyperscalers as active, strategic members. We are on a mission to reinvent the telco industry as a vibrant part of the digital landscape – and a driving force in shaping its future. To find out more, visit: tmforum.org. Role Overview The API Developer is a hands-on technical role focused on improving the technical delivery and developer experience of TM Forum APIs. You will support a member-driven API programme, enabling high-quality API development with a diverse group of contributors. Working with open standards, tooling, automation, and collaborative workflows, you will help ensure APIs are consistent, implementable, and easy to consume and contribute to. Key Responsibilities API Enablement and Technical Facilitation • Support member-driven API development by reviewing and improving API definitions for clarity, consistency, and quality. • Provide technical guidance and feedback on API designs without owning functional API decisions. • Help translate member input into high-quality, standards-aligned API assets. API Standards and Governance Support • Apply and reinforce API design standards and governance principles. • Ensure APIs align with OpenAPI and other relevant open standards. • Identify design issues, inconsistencies, and technical debt, and propose improvements, patterns, or guidance. Tooling Development and Automation • Design, build, and maintain internal API tooling, primarily using Node.js. • Improve tooling that supports API validation, testing, generation, and publishing. • Reduce manual effort and friction in the API delivery lifecycle through automation. Testing, Validation, and Quality • Support API testing and validation activities. • Work with API testing frameworks, conformance tooling, and quality gates. • Diagnose and resolve issues across API definitions, tooling, and CI pipelines. Delivery Workflow and CI • Work effectively with git- and GitHub-based workflows. • Contribute to and improve CI processes related to API development and validation. • Collaborate with tooling, DevOps, and architecture roles to improve delivery flow. Developer Experience and Communication • Improve the developer experience for API consumers and contributors. • Produce clear technical documentation, guidance, and examples. • Communicate decisions, feedback, and technical changes clearly and constructively. Open Collaboration and Community Working • Operate effectively in an open, multi-organisation contribution environment. • Engage with members and contributors in a supportive and neutral way. • Encourage good contribution practices and high technical quality. Key Skills and Experience Strong coding experience, with a particular focus on Node.js (especially for building tooling and automation). Solid understanding of API design and governance using OpenAPI, with experience working with open standards and contract-first approaches. Proficient with Git, GitHub, and CI workflows, and comfortable working with a range of API tooling, testing, and validation practices. Strong written and verbal communication skills, with the ability to collaborate with both technical and non-technical stakeholders. Nice to Have • Experience of AI tools to enhance velocity and quality of development: Github copilot, claude etc • Testing or quality engineering experience. • Technical writing or documentation experience. • Open source contribution or maintenance experience. • Telecoms or BSS/OSS domain experience. Diversity & Inclusion at TM Forum At TM Forum, we’re building a workplace where everyone can belong, feel respected, supported and able to do their best work. We welcome talent from all walks of life to join our global community, which is made stronger by the different perspectives, backgrounds and experiences each person brings. We hire based on skills, potential and values, never on assumptions about who someone is or where they come from. We actively work to ensure our recruitment and people practices are fair, inclusive and free from bias.