Senior Software Developer

This role is ideal for a Senior Software Developer with 5+ years of experience building scalable systems using Node.js and cloud-native architectures (AWS, containers, serverless). It suits someone passionate about test-driven development (TDD), pair programming, and continuous delivery, who can design and maintain high-scale APIs and microservices. You should be comfortable working across the full SDLC—from architecture and infrastructure (IaC, Docker, Terraform) to deployment and monitoring—while collaborating closely with product teams in a lean, iterative environment.

1. How would you design a full-stack feature for a B2B learning platform using React, Node.js, and TypeScript?
   I would break the feature into frontend, backend, and data layers with clearly defined contracts between them. On the frontend, I’d build reusable React components and manage state cleanly, while the backend would expose well-structured API endpoints with validation, logging, and tests.

2. What are the benefits of using TypeScript across both frontend and backend applications?
   TypeScript provides strong typing, better tooling, and earlier detection of errors during development. Sharing types across the client and server also improves consistency and reduces integration issues between frontend and backend services.

3. How would you handle authentication and SSO integration in a B2B SaaS platform?
   I would implement industry standards such as OAuth2, OpenID Connect, or SAML depending on the client's requirements. The implementation would include secure token handling, proper session management, and robust logging for troubleshooting enterprise integrations.

4. How do you ensure a React application remains scalable as the product grows?
   I structure the codebase using feature-based modules, reusable components, and clear separation between UI, state, and business logic. Establishing consistent patterns for state management, API interactions, and testing helps maintain scalability over time.

5. What is your approach to building reliable reporting or analytics features?
   I focus on ensuring the underlying data pipelines are accurate, efficient, and well-tested, particularly when aggregations or background jobs are involved. On the frontend, I prioritize clear data visualization and performance when handling large datasets.

6. How do you debug an issue where a frontend feature works locally but fails in production?
   I compare environment configurations, inspect network requests and logs, and attempt to reproduce the issue in an environment that mirrors production. This helps isolate whether the problem stems from configuration differences, API behavior, permissions, or data inconsistencies.

7. How do you write clean and maintainable code in a full-stack TypeScript project?
   I focus on clear naming conventions, small and focused functions, well-defined interfaces, and consistent project structure. Code reviews, automated linting, and testing also help maintain long-term code quality.

8. How would you design an API for assigning courses to learners in an enterprise product?
   I would design endpoints around the core domain logic, including validation for user eligibility, organization constraints, and assignment rules. The API should support extensibility for features like bulk assignments, automation, and reporting.

9. How do you approach testing in a modern full-stack web application?
   I combine unit tests for core logic, integration tests for APIs and database interactions, and end-to-end tests for key user flows. This layered testing approach ensures both system reliability and good user experience.

10. How do you collaborate effectively in an agile product team when working on varied tasks across the stack?
    I communicate clearly with the team, ask questions early, and break work into smaller deliverable increments. Being comfortable working across the stack and sharing context helps maintain team velocity and alignment.

Songtradr, the world’s largest B2B music technology company, is hiring a Senior Software Developer to help build and scale the MassiveMusic platform, enabling global brands to connect with a vast music catalogue and rights management system. You’ll design and maintain high-scale APIs and microservices, working across the full SDLC—from architecture and infrastructure to deployment and monitoring—using a modern stack including Node.js, AWS (Lambda, SQS, RDS), Docker, Terraform, and CI/CD with GitHub Actions. The role is remote within the UK, with occasional team meetups in London, and offers a competitive salary and strong professional development opportunities. Join a collaborative, test-driven engineering culture focused on TDD, pair programming, and continuous delivery, where you’ll ship production code daily and help power billions of API requests each month.