GraphQL Engineer

Synechron; Sydney; On-site; AUD 120,000 - 180,000; Full time

Job summary

Synechron is seeking a GraphQL Engineer to build backend services in TypeScript and Node.js within a large, strongly typed codebase. You will design APIs with backward compatibility, implement OAuth 2.0/OpenID Connect, and operate in an AWS environment with restricted access.

You'll work on observability, debugging distributed systems, and maintain robust testing with Vitest/Jest and Playwright, within modern CI/CD pipelines and a shared monorepo.

Qualifications

• Build backend services in TypeScript and Node.js.
• Design and version APIs with backward compatibility.
• Implement OAuth 2.0/OpenID Connect authentication.
• Experience with AWS in restricted enterprise environments.
• Strong observability and debugging of distributed systems.
• Write unit and end-to-end tests with modern tools.
• Use CI/CD pipelines and version control in a shared monorepo.
• Maintain security and data protection in regulated systems.

Responsibilities

• Develop backend services in TypeScript and Node.js, not just frontend work.
• Design and version APIs used by multiple applications with backward compatibility.
• Implement and explain OAuth 2.0/OpenID Connect authentication flows.
• Operate in an AWS environment with restricted access and governance.
• Trace and debug requests across gateway, API, and downstream services.
• Maintain testing discipline with Vitest/Jest or Playwright.
• Work in a modern CI/CD setup with Git, feature flags and release pipelines.
• Ensure least-privilege access and protect credentials in logs.

Skills

TypeScript

Node.js

API design

CI/CD

Security awareness

Testing discipline

Tools

Vitest/Jest

Playwright

Git

CI/CD pipelines

Monorepo tooling

Job description

We’re looking for a GraphQL Engineer .

Synechron, is a global provider of Information Technology outsourcing services focused on the banking, finance and payments industry. We provide a broad range of IT services and technology solutions that are flexible, cost-effective, efficient and reliable. We pride ourselves on our ability to deliver high quality resources and solutions to our clients. Through Synechron’s Financial innovation labs, we continue to develop innovative solutions by providing engineering payment solutions, creating tools and processes that shape the evolution of technology. For more information on the company, please visit our website: www.synechron.com.

Job Description:

Strong TypeScript and Node.js (server-side)

• Builds backend services in TypeScript, not just front-end work
• Comfortable in a large, strictly typed codebase

API design and contract management

• Has designed and versioned APIs used by multiple applications
• Understands backwards compatibility and how to change an API without breaking existing consumers

OAuth 2.0 / OpenID Connect authentication

• Can explain and implement different authentication flows
• Understands token scoping, delegation and secure token handling

AWS experience in a restricted enterprise environment

• Productive with limited access and permissions
• Familiar with load balancers, secrets management, caching and container services
• Can diagnose issues without full administrative access by working with platform teams

Observability/Monitoring and Debugging across distributed systems

• Can trace a failing request through multiple layers — gateway, API layer, downstream services
• Uses logs, traces and correlation IDs systematically rather than by trial and error

Testing discipline

• Writes unit and end-to-end tests as part of delivering work
• Experience with modern testing tools (e.g. Vitest/Jest, Playwright or similar)

Modern CI/CD and version control practices

• Works comfortably with git, automated pipelines, feature flags, release candidates and rollback
• Experience in a shared monorepo environment is an advantage

Security and compliance awareness in regulated systems

• Default habits of least-privilege access and never exposing customer data or credentials in logs
• Thinks about authorisation on every request

SYNECHRON’S DIVERSITY & INCLUSION STATEMENT

Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and is an affirmative action employer. Our Diversity, Equity, and Inclusion (DEI) initiative ‘Same Difference’ is committed to fostering an inclusive culture – promoting equality, diversity and an environment that is respectful to all. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. We encourage applicants from across diverse backgrounds, race, ethnicities, religion, age, marital status, gender, sexual orientations, or disabilities to apply. We empower our global workforce by offering flexible workplace arrangements, mentoring, internal mobility, learning and development programs, and more.

All employment decisions at Synechron are based on business needs, job requirements and individual qualifications, without regard to the applicant’s gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law